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Unstable ASUS P8P67 WS Revolution and i7 2600K

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a b V Motherboard
August 17, 2011 7:49:22 PM

We need some new eyes on this thread please :) 

Original thread is here and is long and wordy:
http://www.tomshardware.com/forum/forum2.php?config=tom...

Then we moved it here:
http://www.tomshardware.com/forum/318428-31-unstable-bu...

Short version,
He's built this comp but it continues to have minor issues Prime95 eventually produces a crash.

Seems he's done memtest with no issues.

I had him bump the CPU voltage offset, no joy.

Just post on the new thread if you want to help, not this one :) 

Best solution

a c 716 V Motherboard
a c 207 Ĉ ASUS
August 17, 2011 8:32:24 PM

Assuming the 'Option 1' Tri-Channel set then do NOT use XMP, and instead manually set the Frequency, DRAM Voltage, and CAS Timings sometimes a QPI/VTT/VCCIO -> 1.20v helps.

Then I noticed 'F3-12800CL9D-8GBXL' I've posted here a zillion times that those will not 9/10 run Rated in 4x4GB and to use F3-12800CL8D-8GBXM IF you want DDR3 1600 MHz speed.

Solution 1 - Run the F3-12800CL9D-8GBXL at DDR3 1333 MHz and look at CPU-z 'SPD' for 667MHz CAS Timings and add Command Rate -> 2.

Solution 2 - RMA RAM and get 2 sets of F3-12800CL8D-8GBXM

Solution 3 - Get a 4x4GB Matched Set -> F3-12800CL9Q-16GBXL
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a b V Motherboard
August 17, 2011 8:41:03 PM

jaquith said:
Assuming the 'Option 1' Tri-Channel set then do NOT use XMP, and instead manually set the Frequency, DRAM Voltage, and CAS Timings sometimes a QPI/VTT/VCCIO -> 1.20v helps.

Then I noticed 'F3-12800CL9D-8GBXL' I've posted here a zillion times that those will not 9/10 run Rated in 4x4GB and to use F3-12800CL8D-8GBXM IF you want DDR3 1600 MHz speed.

Solution 1 - Run the F3-12800CL9D-8GBXL at DDR3 1333 MHz and look at CPU-z 'SPD' for 667MHz CAS Timings and add Command Rate -> 2.

Solution 2 - RMA RAM and get 2 sets of F3-12800CL8D-8GBXM

Solution 3 - Get a 4x4GB Matched Set -> F3-12800CL9Q-16GBXL




Thanks Jaquith, you are helpful and brief, as always :)  I quoted you so I could copy and paste. I'll pass that along.

I hadn't spotted the 4-pack of RAM myself. I wonder if it's really that simple? We'll see!
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a c 716 V Motherboard
a c 207 Ĉ ASUS
August 17, 2011 8:46:19 PM

You can try setting them manually: Frequency -> DDR3-1600MHz, CAS 9-9-9-24 + Command Rate -> 2, raise the DRAM Voltage -> 1.55v~1.60v, plus VCCIO -> 1.20v. Then 'see' what happens... 50/50.
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a c 210 V Motherboard
a b Ĉ ASUS
August 17, 2011 9:22:14 PM

If ya wanna try something else .... My son's running the CPU / MoBo combo with Mushkin CAS 7's at rated speeds and timings ..... 4.6 Ghz for everyday boot, 4.8 Ghz (HT disabled) on gaming boot via BIOS profiles feature
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a b V Motherboard
August 18, 2011 12:22:23 AM

We'll see where it goes. If you both feel it's still memory related that's good enough for me. I've had a number of puzzling threads lately :p 
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a b V Motherboard
August 25, 2011 12:11:51 AM

Best answer selected by Proximon.
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