Author Topic: RAM Question (Read 313 times)

Balsy · « **on:** November 20, 2007, 04:34:36 PM »

I have an A8n SLI Deluxe and recently bought 2 sticks of 1mb Corsair XMS to replace my 2 sticks of 512mb Corsair ram.

I have 2 dimms (blue and black) and they both can support paired memory sticks in Dual Channel.

Question:.

If I put the 2 1mb sticks in the "blue" set of dimms is this the best configuration?

Do I sacrifice speed if I also insert the 512mb pairs into the black slots?

Overall Question is:

Is 3mb in 2 paired dimms slower than 2mb in 1 pair of dimms?

Thanks,

Balsy

Tigger29 · « **Reply #1 on:** November 20, 2007, 04:52:24 PM »

I would put the two one gig chips in the blue slots, and the two 512 meg chips in the black slots.

Is the memory speed different between the two?

And do you know the exact model numbers of your ram?

Balsy · « **Reply #2 on:** November 20, 2007, 05:34:15 PM »

Quote

Originally posted by Tigger29
I would put the two one gig chips in the blue slots, and the two 512 meg chips in the black slots.

Is the memory speed different between the two?

And do you know the exact model numbers of your ram?

Corsair CMX512 - 3200XLPRO 400mhz

Corsair TwinX2048- 3200 C2PT G also 400 mhz

OOZ662 · « **Reply #3 on:** November 21, 2007, 02:32:17 AM »

GIGAbyte is 1024 MEGAbytes.

RAM will run as fast as the slowest stick. Since your "slowest stick" is the same speed as the other, there will be no slowdown and the obvious increase in total RAM.

Be sure to put matched pairs in the same colored slots so that they will run in full-speed Dual Channel mode.

Balsy · « **Reply #4 on:** November 21, 2007, 11:31:23 AM »

Quote

Originally posted by OOZ662
GIGAbyte is 1024 MEGAbytes.

RAM will run as fast as the slowest stick. Since your "slowest stick" is the same speed as the other, there will be no slowdown and the obvious increase in total RAM.

Be sure to put matched pairs in the same colored slots so that they will run in full-speed Dual Channel mode.

Alright, put the 2x512s back in and the computer only recognized those two sticks, and did not recognize the 2x1024s.

Both bios and windows told me I had 1meg of ram instead of 3megs..

Suggestions?

A8n Sli deluxe bios version 1004.

Kev367th · « **Reply #5 on:** November 21, 2007, 01:50:32 PM »

2 things to try -

1 - I'm pretty sure theres an later BIOS for that board.
2 With all 4 slots occupied try setting the memory command rate to 2T in the BIOS.

Make it 3 things

3) Swap the 1024s and 512s around.