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G.skill and Crucial Modules not working together.

post #1 of 5
Thread Starter 
Hey,

I recently purchased 2 4GB Crutial Ballistix Sport (9-9-9-24 1600MHz 1.50V) modules to add to my existing 2 2GB G.Skill RipjawsX (9-9-9-24 1600MHz 1.50V) modules. I find that, when all 4 sticks are in, Windows blue screens randomly and frequently as you would expect with bad memory modules (BCCodes point to memory problems). However memtest passes with all 4 sticks and Windows runs fine when either pair of modules is in by themselves.

I have checked the timings in Bios so they are the same and enabled/disabled the XMP profiles even though they are identical.

Has anyone else had problems with this combination? Am I missing some crucial setting in bios or is it just bad luck and these modules won't work together.

Many thanks!

(Running on Z87 board)
post #2 of 5
Quote:
Originally Posted by Partier View Post

Am I missing some crucial setting in bios or is it just bad luck and these modules won't work together.

Mixing memory is risky, at best. Including memory with the exact same "published" specs.
Manufacturers only list a few of the timing specs, there are 31 in total.

I'd first try underclocking them.

You can download Thaiphoon Burner to see all the specs, but don't change anything (it lets you can rewrite the SPD tables on the sticks). Just look!
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My System
(15 items)
 
  
CPUMotherboardGraphicsRAM
FX6300 Black M5A99X EVO R2.0 Nvidia GTS450 Team Vulcan PC3 12800 
Hard DriveOptical DriveCoolingOS
Samsung 840 PRO Asus DRW-1608P (x2) Custom Water Cooling Win7 (Ult), Win 8.1 & Win Server 2012 R2 
MonitorKeyboardPowerCase
2 X Samsung 915N Ducky Shine III, Blue Cherry/Blue LEDs PCP&C 1kw Lian Li PC-71 (W/Window) 
MouseAudio
Logiteck G400s none 
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post #3 of 5
If underclocking to DDR3-1333, raising command rate (to 2T) or tRFC / Ref Cycle Time (to ~150) doesn't help, then you might just have to get rid of the RipjawsX and use 8Gb of Ballistix.
post #4 of 5
Thread Starter 
Thanks for the input!

I have underclocked to 1400MHz and it seems stable so far, hopefully it will stay that way!
post #5 of 5
I had a similar deal. I bought a buddy's old Mobo/CPU/RAM combo to build a 2nd gaming rig. While I was awaiting parts, I figured I'd try his RAM in my rig. I have G-Skills Ripjaws and he had Corsair Vengeance. Both identical speeds, times, and volts. Only difference I saw was the heatsinks. They did not want to work together AT ALL.
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