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post #1621 of 4128
6/20/12 at 9:58pm
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Quote:
Originally Posted by raygos View Post

Palit GTX 580.
77968219.jpg

You are going to have to dremel those off i believe.
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post #1622 of 4128
6/21/12 at 5:18am
Quote:
Originally Posted by Rage19420 View Post

You are going to have to dremel those off i believe.
Think i'll pass on the mod for now. My main focus is silence, temperature is second but not a priority, i don't really have any issues with temperatures at full load with the Palit GTX 580, but those 80mm dc brushless fans built into the shroud irritate me no end. The problem is even if i was to do the mod the noise from the corsair h70 or h60 cooler kits annoy me too, that's why i don't use them. Anyway, GTX580 is back in my pc. Noise at full load is my only gripe with graphics cards. I have had the GTX 580 for 13 months now, is a great gpu and serves me well for gaming (except the noise at full load:)). Not sure what i will do about my next GPU upgrade ?, water cooling is the next possible route i'll take but what about the noise from pumps and fans on rads?. Tricky one for me i think.

Not my greatest fans haha! smile.gif

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post #1623 of 4128
6/21/12 at 7:09am
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Silence was the main objective for me as well. Most people don't use the stock fans that come with the Corsair and Antec kits. I use some Antec Tri-cools and mostly run them at 40-50% via controller when gaming and it keeps the cards at 50c max peak temps. Some also use the scythe fans that are popular as well.
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post #1624 of 4128
6/21/12 at 11:58am
Maybe this has been covered before, but I was wondering why is this so effective? I mean these coolers are meant for CPUs that suck down a half or a third as much power as these GPUs, yet the temps on the GPUs are better with these coolers? The only explanation I can conceive of is GPUs are radically less leaky than CPUs.
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post #1625 of 4128
6/21/12 at 12:21pm
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I would imagine a few things. Intel is manfacturing on 32nm right now. Most GPU's we've got are still 40nm, larger lithiography allows for more space, larger die's and thus more area for cooling. We have probably all read how much ivy bridge is producing some incredible heat with 22nm. Fortunately 28nm GPU's are still quite good with heat.

That'd be my guess
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post #1626 of 4128
6/21/12 at 12:39pm
I'm also going for silence before performance, so I feel like I should mention that the kuhler 620's I have are really quiet. They sit at the top of my case right next to my exhaust pumping at 100% and are pretty much inaudible over the sound of my system fans (all set on 50% or less, Noctua's and AP180's). I might soundproof them in something when I rebuild my shrouds but I'm thinking I won't need to.

Also, though there are lots of threads about this over in the watercooling forum, with a decent WC setup the only real noise is from the fans and the pumps. General consensus is air is still quieter than water (at the sacrifice of performance over course) unless you've got a fair bit of money, but quiet fans and pumps can be purchased as well as soundproofed boxes for pumps, and you can also stick your radiators in your basement or something.

For the price though this was definitely the best option for me.

Edit: "at the sacrifice of performance"
Edited by claes - 6/21/12 at 11:07pm
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post #1627 of 4128
6/21/12 at 1:11pm
Quote:
Originally Posted by derfer View Post

Maybe this has been covered before, but I was wondering why is this so effective? I mean these coolers are meant for CPUs that suck down a half or a third as much power as these GPUs, yet the temps on the GPUs are better with these coolers? The only explanation I can conceive of is GPUs are radically less leaky than CPUs.
My only guess is that GPUs are usually under 1 GHz and CPUs are usually above 3, and that generates more heat somehow.
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post #1628 of 4128
6/21/12 at 8:31pm
Quote:
Originally Posted by Art Vanelay View Post

Quote:
Originally Posted by derfer View Post

Maybe this has been covered before, but I was wondering why is this so effective? I mean these coolers are meant for CPUs that suck down a half or a third as much power as these GPUs, yet the temps on the GPUs are better with these coolers? The only explanation I can conceive of is GPUs are radically less leaky than CPUs.
My only guess is that GPUs are usually under 1 GHz and CPUs are usually above 3, and that generates more heat somehow.

I believe its the available volume of space for cooling that drives a small amount of that added power consumption over CPU's

I have observed slightly lower power consumption, even at higher clocks because the gpu is kept cooler. Same with VRM's, once i pointed a decent fan at them, my kill-o-watt dropped another few watts.
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post #1629 of 4128
6/21/12 at 9:27pm
Quote:
Originally Posted by Xinoxide View Post

I believe its the available volume of space for cooling that drives a small amount of that added power consumption over CPU's
I have observed slightly lower power consumption, even at higher clocks because the gpu is kept cooler. Same with VRM's, once i pointed a decent fan at them, my kill-o-watt dropped another few watts.
The die size probably does help significantly. I never realized that the gf100 die was so large:
http://www.gpu-tech.org/attachment.php?s=bc4f610625abffaa2862ea1c440c4493&attachmentid=130&d=1285323334
It is a lot bigger than the sandy bridge core:
http://photos.pcpro.co.uk/images/front_picture_library_PC_Pro/dir_306/it_photo_153232_52.jpg
That probably would help a lot.
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post #1630 of 4128
6/21/12 at 10:09pm
Quote:
Originally Posted by derfer View Post

Maybe this has been covered before, but I was wondering why is this so effective? I mean these coolers are meant for CPUs that suck down a half or a third as much power as these GPUs, yet the temps on the GPUs are better with these coolers? The only explanation I can conceive of is GPUs are radically less leaky than CPUs.

CPUs sit in a socket. GPUs are soldered down on the card. Cards typically have inner copper plane layers for ground and power. It can and does act like a heat sink to some degree. A GPU card typically has better exposure to air flow than a motherboard.

The larger GPU die has more surface area, and maybe less power dissipated per square mm.This could lower delta T (temperature difference) between the die and the outside world.

Not all of the GPUs card power is used in the GPU chip. Some is lost to VRM (in)efficency, and some is used in the VRAMS. I coud hazard a guess, but it really would be a guess. It would be nice to see actual specs on the GPUs.
Edited by WarDad - 6/22/12 at 10:18am
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