Techniz.co.uk has posted a review on the GeIL 512MB DC UltraX-XL DDR400 CAS 1.5 memory

The GeIL UltraX-XL DDR400 CL1.5 Dual Channel DDR400 memory module is great memory; with the use of the legendary Winbond BH-5 hand picked RAM chips, it will meet the needs of most overclocker enthusiasts. This dual channel RAM kit is able to run tight timings of 1.5-2-2-5, which is the best overclocking memory module. Furthermore, with the voltage of 2.8V, it was able to hit 234 MHz which is equal to DDR468 with the tight timings of 2-2-2-5. With higher memory voltage at 3.5V, this pair of modules is able to read 265MHz which is equal to DDR530 at the timing of 2-2-2-5. That was an excellent result. Furthermore, this pair of RAM modules comes with the Platinum Copper Heatspreader which is very good for the heat dissipation.

GeIL 512MB DC UltraX-XL DDR400 CAS 1.5