I'm running my 8K5a2+ at 10x200 right now with a mere 1.725V on my new $50 TBREDB from Newegg.
AXDA1700DUT3C
JIUCB 0250MPMW
Gotta love the 512mb PC3200 cas2 RAM from Corsair too. Hehe this was a nice jump from my XP1600 before

.
The funny thing is that I haven't even tried to push this chip at all. So sure it isn't as good as the "A" stepping chips, for $50, this was an awesome deal.
-Kev