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Would PCIe 2.0 bottleneck the GTX 980?

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  • Gtx
  • Bottleneck
Last response: in Graphics & Displays
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September 20, 2014 10:24:50 AM

I'm looking to upgrade to the 980 and, as the title says, I'm hoping I wouldn't get bottlenecked by my lack of PCIe 3.0 slots.

More about : pcie bottleneck gtx 980

September 20, 2014 10:56:55 AM

I don't think its a bottleneck . well PCI 3.0 is faster But its not like having weak CPU i guess .

But it seems like your board is old and your CPU might be old too . so why don't you just go for totally new System ? you can make your GTX 980 fly if you choose the right parts for it .

Suggestion :

CPU : i5/i7 Intel CPU ( they dont have much difference when it comes to Gaming ) . if your not overclocking then grab a non-K Cpu
Motherboard : if your not overclocking then go with H boards ( Z board are for OCing )
RAM : 8GB is great but go for 16GB if you wanna be more futureproof
PSU : At least 650Watt Quality brand . i Suggest 750Watt for futureproof thing again :D 

5th Gen of intel is coming . you might wanna consider that too . and AMD 390x will come out too ( not too soon but it will come with very good features like water cooling system and great performance boost )

So first of all just wait a bit . dont wanna wait and feel like your ready ? then go for new parts too . still no ? then your gonna be fine but you might experience 80-90% of the fun . good luck ;) 
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September 20, 2014 1:35:50 PM

DukiNuki said:
I don't think its a bottleneck . well PCI 3.0 is faster But its not like having weak CPU i guess .

But it seems like your board is old and your CPU might be old too . so why don't you just go for totally new System ? you can make your GTX 980 fly if you choose the right parts for it .

Suggestion :

CPU : i5/i7 Intel CPU ( they dont have much difference when it comes to Gaming ) . if your not overclocking then grab a non-K Cpu
Motherboard : if your not overclocking then go with H boards ( Z board are for OCing )
RAM : 8GB is great but go for 16GB if you wanna be more futureproof
PSU : At least 650Watt Quality brand . i Suggest 750Watt for futureproof thing again :D 

5th Gen of intel is coming . you might wanna consider that too . and AMD 390x will come out too ( not too soon but it will come with very good features like water cooling system and great performance boost )

So first of all just wait a bit . dont wanna wait and feel like your ready ? then go for new parts too . still no ? then your gonna be fine but you might experience 80-90% of the fun . good luck ;) 


My board is the only old part, it's a P67, but my CPU is an i5-3570k @ 4.5GHz. If PCIe 2 won't bottleneck, I'll wait to upgrade.
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September 20, 2014 1:46:28 PM

no pcie 2.0 will not bottleneck and will likely not anytime soon. gpus dont even come close to the bandwidth limit. though $4000 ssds are approaching the bottleneck.

this will answer all your questions....
http://www.pugetsystems.com/labs/articles/Impact-of-PCI...

pcie 3.0@x8 is the same speed as pcie 2.0@16x. even if you ran sli 980s on 2.0@x8, you still wouldn't bottleneck. a single 980 on 2.0@x16 will be fine.
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September 24, 2014 3:10:09 PM

nikoli707 said:
no pcie 2.0 will not bottleneck and will likely not anytime soon. gpus dont even come close to the bandwidth limit. though $4000 ssds are approaching the bottleneck.

this will answer all your questions....
http://www.pugetsystems.com/labs/articles/Impact-of-PCI...

pcie 3.0@x8 is the same speed as pcie 2.0@16x. even if you ran sli 980s on 2.0@x8, you still wouldn't bottleneck. a single 980 on 2.0@x16 will be fine.


What exactly is the bandwidth limit for PCIE 2.0? I heard even PCIE 1.0 16x runs well with modern cards. Is that true? The 980 has something like 300 mbps (is it mbps or MB/s??). I believe that is also over PCIE 3.0 16x bandwidth. I think it's the wrong thing. What spec on the 980 determines bandwidth anyway?

OP: I doubt you'll have any problems. I just installed a 980 and I'm using a 2700k. Everything looks fine to me so far.

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