I currently have one 256 MB RAM DDR Memeory and I want to upgrade.

What are my possibilities?

The fastest DDR you can use on the board is PC2100 and you can use up to three gigabytes of it.

It worked with PC3200 512MB samsung generics underclocked to 2100. Be sure you updated your bios first.

You can pop in PC3200 and it'll work fine, but it will only run at 266mhz fsb. I run two 512 meg sticks of PC3200 for 1 gig. Also this board supports 2 gigs of DDR memory, I read it it runs a bit flakey with over 1.5 gig of DDR memory, don't know if this is true. It will support 3 gigs of SDR memory(PC100/PC133).

I have 2gig DDR memory cards KVR266X72RC25L/1g 2.5v why do these not work in my A7A266 mother board?

quote maroan

I have 2gig DDR memory cards KVR266X72RC25L/1g 2.5v why do these not work in my A7A266 mother board?

I am cannot get a straight answer as to what I should be using for an upgrade for a ASUS mother board A7A266. I have bought 2 1gig KVR266X72RC25L/1g 2.5v which do not work in my computer, can anyone tell me what I should be using?

vhrock are you sure that it will work whit PC 3200. Because I can't find anywhere PC 2100.

I'm positive that PC3200 will run in the A7A266. It will just clock down to 266mhz and the fastest CAS Latency timings. I still run my A7A266 in one of my backup rigs with the same two Crucial 512meg PC3200 sticks(non ECC) in it. Never had a problem. I'm running BIOS 1013.01 on it. I wouldn't even bother with ECC ram unless you're running a server, that's just my own opinion. If that's the case buy a more up to date motherboard.

If I recall correctly this is the Crucial PC3200 ram I bought. I haven't opened the case in ages so i'm going on memory.

http://www.crucial.com/store/mpartspecs.asp?mtbpoid=811F6837A5CA7304

Mine can run at CL 2-2-2-6 without a problem, in fact they automatically went to those timings in the BIOS if I recall correctly. This is because they're not running at the full 400mhz they're designed to run at in this board they're running at 266mhz.

If you want to see all of the memory that can run in the A7A266 check this link out:


http://www.crucial.com/store/listparts.aspx?model=A7A266

I happen to really like Crucial but you can buy what you want.










This message was edited by vhrock on Oct 21 2006.

I have tried 2 - 1 GB chips (Crucial - said they were compatible)and they will not work together but will work individually. The computer does not read any memory nor boot up with both chips installed. Works fine with one chip. Any suggestions or similar experience?

I have exactly the same problem with this board (rev 1.03). It will boot fine with two 512MB chips, or with a single 1GB chip, but it will not boot with any combination of memory over 1GB total. I was searching for any way to work around the problem when I came across this post so I thought I'd let you know that you're not alone.