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Is this all crossfire compatible

Last response: in Graphics & Displays
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May 20, 2014 11:21:02 PM

I'm getting the power supply, motherboard and cooling for my first gaming PC next month and I was wondering if I will be able to get two R9 280 (non x)s without any problems, running in crossfire. (I have everything else.)
GPU: MSI Twin Frozr R9 280
Motherboard: Gigabyte GA-970A-UD3P
Power supply: Corsair TX750M Hybrid Modular PSU
4 questions: Can this GPU even run crossfire? Is that power supply enough? Does that motherboard support crossfire? If all yes do I need a crossfire bridge?
Thanks.

More about : crossfire compatible

a c 96 ) Power supply
a c 222 V Motherboard
May 20, 2014 11:46:57 PM

Motherboard runs CrossFireX but not in good performance (X16-X4 i'm not even talking about PCI-E gen. 2), 750W (since R9 280 is just re-badged HD-7950 http://www.tomshardware.com/forum/325953-28-750w-850w-c...) plenty for CrossFireX of two R9 280's and R9 280's are CrossFireX compatible (I'm pretty sure that 280 can go 4way CF :) ).

Edit: If you want good performance, better to get single powerful GPU like R9 290(X) or GTX-780(ti)
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May 21, 2014 3:48:37 AM

Ahmadjon said:
Motherboard runs CrossFireX but not in good performance (X16-X4 i'm not even talking about PCI-E gen. 2), 750W (since R9 280 is just re-badged HD-7950 http://www.tomshardware.com/forum/325953-28-750w-850w-c...) plenty for CrossFireX of two R9 280's and R9 280's are CrossFireX compatible (I'm pretty sure that 280 can go 4way CF :) ).

Edit: If you want good performance, better to get single powerful GPU like R9 290(X) or GTX-780(ti)


Yeah, I want to have two GPUs because it's modular and I can get one at a time. How much of an impact will that X4 bandwidth make compared to if it was 16 pin x16 bandwidth?
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a c 96 ) Power supply
a c 222 V Motherboard
May 21, 2014 6:23:47 AM

Nagromicous said:
Ahmadjon said:
Motherboard runs CrossFireX but not in good performance (X16-X4 i'm not even talking about PCI-E gen. 2), 750W (since R9 280 is just re-badged HD-7950 http://www.tomshardware.com/forum/325953-28-750w-850w-c...) plenty for CrossFireX of two R9 280's and R9 280's are CrossFireX compatible (I'm pretty sure that 280 can go 4way CF :) ).

Edit: If you want good performance, better to get single powerful GPU like R9 290(X) or GTX-780(ti)


Yeah, I want to have two GPUs because it's modular and I can get one at a time. How much of an impact will that X4 bandwidth make compared to if it was 16 pin x16 bandwidth?


Here you'll find answer http://www.tomshardware.com/reviews/pci-express-scaling...
And I'm pretty sure that in PCI-E gen.3 GPU performance impact would be higher.
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May 23, 2014 9:00:34 AM

Ahmadjon said:
Nagromicous said:
Ahmadjon said:
Motherboard runs CrossFireX but not in good performance (X16-X4 i'm not even talking about PCI-E gen. 2), 750W (since R9 280 is just re-badged HD-7950 http://www.tomshardware.com/forum/325953-28-750w-850w-c...) plenty for CrossFireX of two R9 280's and R9 280's are CrossFireX compatible (I'm pretty sure that 280 can go 4way CF :) ).

Edit: If you want good performance, better to get single powerful GPU like R9 290(X) or GTX-780(ti)


Yeah, I want to have two GPUs because it's modular and I can get one at a time. How much of an impact will that X4 bandwidth make compared to if it was 16 pin x16 bandwidth?


Here you'll find answer http://www.tomshardware.com/reviews/pci-express-scaling...
And I'm pretty sure that in PCI-E gen.3 GPU performance impact would be higher.


Okay thanks for the reply, so I could get at least a 50% improvement with the extra GPU on any game (I don't plan to play F1... ever) Correct me if I'm wrong and if that's correct then don't trouble yourself with replying.
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a c 96 ) Power supply
a c 222 V Motherboard
May 23, 2014 9:06:20 AM

Nagromicous said:
Ahmadjon said:
Nagromicous said:
Ahmadjon said:
Motherboard runs CrossFireX but not in good performance (X16-X4 i'm not even talking about PCI-E gen. 2), 750W (since R9 280 is just re-badged HD-7950 http://www.tomshardware.com/forum/325953-28-750w-850w-c...) plenty for CrossFireX of two R9 280's and R9 280's are CrossFireX compatible (I'm pretty sure that 280 can go 4way CF :) ).

Edit: If you want good performance, better to get single powerful GPU like R9 290(X) or GTX-780(ti)


Yeah, I want to have two GPUs because it's modular and I can get one at a time. How much of an impact will that X4 bandwidth make compared to if it was 16 pin x16 bandwidth?


Here you'll find answer http://www.tomshardware.com/reviews/pci-express-scaling...
And I'm pretty sure that in PCI-E gen.3 GPU performance impact would be higher.


Okay thanks for the reply, so I could get at least a 50% improvement with the extra GPU on any game (I don't plan to play F1... ever) Correct me if I'm wrong and if that's correct then don't trouble yourself with replying.


I wouldn't try to CrossFireX with X16-X4 and even with AMD cards because AMD has not so good CF optimization than SLI have, so additional card might not work good at all, I would try to sell your current GPU and get new more powerful one or change motherboard to at least M5A99X EVO or 990FXA UD3
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