1.45v is Intel's absolute max rating, meant for extreme short term spikes only.
However, if you have a functional voffset and vdroop, the voltage you set in the BIOs should be the absolute max vid. Idle will be a bit lower, and load will probably be close to the long term safe rating of 1.3625v.
There is much debate about what voltages are safe, and even more variation from chip to chip, but if you want to be on the careful side, make sure your idle voltages do no go past 1.4v and your load volts stay at 1.36 or below.
I'm running a good bit higher, but I'm doing a degradation test, so I would not recommend these voltages to most.
Anyway, this is what I am getting, performance wise, at stable memory settings:
CPU
X3350 L813B823 (reflowed/lapped) @ 463x8, 1.28v |
Motherboard
ASUS P5Q Deluxe (cooling overhauled) |
Memory
2x1GiB Team D9GMH @ DDR-1158, 5-5-4-12, 2.25v |
Graphics Card
XFX 8800GTS (G92) 512MiB (783/1836/999) |
Hard Drive
2x ST3250410AS |
Sound Card
Razer Barracuda AC-1 (CMI8788) |
Power Supply
Enermax Modu82+ 625w |
Case
Antec P182 |
CPU cooling
Xigmatek HDT-S1283 + Scythe Slipstream 88CFM |
GPU cooling
Accelero S1 + 92mm Panaflo 57CFM |
OS
Windows XP SP3 (stripped down with n-lite) |
Monitor
ASUS VW222U (22" LCD) and Sony CPD-E540 (21" CRT) |