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Author Topic: Was lucky enough to acquire a AMD 7990 - only getting 200khash/s??? LITECOIN  (Read 2464 times)
Sancho (OP)
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January 11, 2014, 04:49:56 AM
 #41



Thank you so much - the voltage really was the key. Getting 1350 now with similar settings. Smiley

Going to download GPUz now and see what the VRM sensors look like. Thanks!

No problem dude.  Your VRM temp is probably fine around 87C.  What kind of case do you have also?  I really had to get some serious airflow through the case to keep things in order.  I've got 6 120mm fans feeding air through, though I've resorted to taking the side of the case off and putting a room fan blowing into the case, the way the cooling works on that card it superheats the interior of the case so if you don't vent it you will have some serious problems! 

Good luck!

With what I have it at now, the VRM temp is sitting around 89/91.5.

My tower = Thermaltake Chaser MK-1 VN300M1W2N
I have had both sides off and probably will keep them off now. That's funny you mention the room fan, I was just talking about that possibility with my girlfriend. Does it really work well?
Spencer_tracy
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January 11, 2014, 05:26:54 AM
 #42

Thank you so much
Kluge
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January 11, 2014, 05:47:54 AM
 #43



Thank you so much - the voltage really was the key. Getting 1350 now with similar settings. Smiley

Going to download GPUz now and see what the VRM sensors look like. Thanks!

No problem dude.  Your VRM temp is probably fine around 87C.  What kind of case do you have also?  I really had to get some serious airflow through the case to keep things in order.  I've got 6 120mm fans feeding air through, though I've resorted to taking the side of the case off and putting a room fan blowing into the case, the way the cooling works on that card it superheats the interior of the case so if you don't vent it you will have some serious problems! 

Good luck!

With what I have it at now, the VRM temp is sitting around 89/91.5.

My tower = Thermaltake Chaser MK-1 VN300M1W2N
I have had both sides off and probably will keep them off now. That's funny you mention the room fan, I was just talking about that possibility with my girlfriend. Does it really work well?
Box fans are better when you want to move "fresh" air in and hot air out of a room full of rigs. They move a lot of air and aren't very "directional." It's kind of like using a full-size oven for one piece of toast. A PCI-slot fan would probably drop temps ~3-5*C and be much quieter and energy-efficient. Cheaper, too.
Sancho (OP)
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January 11, 2014, 06:20:48 AM
 #44



Thank you so much - the voltage really was the key. Getting 1350 now with similar settings. Smiley

Going to download GPUz now and see what the VRM sensors look like. Thanks!

No problem dude.  Your VRM temp is probably fine around 87C.  What kind of case do you have also?  I really had to get some serious airflow through the case to keep things in order.  I've got 6 120mm fans feeding air through, though I've resorted to taking the side of the case off and putting a room fan blowing into the case, the way the cooling works on that card it superheats the interior of the case so if you don't vent it you will have some serious problems!  

Good luck!

With what I have it at now, the VRM temp is sitting around 89/91.5.

My tower = Thermaltake Chaser MK-1 VN300M1W2N
I have had both sides off and probably will keep them off now. That's funny you mention the room fan, I was just talking about that possibility with my girlfriend. Does it really work well?
Box fans are better when you want to move "fresh" air in and hot air out of a room full of rigs. They move a lot of air and aren't very "directional." It's kind of like using a full-size oven for one piece of toast. A PCI-slot fan would probably drop temps ~3-5*C and be much quieter and energy-efficient. Cheaper, too.


Thanks, didn't even know they made pci slot fans - I'll check it out!

Any recommendations?
Kluge
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January 11, 2014, 06:04:53 PM
 #45



Thank you so much - the voltage really was the key. Getting 1350 now with similar settings. Smiley

Going to download GPUz now and see what the VRM sensors look like. Thanks!

No problem dude.  Your VRM temp is probably fine around 87C.  What kind of case do you have also?  I really had to get some serious airflow through the case to keep things in order.  I've got 6 120mm fans feeding air through, though I've resorted to taking the side of the case off and putting a room fan blowing into the case, the way the cooling works on that card it superheats the interior of the case so if you don't vent it you will have some serious problems! 

Good luck!

With what I have it at now, the VRM temp is sitting around 89/91.5.

My tower = Thermaltake Chaser MK-1 VN300M1W2N
I have had both sides off and probably will keep them off now. That's funny you mention the room fan, I was just talking about that possibility with my girlfriend. Does it really work well?
Box fans are better when you want to move "fresh" air in and hot air out of a room full of rigs. They move a lot of air and aren't very "directional." It's kind of like using a full-size oven for one piece of toast. A PCI-slot fan would probably drop temps ~3-5*C and be much quieter and energy-efficient. Cheaper, too.


Thanks, didn't even know they made pci slot fans - I'll check it out!

Any recommendations?
You'd probably want an intake PCI fan, which is pretty uncommon. This assumes your gfx card is "normal" and takes air in from the face of the fan, blowing it out the PCI vents. This is a double-slot one... there should be a single-slot version somewhere, but this is what you'd want: http://www.frys.com/product/4764059?source=googleps&gclid=CIuc4vjY9rsCFWRk7AodxVgAaQ

You usually can't effectively reverse the orientation of these kinds of blower fans, so you'd probably want one designed as an intake fan (else you'll need a creative DIY solution). You might not be able to get around wanting to put an "air pipe" in for the PCI vent, though.... this solution non-ideally takes air which will partially be what the GPU fans just exhausted, though it's way better to have more 22*C air over a 90*C component than less 18*C air over a 90*C component. Ideally, you'd want to create a plastic or metal air-tight pipe which has a mouth over the PCI vent(s) being used, then jutting out the side of the case so you're sure you're getting ~100% fresh air. If you get DIY like that, you'd probably want to mount another normal case fan over the end of the "air pipe."
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