Both my sticks are running fine. UTT BH-5:

PSU: OCZ Powerstream 520ADJ
MOBO: DFI Lanparty UT nForce3 250Gb
Slots: the 250Gb only has yellow slots, but I'm running in slots 1 and 3.
Rail: 3.3v
Volts: 2.9v (no active cooling yet)
Speed: 220MHz 1.5-2-2-5 1T
24/7 rig
Rams age: about 4 months
Ram Model: G. Skill GH sticks.