|17 Oct 2009||#1|
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12Gb suddenly shows as 8Gb!
First my specs:
i7 920 @ 4.0GHz
3R Systems Prima Boss II 120mm CPU cooler
Asus Rampage 2 Extreme
12Gb GSkill DDR3 12800
Palit 4870X2 Revolution in CF
150Gb WD Raptor
300Gb WD VelociRaptor
1000Gb * 2 WD Caviar Black
1000W NC Top
Heroichi Cougar Big Tower
Windows 7 Ultimate RTM x64
I recently upgraded MB, RAM and CPU two months ago (new). After clean install of Windows 7 everything was working just great!
This afternoon, CPU meter in sidebar, system performance info (in control panel) and BIOS shows 8Gb! Funnily enough CPUz still shows 12Gb.
Removing 3 channels of memory and rebooting resulted in....NOTHING. No beeps, no BIOS posts-just a black screen with a "locked" message on the BIOS LED.
Trying 1 stick, 2 sticks, 3 sticks (in combo) resulted in the same result-NOTHING. 4 sticks worked but showed up as 4Gb, 5 sticks 6Gb ad 6 sticks 8Gb. Clearing CMOS faired the same results.
I have OCd the CPU to 4.0GHz WITHOUT altering voltages (all settings on auto)
What could be the problem? Bad sticks?
Thanks in advance!
|My System Specs|
|18 Oct 2009||#7|
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Hi there guys,
Just wanted to thank you for all your assistance.
Checked msconfig and checked BIOS. No luck.
I took out all memory and installed one by one in sequence.
2Gb each in slots 2, 4 then 6 (consecutive reboots).
Another 2Gb in slots 1, 3 (total 10Gb confirmed in system and CPUz).
However back to 8Gb after inserting last stick in slot 5!
I exchanged this with stick from slot 4 and system/CPUz recognized 6Gb!
I think one stick is bad which I will RMA tomorrow.
However I don't understand why this "bad" stick will subtract an extra 2Gb. ie, 5 good +1 bad stick registers as 8Gb usable, 4 good +1 bad stick registers as 6Gb.
Anyways, thanks again.
|My System Specs|
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