Why Can Set Two DIMMs To 1066 But Not Four
Aug 6, 2012
I have four identical 2GB sticks of OCZ Platinum DDR2-1066 DRAM (confirmed via various apps) in my rig. But BIOS refuses to run them at anything above 800MHz (Dual Channel 400MHz x 2.) At startup, Bios reports my memory is "DDR2-800".Originally, I was running only two 2GB sticks @ 1066, but after adding two more sticks of identical memory, BIOS's "Auto" settings downshifted to DDR2-800. I have tried setting the BIOS values by hand, increasing Dram voltage to 2.1v, bumping the mem-clock speed to 533, etc and so on. The result is always the same: an unstable system that crashes within minutes.It doesn't matter WHICH two sticks I use, as long as I'm only using two sticks of memory, I can run @ 1066. But never with all four installed, and I have no idea why.When I run "MemSet 3.5", it shows two of my DIMMS running @ "127ns" and two running @ "75ns". Setting all four the same (both 75ns or 127ns) causes Windows to crash. [code]
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Nov 14, 2011
i built a sandy bridge computer 5 months ago and it worked out great. however today (more specifically this night), i am getting a werfault error when i try to run my calculator (calc.exe). bare with me because this is off the top of my head. the error says something like cannot find reference in *memory address* then gives me another error saying that calc.exe couldnt start correctly.
my first initial thought is that i should run memtest and what not. but i wanted to try to do a system restore first to see if it clears up anything. however, i am prevented from restoring my computer. i would run it and select a date and confirm the restart but then it comes back with system restore has failed/errored. so i am thinking it could be a virus that deleted something important and prevented me from restoring my computer.not sure if these things indicate something else, but i have also encountered "video driver stopped responding and has recovered". in addition, my task bar has been changing from windows 7 theme to a windows 98 type bar and back.
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Apr 15, 2011
Got some spare ram kicking about which to use ? and a spare 8800gt sli?
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Jul 7, 2012
I have four identical 1GB sticks of G.Skill PC2-8500 memory, and I cannot seem to get Windows 7 to boot with all of them installed. I am using a ASUS Rampage Formula board in which I have successfully used 4GB of PC2-6400 memory in the past. I've done a BIOS update to the latest version and still Windows will not boot. I know the RAM sticks are good and I can use any of them in a 2 to 3GB configuration, and load Windows fine, but once 4GB installed it will hang at the loading screen and throw a quick BSOD (much to quick to read any info); then just restart.This is a 64-bit OS so I have no idea why this isn't working, but it's obviously a Windows side issue. The hardware is good and no BIOS settings affect the hang or crash.
Safe Mode does not work with 4GB installed either and I cannot seem to set any maximum memory settings using MSCONFIG. Windows also states that only 2.00GB is usable which isn't right either... I installed the OS several months ago with only 2GB installed, but I figured adding another 2GB, using identical modules, would work just fine. At first the board didn't seem to like it but flashing BIOS seemed to help fix any instability.'ve never experienced this problem before...*EDIT*Blue Screen info is as follows:PFN_LIST_CORRUPTSTOP: 0x0000004E
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