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Vega's Quad-SLI 3GB GTX580 sub-zero liquid cooled build - Page 40

post #391 of 546
Quote:
Originally Posted by PoopaScoopa;13108973 
6 VRMs is the default on the reference boards. I don't think you would be safe running them at 1.2V 24/7 with only 6. I've heard of people killing reference cards with 1.2V on EVGA forums. 1.1V is definitely killing 570s with 4 VRMs.

Note the OP of the thread you linked wink.gif

6 VRM's is 50% more than you'll find on a reference 570. According to HWBot, the average overclock submitted on a GTX 580 on LN2 is 1188MHz. I can guarantee that is at way more than 1.2V. The standard for these cards subzero is around 1.35V-1.5V. The VRM's themselves are mostly temperature independent, so if the reference design can handle ~1.4V frozen, it should definitely be able to handle ~1.3V at low temperatures for a 24/7 setting.
Quote:
Originally Posted by CallsignVega;13119282 
Is bointing folding @ home? I can give it a try. wink.gif

Bointing is competing on HWBot! OCN can always use the submissions thumb.gif
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post #392 of 546
Thread Starter 
Quote:
Originally Posted by Defoler;13086287 
I think you are giving the electronics too much credit.

Even if he doesn't stress the CPU most of the time, keeping it at almost 1.6v for 24/7 is going to degrade the CPU even tho its under very low temps.

If he doesn't care is fine smile.gif
But I still think he is doing massive work to isolate it all and continue like that means he will have to remove it and do half of it over again to replace the dead cpu.

I think I am going to do some tests. Set the CPU at 4.0 Ghz, my current 24/7 4.87 Ghz (1.45vcore) and say 5.2Ghz and compare them against my Quad-SLI scaling thread. It will be interesting to see if lowering or increasing the CPU speed makes a dramatic impact.

As far as replacing the cpu, it is actually not that big of a deal. I can just use an Xacto knife to cut around the base of the cpu socket to "peel" off the CPU cooler block, replace the cpu and use some more dragon skin to seal up the seam. But then again, I am not keen on replacing a $1k cpu only after a couple of months!
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post #393 of 546
This is all mind boggling.
    
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post #394 of 546
Quote:
Originally Posted by CallsignVega;13120131 
I think I am going to do some tests. Set the CPU at 4.0 Ghz, my current 24/7 4.87 Ghz (1.45vcore) and say 5.2Ghz and compare them against my Quad-SLI scaling thread. It will be interesting to see if lowering or increasing the CPU speed makes a dramatic impact.

As far as replacing the cpu, it is actually not that big of a deal. I can just use an Xacto knife to cut around the base of the cpu socket to "peel" off the CPU cooler block, replace the cpu and use some more dragon skin to seal up the seam. But then again, I am not keen on replacing a $1k cpu only after a couple of months!

I'm very interested in the results!
 
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post #395 of 546
Quote:
Originally Posted by xxbassplayerxx;13119789 
Note the OP of the thread you linked wink.gif

6 VRM's is 50% more than you'll find on a reference 570. According to HWBot, the average overclock submitted on a GTX 580 on LN2 is 1188MHz. I can guarantee that is at way more than 1.2V. The standard for these cards subzero is around 1.35V-1.5V. The VRM's themselves are mostly temperature independent, so if the reference design can handle ~1.4V frozen, it should definitely be able to handle ~1.3V at low temperatures for a 24/7 setting
But they're not concerned with making sure the card lasts for a whole year, they're frequently killing their cards after doing extreme OCing. 1.3 doesn't seem safe for 24/7 operation for a whole year with only 6 VRMs. Anyways, if someone wants to put 1.3V on their 6 VRM 580, they certainly have that choice.
post #396 of 546
i would listen to bass he kinda knows his ****... just saying
post #397 of 546
Quote:
Originally Posted by PoopaScoopa;13122599 
But they're not concerned with making sure the card lasts for a whole year, they're frequently killing their cards after doing extreme OCing. 1.3 doesn't seem safe for 24/7 operation for a whole year with only 6 VRMs. Anyways, if someone wants to put 1.3V on their 6 VRM 580, they certainly have that choice.

You're acting like 6 VRMs is bad. It's not the number that matters but the quality. These VRMs have proven they can do 1.4-1.5V without blowing up and that's not something that's really time dependent as it's pretty much independent of temperature.
Quote:
Originally Posted by Onions;13122612 
i would listen to bass he kinda knows his ****... just saying

Don't give me that kind of authority man! We're both speculating but we just have different ideas of what will happen!
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post #398 of 546
lol just saying i have alot of respect for you.... and most of the time your right about things
post #399 of 546
Quote:
Originally Posted by xxbassplayerxx;13122647 
You're acting like 6 VRMs is bad. It's not the number that matters but the quality. These VRMs have proven they can do 1.4-1.5V without blowing up and that's not something that's really time dependent as it's pretty much independent of temperature.
You might be right. I don't own one myself to test it. I've just seen cases where EVGA 580s die with 1.2V on their forums.

The whole 570 and 590 VRM fiasco just made me really question Nvidia's reference VRM offerings. When I see DCII with 10 and Lightning with 12 it makes me wonder why they need so many more VRMs to handle that 1.4-1.5V.
post #400 of 546
VRM's can handle more current load and become more efficient at lower temps which is why these sub-zero cooled cards can handle such high voltages.

You try that with an air cooled, Heck even a water cooled card and it will die as the heat will kill the efficiency making the card handle less current and eventually killing them entirely.
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