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AMD Radeon 6990 Club - Page 313

post #3121 of 4103
Quote:
Originally Posted by ezveedub View Post
ATIMAN uninstaller is done from an admin account, not safe mode.
LOL

I tried it on a PC with no ATI driver related and got the "Driver Stop Working" after using Atiman Uninstaller 5.2.4

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post #3122 of 4103
Quote:
Originally Posted by Bima Sylirian View Post
Hi everyone. I just upgraded my driver to Catalyst 11.8 and got annoying issue.
CrossFireX is not working anymore.
I already use Driver Sweeper after uninstalling older driver.
Does anyone here experienced similar problem?
I had this same issue. I uninstalled the driver, booted to safe mode, restarted and installed the drivers and that worked. However, I have a different issue. I am running two HD6990's and during 3DMark11 my GPU's hit about 26% usage and that's it. Needless to say my score sucks. I disabled ULPS via the registry and the cards are showing 890Mhz, but they are not running at full capacity. Any ideas?

Also, with a single HD6990 I scored around 34k at stock, but with two at stock I only hit 37K. I think it's related to the above issue. I am using a Enermax Evolution 950watt PSU, and my watt meter only tops out at around 750watts, so I do not think it's the PSU. Getting kinda frustrated that I am not using the full potential of these cards. Any ideas on what to check?
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post #3123 of 4103
Quote:
Originally Posted by utnorris View Post
I am using a Enermax Evolution 950watt PSU, and my watt meter only tops out at around 750watts, so I do not think it's the PSU.
I would get a bigger PSU. I have a 1000w for my 6990+6970 and I wouldn't try to run 2 6990's on a 1000w for long. 6990's are very power hungry, especially if you start to overclocking them.

That's just my
post #3124 of 4103
With two 6990s, use a 1200 watt PSU like a AX1200.
     
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post #3125 of 4103
Norris, yer running 2x 6990s on 950w? That's insane. Btw, you can't trust wattage meters. A single 6990 can pull almost 500w by itself man...
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post #3126 of 4103
2 6990s, 1320 from the wall, courtesy of ezeevdub. 1000w psu ain't gonna cut it.

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post #3127 of 4103
Ok, so you guys are pretty sure it's because they are under powered. Can I use my AX750 to power the second card until I get a new PSU, or would guys recommend against that?
Thanks
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post #3128 of 4103
That would be better to add 750w to share the load. Make sure the second PSU to have pre-load of other voltages other than the +12v.
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2x 6990 + 580 16GB 2133 MHz 24GB 2000 MHz 120GB x 2 RAID0 
Hard DriveHard DriveCoolingCooling
120GB x 4 RAID0 Raptor 300GB x 2 RAID0 CPU-370 CPU-370 
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ケンジ
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GraphicsRAMRAMHard Drive
2x 6990 + 580 16GB 2133 MHz 24GB 2000 MHz 120GB x 2 RAID0 
Hard DriveHard DriveCoolingCooling
120GB x 4 RAID0 Raptor 300GB x 2 RAID0 CPU-370 CPU-370 
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post #3129 of 4103
Quote:
Originally Posted by Ken1649 View Post
That would be better to add 750w to share the load. Make sure the second PSU to have pre-load of other voltages other than the +12v.
What do you mean? I was just going to jump it and connect the PCIe connectors to the second card, do I need to do something differently?
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New Custom Case
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LG Bluray Burner Swiftech HD Koolance MVR-100 Koolance CHC-125 
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post #3130 of 4103
Quote:
Originally Posted by utnorris View Post
What do you mean? I was just going to jump it and connect the PCIe connectors to the second card, do I need to do something differently?
This is what I would do when running 2 PSUs in tandem, share some of other voltages to HDDs, SDDs, Fans, Pumps, etc among 2 PSUs to have equal pre-load before going to jump start it. Some PSUs might not work correctly with just +12V load alone.
ケンジ
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CPUCPUMotherboardGraphics
i7-3960X i7-980X GA-X79-UD7 / GA-X58A-UD9 7970 + 465 
GraphicsRAMRAMHard Drive
2x 6990 + 580 16GB 2133 MHz 24GB 2000 MHz 120GB x 2 RAID0 
Hard DriveHard DriveCoolingCooling
120GB x 4 RAID0 Raptor 300GB x 2 RAID0 CPU-370 CPU-370 
CoolingCoolingOSPower
VID-AR699 EK FB X58A-UD9 Win 7 Ultimate x64 1500W / 1250W+1200W 
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ケンジ
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i7-3960X i7-980X GA-X79-UD7 / GA-X58A-UD9 7970 + 465 
GraphicsRAMRAMHard Drive
2x 6990 + 580 16GB 2133 MHz 24GB 2000 MHz 120GB x 2 RAID0 
Hard DriveHard DriveCoolingCooling
120GB x 4 RAID0 Raptor 300GB x 2 RAID0 CPU-370 CPU-370 
CoolingCoolingOSPower
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