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2 x 7950's Rival A 7990?
- Thread starter lettuce
- Start date
looking at video cards benchmarks website ie passmark software it gets per one gpu;
Radeon HD 7950 4,613
and GeForce GTX Titan 8,402
so if that web site is correct then two off them would be ok.
Kenneth.
Radeon HD 7950 4,613
and GeForce GTX Titan 8,402
so if that web site is correct then two off them would be ok.
Kenneth.
You will get about the same performance for half of the price, the only reason to get a 7990 is if you are going to use 2 to quad-fire or if you don't have space for 2 cards.
I have 2x 7950 and I'm happy with them, I wish I could use one more on my computer.
Caporegime
- Joined
- 18 Oct 2002
- Posts
- 33,188
Assuming a game/driver set with no massive problems, you'd be hard pressed to notice much of a difference between any 670/680/7950/7970 sli/xfire setup or the 7990/690. If in a game you're talking about 10% difference covering them all, and that 10% is 120-132fps, its not very noticeable.
Because of cpu limits and higher framerates you're likely to be more frequently limited by maximums. On a single card you might have a 670 giving you a 60fps max, and a 7970 giving you 75fps, but in xfire/sli, its 115fps vs 120fps, because while the 7970 is faster, at that fps cpu is becoming more of a factor and lowering the difference.
Meh, in most situations 10% more performance just isn't very noticeable most of the time.
The 4870x2 was an AWESOME card, because 4870 1gb cards weren't even out yet, and the 512gb cards were something like £180, a 4870x2 had 1gb per core and was only £330, it was cheaper with more memory. It was actually faster, better at high res and cheaper than buying two separate cards. Since then, dual gpu cards have costed more, been more clock speed limited(because of power limitations), and been out seriously late, well after you can just buy two single cards.
The 4870x2 was out weeks after the 4870, and before the higher memory version, a 7990, is a joke, you could have had 2x7970 what 8 months before the first unoffical 7990's, well over a year before the official 7990's, cheaper, and faster.
Old dual gpu cards had several reasons to buy them and the only downside was marginally reduced performance vs 2 separate cards with same memory amount, since then, there is no upside at all to dual gpu cards. Higher failure rate, higher cost, louder, bigger/longer/fit in less cases, slower, and massive long wait to get a level of performance you can achieve for a lower cost 6months + earlier, I would also say single gpu cards have a huge interest in second hand market after new gen cards are out, very few people want to pay heavily for a now matched card that uses twice the power.
Because of cpu limits and higher framerates you're likely to be more frequently limited by maximums. On a single card you might have a 670 giving you a 60fps max, and a 7970 giving you 75fps, but in xfire/sli, its 115fps vs 120fps, because while the 7970 is faster, at that fps cpu is becoming more of a factor and lowering the difference.
Meh, in most situations 10% more performance just isn't very noticeable most of the time.
The 4870x2 was an AWESOME card, because 4870 1gb cards weren't even out yet, and the 512gb cards were something like £180, a 4870x2 had 1gb per core and was only £330, it was cheaper with more memory. It was actually faster, better at high res and cheaper than buying two separate cards. Since then, dual gpu cards have costed more, been more clock speed limited(because of power limitations), and been out seriously late, well after you can just buy two single cards.
The 4870x2 was out weeks after the 4870, and before the higher memory version, a 7990, is a joke, you could have had 2x7970 what 8 months before the first unoffical 7990's, well over a year before the official 7990's, cheaper, and faster.
Old dual gpu cards had several reasons to buy them and the only downside was marginally reduced performance vs 2 separate cards with same memory amount, since then, there is no upside at all to dual gpu cards. Higher failure rate, higher cost, louder, bigger/longer/fit in less cases, slower, and massive long wait to get a level of performance you can achieve for a lower cost 6months + earlier, I would also say single gpu cards have a huge interest in second hand market after new gen cards are out, very few people want to pay heavily for a now matched card that uses twice the power.
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I am running two 7970's for battlefield 3 and a benq gaming monitor and do not notice any off the micro stutter although my cpu is at 4.6 ghz that could possible have elevated any problems off microstutter if there was any going to show up.
Kenneth.
Kenneth.
Well it will be used for my new haswell build, maybe these new haswell mobos will eliminate the problem altogether. Is it something AMD can fix via software?
Regarding CrossFire, does the mobo i select have to be x16 on both PCI-E slots, as i know a lot of mobo are x16 on slot one and then the 2nd PCI_E slot is x4 or x8???
Regarding CrossFire, does the mobo i select have to be x16 on both PCI-E slots, as i know a lot of mobo are x16 on slot one and then the 2nd PCI_E slot is x4 or x8???
Soldato
- Joined
- 2 Jan 2012
- Posts
- 12,426
- Location
- UK.
Just gone for 3 7950's myself, works out about £170 per card if you get rid of the games. For some reason there is less stutter with 3 cards than 2, and performance will destroy 7990 etc..
Maybe go for 3
Maybe go for 3
It exists on all multi GPU solutions - AMD and nVidia. I have crossfire 7950s and I don't notice it so it isn't a problem. Some don't get on with it. The only way to tell is to try it.