[SOLVED] MOFSETs: 10 Direct vs 6+6 Parallel ?

[Regev]

I'm considering two boards for my 12600K. One of them is the Asus TUF GAMING B660M-PLUS WIFI D4, the other is the Gigabyte B660M Aorus Pro AX.

The Gigabyte comes with 6+6 Parallels (advertised as 12) + 1 for the iGPU, + 1 for the pcie/mem controller.
The ASUS comes with 10 direct, +1 for the rest.

I'm not sure if 6+6 beats 10. What do you say?

From Gigabyte's website:

https://au.aorus.com/blog-detail.php?i=974

Typical Power Design on Motherboard

Parallel is a common power design that could be found on motherboards. As per Figure 1 below, although it looks like a two-phased power, it could be regarded as a single-phase power because both its circuits are controlled by one PWM. The equivalent resistance could get lower with this kind of power design, but it also gets hotter, which is due to the poor loads to the current. If you pair a higher-end processor with the motherboard with a parallel power design, you may not get the full performance of the processor.

The Direct power design allows PWM to communicate with multiple Dr. MOS simultaneously and comes up with multiple independent circuits. Direct is the most premium power design of motherboards right now because it features the lowest temperature & the best capability with respect to current loads. This means that this power design could perfectly match the most premium processors in the market, and you could do something more extreme with your processor and motherboards like overclocking or a long-period of heavy loads.

So, what would you go with, the 10+1 from Asus, or the 6(+6)+1+1 from Gigabyte?

Thanks

 

[kerberos_20]

the hing about vrm doublers is thast they can provide as much power as true phases, just they dont have precise voltage control
6+6 will give you more power, but less precise voltage/current control
10 will give you less power but more precise voltage/current control

 

[Regev]

the hing about vrm doublers is thast they can provide as much power as true phases, just they dont have precise voltage control
6+6 will give you more power, but less precise voltage/current control
10 will give you less power but more precise voltage/current control

It's not a doubler, it's a parallel:

https://global.aorus.com/blog-detail.php?i=965

is the effect similar ? And if so, generally speaking, will the 10 provide more "stability" while the 6+6 more "overclockability" ?

 

[kerberos_20]

ah well, parallel are garbage which overheats quikly and got low power rating

 

[Regev]

So better go with 10+1? I think it's the same power design they have on their Z690 ITX
I can also get 6+2+1 (Gigabyte B660 DS3H), since the ASUS doesn't have dedicated phases for the pcie/memory controllers)

 

[kerberos_20]

asus doesnt really come with 10 direct, its drmos which has driver and two mosfets

drmos is more efficient then plain mosfets tbh

 

[Regev]

asus doesnt really come with 10 direct, its drmos which has driver and two mosfets
drmos is more efficient then plain mosfets tbh

Gigabyte also uses DrMOS, but they advertise their 12 as 6+6 phases parallel power design.
If you're right, then it is false advertising from ASUS's part. So their advertised 10+1 is basically 5(+5)+1, akin to the Gigabyte's 6(+6)+1+1?

 

[kerberos_20]

well that asus board has drmos 50A while gigabyte got 60A drmos..so performance might be similar
drmos is mosfets and driver combined together, they might appear same, but internally they arent same
if asus doesnt mention any doubling/paralelism on them, then they work as normal real mosfets

on another note, looking at pictures for that tuf b660m board from several sources, i see 11 drmos setup +2 normal VRM which would be 13 phases total (10+1+2)

 

[Regev]

well that asus board has drmos 50A while gigabyte got 60A drmos..so performance might be similar

So with the Gigabyte B660M Aorus Pro AX I'm getting more powerful DrMoses (60A vs 50A), and more of them (6+6 vs 5+5), for only $10 more?

Put it another way, if you were me, running a 12600K (non-OCed), which one would you get if you cared most about stability and reliability?

$120 - Gigabyte B660M DS3H (6+2+1, I think the 6 are direct?)
$180 - Asus TUF GAMING B660M-PLUS WIFI D4 - 10(5+5?)+1
$190 - Gigabyte B660M Aorus Pro AX - 12(6+6)+1+1

I have to decide quick, as my friend will fly here tomorrow from the US, and he'll bring one of them with him.

Thanks a lot, much appreciated.

 

[kerberos_20]

So with the Gigabyte B660M Aorus Pro AX I'm getting more powerful DrMoses (60A vs 50A), and more of them (6+6 vs 5+5), for only $10 more?

Put it another way, if you were me, running a 12600K (non-OCed), which one would you get if you cared most about stability and reliability?

$120 - Gigabyte B660M DS3H (6+2+1, I think the 6 are direct?)
$180 - Asus TUF GAMING B660M-PLUS WIFI D4 - 10(5+5?)+1
$190 - Gigabyte B660M Aorus Pro AX - 12(6+6)+1+1

I have to decide quick, as my friend will fly here tomorrow from the US, and he'll bring one of them with him.

Thanks a lot, much appreciated.

i have updated post above
12600k doesnt have too high power requirements, but if you plan to OC it to ~5GHz, power draw on it is around 300watts
so probably none of those mainboards would be able to run that stable, z690 would be needed as they have more phases

im on 12phases 40A and CPU tops out here at 180watts

 

[Regev]

I don't think the mATX version is 13+2, the ASUS page itself says 10+1. I think it's the same power design like their ITX Z690:

ROG STRIX Z690-I GAMING WIFI | Gaming motherboards｜ROG - Republic of Gamers｜ROG Global

ASUS ROG STRIX Z690-G GAMING WIFI Intel LGA 1700 ATX motherboard, DDR5, PCIe 5.0, 14+1 power stages, WiFi 6E, Intel® 2.5 Gb Ethernet, three M.2 slots, USB 3.2 Gen 2x2 USB Type-C®, SATA and Aura Sync

rog.asus.com

Anyway, I don't plan to OC at all. I just care about the CPU and the rest of the equipment getting stable voltage and sitting safe - it's a work computer that I need up and running reliably at all times.

I think stock 12600K power draw maxes out at 200W? Anyway, which motherboard would you get if you were me?

 

[kerberos_20]

I don't think the mATX version is 13+2, the ASUS page itself says 10+1. I think it's the same power design like their ITX Z690:

ya its probably 10+1+2 (for pcie)

 

[kerberos_20]

what about this board? 12+1 50A phases
ASRock Z690 Pro RS 189.99

 

[Regev]

what about this board? 12+1 50A phases
ASRock Z690 Pro RS 189.99

I need mATX or mITX.

 

[kerberos_20]

I need mATX or mITX.

than at that price point id go with this one:
https://shop.asus.com/us/90mb18q0-mvaay0-prime-z690m-plus-d4.html $189.99

its 10+1 vrm, same as that tuf gaming, but with more pcie lanes from chipset, and 2x more bandwith to cpu from chipset
price is about same + more usb/sata

 

[Regev]

than at that price point id go with this one:
https://shop.asus.com/us/90mb18q0-mvaay0-prime-z690m-plus-d4.html $189.99

its 10+1 vrm, same as that tuf gaming, but with more pcie lanes from chipset, and 2x more bandwith to cpu from chipset
price is about same + more usb/sata

What does it mean, that the CPU gets more voltage ?
Problem it has no WiFi

 

[helper800]

I need mATX or mITX.

I would go with the ASUS board.

 

[kerberos_20]

What does it mean, that the CPU gets more voltage ?
Problem it has no WiFi

nope, it means that devices connected with chipset PCI-e lanes wont be bottlenecked in bandwith as much as they will be on b660
so you can connect more sata drives, usb devices and enjoing 2x more overal bandwith, which is handy when you connect too many things

 

[kerberos_20]

ya wifi..that would be extra cost, fair enough

 

[Regev]

nope, it means that devices connected with chipset PCI-e lanes wont be bottlenecked in bandwith as much as they will be on b660
so you can connect more sata drives, usb devices and enjoing 2x more overal bandwith, which is handy when you connect too many things

I only connect 1 SSD NVME Gen4, and use the onboard iGPU.
But you said ' 2x more bandwith to cpu from chipset' - so I thought you meant the CPU gets more 'something' 😉