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eVGA GTX 580 backplate, $20 for hotter temps? - Page 3

post #21 of 43
If you want better coooling sell the backplate and get this...
Unless the 480 one doesn't fit then wait for the 580 release.

Edit -Just noticed which version of the 580 you have.
Guess it would be a side grade.

>.<
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>.<
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post #22 of 43
Thread Starter 
Quote:
Originally Posted by windfire View Post
I think I might have an explanation for this unusual outcome:
Your GTX580 is Sparkle GTX580 which has special cooling (ie those 3 giant purple fans). Those fans blow air down through the heatsink and the hot air is exhausted all around.

Now, the EVGA back plate has a lip curls around the top, going from the SLI connectors almost all the way to the back of the connectors. Now, this length of lip just blocks some of the escape path of the exhausting hot air, thus negating all the benefit of the back plate cooling.
Edit #1: ie some of the red arrows in the pic below is blocked off

Sounds reasonable?

If this is the case, the question to ask is: is 1C worse worth the extran protection and the cool-looking factor?
The cooler I have does not interfere with the backplate. The backplate only effects the back of the card. The exhaust on my cooler is 1/2" taller than the PCB and about almost 3/4" away from it. The eVGA backplate only has maybe 1/16" of an inch at most at the lip. Should have no physical effect in relation to my cooler.


Quote:
Originally Posted by LiLChris View Post
If you want better coooling sell the backplate and get this...
Unless the 480 one doesn't fit then wait for the 580 release.

Edit -Just noticed which version of the 580 you have.
Guess it would be a side grade.

lol, yeah already have that cooler. It works better than the stock vapor chamber.
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post #23 of 43
Thread Starter 
Quote:
Originally Posted by windfire View Post
I think I might have an explanation for this unusual outcome:
Your GTX580 is Sparkle GTX580 which has special cooling (ie those 3 giant purple fans). Those fans blow air down through the heatsink and the hot air is exhausted all around.

Now, the EVGA back plate has a lip curls around the top, going from the SLI connectors almost all the way to the back of the connectors. Now, this length of lip just blocks some of the escape path of the exhausting hot air, thus negating all the benefit of the back plate cooling.
Edit #1: ie some of the red arrows in the pic below is blocked off

Sounds reasonable?

If this is the case, the question to ask is: is 1C worse worth the extran protection and the cool-looking factor?
If someone wishes to post true and authentic non-skewed on/off/on/off results of their own, I would be interested to see them.


I hope you're right, windfire. Otherwise this thing is a is a gyp to all 580 owners buying it for thermal purposes.
Edited by VirtualJockey - 12/20/10 at 7:14pm
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post #24 of 43
on my 480s the Back did lower the temps by about 3 Deg C.....

But the 580 plate doesn't even look like it touches the back of the GPU...
post #25 of 43
Thermodynamically speaking, only when there's contact between back of the gpu and the back-plate would there be temp decrease.

Quote:
Originally Posted by VirtualJockey View Post
Tested on, tested off, tested on, tested off. All within 45 mins or so. I'd say my results were strikingly consistent.


edit: And yes, I definitely notice a difference in PC component temps from ambient temps in changing weather. In this case, it's winter and freezing in my room. Sub 60F.
I think you're prolly right. However you just can't tell statistically speaking; Therefore scientifically speaking the conclusion is invalid. Since it doesn't work for you then definitely try to return it. If not I'm sure one of OCN'ers or Ebayers would like to have it.
    
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post #26 of 43
Warburg said that his EVGA backplate dropped his 480 Calibre 2-3 degrees.
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post #27 of 43
Quote:
Originally Posted by Draygonn View Post
Warburg said that his EVGA backplate dropped his 480 Calibre 2-3 degrees.
Of course they work on 480's, drastically too! This is interesting about the 580 though, I would really like to know more before I purchase 2 of these with 2 High Flow Brackets for my 580's.
post #28 of 43
on the 480s like mine.. they contact the back of the PCB where the GPU is... so they drop the temps
post #29 of 43
Thread Starter 
UPDATE:
I have removed some extra cooling from my PC. The eVGA pretty much does not affect temps at all, good or bad. However, it does ruin good temps due to restricted airflow from nearby PCI cooling solutions.

The backplate appears to completely negate benefits of external PCI/VGA fans.


The backplate idles between normal and 1 degree hotter intermittently, and has no effect on load. If you have better airflow in your case, it causes about a solid 1 degree hit on your temps.

I'd still rate the product as a fail since it negatively affects idle temps *at best*. Unless you were buying it for style or for physical protection, steer clear.
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post #30 of 43
Damn, mine should be here tomorrow. I will post results, hopefully I get a good outcome. I would still keep it for aesthetic purposes and stabilization unless it increases temps too much but I doubt it will.
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