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flavallee

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Also, are you sure you have the described Intel motherboard in that computer?

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crjdriver

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It would help if you monitored voltages while stressing the system. Use prime95 or IBT [intel burn test] to stress the system. Monitor the voltages while doing the stress test. Let it run for at least 10~15min and see if the 12V rail drops.
 

tyrionlannister

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Thanks.
Also, are you sure you have the described Intel motherboard in that computer?

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Quite sure. I double-checked.
It would help if you monitored voltages while stressing the system. Use prime95 or IBT [intel burn test] to stress the system. Monitor the voltages while doing the stress test. Let it run for at least 10~15min and see if the 12V rail drops.
Will do. Thanks.
 

tyrionlannister

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Used Prime95 and FurMark to stress test the CPU and GPU simultaneously, and recorded the results.
prime95 results:
+12.0V - 12.030
+5.0V - 5.100
+3.3V - 3.390

prime95 + FurMark results:
+12.0V - 11.770V
+5.0V - 5.060V
+3.3V - 3.310V

Interestingly enough, the PC rebooted just after I stopped the FurMark stress test.

Edit: Apparently prime95 doesn't impact the voltages at all, since FurMark alone reported the same results and the standby results were identical to the prime95 results I've posted above.
 
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crjdriver

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Prime95 is cpu and or ram intensive. It is a stability test. Furmark is a video card test and as such will make more of a demand on the pw supply. As you can see, you have found your problem. Look at the voltage drop on the 12V rail. As I said, install a quality pw supply as the first step. Most likely that will fix the problem; in any case, you must fix the voltage drop before doing anything else.
Here is an example of what you need for that system;
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151108
 
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tyrionlannister

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No. I was just wondering why you're using so little RAM for a gaming desktop.
Personally, I would use 4 matching 2 GB modules or 4 matching 4 GB modules.

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Apparently missed this message since I was on my cell. Anyway I just found out that both RAMs have different manufacturers and ridiculously low frequencies. With that said they apparently seemed to work fine on a different computer I had a year ago. Could this cause hard reboots?

Also, could failed capacitors be blamed?
 

metallica5456

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Mismatched memory could be a factor.

Yes BLOWN CAPS CAN DEFINITELY CAUSE PROBLEMS. We should wait on CrjDrivers input but most likely you have found the culprit
 

tyrionlannister

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Prime95 is cpu and or ram intensive. It is a stability test. Furmark is a video card test and as such will make more of a demand on the pw supply. As you can see, you have found your problem. Look at the voltage drop on the 12V rail. As I said, install a quality pw supply as the first step. Most likely that will fix the problem; in any case, you must fix the voltage drop before doing anything else.
Here is an example of what you need for that system;
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151108
A little out of my budget, how about this one? http://www.newegg.com/Product/Product.aspx?Item=N82E16817182294
Mismatched memory could be a factor.

Yes BLOWN CAPS CAN DEFINITELY CAUSE PROBLEMS. We should wait on CrjDrivers input but most likely you have found the culprit
Don't want to replace the PSU unless I absolutely have to, since my current one hasn't nearly run out of warranty yet.
Will try using a single memory stick, and check for any bulging caps and report the results.
 

crjdriver

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Junk. Do not replace one junk unit with another one.
Rosewill is the in house brand from newegg and a VERY few of their pw supplies are ok however that one is not one of them.
Look, you spent a LOT of money on a video card and you want to go cheap on the pw supply. Same thing as buying a Z06 Corvette and putting in reclaimed oil; just not a bright thing to do.
 
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tyrionlannister

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Did you find any leaking capacitors? Failed caps look like these pics.
No leakages, but a couple of them are bulging. Not sure what to make of it, but they move when poked. The board is about 4 years old.

Junk. Do not replace one junk unit with another one.
Rosewill is the in house brand from newegg and a VERY few of their pw supplies are ok however that one is not one of them.
Look, you spent a LOT of money on a video card and you want to go cheap on the pw supply. Same thing as buying a Z06 Corvette and putting in reclaimed oil; just not a bright thing to do.
Could you give me a couple of options like some good brands, series, etc.?
 

metallica5456

Andrew
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Corsair AX, AI, HX, RM and TX models are all fine.

FSP and PC Power and Cooling.
 
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