x16 architecture; how do you know?

[precipitate8]

My motherboard is not compatible with x16 DIMMs. When shopping for RAM, how can I tell if a module is x16 or not? I can always find clockspeed, CAS, even bandwidth, but never the architecture type (even on the product manufacture web page). The motherboard I'm using: Intel 975XBX Revison #5. Thanks for the read.

 

[precipitate8]

No takers ? If it helps, what I'm trying to do is put 8 gigs of RAM in my system. I tried putting 4 gigs of pqi in a while back (2 gigs actually works fine, but no more than two; tested all sticks and they all worked) but after much back and forth with intel, they told me my RAM was x16 architecture which was not a memory type supported by the board. Intel has a few 2 gig sticks on their "tested" list, but they are either non-ecc or are brands I don't really trust (I will probably oc the ram some). If I could just figure out which modules were x16, that would really open my options up. If anyone has any suggestions....

 

[treefrog07]

You might check the website(s) for for the brand(s) you would be comfortable having. You could contact the techs by email or in a forum, depending on the mfr.

from the Intel site for D975XBX2: http://www.intel.com/support/motherboards/desktop/d975xbx2/sb/CS-026616.htm
your specs:
* 1.8 V and 1.9 V DDR2 SDRAM DIMMs
* Unbuffered, single-sided or double-sided DIMMs with the following restriction: Double-sided DIMMs with x16 organization are not supported.
* 8 GB maximum total system memory
* Minimum total system memory: 128 MB
* ECC DIMMs and Non-ECC DIMMs
* Serial Presence Detect
* DDR2 800, DDR2 667, and DDR2 533 MHz SDRAM DIMMs

The techs should be able to tell the model numbers that meet those specs.
Good luck