~1.8v VCORE - is this a false reading?
Last year I switched the e3-1231v3 out of my desktop for a 4790k (Z97), and I've finally got around to buying a cheap server motherboard (Asus P9D-V) to upgrade my project DIY NAS to use the 1231v3.
However, during setup I noticed that BIOS was reporting a VCORE of around ~1.8v. So after checking temps and seeing they were in an expected range, I booted through to Linux and using lm-sensors I found it was also reporting around 1.8v. Using another computer, I threw a quick windows install on an old SSD and put HWMonitor, CPU-Z, and Cinebench R15 onto it. Interestingly, the motherboard voltage sensors in HWMonitor reported a VCORE ~1.8v, but the CPU section reported each core's VID at ~1.02v at idle and ~1.06-1.1v when running Cinebench R15. CPU-Z reports the core voltage identically to HWMonitor's VID.
I seem to remember Haswell having a 1.8v input voltage from the motherboard, before being regulated down to the actual core voltage. I'm inclined to believe that software is incorrectly reporting the CPU input voltage here as VCORE, while HWMonitor and CPU-Z are accurately showing the core voltage. It ran Memtest86+ for 16 hours (for a different reason) before I decided to turn it off and get confirmation of my suspicions.
I have attached some imagesshowing the figures.
So what do you think, is this just a misrepresented sensor reading?
In a topic about someone turning a working PIII-1ghz into a key chain: Quote: Originally Posted by Cryptedvick
my moms PC has a 667mhz P3 ... your keychain is faster :|