T60p and Kingston 2Rx8 PC2 6400S 666-12-E2

[ziemeck]

T60 operates DDR-2 RAM at 667MHz, at best - in dual channel mode. Can I fit in 800MHz memory module (Kingston 2Rx8 PC2 6400S 666-12-E2) without risk of instability? It will of course operate at 667MHz - if it will operate at all. How about operation, stability and possible dual channel mode issues? Any experiences? Or should I stick to KVR667D2S5/2G?