Question ASUS Motherboards ?

Elliah246

Prominent
Feb 11, 2024
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535

ASUS ROG Strix B850-A​

versus

ASUS ROG Strix B850-E​


Any reason to get the more expensive board?
My personal needs are 2x M.2 slots + 2x PCIe slots. That's all. Don't care about things like 5G ethernet or Wifi7.

Question: I will run one GPU + one soundcard + 2 nvme ssds.
Will my GPU run in x8 or in x4 mode with the B850-E ? And how would it run with the B850-A?

Thank you.
 
The E denotes the Extreme series...which was a nomenclature used about a decade or so ago. The A would stand for Arctic or rather a white board. So if anything it boils down to the aesthetics of your build. I'd also avoid Asus and side with ASRock, Gigabyte or MSI, if possible.

one soundcard
Please elaborate. If you drop a device onto the second PCIeX16(G4) slot, you shouldn't populate slot M2_3 on the board with an SSD as they are both shared.
^
https://dlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_STRIX_B850-A_GAMING_WIFI/E24382_ROG_STRIX_B850-A_GAMING_WIFI_EM_WEB.pdf?model=ROG STRIX B850-A GAMING WIFI
page 14 for the Strix B850-A.

https://dlcdnets.asus.com/pub/ASUS/...EM_WEB.pdf?model=ROG STRIX B850-E GAMING WIFI
page 13 for the Strix B850-E

My personal needs are 2x M.2 slots + 2x PCIe slots.
Why not look at an matx motherboard?
 
The E denotes the Extreme series...which was a nomenclature used about a decade or so ago. The A would stand for Arctic or rather a white board. So if anything it boils down to the aesthetics of your build. I'd also avoid Asus and side with ASRock, Gigabyte or MSI, if possible.

one soundcard
Please elaborate. If you drop a device onto the second PCIeX16(G4) slot, you shouldn't populate slot M2_3 on the board with an SSD as they are both shared.
^
https://dlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_STRIX_B850-A_GAMING_WIFI/E24382_ROG_STRIX_B850-A_GAMING_WIFI_EM_WEB.pdf?model=ROG STRIX B850-A GAMING WIFI
page 14 for the Strix B850-A.

https://dlcdnets.asus.com/pub/ASUS/mb/SocketAM5/ROG_STRIX_B850-E_GAMING_WIFI/E24280_ROG_STRIX_B850-E_GAMING_WIFI_EM_WEB.pdf?model=ROG STRIX B850-E GAMING WIFI
page 13 for the Strix B850-E

My personal needs are 2x M.2 slots + 2x PCIe slots.
Why not look at an matx motherboard?
Yeah i know that much that E series is thought to be a superior class over the rest.
But in practice i cannot spot much of a difference other than a few more slots for this or that.
So is it essentially the same board with a 100 dollar price gap?

Why avoid asus? The newer boards use realtek network over intel but i asume this isn't what you're on about.
I have bad experience with msi, from my knownledge their products lack quality.

Yes my intention was to mount the soundcard into the second PCIe slot below the graphicscard.
Oh, does the manual say not to use the M2_3 slot because it shares "bandwidth" with the lower PCIe slot? What would happen when both are used, fallback to x4?

What's mATX? mini atx? Can't say, used to having the typical mid range sized atx desktop.
 
Capture.png


Looking at this, correct me if wrong, all slots labeled with "A" share bandwidth, same goes for "B".
So if i populate more than one A slot, the bandwidth for both will become lower.
Also there is a total of 3x A slots but the configuration tab only provides information for max 2x devices operating. What if all 3 are operating?

What would happen if i mounted the GPU to upper PCIe "A" slot, and a soundcard to the lowest PCIe "B" slot, i mean would the gpu still run at x16 since those two slots share no bandwidth?

Then i could mount one M.2 nvme ssd to the upside M.2_1 slot since it's neither labeled with A or B must indicate it's independently operating.
The second M.2 nvme ssd could be mounted to the "B" slot right above the lowest "B" slot.
That would result in the soundcard and the nvme ssd sharing bandwidth and thus reduce it.
But would it be reduced to x8 or x4 ?

Still don't know which board to chose. Just need it to run 1 gpu + 1 sound card + 2 nvme drives
 
So the only difference between A and E board is the E standing for Extreme.
Extreme = few more connection ports like an extra nvme slot and usb slots.
The price gap isn't worth it. Doesn't deserve the naming scheme extreme.
Is that really all? Is the board made of the same quality, same materials, same product?
Am i missing something?
 
Basically the E boards have an extra I/O chip onboard similar to a old "southbridge" chip for expansion.
It gives more M.2 slots and PCIE lanes to connect more devices at full speed. Instead of having to share lanes or disable SATA ports when 2 or more M.2s are installed.
We are all forum members like yourself, who give our time to help others. Not employees of the site.
 
I'd also avoid Asus and side with ASRock, Gigabyte or MSI, if possible.
And why's that? I have been using Asus boards for 8 years (4 of them) and they all worked great (they are still all working actually). Never had a problem beside the ones caused by my own stupidity. If you are talking about their atrocious customer service then yes, maybe, but the odds that you end up needing it are very small. If the board works in the first 30 days, it will most likely work for years.
 
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And why's that? I have been using Asus boards for 8 years (4 of them) and they all worked great (they are still all working actually). Never had a problem beside the ones caused by my own stupidity. If you are talking about their atrocious customer service then yes, maybe, but the odds that you end up needing it are very small. If the board works in the first 30 days, it will most likely work for years.
I second this. I have only ever used ASUS boards and they have all been rock solid. They do tend to be a bit more expensive than comparative boards but I will likely buy ASUS again when the next cycle comes around without a second thought
 
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You don't have to search real far to find some of the large screw ups asus has had in the last couple years. It has lead to some very major youtube computer tech channels not accepting advertising or sponsored product from asus. They key one I remember was related to warranty and that was one of the big thing that made it worth paying extra for with asus.

Asus has so many modules and sub models it tends to be almost impossible to figure out. You just have to read all the fine print and decide for yourself if it something you need and worth the cost difference between the boards. In general most the stuff is marketing hype or physical appearance stuff.

My general guess without reading the details is your assumption about using the 2-1 ssd slot and the gpu in the A slot is correct. Most boards have a x16 slot and a x4 SSD socket that run directly from the CPU. All the other slots are running from the chipset and you need to read the fine print to see what restrictions there are about using them at the same time.

As a added note even if you were to run your video card at x8 it likely makes no difference. Its not like you are running pcie2 or something. They have tested 4090 running on pcie4 x 8 and it runs just fine so lesser cards should also. They have tested the new 5090 but I have not bothered to dig though and see what the minimum it will run on.
 
You don't have to search real far to find some of the large screw ups asus has had in the last couple years. It has lead to some very major youtube computer tech channels not accepting advertising or sponsored product from asus. They key one I remember was related to warranty and that was one of the big thing that made it worth paying extra for with asus.

Asus has so many modules and sub models it tends to be almost impossible to figure out. You just have to read all the fine print and decide for yourself if it something you need and worth the cost difference between the boards. In general most the stuff is marketing hype or physical appearance stuff.

My general guess without reading the details is your assumption about using the 2-1 ssd slot and the gpu in the A slot is correct. Most boards have a x16 slot and a x4 SSD socket that run directly from the CPU. All the other slots are running from the chipset and you need to read the fine print to see what restrictions there are about using them at the same time.
Oh i am well aware of the recent exposure of the Asus warranty and repairs issues. Not something I have ever needed but I work on the principle that once these things have been exposed that there will be a considerable improvement from the company should you have an issue.

There is definitely an Asus tax - certainly if you go down the ROG route - but I have found that the USB configurations on the Asus boards do tend to be a little more robust. Certainly on the boards that I look at anyway.

I am not a serial upgrader and tend to try and buy once and buy well with a platform lasting me quite a while. My current z370 Maximus X Hero has been a great board.

I do tend to build quite a few systems for others though and when often more limited by budget, then I often use MSI boards. Not had many issues to report here either. I have used AsRock on one occasion for a build and no problems encountered although the BIOS left a lot to be desired. I have never used a Gigabyte board so I cannot comment.
 
The usermanual for the asus rog strix B850E mainboard says:

GPU mounted in PCIEX16(G5) slot running will run x8 instead of x16, if either M.2_2 or M.2_3 slot is operating.
I intend to mount the GPU in the G5 PCIe slot so both the M.2_2 and _3 slots would be non existent because even if the performance difference from x8 and x18 is minor, i would prefer operating the GPU @ x16. So both the M.2 slots would be entirely useless, which i an argument against purchasing the board offering those additional M.2 slots that i wouldn't use anyways.
Additionally the M.2_4 slot will be disabled when i'm operating my soundcard via PCIEX16(G4) slot, so that makes another M.2 slot entirely useless.
However, the M.2_1 and M.2_5 slots would both remain operational while both the PCIEX16(G5) and PCIEX16(G4) are in use, without bandwidth conflict between any of these slots.
Did i get this right or no?

The specificationpage for the asus B850E also says this:
Specifications vary by CPU types.
And what the hell does this mean exactly? I intend to combine the board with the amd 9800X3D processor. So what would be the outcome of that?

The other mainboard i'm considering is the asus B850A. This board shows only very little information about connectors with shared bandwidth.
The usermanual says only this: When PCIEX16(G4) slot is operating, M.2_3 will be disabled.
So in my case where both PCIE G5 and G4 slots would be operating (one gpu + one soundcard) the M.2_3 slot would be disabled, however the other M.2 slots, _1 and _2 and _4 all three of them would remain operational without affecting the bandwidth of neither G4 or G5 PCIE slot.
PS: The specs page for this board also notes that specification vary by CPU types.
And i've got no idea how to find out exactly what that means for my specific cpu.
Did i get this right or no?

My conclusion: the B850E "extreme" offers few more slots compared to B850A but for my usecase (gpu + soundcard) the B850E would only offer me two operational M.2 slots or otherwise i would compromise bandwidth of either G4 or G5 PCIE slots, while the B850A would offer me three rather than two operational M.2 slots without affecting G4 or G5 PCIE bandwidth.

Did i get this right or no?

PS: The specs page under the expansion slots section for both boards shows a link to another asus webpage. On that page i searched for B850 and found the following:
AMD Ryzen 8000 sereis desktop processors do not support CPU bifurcation.
What does that mean, i don't understand.
Finally it seems the cheaper non extreme board would for my particular use case offer me one more M.2 slot, there might also be a few more usb slots available on the extreme board but i don't need that or any other additional connector.
Judging from my conclusion it appears purchasing the cheaper board would be the better idea, however i do have a final important question that could make the extreme board version worth paying the extra money.
Is there a difference between asus B850A and B850E in terms of materials, quality and stability and performance?
 
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And why's that? I have been using Asus boards for 8 years (4 of them) and they all worked great (they are still all working actually). Never had a problem beside the ones caused by my own stupidity. If you are talking about their atrocious customer service then yes, maybe, but the odds that you end up needing it are very small. If the board works in the first 30 days, it will most likely work for years.
I actually have the first iteration of the Rampage Extreme (X48 chipset) board since it's launch and it's yet in working order. I've built countless systems with Asus gear. If this was pre-pandemic, I'd have sided with Asus but they haven't been the same brand since this incident came to light;
View: https://youtu.be/QdoB9p3LXVQ


With their Intel BIOS update, they were the only board out there that took the highest performance hit to curb Intel's half baked attempt at countering AMD's Ryzen lineups. They also pair subpar thermal pads on their VRM and chipset heatsinks resulting in lackluster overclocks or I/O connectivity. Their Strix lineup of GPU's also have a contact issue with the GPU die. The ROG lineup was designed as the cream of the crop lineup and today it's a shadow of it's former self. Not bashing Asus, I wished they made amazing reverse engineered boards/gear that made people from ASRock(OC Formula series with Nick Shih), MSI(M Power/Lightning) and Gigabyte(joining late with their Aorus series), to take heed and learn from Asus. EVGA have always had their own thing with Vince(KingPin) so they never needed queues from Asus's ROG dept.

One other point I take issue to is how Asus tends to command a higher price tag on all their products. I have communications with their brand reps and they themselves don't have a comeback answer as to why their prices are higher on all fronts(globally, not just a specific region). Brand loyalty might've been a thing in the past but in light of their competitors, there are better options available. I won't go into the RMA dept.

Edit:
I recalled one other feature you pay for but is half baked on an Asus board. Their BIOS Flashback feature often ruins their own boards or the flashing process goes awry, requiring you to RMA the board. If you're desperate you can use a CH341A BIOS programmer toolkit, but that's another step on a ladder that's not needed. Gigabyte have had their spell of this BIOS update going sideways incident but they don't levy it with a higher priced product.


Regardless, this thread is for the OP, not me.

OP, Stick to one thread unless you want spaghetti brains.
 
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ASUS ROG Strix B850-A​

versus

ASUS ROG Strix B850-E​


Any reason to get the more expensive board?
My personal needs are 2x M.2 slots + 2x PCIe slots. That's all. Don't care about things like 5G ethernet or Wifi7.

Question: I will run one GPU + one soundcard + 2 nvme ssds.
Will my GPU run in x8 or in x4 mode with the B850-E ? And how would it run with the B850-A?

Thank you.

I been waiting for supermicro to come out with a board with 10Gb on a AM5
But here is one that would work very well without all the useless junk that will out date itself. Nor it does the dumb things like share pcie
H13SAE-MF

And why's that?
I haven't been impressed with anything they produced lately.
Overloaded with outdated technology such as wifi and sharing pcie is a starting point of not to buy it.

Whoever thought putting wifi on a motherboard need to get their head examined. It will get outdated, plus its an extra circuit that can increase failure rates. Some at least use m.2 or mini pcie cards that they can be removed.
 
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So the only difference between A and E board is the E standing for Extreme.
Extreme = few more connection ports like an extra nvme slot and usb slots.
The price gap isn't worth it. Doesn't deserve the naming scheme extreme.
Is that really all? Is the board made of the same quality, same materials, same product?
Am i missing something?
no, because they are into marketing gimmicks and putting useless things onto the motherboard like wifi and decorate their board so it would look good in an overpriced glass case.
 
The usermanual for the asus rog strix B850E mainboard says:

GPU mounted in PCIEX16(G5) slot running will run x8 instead of x16, if either M.2_2 or M.2_3 slot is operating.
I intend to mount the GPU in the G5 PCIe slot so both the M.2_2 and _3 slots would be non existent because even if the performance difference from x8 and x18 is minor, i would prefer operating the GPU @ x16. So both the M.2 slots would be entirely useless, which i an argument against purchasing the board offering those additional M.2 slots that i wouldn't use anyways.
Additionally the M.2_4 slot will be disabled when i'm operating my soundcard via PCIEX16(G4) slot, so that makes another M.2 slot entirely useless.
However, the M.2_1 and M.2_5 slots would both remain operational while both the PCIEX16(G5) and PCIEX16(G4) are in use, without bandwidth conflict between any of these slots.
Did i get this right or no?

The specificationpage for the asus B850E also says this:
Specifications vary by CPU types.
And what the hell does this mean exactly? I intend to combine the board with the amd 9800X3D processor. So what would be the outcome of that?

The other mainboard i'm considering is the asus B850A. This board shows only very little information about connectors with shared bandwidth.
The usermanual says only this: When PCIEX16(G4) slot is operating, M.2_3 will be disabled.
So in my case where both PCIE G5 and G4 slots would be operating (one gpu + one soundcard) the M.2_3 slot would be disabled, however the other M.2 slots, _1 and _2 and _4 all three of them would remain operational without affecting the bandwidth of neither G4 or G5 PCIE slot.
PS: The specs page for this board also notes that specification vary by CPU types.
And i've got no idea how to find out exactly what that means for my specific cpu.
Did i get this right or no?

My conclusion: the B850E "extreme" offers few more slots compared to B850A but for my usecase (gpu + soundcard) the B850E would only offer me two operational M.2 slots or otherwise i would compromise bandwidth of either G4 or G5 PCIE slots, while the B850A would offer me three rather than two operational M.2 slots without affecting G4 or G5 PCIE bandwidth.

Did i get this right or no?

PS: The specs page under the expansion slots section for both boards shows a link to another asus webpage. On that page i searched for B850 and found the following:
AMD Ryzen 8000 sereis desktop processors do not support CPU bifurcation.
What does that mean, i don't understand.
Finally it seems the cheaper non extreme board would for my particular use case offer me one more M.2 slot, there might also be a few more usb slots available on the extreme board but i don't need that or any other additional connector.
Judging from my conclusion it appears purchasing the cheaper board would be the better idea, however i do have a final important question that could make the extreme board version worth paying the extra money.
Is there a difference between asus B850A and B850E in terms of materials, quality and stability and performance?
would be so nice if someone can actually read and seriously reply to my questions
 
The usermanual for the asus rog strix B850E mainboard says:

GPU mounted in PCIEX16(G5) slot running will run x8 instead of x16, if either M.2_2 or M.2_3 slot is operating.
I intend to mount the GPU in the G5 PCIe slot so both the M.2_2 and _3 slots would be non existent because even if the performance difference from x8 and x18 is minor, i would prefer operating the GPU @ x16. So both the M.2 slots would be entirely useless, which i an argument against purchasing the board offering those additional M.2 slots that i wouldn't use anyways.
Additionally the M.2_4 slot will be disabled when i'm operating my soundcard via PCIEX16(G4) slot, so that makes another M.2 slot entirely useless.
However, the M.2_1 and M.2_5 slots would both remain operational while both the PCIEX16(G5) and PCIEX16(G4) are in use, without bandwidth conflict between any of these slots.
Did i get this right or no?

The specificationpage for the asus B850E also says this:
Specifications vary by CPU types.
And what the hell does this mean exactly? I intend to combine the board with the amd 9800X3D processor. So what would be the outcome of that?

The other mainboard i'm considering is the asus B850A. This board shows only very little information about connectors with shared bandwidth.
The usermanual says only this: When PCIEX16(G4) slot is operating, M.2_3 will be disabled.
So in my case where both PCIE G5 and G4 slots would be operating (one gpu + one soundcard) the M.2_3 slot would be disabled, however the other M.2 slots, _1 and _2 and _4 all three of them would remain operational without affecting the bandwidth of neither G4 or G5 PCIE slot.
PS: The specs page for this board also notes that specification vary by CPU types.
And i've got no idea how to find out exactly what that means for my specific cpu.
Did i get this right or no?

My conclusion: the B850E "extreme" offers few more slots compared to B850A but for my usecase (gpu + soundcard) the B850E would only offer me two operational M.2 slots or otherwise i would compromise bandwidth of either G4 or G5 PCIE slots, while the B850A would offer me three rather than two operational M.2 slots without affecting G4 or G5 PCIE bandwidth.

Did i get this right or no?

PS: The specs page under the expansion slots section for both boards shows a link to another asus webpage. On that page i searched for B850 and found the following:
AMD Ryzen 8000 sereis desktop processors do not support CPU bifurcation.
What does that mean, i don't understand.
Finally it seems the cheaper non extreme board would for my particular use case offer me one more M.2 slot, there might also be a few more usb slots available on the extreme board but i don't need that or any other additional connector.
Judging from my conclusion it appears purchasing the cheaper board would be the better idea, however i do have a final important question that could make the extreme board version worth paying the extra money.
Is there a difference between asus B850A and B850E in terms of materials, quality and stability and performance?
specification vary by CPU

7000/9000
Socket G5 runs at x16 with nothing in M.2_2 M.2_3
Socket G5 runs at x8 with M.2_2 @ x4 and M.2_3 @ x4

8000
Socket G5 runs at x8 or x4 with M.2_2 and M.2_3 not available

Since you are not using a 8000 series CPU i would not worry about it.
 
specification vary by CPU

7000/9000
Socket G5 runs at x16 with nothing in M.2_2 M.2_3
Socket G5 runs at x8 with M.2_2 @ x4 and M.2_3 @ x4

8000
Socket G5 runs at x8 or x4 with M.2_2 and M.2_3 not available

Since you are not using a 8000 series CPU i would not worry about it.
regarding both boards A and E?
 
I actually have the first iteration of the Rampage Extreme (X48 chipset) board since it's launch and it's yet in working order. I've built countless systems with Asus gear. If this was pre-pandemic, I'd have sided with Asus but they haven't been the same brand since this incident came to light;
View: https://youtu.be/QdoB9p3LXVQ


With their Intel BIOS update, they were the only board out there that took the highest performance hit to curb Intel's half baked attempt at countering AMD's Ryzen lineups. They also pair subpar thermal pads on their VRM and chipset heatsinks resulting in lackluster overclocks or I/O connectivity. Their Strix lineup of GPU's also have a contact issue with the GPU die. The ROG lineup was designed as the cream of the crop lineup and today it's a shadow of it's former self. Not bashing Asus, I wished they made amazing reverse engineered boards/gear that made people from ASRock(OC Formula series with Nick Shih), MSI(M Power/Lightning) and Gigabyte(joining late with their Aorus series), to take heed and learn from Asus. EVGA have always had their own thing with Vince(KingPin) so they never needed queues from Asus's ROG dept.

One other point I take issue to is how Asus tends to command a higher price tag on all their products. I have communications with their brand reps and they themselves don't have a comeback answer as to why their prices are higher on all fronts(globally, not just a specific region). Brand loyalty might've been a thing in the past but in light of their competitors, there are better options available. I won't go into the RMA dept.

Edit:
I recalled one other feature you pay for but is half baked on an Asus board. Their BIOS Flashback feature often ruins their own boards or the flashing process goes awry, requiring you to RMA the board. If you're desperate you can use a CH341A BIOS programmer toolkit, but that's another step on a ladder that's not needed. Gigabyte have had their spell of this BIOS update going sideways incident but they don't levy it with a higher priced product.


Regardless, this thread is for the OP, not me.

OP, Stick to one thread unless you want spaghetti brains.
Gamersnexus was first calling asus out, two cent's just copycats his most viewed videos.
View: https://www.youtube.com/watch?v=cbGfc-JBxlY&t=91
 
I actually have the first iteration of the Rampage Extreme (X48 chipset) board since it's launch and it's yet in working order. I've built countless systems with Asus gear. If this was pre-pandemic, I'd have sided with Asus but they haven't been the same brand since this incident came to light;
View: https://youtu.be/QdoB9p3LXVQ


With their Intel BIOS update, they were the only board out there that took the highest performance hit to curb Intel's half baked attempt at countering AMD's Ryzen lineups. They also pair subpar thermal pads on their VRM and chipset heatsinks resulting in lackluster overclocks or I/O connectivity. Their Strix lineup of GPU's also have a contact issue with the GPU die. The ROG lineup was designed as the cream of the crop lineup and today it's a shadow of it's former self. Not bashing Asus, I wished they made amazing reverse engineered boards/gear that made people from ASRock(OC Formula series with Nick Shih), MSI(M Power/Lightning) and Gigabyte(joining late with their Aorus series), to take heed and learn from Asus. EVGA have always had their own thing with Vince(KingPin) so they never needed queues from Asus's ROG dept.

One other point I take issue to is how Asus tends to command a higher price tag on all their products. I have communications with their brand reps and they themselves don't have a comeback answer as to why their prices are higher on all fronts(globally, not just a specific region). Brand loyalty might've been a thing in the past but in light of their competitors, there are better options available. I won't go into the RMA dept.

Edit:
I recalled one other feature you pay for but is half baked on an Asus board. Their BIOS Flashback feature often ruins their own boards or the flashing process goes awry, requiring you to RMA the board. If you're desperate you can use a CH341A BIOS programmer toolkit, but that's another step on a ladder that's not needed. Gigabyte have had their spell of this BIOS update going sideways incident but they don't levy it with a higher priced product.


Regardless, this thread is for the OP, not me.

OP, Stick to one thread unless you want spaghetti brains.
The problems described in this video and gamersnexus, do they affect the B850 asus boards?
Hard to believe that boards still catch fire after this got public attention and huge backlash.
However i am now concerned about EXPO stability with asus boards.
Did AMD react to ASUS behaviour? After all asus must be a partner of amd otherwise they couldnt manufacture these amd boards, but amd can impossibly like asus behaviour so did they make any statement and whats the situation as of now?