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GTX 780 vs. Sapphire 7990

Last response: in Graphics & Displays
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August 10, 2013 3:39:53 PM

I know that the GTX 780 is about $80 less expensive but the 7990 is so much better performance wise but, I hear dual GPU can cause problems and that Crossfire is kind of broken, I only plan to play on single monitor 1920x1080 and I know 7990 and kinda the 780 are both overkill but I like the 6GB of Vram and the fact I'll probably get a 2560x1440 about a month after I get this PC and I plan to mod the crap out of Skyrim so the 6GB of Vram will come in handy even though I know I probably won't go over 4GB of Vram even if I put like 300 mods in, I'm leaning towards Sapphire 7990 but the only thing stopping me from going all in is the fact it's a dual GPU card, should I overlook that and just get it? Thanks for any help also, it'll be paired with a Intel Core i7-3930K (or whatever you guys suggest for the suggested graphics card, prefer to keep the CPU under $600) and 8 or 16GB Corsair Vengeance Pro Series Red 1600Mhz RAM if that makes any more difference.

More about : gtx 780 sapphire 7990

August 10, 2013 3:43:51 PM

HowBoutDemPats12 said:
I know that the GTX 780 is about $80 less expensive but the 7990 is so much better performance wise but, I hear dual GPU can cause problems and that Crossfire is kind of broken, I only plan to play on single monitor 1920x1080 and I know 7990 and kinda the 780 are both overkill but I like the 6GB of Vram and the fact I'll probably get a 2560x1440 about a month after I get this PC and I plan to mod the crap out of Skyrim so the 6GB of Vram will come in handy even though I know I probably won't go over 4GB of Vram even if I put like 300 mods in, I'm leaning towards Sapphire 7990 but the only thing stopping me from going all in is the fact it's a dual GPU card, should I overlook that and just get it? Thanks for any help also, it'll be paired with a Intel Core i7-3930K (or whatever you guys suggest for the suggested graphics card, prefer to keep the CPU under $600) and 8 or 16GB Corsair Vengeance Pro Series Red 1600Mhz RAM if that makes any more difference.


Hi - I own & like my AMD card, but in this instance you should opt for the gtx 780.
The negatives of the 7990 outwiegh it's pros.

The annoying coil whine reported by users and reviewers in itself would
steer me away from it.
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August 10, 2013 3:51:02 PM

Several things:

1) You do NOT have 6GB of VRAM with a 7990. It's in crossfire, remember? That means that the VRAM doesn't stack - it has two chips with 3GB of VRAM each, which means you only have 3GB usable.

2) Both of those are overkill for 1080p. Buy a 770, or if you know for sure you're going to get a 1440p monitor, get the 780. Crossfire has been improved, but not fixed, with the 13.8 drivers, and while the 7990 is a decent deal, it's also going to produce a heck of a lot of heat.

3) Which brings me to my last point. What are you going to do about heat? That chip you have there is going to produce a LOT of it, enough that unless you have very good heat dissipation, you'd have a faster setup with an overclocked i5-3570k, because it produces so much less heat. If you also throw a 7990 in there, well... you better have a case made out of holes.
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August 10, 2013 4:23:01 PM

DarkSable said:
Several things:

1) You do NOT have 6GB of VRAM with a 7990. It's in crossfire, remember? That means that the VRAM doesn't stack - it has two chips with 3GB of VRAM each, which means you only have 3GB usable.

2) Both of those are overkill for 1080p. Buy a 770, or if you know for sure you're going to get a 1440p monitor, get the 780. Crossfire has been improved, but not fixed, with the 13.8 drivers, and while the 7990 is a decent deal, it's also going to produce a heck of a lot of heat.

3) Which brings me to my last point. What are you going to do about heat? That chip you have there is going to produce a LOT of it, enough that unless you have very good heat dissipation, you'd have a faster setup with an overclocked i5-3570k, because it produces so much less heat. If you also throw a 7990 in there, well... you better have a case made out of holes.


I run with the 780 at 1080p and i dont think its overkill and when games start to get more demanding the 3GB of ram and the extra "overkill" gpu power will help out..I dont regret getting the gpu at all

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August 10, 2013 4:38:15 PM

That's fine. I have a 670, and I happily max out most games. Yes, in the future, having a more powerful card will help... and your point is? 'future proofing' is a myth, as it's a better option to buy a sufficient card now and to sell it and get another in the future than to spend the same money getting a card now that's more powerful than you need, but will look puny after several years.

The best move is to get the card that fits your needs and budget.
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August 10, 2013 4:41:31 PM

DarkSable said:
That's fine. I have a 670, and I happily max out most games. Yes, in the future, having a more powerful card will help... and your point is? 'future proofing' is a myth, as it's a better option to buy a sufficient card now and to sell it and get another in the future than to spend the same money getting a card now that's more powerful than you need, but will look puny after several years.

The best move is to get the card that fits your needs and budget.


That that would lead upgrading more then he has to. Getting a 780 then sli later would be a better option then to upgrade a 770 then selling it for lower price just to re-upgrade dont make sense. An ACX 780 seems like the best way to go and i own one my self and honestly i could sli next year and be contempt with my purchase with knowing the price on the 780 will drop a little. Thats just me though

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August 10, 2013 5:08:42 PM

So I should just get a 780 and SLI in the future? I heard SLI causes problems with some new release, would a single GTX 780 run Crysis 3 at 60+ fps Maxed with AA off at 1920x1080, same with Metro? If so, I'll just stick with the SuperClocked GTX 780 I planned to get :D 
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August 10, 2013 5:13:12 PM

HowBoutDemPats12 said:
So I should just get a 780 and SLI in the future? I heard SLI causes problems with some new release, would a single GTX 780 run Crysis 3 at 60+ fps Maxed with AA off at 1920x1080, same with Metro? If so, I'll just stick with the SuperClocked GTX 780 I planned to get :D 


Bigmack70 could answer this better then i could but in sli it would be the way to go with the 780s
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August 10, 2013 5:26:18 PM

BigMack70 said:
Yes, a single 780 will get you about 60fps at 1080p without AA, and same with Metro etc. At 1440p, Crysis 3 requires two 780s to max it (even without AA) at 60fps.


Sounds good, thanks for all your help everyone :D 
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