Mixed Paired RAM

sist_si · 8 Jan 2009 at 15:16

Hi guys,
I have just bought and fitted some Corsair 2 x 1 gig 3200C2PT CL2 RAM from MM. Its in and works well. I also have 2 x 512MB Geil DDR400 Value Paired RAM too which I was going to use to make my comp up to 3GB but it doesn't seem to like it....it doesn't boot.

I don't know much about RAM but should I be able to do this?

VFR_KID · 8 Jan 2009 at 15:26

I have never done this myself, but, as far as im aware it can be done, however im possative you are supposed to evenly match it. i now start to think iff you do you are supposed to put it in a specific order starting with smallest. but ive never done it so may be talking tripe

sist_si · 8 Jan 2009 at 15:34

i'm using the DFI Lanparty UT nF4 SLI-D mobo by the way. It's using slot 2 and 4 for the RAM at the mo and I tried putting the 2x512's in slot 1 and 3.
I did also try it the other way round by no joy

miniyazz · 8 Jan 2009 at 23:18

I've never had a problem mixing RAMs myself but that has mostly been on newer boards, and I know there can be issues. Have you tried using just the 2x512 to see if the mobo likes them by themselves?

sist_si · 9 Jan 2009 at 08:46

yea, originally the 2x512MB sticks were in there but I bought the extra 2x1GB sticks to upgrade. Each works on there own but together it doesn't seem to like it.

Linx · 9 Jan 2009 at 10:07

Are they difference speeds? It should work still, but will show the lowest speed.
Yeah, does it freeze at boot (loading screen)?

sist_si · 9 Jan 2009 at 10:14

Yea, they are diff. speeds.
I actually have 2 pairs of 2x512's but one is knackered. Trying both though, one doesn't post and the other gives a bios (checksum i think) error and says there is no keyboard attached.

siege2 · 9 Jan 2009 at 10:30

I have done what u did with slightly diff sizes, mine with my 1gb two off, added two off 2gb sticks, but I made sure the timings off the newer sticks were off identical timings and make ie corsair, now on 6gb with vista 64.

hope this helps.