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DDR and SDRAM on the same board. Good or bad idea?

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Stryfe

Member
Joined
Mar 4, 2002
Location
Winnipeg, Manitoba, Canada
I've got a ECS K7S5A. The board supports both DDR and SDRAM, it has two slots for each. You can use both types of RAM but can never have more than two SIMMS used at a time. So how odes this work? Would the board just use up the DDR first and then use the SD second? So far I've just got 256mb SDRAM, but I'm planning on getting 256mb of DDR sooner or later. When I do should I just remove the SD or leave it in? I'll leave it in as long as it's not going to be slowing things down. I don't often have much of a need for more than 256mb's, but it'd be nice to have for the occasional time I do.
 

RainMaQer

3D God
Joined
Nov 20, 2001
Location
Fort Wayne, Indiana
Taken from the product info page of manufactuer:

2 DDR DIMM sockets and 2 DIMM sockets support (can not be used simultaneously)

This means that it is a VERY bad idea to use DDR and SD at the same time. Probably wont post... but could ruin something... never know ;)

Don't do it bro... not worth the risk :)
 
OP
Stryfe

Stryfe

Member
Joined
Mar 4, 2002
Location
Winnipeg, Manitoba, Canada
Ahh I just reread the manual on this. The wording they use can be easily mistaken:

"The mainboard has two 168-pin/184-pin DIMM sockets for SDRAM/DDR (Double Data Rat) SDRAM system memory modules. You must install at least one memory module in order to use the mainboard, and you can only use one of the both SDRAM and DDR SDRAM at the same time."

I read that as you can use one of each type.
 

Mictlan

Senior OC BOINC User
Joined
Apr 17, 2001
Location
Mexico City, Mexico
From what I have read using SDRAM and DDRAM at the same time is not really posible with a normal chipset. You will be needing two memory controller to work with and array like that.

I would suggest that you forego such a complex array and use one or the other kind of memory. Besides the price of SDRAM is equal to the DDRAM nowadays, so buying SDRAM now is not a good investing.....