TwinX1024RE-3200LL features Corsair’s Plug-n-Frag SPD so the modules boot at advanced 2-3-2-6 latency timings with no tweaking. The TwinX1024R-3200C2 boots up at JEDEC standard latency values, and is tested and verified to operate at aggressive 2-3-3-7 settings. As part of the popular XMS family, all new parts come clad in black or platinum (PT) heatspreaders for more efficient heat dissipation. blockquote>
Corsair announces memory for AMD Athlon64 FX

Corsair also announced new registered PC3200 memory modules designed for usage with the AMD Athlon64 FX processors :
TwinX1024R-3200C2 – matched pair of 512MB, registered DDR400, CAS2 modules
TwinX1024RE-3200LL – matched pair of 512MB, registered DDR400, low-latency modules with ECC