Question the performance of pcie 4*16 gpu on pcie3*16 mobo

[green.masood]

hi guys
im planning to upgrade my gpu card but as my mobo is z490-9 prime asus and is pcie3*16 i dont know what happens if i put a pci4*16 graphic card.
most of ppl say in 3060ti gpu , there is 1% of difference and not more
link < ---- you can look at this video for proof
but my question is why this rule is being broken that pcie4 card on pcie 3 slot will reduce performance by 20 to50 percents.
which cards are like 3060ti and which cards are not
in AMD what pcie4 cards perform well in pcie3 like 3060ti?
BTW my current gpu is rtx 2060 super

 

[rgd1101]

3060ti is on the low end. not much different compare to a higher end

 

[green.masood]

3060ti is on the low end. not much different compare to a higher end

my main concern is keeping the performance with diffderent pcie s not the high-end or low-end

 

[rgd1101]

you mean the paper different?
where on wiki https://en.wikipedia.org/wiki/PCI_Express
Version 3.x: 8 GT/s

x1: 985 MB/s
x16: 15.75 GB/s

Version 4.0: 16 GT/s

x1: 1.97 GB/s
x16: 31.5 GB/s

 

[Nighthawk117]

hi guys
im planning to upgrade my gpu card but as my mobo is z490-9 prime asus and is pcie3*16 i dont know what happens if i put a pci4*16 graphic card.
most of ppl say in 3060ti gpu , there is 1% of difference and not more
link < ---- you can look at this video for proof
but my question is why this rule is being broken that pcie4 card on pcie 3 slot will reduce performance by 20 to50 percents.
which cards are like 3060ti and which cards are not
in AMD what pcie4 cards perform well in pcie3 like 3060ti?
BTW my current gpu is rtx 2060 super

It doesn't matter, the difference is practically non existent. I use a 3080 on a Z490 board myself. Some AMD cards perform worse because they are only wired to use 8 PCI-E lanes and not the full 16.

 

[green.masood]

It doesn't matter, the difference is practically non existent. I use a 3080 on a Z490 board myself. Some AMD cards perform worse because they are only wired to use 8 PCI-E lanes and not the full 16.

you get the same performance that a pcie4.0 mobo gives?
my mobo is like you so if i buy 3060ti or 3070 ,... all performs as well as as pcie4? with the fact that z490-p is pcie3 support

 

[rgd1101]

PCIe 4.0 vs. PCIe 3.0 GPU Benchmark

With the launch of the new GeForce 30 series, PCI Express 4.0 performance has come up into the discussion. To find out exactly what we're talking about,...

www.techspot.com

 

[Nighthawk117]

you get the same performance that a pcie4.0 mobo gives?
my mobo is like you so if i buy 3060ti or 3070 ,... all performs as well as as pcie4? with the fact that z490-p is pcie3 support

I had the 3080 for about 6 months before I upgraded almost all of my PC. I looked into the PCI-E 3.0 vs 4.0 for it before purchasing a motherboard and CPU. My conclusion was that the difference was meaningless. If something is holding back your gaming performance, you can guarantee it won't be the PCI-E 3.0 bus, it will be something else like the CPU. I was choosing between the R7 5800X/X570 and i9 10850K/Z490, I decided on the latter.

The bottom line is this shouldn't even factor into your purchasing decision.

 

[thestryker]

The amount of bandwidth required for video cards hasn't really exceeded what PCIe 3.0 x16 can deliver except at the extremely high end. Even then the difference isn't all that high: https://www.techpowerup.com/review/nvidia-geforce-rtx-4090-pci-express-scaling/

The cards which first started having issues with PCIe 3.0 vs 4.0 are the ones which cut down on lane count (x8 and then x4).

 

[green.masood]

PCIe 4.0 vs. PCIe 3.0 GPU Benchmark

With the launch of the new GeForce 30 series, PCI Express 4.0 performance has come up into the discussion. To find out exactly what we're talking about,...

www.techspot.com

thnx bro i got it

 

[green.masood]

I had the 3080 for about 6 months before I upgraded almost all of my PC. I looked into the PCI-E 3.0 vs 4.0 for it before purchasing a motherboard and CPU. My conclusion was that the difference was meaningless. If something is holding back your gaming performance, you can guarantee it won't be the PCI-E 3.0 bus, it will be something else like the CPU. I was choosing between the R7 5800X/X570 and i9 10850K/Z490, I decided on the latter.

The bottom line is this shouldn't even factor into your purchasing decision.

ok sir i completely understood .
my cpu is i7-10700 paired witha z490-p
now im gonna upgrade my gpu from 2060 s to 3060ti.as a level up

 

[green.masood]

The cards which first started having issues with PCIe 3.0 vs 4.0 are the ones which cut down on lane count (x8 and then x4).

can you explain more and make some examples by name of these gpu s?

 

[Nighthawk117]

ok sir i completely understood .
my cpu is i7-10700 paired witha z490-p
now im gonna upgrade my gpu from 2060 s to 3060ti.as a level up

A good CPU, you would benefit from the new GPU.

 

[green.masood]

A good CPU, you would benefit from the new GPU.

is 3060ti a meaningful difference rather than 2060 super? in your opinion

 

[Nighthawk117]

can you explain more and make some examples by name of these gpu s?

The top slot on the motherboard has 16 PCI-E lanes wired directly to the CPU. However the graphics card must also have 16 lanes wired to the connector in order to use it. With the introduction of PC-E 4.0 though, the bandwidth is far greater than most graphics cards need. As a result on some AMD GPU's they have only wired the card to use 8 PCI-E lanes. They do this to save money without any performance loss. The downside of this is if you put one of these cards on a PCI-E 3.0 motherboard the 8 lane limitation may result in some performance loss. An example of such a card is the RX 6600 XT:

AMD Radeon RX 6600 XT PCI-Express Scaling

When the Radeon RX 6600 XT launched with an interface limited to PCI-Express 4.0 x8, lots of discussion emerged about how AMD crippled the bandwidth, and how much it affects the gaming experience. In this article, we're taking a close look at exactly that, comparing 22 titles running at PCIe...

www.techpowerup.com

The performance loss though is still relatively minor. The Nvidia 30 series cards though are wired for 16 lanes so they are not limited in the same way.

 

[green.masood]

The top slot on the motherboard has 16 PCI-E lanes wired directly to the CPU. However the graphics card must also have 16 lanes wired to the connector in order to use it. With the introduction of PC-E 4.0 though, the bandwidth is far greater than most graphics cards need. As a result on some AMD GPU's they have only wired the card to use 8 PCI-E lanes. They do this to save money without any performance loss. The downside of this is if you put one of these cards on a PCI-E 3.0 motherboard the 8 lane limitation may result in some performance loss. An example of such a card is the RX 6600 XT:

AMD Radeon RX 6600 XT PCI-Express Scaling

When the Radeon RX 6600 XT launched with an interface limited to PCI-Express 4.0 x8, lots of discussion emerged about how AMD crippled the bandwidth, and how much it affects the gaming experience. In this article, we're taking a close look at exactly that, comparing 22 titles running at PCIe...

www.techpowerup.com

The performance loss though is still relatively minor. The Nvidia 30 series cards though are wired for 16 lanes so they are not limited in the same way.

very nice.so my concerns fade out.
plz answer: is 3060ti a meaningful difference rather than 2060 super? in your opinion

 

[thestryker]

can you explain more and make some examples by name of these gpu s?

The RX5500 was the first one though the difference was fairly low for the 8GB version, but the 4GB version would have bigger issues due to running out of VRAM more often so having bandwidth cut in half was a huge issue. The RX6400 cut down to x4 and it has quite the difference. The 4060 Ti also loses performance due to being x8 though it isn't a large amount.

is 3060ti a meaningful difference rather than 2060 super? in your opinion

That's something you need to decide for yourself as to whether or not it's worth it for you, it is a decent performance upgrade, here's TPU and Tom's reviews:

NVIDIA GeForce RTX 3060 Ti Founders Edition Review

NVIDIA's GeForce RTX 3060 Ti comes at incredible pricing of $399, yet beats the GeForce RTX 2080 Super in rasterization, and even the RX 6800 in raytracing. In our RTX 3060 Ti review, we found that NVIDIA picked a fantastic cooler that's extremely quiet, yet fits everywhere because of its...

www.techpowerup.com

Nvidia GeForce RTX 3060 Ti Founders Edition Review: Ampere for Only $399

The GeForce RTX 3060 Ti is affordable and beats the 2080 Super in performance.

www.tomshardware.com

 

[Nighthawk117]

is 3060ti a meaningful difference rather than 2060 super? in your opinion

What I meant was that your CPU is powerful enough to benefit from a faster CPU. In terms of the upgrade, it will be a noticeable improvement, particularly in newer titles. I would normally lean towards a larger upgrade myself though. Can I ask what PSU you have?

 

[green.masood]

What I meant was that your CPU is powerful enough to benefit from a faster CPU. In terms of the upgrade, it will be a noticeable improvement, particularly in newer titles. I would normally lean towards a larger upgrade myself though. Can I ask what PSU you have?

so you confirm this gpu upgrade as a noticeable one?
my psu is cooler master 650 gold: mpe6501 acaag

 

[Nighthawk117]

so you confirm this gpu upgrade as a noticeable one?
my psu is cooler master 650 gold: mpe6501 acaag

It will be noticeable in demanding titles, it's not double the performance though. Which is what I would normally aim for with a GPU upgrade. However it should be a drop in upgrade, you might have to get a higher wattage PSU for a more powerful card.

If you were to take Cyberpunk as an example, you would be looking at a performance boost of 36% without ray tracing and around 49% with ray tracing.

How much is the 3060 Ti your looking at and what country do you live in?

 

[green.masood]

It will be noticeable in demanding titles, it's not double the performance though. Which is what I would normally aim for with a GPU upgrade. However it should be a drop in upgrade, you might have to get a higher wattage PSU for a more powerful card.

If you were to take Cyberpunk as an example, you would be looking at a performance boost of 36% without ray tracing and around 49% with ray tracing.

How much is the 3060 Ti your looking at and what country do you live in?

So you say at least there is 36% boost in all aspect with turning 2060 s to 3060 ti?
I live in Iran and 3060 ti is 200 bucks in stock
I can sell my current GPU for 145$ easily

 

[Nighthawk117]

So you say at least there is 36% boost in all aspect with turning 2060 s to 3060 ti?
I live in Iran and 3060 ti is 200 bucks in stock
I can sell my current GPU for 145$ easily

I would say so yes, I'm relying heavily on Cyberpunk but my expectation would be a similar uplift in other games too. I would treat 36% as the baseline improvement.

If this upgrade is only going to cost you $45 then that seems a very good deal to me.

 

[Karadjgne]

3060ti from a 2060Super isn't that much of a difference, realistically, 1 step up. A 3060ti and a 2070Super are pretty much equal.

Ignore fps as a qualifier, fps is a balance. A better gpu means that when maintaining fps compared to the old gpu, the new gpu can use higher detail levels or other digital post processing stuff like Ray Tracing or DSR.

So if the 2060Super gets you med-high in your preferred games to get good fps, the 3060ti would be looking at high or high-ultra settings.

As far as pcie goes, that's a maximum setting, nothing else. A card like a 3060ti will at best use pcie3.0 x12 amount of bandwidth, not even close to pcie4.0 x8 amount of bandwidth, so has no adverse affects for either pcie3.0 or pcie4.0. Now if you were looking at a 3080ti or 3090, they can saturate the bandwidth of pcie3.0 x16 or use more than pcie4.0 x8. Pcie doubles bandwidth size each iteration, so pcie 2.0 x16 = pcie3.0 x8 = pcie4.0 x4

 

[green.masood]

3060ti from a 2060Super isn't that much of a difference, realistically, 1 step up. A 3060ti and a 2070Super are pretty much equal.

Ignore fps as a qualifier, fps is a balance. A better gpu means that when maintaining fps compared to the old gpu, the new gpu can use higher detail levels or other digital post processing stuff like Ray Tracing or DSR.

So if the 2060Super gets you med-high in your preferred games to get good fps, the 3060ti would be looking at high or high-ultra settings.

As far as pcie goes, that's a maximum setting, nothing else. A card like a 3060ti will at best use pcie3.0 x12 amount of bandwidth, not even close to pcie4.0 x8 amount of bandwidth, so has no adverse affects for either pcie3.0 or pcie4.0. Now if you were looking at a 3080ti or 3090, they can saturate the bandwidth of pcie3.0 x16 or use more than pcie4.0 x8. Pcie doubles bandwidth size each iteration, so pcie 2.0 x16 = pcie3.0 x8 = pcie4.0 x4

3060ti is more powerful even rather to 2080. and is equal to 2080 super and btw the later a product will release, the newer tech will be applied in them.
this is my way of thinking.
and for now im with my own 2060 super by in near future i am replacing a 3060ti according to my budget

 

[SkyNetRising]

So you say at least there is 36% boost in all aspect with turning 2060 s to 3060 ti?

IMHO - it's not worth to upgrade just for ~35% performance increase.

Upgrade should give a meaningful difference. At least double performance.