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Which Card(s) Should I Use?

post #1 of 10
Thread Starter 
I've got a quick question here regarding GPU selection- I've got three different options.

Preface: I've got an assortment of different AMD GPU's on hand, 2x R7 260x's, 2x HD 6950's (one flashed as a 6970), and one R9 270x. All of the cards have 2GB of GDDR5.

I understand it's typically better to buy the newest and fastest GPU you can budget for, but I want to know what's better when you have the cards already.
Should I use a 260x Crossfire, a 6970/6950 Crossfire, or just a stand-alone 270x? I'm not entirely sure since I can only find answers for what to buy.

Thanks.
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post #2 of 10
If you considered selling the 260's and 6950's you could crossfire 270x's.
If you wish to keep the cards then I'd advise flashing the remaining 6950 to the 6970 bios and give them a trial run in crossfire*.

*Trialling is the best word to use here because crossfire and SLI can prove to be quite buggy with certain configurations.
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post #3 of 10
Thread Starter 
I would sell the extra cards, but I plan on using them in other machines for a render farm.

I tried to flash the second 6950 before, but it didn't work (or at least according to the number of shaders in GPU-Z).
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post #4 of 10
you could sell all card except one for backup and buy a cheap used r9 290 or rx 470

what would you use to render?
Edited by PontiacGTX - 8/21/16 at 11:50am
post #5 of 10
Thread Starter 
Quote:
Originally Posted by PontiacGTX View Post

what woudl you use to render?
Not sure if you're talking about card or program, but I need all the power I can get to do render stuff for my friend in Blender.
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post #6 of 10
Quote:
Originally Posted by tomytom99 View Post

Not sure if you're talking about card or program, but I need all the power I can get to do render stuff for my friend in Blender.
if you are going to use AMD card luxrender can be better choice than Blender cycles

http://www.luxrender.net/en_GB/blender_2_5

but you could compare them
post #7 of 10
Thread Starter 
Quote:
Originally Posted by PontiacGTX View Post

if you are going to use AMD card luxrender can be better choice than Blender cycles

http://www.luxrender.net/en_GB/blender_2_5

but you could compare them
I'll look into that for my work, but sadly my friend who I render a lot for does cycles render. But thanks for that!

So what I'm understanding right now is that I'm better off using the 6950/70 combo?
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post #8 of 10
For gaming keep the 270 is GCN 1.0 so you have DX12 and driver support, for rendering probably 6950+6970 is faster thumb.gif
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post #9 of 10
Quote:
Originally Posted by tomytom99 View Post

I'll look into that for my work, but sadly my friend who I render a lot for does cycles render. But thanks for that!

So what I'm understanding right now is that I'm better off using the 6950/70 combo?
if you were going to play games the r9 270x is the best choice, but if you can sell them and buy a rx 470 or an used r9 290/x that would be 2.2x faster than a 270x and would have 2x vram, in compute performance





R9 290 OC 4GB =R9 390 8GB, R9 290x 4/8GB OC=R9 390x 8GB
also mitsuba is an option but I dont know how amd performance in the renderer is
In most scenarios luxrender uses less time than cycles
https://www.blenderguru.com/articles/render-engine-comparison-cycles-vs-giants/
https://bartoszstyperek.wordpress.com/2015/02/14/luxcore-vs-mitsuba-vs-cycles-round-3/
Edited by PontiacGTX - 8/21/16 at 2:29pm
post #10 of 10
Thread Starter 
Quote:
Originally Posted by PontiacGTX View Post

if you were going to play games the r9 270x is the best choice, but if you can sell them and buy a rx 470 or an used r9 290 that would be 2.2x faster than a 270x and would have 2x vram, in compute performance
Thanks! I haven't been quite sure what would be the best, so this really helped. I actually might wait for the RX490, since I've been planning on making a big upgrade for a while now (I just kept missing the low price point periods on cards like the 295x2 and the 7990, and I bought the 270x because I needed something to replace my 7870 when it flopped).

So thanks again, and in the meanwhile I'll keep trying to get my server board with four Quadro FX 570's to work as the main rendering machine.
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