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AMD x4 955 Bottleneck GTX 560 SLI? - Page 2

post #11 of 19
Thread Starter 
Yes i know that, i asked it already in a older thread and now i'm aware of this so i have to sell my current gtx 560 1gb and get 2 new gtx 560 2GB. Altough i will consider the 7870 or something in the same pricerange. I found the 2 2GB cards for 378 € so that sounds like a good deal
And i'm using the Non Ti version at 1920x1080 resolution

It seems the opinions about bottleneck are 50/50? Default speed of the cpu is 3.2Ghz, and now i changed it to 3.6 without any problems and i see a diffrence in heavy maps on Battlefield like Gulf Of Oman. So if i change it to 3.8 or even 4.0 i can be practicaly sure that i wont have a bottleneck?
Btw, i just checked price for the HD7870 and i can buy it for 349€ That's 30€ cheaper than buying 2 GTX 560 2GB... I think it will be the best buy i guess.. ? smile.gif
But will this cpu and the hd 7870 perform equally? Don't want a bottleneck again
The cpu is already a few years on the market but i have to say it's still working pretty fast, i installed Windows on a sata600 ssd and everything runs very smooth. Yes things like compression, encoding etc.. are going normal, not fast, but certainly not slow. So i was hoping i could stick with my current cpu without replacing it with for example a crappy Bulldozer FX cpu

Excuse me for my English, it's not my native language

Thanks for the replies
post #12 of 19
HD 7870=580GTX in performance
480GTX=570GTX in performance

http://www.tweaktown.com/articles/4597/amd_radeon_hd_7870_2gb_reference_video_cards_in_crossfire/index.html

http://www.hardocp.com/article/2010/03/26/nvidia_fermi_gtx_470_480_sli_review

http://www.guru3d.com/article/geforce-gtx-570-sli-review/

and for sure 7870 Cfx Will make a bottleneck
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post #13 of 19
Back in the day when I ran a 955BE it held back my 5850CF even at 3.8ghz. I can't imagine trying to run multiple newer cards on it. Moving the same cards to an intel i7 980x rig increased my FPS by 25-30% or more in every game I played that wasn't severely GPU limited.
post #14 of 19
Thread Starter 
Then i think i will stick to the GTX 560, since the HD7870 will create a 100% bottleneck with my AMD x4 955 frown.gif

On the benchmark page from guru3D they tested a SLI setup and it's a littlebit better than a stock gtx 580. http://www.guru3d.com/article/geforce-gtx-560-sli-review/13

So i think my cpu will handle this but not the newer hd7870

Or maybe i should buy a single hd7870 and maybe in the future i will upgrade my mobo and cpu to a i7 for example


I think i will get migraine because i can't choose smile.gif
Edited by misterD - 4/27/12 at 5:28pm
post #15 of 19
Quote:
Originally Posted by misterD View Post

Then i think i will stick to the GTX 560, since the HD7870 will create a 100% bottleneck with my AMD x4 955 frown.gif
On the benchmark page from guru3D they tested a SLI setup and it's a littlebit better than a stock gtx 580. http://www.guru3d.com/article/geforce-gtx-560-sli-review/13
So i think my cpu will handle this but not the newer hd7870
Or maybe i should buy a single hd7870 and maybe in the future i will upgrade my mobo and cpu to a i7 for example
I think i will get migraine because i can't choose smile.gif

Your 955@3.6+ghz will NOT bottleneck a single 7870 90% of time. You will see it in a few cases like cpu intensive games. At one point, I had a 965@3.9 ghz and an overclocked GTX 580 and I didnt see many bottlenecks. It ran at ~96% with the witcher 2 and 99% in most other games with the exception of cpu intensive games like SC2, Civ 5, WoW, ect. I would def get a single 7870 but If you do go higher I would suggest getting a faster CPU, but for now you will be perfectly fine.
post #16 of 19
Thread Starter 
Okey then, a HD7870 it will be. But i'm also thinking about future proofing my hardware, GPU especially. If i should buy 2 gtx 560, then yes it will work good ATM. But what in 2, 3 years? With DirectX12 or something lol. In the future i could buy another hd7870 and then (i hope) i still can play games at ultra settings

2x gtx 560 will have the performance of a gtx 580 but as you can see in this benchmark, 2x 7870 will double performance so i hope it's still future proof until 2020 or so smile.gif

4597_20_amd_radeon_hd_7870_2gb_reference_video_cards_in_crossfire.png

Also i will upgrade my PSU from 500 to 700watt so i can use the same psu when adding another GPU later. I just want to spend my money to hardware that will be long lasting

I always thought Nvidia was the best buy but honestly, i did way more research than before and i saw that power consumption on AMD cards is waaay better then Nvidia's GTX cards. Somebody has to pay the electric bills smile.gif
Edited by misterD - 4/27/12 at 6:06pm
post #17 of 19
Here's your best tip for futureproofing: have money to spare for upgrades.
Next tip: only cases and PSUs are futureproof components of a system.

A 7870 is a great buy now, but it'll be pretty much outdated like every other GPU in 2-3 years. Especially when we have new consoles coming out in probably Q4/2013, developers and publisher are also taking more interest in PC gaming now, so we'll probably be seeing more games coming out for PC with enhanced graphics and higher system demands than before. BF3 was the first title, and more are coming.
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post #18 of 19
These benchmarks were performed with an HD 7850. Most say that games perform better on a Phenom than any BD, so I think you're fine..

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post #19 of 19
Quote:
Originally Posted by UsedPaperclip View Post

Quote:
Originally Posted by PontiacGTX View Post

GTX 560 TI?
and
resolution?

The higher the Res the less bottleneck your CPU will give you.

The higher the resolution, the bigger the demand place on the CPU. The reason it looks like higher resolutions are less CPU dependent in benchmarks is because theyre usually tested with a single video card like a 6970 or so, and so when you get into the 1920x1200 and 2560x1600 range, the GPU is running out of muscle. A CPU thats 20% faster at 1280x1024 with a single video card will still be 20% faster at 2560x1600 with multiple GPU's.

And no, a 955 will not bottleneck a pair of GTX560's in SLI especially with a solid overclock of the CPU and the NB.
Edited by MacLeod - 4/28/12 at 4:49pm
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