Corsair TWINX512-3200LL XMS3200 512MB 2-3-2-6 2x184 DIMM Black
http://corsairmemory.com/corsair/products/specs/twinx512-3200ll.pdf

Price: $100
~3 year old.
0 problems.
broke the cpu and motherboard and bought a new computer so just want to get
rid of this.

from
http://corsairmemory.com/corsair/xms.html

"Matched pairs for today's hot dual channel motherboards.
TWINX modules are tested in pairs, in dual channel motherboards,
at very aggressive latency settings for optimum performance
and compatibility."