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Single 6990 vs 6970 crossfire - Page 2

post #11 of 24
i would get the 6990 just because its a sick card but that's just me.
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Tha Beast!
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post #12 of 24
I was thinking of going CF 6970 but now since I have only 2 PCIe slots I am going to get a 6990 to have a trifire 6970 in effect. that should be enough horsepower in eyefinity to run any game...I hope.
Quote:
Originally Posted by compudaze;13395329 
Here are the official clocks:
  • 6950 has 1408 unified shaders and is clocked at 800MHz core and 1250MHz memory
  • 6990 [per core] has 1536 unified shaders and is clocked at 830MHz core and 1250MHz memory
  • 6990 OC (flip the bios switch) [per core] has 1536 unified shaders and is clocked at 880MHz core and 1250MHz memory
  • 6970 has 1536 unified shaders and is clocked at 880MHz core and 1375MHz memory

Overclocked 6950's would be the best value by far, unlocked or not. Even if they are not overclocked they are still good. 6970 CFX is faster than the 6990.

If I was to rate only the 6950CFX/6970CFX/6990 on a scale of 1-10, it would be:
  • 6970 CFX: 10
  • 6990: 8
  • 6950 CFX: 7

Any Crossfire issue's you may run into with 6950CFX/6970CFX, you'll also run into with the 6990.
post #13 of 24
Quote:
Originally Posted by Topgearfan;13395411 
I was thinking of going CF 6970 but now since I have only 2 PCIe slots I am going to get a 6990 to have a trifire 6970 in effect. that should be enough horsepower in eyefinity to run any game...I hope.

HAH! I just edited my post to mention TriFire wink.gif
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post #14 of 24
Ya, I think it is the only option for me at this point. Also over the next 2 years the games that will be released will demand so much from GPU's and CPu's that it is going to almost be a must to either have 2 of the most powerful cards or 3 slightly less powerful cards. I have a strong feeling that Battlefield 3 will be really demanding, and then whatever the next crysis game will be(unless they decide to again design it mostly for consoles).
Quote:
Originally Posted by compudaze;13395418 
HAH! I just edited my post to mention TriFire wink.gif
post #15 of 24
CF HD6970 > HD6990.

HD6970 should also run cooler and slightly quieter. But of course CF is going to take 4 slot of your motherboard. In some games CF doesn't scale good and thus HD6990 would outperform them. And last but not least, HD6990 is the most powerful card on the planet.
post #16 of 24
Quote:
Originally Posted by Topgearfan;13395303 
My 6970 has the bios switch but what is the advantage of it besides just flashing to other if one gets corrupted?

For me, I need more than 950/1450 settings for my 6970, so it needs to be flashed so I can match my 6990's 1200/1500 settings. If you screw up the flash, you can recover it with the switch. Also, the first version cards are AMD reference design. With the new version 2 cards, you have no clue if its better or worse. There's already a thread about the XFX 6970 V2 card now.
     
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Intel I7 860  Asus P7P55D-E Pro MSI ATI 6990 8gb G.Skill 1600 DDR3 (4x2Gb) 
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G. Skill 1600 DDR3 OCZ Agility 2 120Gb  Seagate SATA Barracuda 160GB TSH663B DVD burner 
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post #17 of 24
See that is what I am wondering. My 6970 is supposed to be a ref card and I gave msi my s/n and they it was, but they couldnt tell me if it is the old version or the new version. I am not sure of an easy way to tell without taking the fan cover off then that means I have to mess with thermal paste which is a bit of an issue since i have never done that before.
Quote:
Originally Posted by ezveedub;13395580 
For me, I need more than 950/1450 settings for my 6970, so it needs to be flashed so I can match my 6990's 1200/1500 settings. If you screw up the flash, you can recover it with the switch. Also, the first version cards are AMD reference design. With the new version 2 cards, you have no clue if its better or worse. There's already a thread about the XFX 6970 V2 card now.
post #18 of 24
Quote:
Originally Posted by Topgearfan;13395609 
See that is what I am wondering. My 6970 is supposed to be a ref card and I gave msi my s/n and they it was, but they couldnt tell me if it is the old version or the new version. I am not sure of an easy way to tell without taking the fan cover off then that means I have to mess with thermal paste which is a bit of an issue since i have never done that before.

What MSI part number is it? I have heard mixed info on the MSI card. Does your video card have the bios switch and black back plate?
     
CPUMotherboardGraphicsRAM
Intel I7 860  Asus P7P55D-E Pro MSI ATI 6990 8gb G.Skill 1600 DDR3 (4x2Gb) 
RAMHard DriveHard DriveOptical Drive
G. Skill 1600 DDR3 OCZ Agility 2 120Gb  Seagate SATA Barracuda 160GB TSH663B DVD burner 
CoolingCoolingCoolingCooling
EK Supreme HF XSPC RC360 XSPC DDC Reservoir EK-FC6990 - EN (Nickel) 
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Windows 10 64bit Pro Gateway FHX2300 Microsoft Wireless Multimedia V2 PC Power & Cooling Silencer 750 Quad 
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CPUMotherboardGraphicsRAM
Intel I7 860  Asus P7P55D-E Pro MSI ATI 6990 8gb G.Skill 1600 DDR3 (4x2Gb) 
RAMHard DriveHard DriveOptical Drive
G. Skill 1600 DDR3 OCZ Agility 2 120Gb  Seagate SATA Barracuda 160GB TSH663B DVD burner 
CoolingCoolingCoolingCooling
EK Supreme HF XSPC RC360 XSPC DDC Reservoir EK-FC6990 - EN (Nickel) 
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Windows 10 64bit Pro Gateway FHX2300 Microsoft Wireless Multimedia V2 PC Power & Cooling Silencer 750 Quad 
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post #19 of 24
For triple monitors, 6990 is better. It comes with 4 mini-DP connectors. When in Eyefinity, it is best to keep all the display outputs the same for optimal syncing between all monitors. Make sure your monitors are capable of DisplayPort.
post #20 of 24
It has the Bios switch and black back plate.
Quote:
Originally Posted by ezveedub;13395645 
What MSI part number is it? I have heard mixed info on the MSI card. Does your video card have the bios switch and black back plate?
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