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Asus P8Z68-M PRO Prime95 Instant Fail

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November 7, 2012 8:14:27 PM

I have searched all over for quite some time now and I am at a loss, here is my problem. I get an instant failure with Prime95 resulting in a BSOD 124 every time. I will note that I had issues with my Gigabyte GT560 which is being sent back to Gigabyte. For this reason I installed an old GT220 and did a clean install of the lastest Nvidia drivers, but here all my system specifications;

Motherboard: Asus P8Z68-M PRO with the latest bios 3905
Processor: Intel i7-2600k @ 3.4GHz
RAM: 2X4GB Kingston DDR3 1333MHz - 9,9,9,24 @ 1.5v
Graphics Card: GT220 1G Nvidia Drivers 306.97 (switching to Gigabyte GT560 1G DDR5 once it arrives)
Power Supply: Thermaltake TR2 600W
HDD: Seagate SATA 500GB 16MB
Case: Thermaltake V3 – Intake (2 x 120mm), Exhaust (2 x 120mm, 1 x 92mm)
CPU VCORE: Min 1.00v – Max 1.29v
Core Temperatures;
1 Min 28c – Max 37c
2 Min 28c – Max 40c
3 Min 28c – Max 38c
4 Min 23c – Max 34c

Some other notes;
The CPUTIN is always high somewhere around 90c but I have read that this is an anomaly with Hardware Monitor. I have tried multiple versions of the Nvidia drivers going back to the 295 divers. I ran MemoryTest and came back with no errors and the temperature of the GPU never goes over 55c. I have not over clocked anything however the motherboard’s default optimized settings allow it to automatically over clock itself. The failure happens when I do a Prime95 blend test and it is an instant failure. I have ran out of ideas, any help is appreciated.
November 7, 2012 8:56:49 PM

bigcyco1 said:
The power supply you have is not very good in fact it's list on the worst of the worst list Tier 5 - NOT RECOMMENDED. Replace ASAP if you have one. Source: http://www.eggxpert.com/forums/permalink/323050/323050/...


I have felt that the 600W PSU I have is a little low for the system and the GPU but I didn't know it was downright awful, lol. If I were to replace the PSU how many Watts would you recommend keeping in mind I am plan on installing the Gigabyte GT560 1G DDR5 as soon as I get it back?

Also how can I tell for sure that the problem is the PSU besides simply replacing it? Are there any indicators I should look for?

- Thanks, Rob
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a c 556 V Motherboard
November 7, 2012 9:00:37 PM

Hi, Have you tested the system with only one RAM stick installed? What's the RAMs model?
November 7, 2012 9:26:42 PM

alexoiu said:
Hi, Have you tested the system with only one RAM stick installed? What's the RAMs model?


I haven't ran a memory test with only one RAM stick installed but I will as soon as I am able to. In addition to the information I posted about the RAM I am not sure exactly what you mean by RAM model but here is the link to all the information about the RAM;

http://www.kingston.com/datasheets/KHX1333C9D3B1K2_8G.p...


- Rob
a c 86 V Motherboard
November 7, 2012 9:41:28 PM

As much as the power (Watts) requirement matters, the current requirement, measured in Amps is as important if not even more important. This is especially true if you have an or several dedicated video card(s). As a general rule of thumb, you are aiming for the highest number on the 12V line.GeForce GTX 560 - On your average system the card requires you to have a 500 Watt power supply unit.I recommend one of these
Antec Neo Eco 520C
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Seasonic made. 40 amps 12V power. $55 and 3 yr warranty

Seasonic 520W S12II
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Seasonic. 40A. 5 year warranty
November 7, 2012 10:51:03 PM

alexoiu said:
The model is KHX1333C9D3B1K2/8G
I can't find the kit listed as compatible: http://www.kingston.com/en/memory/search?DeviceType=7&M...
Try it though with only one module and see the result.


I just ran a memory test with only one RAM stick installed and it showed no errors.
a c 556 V Motherboard
November 8, 2012 3:59:11 AM

Now test with the other module.
November 8, 2012 5:50:05 AM

The other module showed no errors also.
a c 556 V Motherboard
November 8, 2012 6:33:28 AM

Now test again with both. If errors occur, I think it's a compatibility issue and I suggest returning them and choosing a compatible kit.
November 8, 2012 6:43:49 AM

alexoiu said:
Now test again with both. If errors occur, I think it's a compatibility issue and I suggest returning them and choosing a compatible kit.


I tested with both installed before I made my original post, then each individually, all three tests came back with no errors.
a c 556 V Motherboard
November 8, 2012 8:56:14 AM

I haven't read thoroughly. I thought you conducted the Prime 95 test with only one RAM stick installed. Can you test?
November 8, 2012 5:30:02 PM

So far I have ran MemTest86+ a total of three times, once with two sticks of Ram installed and then once on each individual stick of Ram installed.

After the tests completed and no errors were found I went ahead and ran Prime95 each time and it instantly failed each time.

I have this sneaking suspicion that something is wrong in my bios. I found an in-depth setup guide for the Asus P8 boards and printed that off and I am going to run through things one by one, we will see what happens.
November 14, 2012 11:04:29 PM

After doing some more reading I found that some people were having issues while overclocking and using hyperthreading so I turned my HT off and the problem was solved. This seemed like it was the easier of the two solutions given the motherboard automatically overclocks and I didn't want to mess with changing everything to manual and playing with settings.

- Robert
!