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Motherboard will not run 8 gig of ram


Drewy

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Hi I am attempting to increase the ram on my PC. I have been running Dominator Twin2x4096-8500C5D. I purchased another set of ram the only difference being is the version number. the original ver 2.1 the new ver is 2.2 When I install the new ram I get main bios checksum error and the PC reboots and then continually loops with a message scanning bios image from hard drive. If I remove either pair of ram the PC works fine but when both pairs are installed (8gig) I get the checksum error. If I remove 1 ram chip ie 6 gig remaining the PC works I am unable to get to the bios as it remains in a loop. These sticks are in the Corsair compatabilty list. Any help please.
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Hi

They are the version numbers. The voltage I am running them at is 1.8. After much reading I managed to drop the speed to 800 as suggested by your good self and the system now works except it is slower. Am I right in assuming that the processor is now slower? I have a duel boot system one is 32 bit the other is 64 bit. I use the 64 bit for my photo editing program (Photoshop) and hoped the increase in ram would enhance it. But this does not seem to be the case. I am slightly dissapointed that Corsair list this ram in their compatability list and wrongly assumed that it would work straight out of the box. I am reluctant to purchase different ram as I am concerned the same thing will happen. Any advice on which ram to get would be very much appreciated.

 

John

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Hi

As you have guessed I am a novice at this. I have been running 4 gig of this ram and all has been OK for the last 2 months. Why should adding an extra 4 gig cause these problems. If I increase the voltage to 2.1 would this sort it? Wired suggested running at 800 which does work but is certainly slower.

 

John

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  • Corsair Employee
Synthohol is right, try 2.1v first. If the problem remains, then try setting the memory frequency to DDR2 800. There will be a lot more stresses on the memory controller on the motherboard when all memory slots are filled; to compensate for these stresses, memory controller will need to run these modules at a slower speed.
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