Hmmm, I have 2x1GB Supertalent T800UX2GC5 with silver HSes. Week 21, Year 2007. I have them on Asus P5B vanilla.

Very bad sticks, won't go 4-4-4-8 at all, despite 2.4V and low frequency of 667MHz.
Max stable clock is 850MHz with 1.8V and default timings, increasing of voltage doesn't bring anything at all. At 900MHz it won't even boot.

I have E2160 CPU, so luckily I don't need high freq chips, but I hoped for 800MHz and 4-4-4-8 with ~2V.