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Windows 7: GPU Question

20 Feb 2013   #1
Andreas W

Windows 7 Home Premium x64
 
 
GPU Question

Hi, I got a P7P55D MB and I would like to buy a new graphic card or it's for my brother and I am not quite sure what to do, his budget is about 1700 SEK ( Swedish Currency ) I was thinking 2x 7750 2GB since they are cheaper then some other cards, but that card is a 3.0 PCIe while the MB he got uses 2.0 but most 2.0 GPU's are quite thin when it comes to shop having them in stock. And since there are litteraly a million different GPU's I' quite clueless what would be the best performance for money.

Any help or some explanation would be greatly appreciated

Edit 1: Forgot that he uses a Corsair 650 Modular PSU


My System SpecsSystem Spec
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20 Feb 2013   #2
bobkn

Windows 7 Pro X64 SP1
 
 

PCI-E 3 cards are backwards compatible with PCI-E 2.x motherboards. Don't worry about that.

I think that a single Radeon HD 7850 card would outperform two 7750s in Crossfire, for about the same price. The single card would have the advantage of not using Crossfire.

(Tried that a few years ago with a couple of 4870s. I found the drivers to be problematic then. Maybe they're better now.)
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21 Feb 2013   #3
Andreas W

Windows 7 Home Premium x64
 
 

Ye that they are backwards compatible I know of it just seems a bit waste to me since he wont get full bandwidth but I guess that don't really matter, and never used AMD cards before so I'm a bit worried about that too with the whole crossfire thing. But I will look up the 7850.
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21 Feb 2013   #4
Erick Aguilar

Windows 7 professional X64
 
 

You, nor him will se any difference between PCIE 2.0 or 3.0.
None. Zero. Null. Nada.
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21 Feb 2013   #5
Andreas W

Windows 7 Home Premium x64
 
 

So I guess we will go with a single 7850 then since they got a deal on that one and you get 2x games with it. Thanks for all the help
My System SpecsSystem Spec
21 Feb 2013   #6
bobkn

Windows 7 Pro X64 SP1
 
 

Quote   Quote: Originally Posted by Andreas W View Post
So I guess we will go with a single 7850 then since they got a deal on that one and you get 2x games with it. Thanks for all the help
You won't regret it.

All that I've read suggests that no current graphics card can saturate a PCI-E X16 2.0 slot.

One review site managed to show a small loss in performance with a pair of 7970s used for GPU computing, but software that would expose that is never seen by most people. The effect was modest, anyway.
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