jprahman :
That voltage is way too high. You need to go into your BIOS and lower it to something reasonable like 1.2v, immediately. Voltages over 1.35-1.4v is considered too high for routine use for a i7-920, and 1.6v is dangerous, if that value is correct.
Unfortunately, since you have a OEM machine I'm not sure how much the BIOS will allow you to adjust voltage settings.
1.656V can't be dangerous if my PC has been at this setting for over a year now, i've never had not a single issue. Plus there's gotta be some logical reason why HP would configure there PC's this way, it's gotta be right. Just boggles me that how is it that i'm getting the same temps as everyone else at this voltage that's running around 1.2V. I'm still using stock cooling that came with PC (heatsink with fan). Here's my PC...
Motherboard
Intel X58
CPU
i7 920 @ 2.67GHz
Memory
9.00 GB DDR3-SDRAM (1333MHz)
Hard Drive
Seagate ST31000528AS 1TB @ 7200 RPM
Video Card
GeForce GTX 260 1.75 GB
Power Supply (Crappy PSU I know...currently upgrading)
Delta Electronics DPS-460DB A 385W ATX Power Supply MAX OUTPUT 460W
+5 / 13A
+12Va / 16A
+12Vb / 15A
+12Vc / 8A
+3.3V / 17A
-12V / 0.8A
+5Vstb /2A
Monitor
ASUS VW266H 25.5" 2ms 1920 x 1200 (32-bit) (59 Hz)
Operating System
Win 7 Home Premium (64-bit)