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AMD Radeon 6990 Club - Page 277

post #2761 of 4103
Hey guys, i recently noticed on gpuz that my 6990 was idling at 50c, and also running at 500 mhz at idle.. If i Click and select the other 6990 in gpuz it shows it idling at 250mhz and at 37c... Im assuming it is showing one gpu and then then other. So does anyone know why my 1st gpu is at 500 mhz at idle..... I am running eyefinity atm, might that have anything to do with it?

Hopefully what ive wrote makes sense to you guys and someone can shed some light! (I can upload some pics to make it easier to understand as well if you request)
    
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post #2762 of 4103
Quote:
Originally Posted by MadHacker View Post
Idle
Attachment 220012
Load after a minute
Attachment 220013
Load after 10 minutes
Attachment 220014
Idle CPU temp 58-63c? GPU1 46-47.5c & GPU2 46-48c? On water same loop?

GPU-Z main tab the memory 901 Mhz but under Sensor tab it is 1250 Mhz?

Maybe a few words could explain the screenshots better about the CPU and GPU temps........... Other than to say Koolance VID-AR699 is not as good as other blocks to keep the Vreg temps in check, if screenshots posted above was under watercooling
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post #2763 of 4103
Quote:
Originally Posted by Aaranu View Post
Hey guys, i recently noticed on gpuz that my 6990 was idling at 50c, and also running at 500 mhz at idle.. If i Click and select the other 6990 in gpuz it shows it idling at 250mhz and at 37c... Im assuming it is showing one gpu and then then other. So does anyone know why my 1st gpu is at 500 mhz at idle..... I am running eyefinity atm, might that have anything to do with it?

Hopefully what ive wrote makes sense to you guys and someone can shed some light! (I can upload some pics to make it easier to understand as well if you request)
Eyefinity or more than 1 screen, Core and Memory clocks are higher to maintain stability. Easy test, use one screen it will lower the clock hence lower temp.
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post #2764 of 4103
Quote:
Originally Posted by Ken1649 View Post
Eyefinity or more than 1 screen, Core and Memory clocks are higher to maintain stability. Easy test, use one screen it will lower the clock hence lower temp.
Cheers mate! i will try that
    
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post #2765 of 4103
Quote:
Originally Posted by HiLuckyB View Post
Do you really need 1.2v for 900/1375? It seems most 6990's can do at least 925/1350 1.175v. I know my 6990 can do 960/1375 @1.175v.
My problem is definitely the psu i can do 1000/1375 1.25v when only running a single card using furmark 1.8.5 the power draw with both cards OC is too much for Hx1000
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post #2766 of 4103
Quote:
Originally Posted by Ken1649 View Post
Idle CPU temp 58-63c? GPU1 46-47.5c & GPU2 46-48c? On water same loop?

GPU-Z main tab the memory 901 Mhz but under Sensor tab it is 1250 Mhz?

Maybe a few words could explain the screenshots better about the CPU and GPU temps........... Other than to say Koolance VID-AR699 is not as good as other blocks to keep the Vreg temps in check, if screenshots posted above was under watercooling
I Edit/Added some notes...
problem is is i get this even on air.
and system freezes
post #2767 of 4103
is there a way to set it so when im trying to find my 6990 max oc, that it doesnt hard lock and i have to hard reset? IDK why its hard locking, i set it to 1000/1500 at 1.2v and no go. It is watercooled, temps are fine. is 1.2 to much, could TOO MUCH VOLTAGE CAUSE LOCK UPS?
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post #2768 of 4103
Quote:
Originally Posted by thrgk View Post
is there a way to set it so when im trying to find my 6990 max oc, that it doesnt hard lock and i have to hard reset? IDK why its hard locking, i set it to 1000/1500 at 1.2v and no go. It is watercooled, temps are fine. is 1.2 to much, could TOO MUCH VOLTAGE CAUSE LOCK UPS?
My 6990 needs 1.205v to get 1000/1375. You might want to try dropping the memory down some. The memory on my 6990 doesn't like to go over 1475. I always overclock the core to the max it can do at the set voltege, Then slowly up the memory untill it's not stable anymore
post #2769 of 4103
Quote:
Originally Posted by MadHacker View Post
Idle
Attachment 220012
Load after a minute
Attachment 220013
Load after 10 minutes
Attachment 220014

Watercooled using koolance waterblock.
on same loop as CPU , MB & Ram block
Quote:
Originally Posted by MadHacker View Post
I Edit/Added some notes...
problem is is i get this even on air.
and system freezes
You are the first one to confirm even on stock air cooler the Vreg temp is also going wild out of curb, running Mining I supposed?

By only looking at your posted temps on watercooled, something doesn't seem right about the temperatures but it is hard to say other than wild guesses without knowing what you are using such as rads, pumps, fans configuration, tube routing, ambient etc.

The way I look at the waterblock, I would just go with some common sense here and not going to brand this is better than the others.
The Vreg temp is the issue, look at the Koolance VID-AR699 picture where Vregs contact area with the waterblock thru thermal pad. Then compare the surface of that area with waterblock picture of other brands especially the Vreg area. If you think other brand surface contact area will provide better thermal dissipation or it is made with metallurgy for some high tech space shuttle, then go for that specific brands.

If you think all brands more or less are equally same, flow restriction, micro fins inside, material, could take a clooser look at what you are using now and why the Vreg temps are not in check. I lost count how many posters on this thread using VID-AR699s reported having this problem running Bit Coin. By this, I am not so confident to believe there is a design flaw as some might have claimed.

Maybe some will get a product that went wrong somewhere during the process. I know I do have one that the 4 nut posts couldn't get thru the PCB for the X bracket to screw on. It is out of alignment by 0.5mm (visual estimation) but this is an easy fix. I got one extra block as spare just in case something like this might happen and leaving me no choice but to RMA.

I am not an expert here but I always try to find the answer simplest way possible and to use some common sense without getting wild hare going cracking my head.
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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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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post #2770 of 4103
Quote:
Originally Posted by Ken1649 View Post

The way I look at the waterblock, I would just go with some common sense here and not going to brand this is better than the others.
Worse than others you mean.
Quote:
Originally Posted by Ken1649 View Post
I lost count how many posters on this thread using VID-AR699s reported having this problem running Bit Coin. By this, I am not so confident to believe there is a design flaw as some might have claimed.
Unless someone can show me that the VRegs on the cards using this block don't overheat while Bitmining, I consider the block defective. Products have an implied standard of merchantability for reasonably foreseeable uses. Bitmining is a reasonably foreseeable use so when the cards fail on me when I mine I consider the block defective.
Edited by catcherintherye - 7/17/11 at 12:15am
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