yesterday I've got my used Cellshock DDR2 1000 CL5 ehich I bought for 15€ on eBay.

Here Some results:

testing system:
Intel C2D e6600
Gigabyte P35DS4
Cellshock DDR2 1000 CL5 2.3V ( MIcron D9GKX )
Jetway 8800 GT
Excelstor 80 GB Sata
Thermolab Baram

Validation @ 1200 CL 4-4-4-12 with 2,6V active Air cooling

Here the SuperPi32M Screenshot