Several months ago I ordered a 512mb stick of OCZ ddr product number OCZ 400512EL. When it arrived it had a Copper heatspreader on it. A couple of months later I ordered the exact same product from the exact same company but this time the memory has a Silver heatspreader. I have eventually determined that this stick of ram was infact a Platinum Edition product code OCZ 400512ELPE. The timings of the 2 sticks are

CL2-3-2-6 Copper

CL2-3-2-5 Platinum

As well as being a free upgrade this is definately the best memory I have ever owned.