PCIE gen 2 and modern GPU's

[bru]

Having a X58 motherboard with a Xenon 5650 @4.4GHz

Do you think that only having PCIE gen2 will hold back the newest GPU's from AMD or NVidia ?

If PCIE does bottleneck the latest cards, are we talking 5% 10% 20% or what ?

 

[Mauller]

I think Anandtech or Tomshardware did a test a while back, i think the performance difference was in the low single digits. And if we are talking using a single card then i think it won't make much of a difference.

 

[Freddie1980]

You might get a handful of extra of frames on PCI gen 3 due to better latencies but PCI2 16x has a ton of bandwidth for today's card, you will be fine.

 

[Dave2150]

Having a X58 motherboard with a Xenon 5650 @4.4GHz

Do you think that only having PCIE gen2 will hold back the newest GPU's from AMD or NVidia ?

If PCIE does bottleneck the latest cards, are we talking 5% 10% 20% or what ?

980ti/FuryX are already slightly held back by PCI-E v2.

Not a good idea to partner the next gen £600+ cards with a 7 year old x58 setup that can be bought 2nd hand today for £100.

Sure it will work and be an upgrade, but those CPU's are very long in the tooth today for gaming.

I had a huge jump in gaming performance going from a 920 @ 3.8Ghz to a 6700k @ 4.8Ghz, 5 months ago.

 

[Dave2150]

I think Anandtech or Tomshardware did a test a while back, i think the performance difference was in the low single digits. And if we are talking using a single card then i think it won't make much of a difference.

It was tomshardware, though they only tested with a 980, not a 980ti or titanX.

A 980ti/titanX is much faster than a 980, so the difference between pci-e v2 and v3 would be greater etc.

Now, if the next generation cards are almost double the 980ti performance, then PCI-E V2 will become even more limiting.

I'd not be surprised to see a 20% or greater performance delta between the two, for next generation cards.

 

[Mauller]

But in a single card situation you are going to transfer little over the PCI bus anyway, games are made to reduce the number of PCI requests since they know it can cause stalling.

But in multi card situations then he will certainly be held back a bit.

 

[Armageus]

https://www.techpowerup.com/mobile/reviews/NVIDIA/GTX_980_PCI-Express_Scaling/22.html

1% for 980, struggling to find any titanx or 980ti results.

A couple of games perform noticeably worse E.g 10% but they are E.g wolfenstein that uses streamed textures etc.

 

[setter]

I personally didnt notice much difference when trying my 980ti on my old X58 setup.

 

[Kaapstad]

https://www.techpowerup.com/mobile/reviews/NVIDIA/GTX_980_PCI-Express_Scaling/22.html

1% for 980, struggling to find any titanx or 980ti results.

A couple of games perform noticeably worse E.g 10% but they are E.g wolfenstein that uses streamed textures etc.

You only have to ask lol.

For most things the difference is about 1% or 2% switching from PCI-E 2.0 to 3.0

 

[Kaapstad]

4 EVGA SC TitanXs @stock X16/X8/X8/X8
5960X @4.0
Tomb Raider Maxed @2160p

PCI-E 1.0

Spoiler

PCI-E 2.0

Spoiler

PCI-E 3.0

Spoiler