does PCI 2.0 Bottleneck with Maxwell (800 series)?

[brandon888]

Simple question ... i have a I7 3930K .... and 660 ATM ... i will upgrade to 860/870 and want to know , i have to go for PCI 3.0 for 800 series and sell my I7 3930K or stay with PCI 2.0 cause there will not be any bottleneck ?
Keep in mind i mean only single card setups .... i will not SLI ...

 

[Erenhardt]

It will be comparable bottleneck to running maxwell 860/870 with i7 5770k

 

[sushiwarrior]

It's doubtful that any next gen card would saturate x16 2.0. In SLI, x8 x8 would definitely be a bottleneck, but I doubt a single card will be any problem.

 

[Kippa]

This has cheered me up. I have an oldish rig with PCI 2.0 16x slots and was thinking of getting a single card gpu. Thanks for the information.

 

[FalseChristian]

You're smart to wait for the 800-series. You already have a kick-ass GTX 660 and a GTX 760 won't be much faster so it'd be a waste of money.

 

[toyota]

never mind

 

[Kippa]

Date wise when is Maxwell due out? Or rumoured to be out?

 

[tviceman]

Probably at least a year from now, possibly fall of 2014.

 

[brandon888]

Sorry all for my Terrible English hope you understand what i asked ^_^

sushiwarrior

yes i meant only one card but even on sli i have 2.0 16X slots .. not 8X .... so sli will work like PCI 3.0 on 8X on both slots

i saw that PCI 1.0 on 16X got 95% perfromance from 680 .... only 5% bottleneck .... so i hope double bandwidth from PCI 2.0 16X will hande single card from 800 or 900 series ....

I bought I7 3930K Brand new for 250$ ... so i don't want to change socket unless i get bottleneck with 800 series card : (

 

[brandon888]

someone told me that 2.0 16 X on both slots can even handle 2 titans .... so then no worries about 800-900 series ? :X no pci 2.0 bottleneck ?

 

[RussianSensation]

Don't worry about the bottleneck. Even if there is a 5-10% bottleneck (which won't know about until those cards are released), Maxwell (2014) and Volta (2016) GPUs should be 2-3x faster than your card. If anything, you'll become more CPU bottlenecked before PCIe 2.0 x16 bottlenecked.

 

[brandon888]

Don't worry about the bottleneck. Even if there is a 5-10% bottleneck (which won't know about until those cards are released), Maxwell (2014) and Volta (2016) GPUs should be 2-3x faster than your card. If anything, you'll become more CPU bottlenecked before PCIe 2.0 x16 bottlenecked.

hope I7 3930k oced to 4.4 GHZ 24/7 will handle 870 at least at 1080 P


Thank you man ... i read many of your posts and im sure i can give people good advice ...

Then switching to Haswell from sandy-e will be pointless .... i will keep my CPU till Volta and then change whole system ... that will be the best i think

 

[RussianSensation]

hope I7 3930k oced to 4.4 GHZ 24/7 will handle 870 at least at 1080 P

B, you are stressing too much. Enjoy the rig you currently have and once next generation CPUs and GPUs come out, you can:

1) Review benchmarks on sites like TechSpot, GameGPU, PCgameshardware that specifically test CPU&GPU combos in games

2) Ask for feedback on forums from PC gamers what their gaming experience is like with an i7 3930K + next gen GPU vs. what you have.

For now, it's too difficult to predict what will happen with multi-threaded for next generation games (i.e., 4-core Haswell vs. 6-core SB-E) and how fast GTX870 and 970 will be exactly to extrapolate accurately their PCIe 2.0 x16 bottleneck.

Since you got such a good price on the 3930K anyway, if anything you can sell it later and step up to Haswell/Broadwell or SB-E if there is a need. Right now the biggest bottleneck in your PC for games is the GPU anyway. Until you upgrade that, there is no need to stress about PCIe 2.0 or your CPU. You can safely enjoy gaming over the next 12 months with what you have.

 

[brandon888]

B, you are stressing too much. Enjoy the rig you currently have and once next generation CPUs and GPUs come out, you can:

1) Review benchmarks on sites like TechSpot, GameGPU, PCgameshardware that specifically test CPU&GPU combos in games

2) Ask for feedback on forums from PC gamers what their gaming experience is like with an i7 3930K + next gen GPU vs. what you have.

For now, it's too difficult to predict what will happen with multi-threaded for next generation games (i.e., 4-core Haswell vs. 6-core SB-E) and how fast GTX870 and 970 will be exactly to extrapolate accurately their PCIe 2.0 x16 bottleneck.

Since you got such a good price on the 3930K anyway, if anything you can sell it later and step up to Haswell/Broadwell or SB-E if there is a need. Right now the biggest bottleneck in your PC for games is the GPU anyway. Until you upgrade that, there is no need to stress about PCIe 2.0 or your CPU. You can safely enjoy gaming over the next 12 months with what you have.

only thing i can't get it's .... on what depends pci bottleneck ? just on memory bandwidth of a card ? or on power ? or on what ?


for example 780 has 288 Gt/s bandwidth and if 860 will be with 256GT/s for example .... can there will be still pci bottleneck for 860 ?

i mean if 780 has no bottleneck with pci 2.0 with 288Gt/s ... does it means that any card from 800 or 900 seres with under 288Gt /s won't be bottleneck with pci 2.0 cause they will have lower memory bandwidth then 780 ?

Or that does not work like that and my logic failed ?

 

[brandon888]

Well ... as i sew it's a hard question ))

 

[Fanatical Meat]

This always comes up from PCI, to apg, 2x,4x,8x, now to PCI-e and it never really makes any difference

 

[boxleitnerb]

It may, but definitely not in general. I would expect very few cases depending on game, settings and actual hardware at that time. Yet nothing to worry about.

 

[blastingcap]

It's doubtful that any next gen card would saturate x16 2.0. In SLI, x8 x8 would definitely be a bottleneck, but I doubt a single card will be any problem.

This.

 

[brandon888]

boxleitnerb

blastingcap

well thank you all D: i was worried about it cause with my cpu I7 3930K that will be very sad to get bottleneck even with midrange 860 : ( only case of pci 3.0 .... not cpu power .... so now im sure that i won't change my cpu till 2016 before volta

 

[lamedude]

Thanks to this thread I now know there is indeed a PCI 3.0 but it just removed 5V which is why I never saw it.