Max Temp?

[chungenhung]

Radeon gpus in general run hot..
You should worry if you break the 85~90C barrier.

I feel safe below 80. But some ppl do run their cards hotter.

yeah, i am part of that "some ppl".
Used to run my nVidia's at 100C+

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[Fiyasko]

how did you set the 6990 to 600 memory?

MISafter burner.... make sure you've "enabled unofficial overclocking"
Hell i could drop it to 300 right now if i wanted, but it crashes when mining

[CanaryInTheMine]

how did you set the 6990 to 600 memory?

MISafter burner.... make sure you've "enabled unofficial overclocking"
Hell i could drop it to 300 right now if i wanted, but it crashes when mining

Hmmm... I'm very puzzled... there have been posts after posts about the limitation of underclocking 6990s
i don't know how you're able to do this.  Which 6990s do you have? maybe yours are some particular brand that allows this...
basically i can set the values using MSI AB or whatever other program, but if you actually lookup the memory speed with say GPU-Z it won't run at the specified memory setting.  On 6990s, for pretty much most people here, you can only set the memory clock by 125 less than the core clock. ex: 930/805, 940/815 etc... etc...

If I try something like 930/600 with MSI, the core speed will be set at 930 but the memory clock will be at the default setting(1250 i think?) according to GPU-Z...

So, i'm very curious whether you could verify what the actual memory speed is reported at when you down-clock it.

[Fiyasko]

I'll go take a screeny in the other room on the mininer istelf, I assume that it's actually dropping the mem clock because when i drop it i loose 12°
I have an MSI 6990

http://imageshack.us/f/12/unlednfw.png/
As you can see here, i can put the mem clock Much lower, Or the core Much higher

[CanaryInTheMine]

I'll go take a screeny in the other room on the mininer istelf, I assume that it's actually dropping the mem clock because when i drop it i loose 12°
I have an MSI 6990

http://imageshack.us/f/12/unlednfw.png/
As you can see here, i can put the mem clock Much lower, Or the core Much higher

Maybe MSI doesn't have this restriction.... I'll have to hunt one down.  Too bad I've sold 5 of them already without trying them... (to pay for 2 sapphire 6990s I kept for myself LOL)

Appreciate you posting this!

[Fiyasko]

I'll go take a screeny in the other room on the mininer istelf, I assume that it's actually dropping the mem clock because when i drop it i loose 12°
I have an MSI 6990

http://imageshack.us/f/12/unlednfw.png/
As you can see here, i can put the mem clock Much lower, Or the core Much higher

Maybe MSI doesn't have this restriction.... I'll have to hunt one down.  Too bad I've sold 5 of them already without trying them... (to pay for 2 sapphire 6990s I kept for myself LOL)

Appreciate you posting this!

I am more than certain that it's not my specific cards, Have you gone into MSIa and under the EULA and typed:
[ATIADLHAL]
EnableUnofficialOverclocking   = 1
UnofficialOverclockingEULA   = I confirm that I am aware of unofficial overclocking limitations and fully understand that MSI will not provide me any support on it
UnofficialOverclockingMode   = 2
AccessibilityCheckingPeriod   = 0

Once you do this you can set whatever clocks you want on whatever card you want, NOTE: MISa becomes very "tweaky" after you've done this, (EG: drag mem to lowest, Hit apply, Close misa, Reopen it, And it can go lower)

[CanaryInTheMine]

I'll go take a screeny in the other room on the mininer istelf, I assume that it's actually dropping the mem clock because when i drop it i loose 12°
I have an MSI 6990

http://imageshack.us/f/12/unlednfw.png/
As you can see here, i can put the mem clock Much lower, Or the core Much higher

Maybe MSI doesn't have this restriction.... I'll have to hunt one down.  Too bad I've sold 5 of them already without trying them... (to pay for 2 sapphire 6990s I kept for myself LOL)

Appreciate you posting this!

I am more than certain that it's not my specific cards, Have you gone into MSIa and under the EULA and typed:
[ATIADLHAL]
EnableUnofficialOverclocking   = 1
UnofficialOverclockingEULA   = I confirm that I am aware of unofficial overclocking limitations and fully understand that MSI will not provide me any support on it
UnofficialOverclockingMode   = 2
AccessibilityCheckingPeriod   = 0

Once you do this you can set whatever clocks you want on whatever card you want, NOTE: MISa becomes very "tweaky" after you've done this, (EG: drag mem to lowest, Hit apply, Close misa, Reopen it, And it can go lower)

Yes, I surely do know how to use and setup/configure MSI AB for OC'ing. was one of the first things I learned when I started with bitcoins...

still, if you look through forums regarding 6990s you will see that people are unable to underclock memmory outside the parameters I mentioned.

I will hunt down an MSI board and see if it behaves differently.  Will post back here, but it may really take a while...

[Fiyasko]

I'll go take a screeny in the other room on the mininer istelf, I assume that it's actually dropping the mem clock because when i drop it i loose 12°
I have an MSI 6990

http://imageshack.us/f/12/unlednfw.png/
As you can see here, i can put the mem clock Much lower, Or the core Much higher

Maybe MSI doesn't have this restriction.... I'll have to hunt one down.  Too bad I've sold 5 of them already without trying them... (to pay for 2 sapphire 6990s I kept for myself LOL)

Appreciate you posting this!

I am more than certain that it's not my specific cards, Have you gone into MSIa and under the EULA and typed:
[ATIADLHAL]
EnableUnofficialOverclocking   = 1
UnofficialOverclockingEULA   = I confirm that I am aware of unofficial overclocking limitations and fully understand that MSI will not provide me any support on it
UnofficialOverclockingMode   = 2
AccessibilityCheckingPeriod   = 0

Once you do this you can set whatever clocks you want on whatever card you want, NOTE: MISa becomes very "tweaky" after you've done this, (EG: drag mem to lowest, Hit apply, Close misa, Reopen it, And it can go lower)

Yes, I surely do know how to use and setup/configure MSI AB for OC'ing. was one of the first things I learned when I started with bitcoins...

still, if you look through forums regarding 6990s you will see that people are unable to underclock memmory outside the parameters I mentioned.

I will hunt down an MSI board and see if it behaves differently.  Will post back here, but it may really take a while...

Huh., Funny.
http://www.newegg.ca/Product/Product.aspx?Item=N82E16814127574
Usin this one