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Kuhler 620 OC problems

post #1 of 10
Thread Starter 
Did a new build over the last couple weeks and finally got everything I wanted except cooling, saw a Kuhler 620 on sale at Best Buy and replaced the stock fan. Now the OC I did with the stock Intel fan won't hold when running Prime95. I had it at 4.3GHz and 1.175v with the stock fan and was really pissed it wouldn't hold with the new cooling, much less allow for further OCing.

Asus P77Z-V LX MOBO
i5 2500k CPU
8GB Corsair Vengeance x 2 RAM
Corsair HX650 PS

Any thoughts, statements, outbursts, questions, etc.
post #2 of 10
Quote:
Originally Posted by seraphum View Post

Did a new build over the last couple weeks and finally got everything I wanted except cooling, saw a Kuhler 620 on sale at Best Buy and replaced the stock fan. Now the OC I did with the stock Intel fan won't hold when running Prime95. I had it at 4.3GHz and 1.175v with the stock fan and was really pissed it wouldn't hold with the new cooling, much less allow for further OCing.

Asus P77Z-V LX MOBO
i5 2500k CPU
8GB Corsair Vengeance x 2 RAM
Corsair HX650 PS

Any thoughts, statements, outbursts, questions, etc.

Hook the pump directly to the PSU and run a case fan on the PSU header. These things need to run full power to work properly. I had to have an adapter for mine. You should see a good drop in temps.
post #3 of 10
Thread Starter 
I got it stable at 4.0GHz 1.175v and the temps are 30 at idle and 50-55 during Prime95, I'll give it a try though.
post #4 of 10
Quote:
Originally Posted by seraphum View Post

I got it stable at 4.0GHz 1.175v and the temps are 30 at idle and 50-55 during Prime95, I'll give it a try though.

I had mine on a PhenomII 965-BE at 4.0Ghz. with a Hyper 212 and it didn't do squat hooked to the mobo, even with fan set at 100%. Hooked it direct and put a case fan to the PSU fan header and made a good difference in temps while folding. Dropped from mid to high 50's to low 50's. They're not the greatest, but they work well enough. I also had it as push/pull on the fans with them on the mobo fan header with a "Y" adapter.
post #5 of 10
Thread Starter 
Changed the fan plugs around and it us still the same temps, the temps aren't nearly as important to me as the oc ability. And it still won't hold 4.3 @ 1.175 like it did with the fan. Basically the temps are much cooler but I can't get anymore GHz out if it...
post #6 of 10
Quote:
Originally Posted by seraphum View Post

Changed the fan plugs around and it us still the same temps, the temps aren't nearly as important to me as the oc ability. And it still won't hold 4.3 @ 1.175 like it did with the fan. Basically the temps are much cooler but I can't get anymore GHz out if it...

That wouldn't have anything to do with the cooler unless the water block isn't seated properly. I have a GA-EP45 with a H60 that has to have the water block installed in one particular orientation or it won't make proper contact with the CPU. What exactly does it do when you try to OC? Is your PSU big enough to handle the added draw from the Kuhler as well as your OC? I need lots more info to be able to possibly pinpoint the problem.
post #7 of 10
Thread Starter 
Gathering information....
post #8 of 10
I'm not actually a i7 series CPU owner, so I'm giving you a link to a lot of people who are. I'm sure you can find answers in this thread:

http://www.overclock.net/t/1051733/the-official-intel-core-i5-2500k-i5-2550k-i7-2600k-i7-2700k-owners-club

Good luck! If I can be of further assistance, just holler! tongue.gif
post #9 of 10
Thread Starter 
Not sure what to say on the PSU having enough juice, 650w should be for what I'm doing but I would have to take some time to see what exactly It's running at on average, I don't think there is any software that would tell me watts, just volts.

When I change something in the bios, no matter how small the change, I get a BSOD within 2 min of Prime95 starting.

I changed the fans back to where they were "suppose" to go and reapplied new thermal paste and reseated waterblock, this gave me about a 3 degree decreased in average temps, I have just done this and am about to try the old OC I did on the fan again.
post #10 of 10
Quote:
Originally Posted by seraphum View Post

Not sure what to say on the PSU having enough juice, 650w should be for what I'm doing but I would have to take some time to see what exactly It's running at on average, I don't think there is any software that would tell me watts, just volts.

When I change something in the bios, no matter how small the change, I get a BSOD within 2 min of Prime95 starting.

I changed the fans back to where they were "suppose" to go and reapplied new thermal paste and reseated waterblock, this gave me about a 3 degree decreased in average temps, I have just done this and am about to try the old OC I did on the fan again.

It sounds like the water block wasn't making good contact. When that happened to me it drove me nuts until I finally figured it out.
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