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GTX 690 to avoid pci-e 2.0 bottleneck?

bee

bee

bee

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Yes i realise the card hasn't even been announced yet but after seeing some of the recent triple monitor pci-e 2.0 vs 3.0 benchmarks it got me thinking.

I have a 2500k, msi p67 gd65 mobo and a gtx 680 so obviously only pci-e 2.0 is available. Now i definitely want to go down the sli route again but i'd really rather not have to buy a new (ivybridge) cpu and mobo to get the best out of it. Was just wondering if i bought a gtx 690 down the line, would the fact that its a single card running in a pci-e 2.0 x 16 slot mean that it would avoid the pci-e 2.0 bottleneck? as i thought it's only slow because both lanes run at only x 8 speed in sli.

It will be powering a triple monitor setup as i said so its definitely going to be worth either going pci-e 3.0 or buying a 690

any thoughts?
 
Cleeecooo said:
This is one of the better boards with Pcie 3. you can keep your current CPU, infact, you can even get a cheaper board; the following is simply one of my personal favourites:
http://www.overclockers.co.uk/showproduct.php?prodid=MB-054-AK&groupid=701&catid=5&subcat=1990

And obviously, that means I would get the pcie 3 due to the high res

Also, a GTX 690 will most likely be more expensive than 680 SLI
Click to expand...

:rolleyes: Unfourtunalty you only get true PCI Ex-3 with a Z77 board and a Ivy bridge cpu.
 
A dual GPU card running at 16x is no different to two separate cards running at 8x.

PCI-E 2.0 is also not a bottleneck unless you run out of VRAM which on 2GB cards would require you to be running at insane resolutions (see Vega's post in monitor forum).
 
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x79 boards are true PCI-Ex3.

I don't know if an ivy cpu and a z68 board gives you PCI-3, but you defo need an IVY cpu.

Which is why I skipped SB, I'm actually perplexed why Intel released SB with out PCI-EX3??
 
opethdisciple said:
:rolleyes: Unfourtunalty you only get true PCI Ex-3 with a Z77 board and a Ivy bridge cpu.
Click to expand...

Wut?
The lanes are all the same physically, hell, any socket 1155 boards primary PCI-E lane could be turned PCI-E 3.0 with an Ivy CPU, it's the Crossfire/SLI switches that depend on other stuff.


opethdisciple said:
x79 boards are true PCI-Ex3.

I don't know if an ivy cpu and a z68 board gives you PCI-3, but you defo need an IVY cpu.

Which is why I skipped SB, I'm actually perplexed why Intel released SB with out PCI-EX3??
Click to expand...
February 2011, PCI-E 3.0 GPU's never came around until 2012.

They released a PCI-E 3.0 platform (SB-E) before PCI-E 3.0 GPU's came out, socket 1155 is meant to be mainstream.

If you're perplexed by Intel, surely you should be perplexed by AMD who not only don't have any PCI-E 3.0 platforms, but can't even produce CPU's to catch up with their GPU's.
 
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oh :( new cpu and mobo it is then. any advantage to x79 over z77? seems like the 3570k is the cpu to go for, will get another 680 at the same time i think
 
mmj_uk said:
A dual GPU card running at 16x is no different to two separate cards running at 8x.

PCI-E 2.0 is also not a bottleneck unless you run out of VRAM which on 2GB cards would require you to be running at insane resolutions (see Vega's post in monitor forum).
Click to expand...

so a 690 wouldn't be bottlenecked by pci 2.0 on my mobo?
 
windheaven said:
so a 690 wouldn't be bottlenecked by pci 2.0 on my mobo?
Click to expand...

Maybe this link (PCIe 1.1 vs 2.0 vs 3.0) will indicate if it will make any difference, answer is there is no bottlenecks to cause concern.

I'm using a dual-gpu in the 5970 and plan to replace that soon with either GTX690/HD7990 and continue using my excellent PCIe 2.0 mobo. Difference is so minute you would never notice it gaming. If your playing on (up to 24") single display then feel free to max it out.
 
Nothing has even used the full bandwidth on 2.0 so you have no need to worry.

PCIE 3 is something Intel didn't even want to bother with right now because it's money spent on providing very little.

It's just another thing they try and convince you that you must have but you really don't need. IIRC Tom @ OC3D put 2 against 3 on Quadfire 7970s and there was a 3% difference in speed.
 
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