RAM issue

[RVD]

I just bought a new 1 gb RAM chip to replace my old 512mb one.

I replaced it, because i thought it would be better then to have 2 completely different chips. Am i right?

[vellu]

You could atleat try to use both at the same time. There really isn't any grey area there. Either they work together or not (run a memory diagnostic program like memtest86 to know for sure).

[RVD]

I tried, but it wouldn't even start up normally.

it restarted itself twice, before saying ' windows couldn't be start properly. This could be caused by a change in the software or hardware.'... that was the last time i put something old next to something new..

[ImJ]

well tbh, read your 512mb ram memory, if its a DDR2 ram, you must buy a DDR2 Ram and not a DDR3, that might be the problem

[PSZeTa]

That couldn't be the problem, as a DDR2 stick is physically different from a DDR one. I don't think he's stupid enough to jam a DDR2 stick onto the mobo which requires quite some strength, and then wonder why it doesn't work.

Sometimes 2 sticks just refuse to work together if they aren't similar. I guess that's your problem. Have you checked the timings to see if one isn't running faster than it should, because the other one can?

[RVD]

i'm not that much of a fool to jam in 2 different cards into my mobo....

allright, these are my cards:

Old: Samsung 512mb DDR SDRAM 166 mhz
New: Corsair 1024mb DDR SDRAM 400mhz

and i couldn't check it since it refused to start up..
Anyways, i keep wondering why i didnt buy a new one earlier... it's a lot smoother and faster now.

[Carcrazy]

Wow that's a BIG speed difference... that's probably why. If you want to run two cards, you need to get another DDR400. Or either just get like a DDR333 and over-clock it to 400 speeds. That's what I've done with mine. I got a DDR333 256MB for free, so I over-clocked it to my 1GB DDR400's speeds.

[Jmac-]

I'll assume you meant 266 MHz and not 166 MHz because 166 MHz DDR doesn't exist ...

Anyways, are you sure your motherboard supports 1 GB memory modules ? Does your motherboard support PC-3200 (DDR 400) memory ?