Question about ASUS A8N-SLI Premium Motherboard
I have 4x512 sticks of corsair value select. In pairs of 2, they both work fine and the BIOS recognizes that there is 1024 ram available. However, when I use all 4 the BIOS recognizes only 512 megs are available instead of 2gigs.
Insert a pair of memory so you again can see a total memory of 1024GB. Check the slots you have them inserted in. It should be DIMM A-1 & B-1. (Correct)? Remove both & insert the second pair. Use A-1 & B-1 again. Check total memory reported by bios. If you see anything less than 1024GB, that set of memory has an issue. Continue to leave in that set of memory. Go to this link & download memtest86 to a floppy disk & test the memory. You'll find the download section just under the three screen shots.
Each set of dimm's should be placed like so. One matched pair in dimm A-1 & B-1. Second set insert into dimm A-2 & B-2. The bios should see the total as 2GB. Run memtest only while using one set of matched 2x512 memory at a time. If there is a problem with the memory memtest86 will find it.
Though the information should fix you're issue, (or catch some bad memory).
It wouldn't hurt to check if a bios upgrade will help also.
Click on this link & check you're bios version against Asus updates. Please only update if you are sure the update will help.
Posted on Jun 17, 2008
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Posted on Jan 02, 2017
Tips for a great answer:
have you installed the right ram always try to use the same brand name and types of ram some motherboards will not use multiple types of ram together (be compatible)
IE: corsair ddr3 low density or high density and always place the larger ram module closest the CPU central processing unit
if you're not sure if a module is right for your system, use the Crucial Memory Advisor tool for a list of guaranteed compatible modules.
first you will need to select the manufacturer from a drop down list then select your product line from a drop down list then select the model then click find it will take you directly to compatible ram also you will have an option to scan your system
you should always ask for a guarantee on the compatibility before making any purchase and try to buy for working pairs if possible
hope this helps
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