For a memory comparison we are in the middle of working on, we had picked up a few sticks of extra memory for further comparative values. Of the sticks being tested in this upcoming article is the Mushkin Pro Series DDR2 (ECC Registered).We had two sticks of it each boasting a 512MB capacity with DDR2-533 speeds with 4-4-4 timings. At this time, the memory was used in conjunction with Tyan's Tiger i7520SD. We will not be delivering an independent review on this memory, however, I will say that thus far that Mushkin memory has proved to be quite reliable. The ICs on this Mushkin Pro DDR2-533 RAM were labeled SEC607ZC05 K41510830C.