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Calling all running a 3930K with 2133 MHz RAM

post #1 of 5
Thread Starter 
What is your IMC voltage set at? I just installed my new DDR3-2133 1.5 volt RAM. All I did was enable XMP and everything is working great. However, in the BIOS, the stock IMC voltage is reported at 0.8xx volts. When I am in Windows and load HWiNFO64, it reports the IMC voltage as 1.001 volts. The IMC voltage option is set on "Auto" in the BIOS. Did the motherboard automatically bump-up the IMC voltage for the higher speed 2133 MHz RAM? I've noticed my CPU temps have increased about 3-4 C.
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Intel Core i7-3930K GIGABYTE GA-X79-UD3 EVGA GeForce GTX 980 Ti Classified 16 GB Corsair Dominator Platinium DDR3 2133 MHz 
Hard DriveHard DriveOptical DriveCooling
Crucial m4 256 GB Western Digital Caviar Black 2 TB Pioneer BDR-206DBK Corsair Hydro Series H100 
CoolingOSMonitorKeyboard
2 x Scythe GentleTyphoon 1850 rpm fans for H100 Microsoft Windows 10 Pro 64-bit Samsung SyncMaster S23A700D Microsoft SideWinder X4 
PowerCaseMouseMouse Pad
Corsair Professional Series Gold AX850 Corsair Obsidian Series 650D Logitech G9x SteelSeries QcK mini 
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post #2 of 5
Yes , that is normal. On AUTO, the motherboard will raise IMC Voltage as necessary to support the DRAM. Higher quality motherboards like ones specifically for extreme overclocking will be much better for this, meaning they can AUTO supply sufficient Voltage. But up to a certain amount, the user must manually input a value for full stability and to have a smaller range of fluctuation for reliability.

Since you know roughly how much the IMC needs for DDR3-2133, you can manually input a fixed value of 1.00V, or leave to AUTO and allow it to change frequently.

Cheers
post #3 of 5
Thread Starter 
Thanks.

Is 1.001 volts a safe voltage for the IMC? Hope it won't start degrading the CPU quicker. Is it also normal for CPU temps to go up slightly with increased IMC voltage?
My desktop
(18 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-3930K GIGABYTE GA-X79-UD3 EVGA GeForce GTX 980 Ti Classified 16 GB Corsair Dominator Platinium DDR3 2133 MHz 
Hard DriveHard DriveOptical DriveCooling
Crucial m4 256 GB Western Digital Caviar Black 2 TB Pioneer BDR-206DBK Corsair Hydro Series H100 
CoolingOSMonitorKeyboard
2 x Scythe GentleTyphoon 1850 rpm fans for H100 Microsoft Windows 10 Pro 64-bit Samsung SyncMaster S23A700D Microsoft SideWinder X4 
PowerCaseMouseMouse Pad
Corsair Professional Series Gold AX850 Corsair Obsidian Series 650D Logitech G9x SteelSeries QcK mini 
AudioAudio
Creative Sound Blaster X-Fi Titanium HD 2 x JBL LSR305 + 1 x JBL LSR310S 
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My desktop
(18 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-3930K GIGABYTE GA-X79-UD3 EVGA GeForce GTX 980 Ti Classified 16 GB Corsair Dominator Platinium DDR3 2133 MHz 
Hard DriveHard DriveOptical DriveCooling
Crucial m4 256 GB Western Digital Caviar Black 2 TB Pioneer BDR-206DBK Corsair Hydro Series H100 
CoolingOSMonitorKeyboard
2 x Scythe GentleTyphoon 1850 rpm fans for H100 Microsoft Windows 10 Pro 64-bit Samsung SyncMaster S23A700D Microsoft SideWinder X4 
PowerCaseMouseMouse Pad
Corsair Professional Series Gold AX850 Corsair Obsidian Series 650D Logitech G9x SteelSeries QcK mini 
AudioAudio
Creative Sound Blaster X-Fi Titanium HD 2 x JBL LSR305 + 1 x JBL LSR310S 
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post #4 of 5
Yes, no problem at all. IMC is in the CPU, so temps will go up as you increase voltage. Increasing RAM frequency and capacity will both cause more load on the IMC, as a result more voltage. It is all perfectly fine, imagine 64GB DDR3-2400+ biggrin.gif

Cheers
post #5 of 5
Using a multimeter?
     
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CPUMotherboardGraphicsRAM
i7 970 @ 4.2GHz HT on Gigabyte UD7 Rev 2.0 EVGA GTX 1070 FE Elpida Hypers cl9.9.9.21 1T tRFC 60 @ 2K-MHz 
Hard DriveHard DriveCoolingOS
Samsung Evo 128Gb OCZ VertexLE 100Gb Megahalems  Windows 10 Pro 64 
MonitorKeyboardPowerCase
Asus VG248QE Corsair K70  EVGA Supernova T2 1000W Lian Li PC-A20 
MouseAudio
Sidewinder MX5 Creative Zx 
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