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Should I bother tossing heatsinks on any of these? - Page 2

post #11 of 22
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Just installed the card and started playing around. Did a short furmark test and started touching stuff. Since I run a benching station as my main case, I have easy access to touch stuff. Winfire was right in the 2nd post that the stuff he drew a green box around were only warm and not hot. But there are a lot of stuff that is HOT to the touch ... I'm talking caused me a burning pain if I held my finger on it for more than a second or two. Stuff that I didn't even thing needed cooling.

I don't have time tonight, but in the next day or two I'm going to run some more furmarks and put up a diagram of all the stuff thats burning hot, warm, or cool to the touch. I think some of these things are not cooled on any GTX 480 card I saw. I'm pretty surprised with how quietly the stock cooler runs. So far, I'm loving this card. Is there any way to check what my stock volts are?
    
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post #12 of 22
Quote:
Originally Posted by Steven-1979 View Post
Just installed the card and started playing around. Did a short furmark test and started touching stuff. Since I run a benching station as my main case, I have easy access to touch stuff. Winfire was right in the 2nd post that the stuff he drew a green box around were only warm and not hot. But there are a lot of stuff that is HOT to the touch ... I'm talking caused me a burning pain if I held my finger on it for more than a second or two. Stuff that I didn't even thing needed cooling.

I don't have time tonight, but in the next day or two I'm going to run some more furmarks and put up a diagram of all the stuff thats burning hot, warm, or cool to the touch. I think some of these things are not cooled on any GTX 480 card I saw. I'm pretty surprised with how quietly the stock cooler runs. So far, I'm loving this card. Is there any way to check what my stock volts are?
To check the stock voltage, you can use either the simplier GPU-Z (pic 1) or the more powerful MSI Afterburner (pic 2).

GPU-Z: http://www.techpowerup.com/gpuz/
Afterburner: http://event.msi.com/vga/afterburner/overview.htm

A side note:- IMHO, I think a finger test should not be used as the criteria to determine if (extra) cooling to a PC component is needed or not. I mean, the comfortable operating temperature of a human should not be directly compared with safe operating temperature of an electronic device. But, of course, more cooling never hurts.


Edited by windfire - 7/28/11 at 8:16pm
post #13 of 22
Thread Starter 
Cool. It's 1.025v for the stock settings of 821/950/1641
    
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post #14 of 22
Thread Starter 
Anyone know if there is any risk of me shorting something out if I just toss an single strip of thermal tape going down the red area: http://www.overclock.net/air-cooling...-any-risk.html
    
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post #15 of 22
There are some thermal pastes that are non-condutive (electrically) But I don't know about tape. Pastes get squeezed so thin that they mostly just fill tiny gaps between the chips and sinks. Tape retains some thickness. I know of no material that would conduct heat, without being at least somewhat conductive electrically. (Considering the thickness.)
    
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post #16 of 22
Sekisui 5760 is a good thermal tape. I read that major manufacturers like OCZ and Thermaltake use this tape in their RAM & other heatsink kits.

I suggest first putting a piece of tape to the underside of a heatsink. Then, press the heatsink onto the mosfets. By this process, you can make sure there is no slacking of a piece of tape (thus touching other parts of the PCB).
See the diagram below for the process.

Regarding the possibility of shorting, the chance should be very small as this kind of type usually is not electrically conductive enough to offer the chance. Rather, that ultra slim possibility might come from (conductive) dust/dirt gets sticked to the tape.
post #17 of 22
Thread Starter 
Thnx, Windfire. All the way to the right, next to the 4 chips that have a red box around them are 2 gray boxes that say "R47" on them ... any idea why they would be running extremely hot under load / heavy gaming?

http://www.overclock.net/attachments...so-15i-pcb.jpg
    
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post #18 of 22
Quote:
Originally Posted by Steven-1979 View Post
Thnx, Windfire. All the way to the right, next to the 4 chips that have a red box around them are 2 gray boxes that say "R47" on them ... any idea why they would be running extremely hot under load / heavy gaming?

http://www.overclock.net/attachments...so-15i-pcb.jpg
I am not a card designer and am just speaking from my own observation.

See the pic below. The orange rectangle (chokes, capacitors, mosfets) right under the power input (8-pin and 6-pin PCIE connectors) functions as a first line of defense to iron out any noise, spikes, ripples...etc when power enters the card at the input.

At heavy loading/gaming, high current comes in and the heavy filtering load gets the R47 chokes warmed up.
post #19 of 22
Thread Starter 
Cool. You really seem to know your stuff. Are you an electrical Engeneer or something? I appreciate all the advice you're giving.
    
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post #20 of 22
Quote:
Originally Posted by Steven-1979 View Post
Cool. You really seem to know your stuff. Are you an electrical Engeneer or something? I appreciate all the advice you're giving.
Well, I know some basics
I am glad that my posts are helpful.
And you are welcome.
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