CF r9 290x vs. CF hd 7990

snon200 · Jul 20, 2015

which one of the options above whould be better?
i know that alone the hd 7990 is better than the r9 290x but because the hd 7990 is already 2 gpu's crossfired im afraid the 4 gpu's wont perform as good as just 2.

HCSn · Jul 20, 2015

Yeah, two 7990's is gonna be a huge headache to configure and I'm guessing you'd see more stuttering and flickering than two 290x's.

snon200 · Jul 20, 2015

HCSn :

but will the hd 7990 be better at performance than the r9 290x's?

HCSn · Jul 20, 2015

snon200 :

In pure compute performance, maybe. But I can tell you right now you will not have a good experience trying to game on two 7990's.

chaosgs · Jul 20, 2015

http://www.kitguru.net/components/graphic-cards/zardon/sapphire-hd7990-quadfirex-review/24/

It all comes down to how much $$$ you wanna spend. IDK how much a 7990 goes for now days. But yes to answer your question the 7990 Quad is faster.

snon200 · Jul 20, 2015

chaosgs :

ok thank you, on amazon the r9 290x goes for 275$ and the hd 7990 goes for 290$, not a big difference

snon200 · Jul 20, 2015

HCSn :

snon200 :

In pure compute performance, maybe. But I can tell you right now you will not have a good experience trying to game on two 7990's.

why? whats the difference?

HCSn · Jul 20, 2015

snon200 :

HCSn :

why? whats the difference?

4-way crossfire and SLI tends to be a huge pain to configure correctly, not all games support it, the more GPU's you add the more stuttering you're likely to experience.

chaosgs · Jul 20, 2015

For that price, id get a 7990....Thats a damn good deal. If your cpu is fast enough and both pcie lanes are 16x/16x. Than you should be ok.

snon200 · Jul 20, 2015

chaosgs :

this is the build i want to buy: http://pcpartpicker.com/p/zv7Tf7
im still not sure if the mobo will be able to support the 2 hd 7990 but i have another thread opened about that.. http://www.tomshardware.com/answers/id-2728918/mobo-build.html
do you think this build will be good?

chaosgs · Jul 20, 2015

I dont see the PSU. The mobo will handle it. I dont understand the xeon or know its performance. Do you own the first 7990?

snon200 · Jul 20, 2015

chaosgs :

oops you're right, now you can see the psu: http://pcpartpicker.com/p/YCZZmG
i have been told by many people that this xeon is better than the i5 4690k and i dont need to oc it so i dont need a very good cpu cooler so, its basically better than the i5 4690k..
and no, i dont own any of the parts yet

chaosgs · Jul 20, 2015

Well, I cant find a 7990 for cheap. If your looking for used ones on Amazon the cheapest is $310 and there is only 1 of them.

Everything looks good, maybe double your ram to 16GB though 2x8, so you can upgrade to 32GB later.

But, I doubt you can get 2 7990s for what you think you can. You were originally planning on spending $600ish. If you can get it, get it now (2 7990s). If not the next thing to do is compare 390 $330 each to 290X $240 each. You will not be able to get 7990 quadfire performance for less than $1000, which is essentially 4 290s.

snon200 · Jul 20, 2015

chaosgs :

idk why u couldnt find it but there is one hd 7990 that is being sold for 290$ and i suppose that until ill need another one the prices will go down and ill be able to find another one in this price

chaosgs · Jul 20, 2015

Maybe its because of my location. Worst case you can trifire it with a 7970/7950. Sir you are set to go. But you definitely want more ram.

snon200 · Jul 20, 2015

chaosgs :

why whould i need more than 8gb for gaming? i think im gonna start with 8 and if i see that i use all of it and i need more ill just get 8 more and have 16, anyway, i still think that the mobo isnt enough for the system so ill get the ASRock FATAL1TY Z97 KILLER as i was told in another post

HCSn · Jul 20, 2015

snon200 :

You don't. 16 is good for general multitasking, but you won't need it for gaming. You will certainly not need 32GB unless you want to do serious video editing...

CF r9 290x vs. CF hd 7990

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