No, you got to be careful. heat can be an issue resulting in less overclock, power delivery system (i.e 2 x 8pin vs 6+8 & 6+8 = less wattage to source)...more expensive than two 7970.Quote:
Originally Posted by Ace123
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No, you got to be careful. heat can be an issue resulting in less overclock, power delivery system (i.e 2 x 8pin vs 6+8 & 6+8 = less wattage to source)...more expensive than two 7970.Quote:
Originally Posted by Ace123
Yup, that's why I gave up on waiting and it's price...because I'm gaming at 1080p only (120hz with back-light strobing to eliminate motion blur).
CF can be disabled on Dual AMD cards.Quote:
Originally Posted by DefStar
lolQuote:
Originally Posted by solofly
Edit...I was misinformed.Quote:
Originally Posted by Final8ty
umm.... I have disabled crossfire on my 7990... maybe because I have a non reference powercolor?Quote:
Originally Posted by DefStar
You are wrong :DQuote:
Originally Posted by DefStar
i have AMD HD 7990 (reference) and i can disable crossfire in any game i want:up:
Attachment 131493
Wow! I should have just started a new thread. I searched google "Disable crossfire 7990" and all I got was you can't disable it...pre-13.8 Cat.. So, have you guys been able to do this since before 13.8 drivers? Or maybe the search results google gave me where of complete noobs who can't figure out how to disable crossfire. Oh well, rather have two 7970s anyway...Quote:
Originally Posted by Tha Last Meal
So you have to have a game profile to disable crossfire on 7990 then?
yeah :DQuote:
Originally Posted by DefStar
You know there are some people stupid and they want to talk:eek:, even though they are stupid:D
yes :up:Quote:
have you guys been able to do this since before 13.8 drivers?
Definitely big nooooobs :shakes:Quote:
Or maybe the search results google gave me where of complete noobs who can't figure out how to disable crossfire.
You can create a profile easily for any games and do what you want, including disable crossfire :up:Quote:
So you have to have a game profile to disable crossfire on 7990 then?
I updated my posts so some poor guy doesn't come across it and get fooled like me. I would have got the 7990 though, because then I would only need one water-block. Yeah, I was totally thinking that it is still in theory two video cards...but maybe. Well, now I know...thank you guys. I just got my two 7970s from newegg yesterday, I could return them...but then I would end up doing tri-fire which is just way overkill for my 1080p monitor, and hence $ wasted...i need to update from my 89 ford ranger :), but it just keeps running.
H? stop fight guys... lets be in peace.... lol
No fight, just updating my memory bank.Quote:
Originally Posted by Lanek
No problem my friend Ask When what you want :)Quote:
Originally Posted by DefStar
I advise you to buy a 7990
HD 7990 = PCI Express 1 slot
HD 7970 CF = PCI Express 2 slot + more noise + more heat
In the end, HD 7990 will give you the same performance of HD 7970 CF:)
If you believe that this rational debate......is a fight :eek: you need to drink a cup of coffee:DQuote:
Originally Posted by Lanek
Only one ?? i need hundred of liters of cofee after this week.. ( i work too much , i should do a break )Quote:
Originally Posted by Tha Last Meal
lol :DQuote:
Originally Posted by Lanek
i work too much + I think the real reason is the daily thinking about one thing only..............R9 290X :D:p:
you and i and all work, and work pressure is unbearable but nevertheless must take a rest
You need to take a big break :)
Heh, I drink so much coffee...that I can't tell if its doing anything. I can go right to sleep after drinking 4 cups (coffee pot measurement) of coffee.
Ok .. Coffee is the peace maker of this world
Does anyone know when the reviews will hit? I know one reviewer and he doesn't have a card yet. I was told not to expect the reviews before the week after next week. Apparently the NDA for the 15th doesn't concern the 290(X).
Quadfire 6990Quote:
have you guys been able to do this since before 13.8 drivers?
http://i.imgur.com/ULTeZu2.jpg
PlayStation 4 & AMD Radeon R9 290X GPU share the same 8 ACE ( Asynchronous Compute Engines )
:confused: hmmmmmQuote:
Newly leaked slides from AMD's new Radeon R9 290X Hawaii GPU reveals that the Volcanic Islands GPU will also feature 8 Asynchronous Compute Engines much like the Liverpool GPU inside of Sony's new PS4.
Each of the 8 ACE's can manage up to 8 compute queues for a total of 64 compute commands, in comparison the HD 7970 only has 2 ACE's that could only queue 2 compute commands for a total of 4 & the Xbox One only has 2 ACE's but they also manage up to 8 compute queues for a total of 16 compute queues.
Could this mean that the PS4's GPU is also apart of AMD's Volcanic Islands family?
^^ I was coming to that as well. I'm wondering, if ps4 apu is gcn2.0 based, so is it also pixel/triangle cruncher like these new 290x cards? Even though the peak performance in terms of tflops isn't that great, but if it has 90% pixel triangle power than gcn1.0, it wouldn't be suprise why it's so muchs faster than people think.
my opinion is impossible to be like 290x When it comes to specificationsQuote:
I'm wondering, if ps4 apu is gcn2.0 based, so is it also pixel/triangle cruncher like these new 290x cards?
certainly ps4 apu will be much less specifications than 290x
This is what I'm sure of it
PS4 has 1152 sp with 8 ACE, 2 geometry engines, 2 rasterizers, 256 bit memory at 5.5Ghz (176 Gb/s), 8 RBE (render back end) and 32 ROPs. actually PS4 has 1280 sp (same as HD 7870) but two are disabled for yield reasons. R9 290X has 2816 sp , 8 ACE, 4 geometry engines, 4 rasterizers, 512 bit memory at 5 Ghz (320 Gb/s), 16 RBE (render back end) and 64 ROPs. there is no commonality except for the 8 ACE. AMD has used the work they did for 8 ACE for PS4 on the R9 290 cards.Quote:
Originally Posted by stuffme
R9 290X is a beast of a GPU. This chip doubles HD 7870 aka Pitcairn in every aspect and in sp count goes to 2.2x. I wouldn't be surprised to see R9 290X double the perf of HD 7870 as HD 7870 gets close to 1.9x the perf of HD 7770 for a similar doubling on every aspect. that should put its perf around 10% faster than Titan. since Titan (875 mhz)is clocked lower than R9 290X (1 ghz) we can expect Titan would on average be the same perf/clock compared to R9 290X.
add Mantle upon that and the beast might be beastier :)Quote:
Originally Posted by raghu78