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DragonTamer1

Core voltage

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Posted · Original PosterOP

I have a Xeon 1650 running at 4.7GHz and CPU-Z is saying that it is only being fed 1.36V, however when I look in CPUID HWMonitor the motherboard is reading CPU VCore as 1.47 and CPU VID as 1.366. Which of these is the actual voltage that my CPU is receiving? In the BIOS the setting should not be feeding the CPU more than 1.37V except on startup where it is allowed to go up to 1.45.


Intel Xeon 1650 V0 (4.5GHz @1.36V), MSI X79A-GD45 Plus, 32GB of Crucial Balistix 1600, x2 XFX GTR RX 480 (@ 1340 MHz), Silverstone Redline (black) RL05BB-W, Crucial BX300 240GB SSD, Seagate Barracuda 500GB 7200RPM, WD Blue 1TB 7200 RPM, Seagate 2TB SSHD, SeaSonic X850, x3 Acer H236HL, be quiet! Dark Rock 3, Logitech K120, Tecknet "Gaming" mouse, Creative Inspire T2900, Creative Wireless HS-1200 headset, Windows 10 Pro 64 bit
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I would trust CPUID more than CPU-Z as it's distinguishing between VCore and VID, but there have been mentions of it being occasionally incorrect years ago. It may still be true, but I'm not following overclocking nearly as much anymore. If you want a second opinion, check out HwInfo64.

http://www.overclock.net/t/665362/vid-voltage-identification-explained

 

That doesn't seem out of the ordinary, however, as the VCore exponentially increases with increased clock, but I think you may have accidentally increased core voltage higher than what you intended. 

 

I saw an E5-1620 running at 5GHz stable at 1.456v running cinebench, and it's the same series, just with 4 cores, so when you add the 2 additional cores, with nearly the same frequency, it's not out of the realm of expectation. 

 


COMPUTER: SPIRIT OF XEON  |  CPU: INTEL Xeon E5-2680 C1 Stepping |  Motherboard: Intel Server Board S2600CP2 Dual LGA 2011  | GPU: ASUS DirectCU ii r9 290x (OC 1130/5400) | Cooler: CoolerMaster Hyper 212 Evo |  PSU: Butterfly Labs Kilowatt Gold | HDD: 12 500GB HDDs 4x3 RAID 50 w/ 2 240GB SSDs

 

 

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Posted · Original PosterOP

So I had set an offset voltage of +0.6V in the BIOS to allow for more dynamic voltages when the processor is under different loads. In the BIOS it only gives the current voltage at the time, not the current maximum. I was reading the 1.258V as that was the max the CPU was getting.

 

I have since set it to 1.377 and managed to squeeze another 100MHz out of the CPU across its scale.


Intel Xeon 1650 V0 (4.5GHz @1.36V), MSI X79A-GD45 Plus, 32GB of Crucial Balistix 1600, x2 XFX GTR RX 480 (@ 1340 MHz), Silverstone Redline (black) RL05BB-W, Crucial BX300 240GB SSD, Seagate Barracuda 500GB 7200RPM, WD Blue 1TB 7200 RPM, Seagate 2TB SSHD, SeaSonic X850, x3 Acer H236HL, be quiet! Dark Rock 3, Logitech K120, Tecknet "Gaming" mouse, Creative Inspire T2900, Creative Wireless HS-1200 headset, Windows 10 Pro 64 bit
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7 minutes ago, DragonTamer1 said:

So I had set an offset voltage of +0.6V in the BIOS to allow for more dynamic voltages when the processor is under different loads. In the BIOS it only gives the current voltage at the time, not the current maximum. I was reading the 1.258V as that was the max the CPU was getting.

 

I have since set it to 1.377 and managed to squeeze another 100MHz out of the CPU across its scale.

Awesome 😀


CPU: Intel Core i5-3570 with BeQuiet Dark Rock Slim // RAM: Kingston HyperX Blu 16GB DDR3 1600mhz CL9 // GPU: Gigabyte Gaming RX 580 4GB// Motherboard: Gigabyte Ga-B75m-D3H Rev 1.1 // PSU: Seasonic G550 Gold 80+ // Storage: 2 X 1TB Western Digital Blue | 128 GB Mushkin SSD | Asus DVD/CD optical drive // Monitor: Samsung S22D300 21.5" 1080p 60Hz 5ms // Peripherals: Logitech MK270 | Linksys AC1200 USB wifi | Kingston HyperX Cloud Core headset 

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