Memory Question

[gmoreno]

I had 128 PC100 SDRAM in my computer and I bought 2 128mb sims. For some reason to my benefit I got 1 x 128mb sim and 1 x 256mb sim.

Now I show that I have 390MB Ram shouldnt I have ...500MB? Is their certain order I have to install my memory?

[GhostDawg]

Yep, it should be about 512mb or so. Depends on what's the maximum amount of ram it can handle.

What kind of mobo is it?

[gmoreno]

Asus P5A

[gmoreno]

It looks like 768MB is it's max.

[GhostDawg]

I found this on http://www.crucial.com website:

Max EDO: 384MB
Max Unbuffered SDR SDRAM: 768MB

Check their site for more info!

[Kernel_Killer]

SIMMS? Don't you mean DIMM's? ;D

Looks like one of your 128MB chips are conflicting. Probably your first one since it is most likely a different brand then the others, or the motherboard is trying to run it at speeds it can't handle to match up with the new RAM. Thus resulting in you only having 393216KB (384MB) of RAM instead of the 512MB you should show during the POST.

[gmoreno]

[quote author=Kernel_Killer link=board=3;threadid=6087;start=0#57857 date=1042621115]
SIMMS? Don't you mean DIMM's? ;D

Looks like one of your 128MB chips are conflicting. Probably your first one since it is most likely a different brand then the others, or the motherboard is trying to run it at speeds it can't handle to match up with the new RAM. Thus resulting in you only having 393216KB (384MB) of RAM instead of the 512MB you should show during the POST.
[/quote]
I am not a memory expert at all. So they could be dimms... So you think my old mem is the prob? Because it is sdram not edo so my mobo should support it.

[Kernel_Killer]

You might want to try each 128MB chip by itself, and see what happens. If they work, also try them in the sockets independently to see if you have a bad dimm socket. Also, Check the BIOS updates for that board and see if they had a problem with going over 384MB. And yet another thing to check is to see if the new chips are PC133, and not PC100. If they are PC133, and the mobo supports that, it might by trying to push the PC100 at 133MHz, and failing.

[Schotty]

[quote author=gmoreno link=board=3;threadid=6087;start=0#57840 date=1042610277]
I had 128 PC100 SDRAM in my computer and I bought 2 128mb sims. For some reason to my benefit I got 1 x 128mb sim and 1 x 256mb sim.

Now I show that I have 390MB Ram shouldnt I have ...500MB? Is their certain order I have to install my memory?
[/quote]

Umm ... you started with 128, bought 2 more 128 dimms ... that is 384 MB (or 393216KB) makes sense. Are you really sure that the one is 256MB, not just 128?

[Kernel_Killer]

Crap. Thanx for pointing that out Schotty. :P

*Kernel_Killer opens his eyes

What says that it is a 256MB chip and not a 128MB chip like you ordered? The sticker doesn't always do justice. The PinxBandwidthxCasLatency sometimes provides false identification.