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post #41 of 47
Thread Starter 
Loose screws? I had them on a video card one time. Every one has a bad day now and then. It is the persistant problems that get my attention. Like right now this UD3 R4 is not showing the CPU fan at all. It was there yesterday. The R3 did that too.

I am curious about you claim of overheating VRMs on a GD80. At 4.7 ghz while being stress tested mine were warm to the touch. Not hot, but merely warm. What does it take to overheat those things?
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post #42 of 47
Quote:
Originally Posted by miklkit View Post

Loose screws? I had them on a video card one time. Every one has a bad day now and then. It is the persistant problems that get my attention. Like right now this UD3 R4 is not showing the CPU fan at all. It was there yesterday. The R3 did that too.

I am curious about you claim of overheating VRMs on a GD80. At 4.7 ghz while being stress tested mine were warm to the touch. Not hot, but merely warm. What does it take to overheat those things?

If its warm at 4.7 and not burning hot you are okay, mine I could not have my finger on for more than a split second, felt like I was touching a 60w light bulb that had been on for an hour.
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post #43 of 47
Thread Starter 
Ugh. That sounds like my UD3 R3 at 4.5 ghz. With an aftermarket VRM cooler and 3 120mm fans in that corner of the case the VRMs would get so hot that the case behind them would be too hot to touch.
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post #44 of 47
Quote:
Originally Posted by miklkit View Post

Ugh. That sounds like my UD3 R3 at 4.5 ghz. With an aftermarket VRM cooler and 3 120mm fans in that corner of the case the VRMs would get so hot that the case behind them would be too hot to touch.

That vrm cooler was a joke on the UD3, GB was not thinking with that one. How they thought that little piece of aluminum could cool those vrm's was beyond me
Edited by Hits9Nine - 8/14/13 at 8:35am
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post #45 of 47
Quote:
Originally Posted by miklkit View Post

Loose screws? I had them on a video card one time. Every one has a bad day now and then. It is the persistant problems that get my attention. Like right now this UD3 R4 is not showing the CPU fan at all. It was there yesterday. The R3 did that too.

I am curious about you claim of overheating VRMs on a GD80. At 4.7 ghz while being stress tested mine were warm to the touch. Not hot, but merely warm. What does it take to overheat those things?

There is a fairly significant voltage wall above 4.8ghz with the Vishera's I have played with. Above that is where things start really stressing the power delivery system.
I've pushed up to 1.72 volts (1.64 at load ) through the cpu on mine while running short 8 threaded benches (cinebench being the longest), with good airflow over the heatsink, it never did get uncomfortable to the touch. If you are running a waterblock, make sure you have a fan blowing directly on the vrm heatsink as it won't get any air like it would with a HSF.
The place that got the warmest was near the vrm's on the back of the motherboard. I would recommend a spot fan on the back side of the socket area if you want to push anywhere near that hard.

Airflow over the heatsink is so important, I have seen it make 20C difference on some motherboard components.
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post #46 of 47
Thread Starter 
That sounds encouraging. I know 4.7 ghz is low hanging fruit and it sounds like 4.8 ghz could be doable for a daily driver rig with no temperature issues.
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post #47 of 47
Quote:
Originally Posted by miklkit View Post

That sounds encouraging. I know 4.7 ghz is low hanging fruit and it sounds like 4.8 ghz could be doable for a daily driver rig with no temperature issues.

That's a very nice speed for these chips as a 24/7 overclock.
It takes so much more voltage to make of these chips stable at 5ghz+ that the gain in speed probably isn't worth the investment in energy.

I like to set my GD-80 rig up - CnQ enabled with a 1.4 ghz idle and a 5ghz loaded clockspeed, just like in the vid I posted. But it's important to note that I have good airflow on the vrm's and a high quality PSU.

Here is a SS of my MSI rig running wprime at 5.525 Ghz on 1.72 volts with an H-100 in some chilly ambients - would not advise that anyone try this at home tongue.gif

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