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i5 2500K voltage levels jumping around

post #1 of 5
Thread Starter 
Hey guys, my first post here!

I recently overclocked my 2500k to 4ghz at 1.184-1.192v. In the BIOS I set it to 1.195 to match the voltage before the overclock. (at stock settings it would jump between 1.184 and 1.192 as well)

When idling however my voltage readings change from time to time. Most of the time It's at 1.192v, but sometimes it'll drop to 1.184 or increase to 1.200 (and today even 1.208!) Did I do something wrong here? Is there some way to counter this? I've got the LLC set to high.

Oh wait a minute, scratch the most of the time part. I've been closely monitoring it now and it changes several times per minute.
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post #2 of 5
LLC to ultra high should help balance it out a little more. But really it's nothing to worry about. Keep in mind CPU-Z isn't 100% accurate, you have to use a multimeter if you want to get the exact voltage anyway. I strongly recommend overclocking via offset voltage as well, change that in the bios instead of a fixed voltage.
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Alura :)
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CPUMotherboardGraphicsRAM
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Hard DriveCoolingOSPower
5 x 8TB Seagate IronWolf Pro in ZF2 Array CoolerMaster Hyper 212 Evo FreeNAS 11 EVGA SuperNOVA G2 550W Gold 
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CPUMotherboardGraphicsRAM
i7 4790k Asus Z97 Pro WIFI-AC Sapphire Nitro Radeon R9 Fury Tri-X OC+  G.Skill 4 x 8GB F3-2133C9D-16GXH 
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2 x Intel 730 480GB SSD in RAID 0 Asus DRW-24B1ST/BLK/B/AS Noctua NH-D15 Winblows 10 Pro x64 
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post #3 of 5
mine does that too
i think normal
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post #4 of 5
Thread Starter 
Quote:
Originally Posted by Dopamin3 View Post
LLC to ultra high should help balance it out a little more. But really it's nothing to worry about. Keep in mind CPU-Z isn't 100% accurate, you have to use a multimeter if you want to get the exact voltage anyway. I strongly recommend overclocking via offset voltage as well, change that in the bios instead of a fixed voltage.
Alrighty, I used manual voltage because I didn't fully understand how offset works. I'll google that for a bit now. Thanks!
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post #5 of 5
Quote:
Originally Posted by Multipen View Post
Alrighty, I used manual voltage because I didn't fully understand how offset works. I'll google that for a bit now. Thanks!
To do it: Set it to offset mode, but don't add or subtract any voltage. Boot into Windows, load up prime95 and see what the voltage applied is. Examples: it gives you 1.3v but you want 1.35v, then add +.05v in the bios. Conversely if it gave you 1.4v then you would want to do -.05v. That's how you do it (and actually it's in mV in the bios, but you get the idea). Also I believe the base voltage changes depending on the multiplier so make sure you are on the multiplier you want to use to accurately change the vcore.
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Hard DriveCoolingOSPower
5 x 8TB Seagate IronWolf Pro in ZF2 Array CoolerMaster Hyper 212 Evo FreeNAS 11 EVGA SuperNOVA G2 550W Gold 
Case
Fractal Design Node 804 
CPUMotherboardGraphicsRAM
i7 4790k Asus Z97 Pro WIFI-AC Sapphire Nitro Radeon R9 Fury Tri-X OC+  G.Skill 4 x 8GB F3-2133C9D-16GXH 
Hard DriveOptical DriveCoolingOS
2 x Intel 730 480GB SSD in RAID 0 Asus DRW-24B1ST/BLK/B/AS Noctua NH-D15 Winblows 10 Pro x64 
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Pixio PX277 Logitech G510 Seasonic SS-660XP2 Fractal Design R4 Blackout 
MouseMouse Pad
Logitech G500 Xtrac Ripper 
CPUMotherboardGraphicsRAM
i5 2500k Asus P8Z68-V Pro MSI R7970 Lightning BE 2 x 4GB G.Skill Ripjaws 2133mhz 
Hard DriveOptical DriveCoolingOS
Mushkin Enhanced Chronos 240GB and WD Black 1TB Asus DRW-24B1ST Cooler Master Hyper 212 EVO Windows 7 Ultimate x64 
MonitorPowerCase
Hannspree 24 inch Thermaltake Tough Power TP-750P 750W Gold Cooler Master HAF 932 
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FreeNAS
(9 items)
 
Beast
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Alura :)
(11 items)
 
CPUMotherboardGraphicsRAM
Intel Xeon E3-1245 v5 SuperMicro X11SSM-F-O C236 Integrated 2 x 16GB Kingston ValueRAM ECC KVR21E15D8/16 
Hard DriveCoolingOSPower
5 x 8TB Seagate IronWolf Pro in ZF2 Array CoolerMaster Hyper 212 Evo FreeNAS 11 EVGA SuperNOVA G2 550W Gold 
Case
Fractal Design Node 804 
CPUMotherboardGraphicsRAM
i7 4790k Asus Z97 Pro WIFI-AC Sapphire Nitro Radeon R9 Fury Tri-X OC+  G.Skill 4 x 8GB F3-2133C9D-16GXH 
Hard DriveOptical DriveCoolingOS
2 x Intel 730 480GB SSD in RAID 0 Asus DRW-24B1ST/BLK/B/AS Noctua NH-D15 Winblows 10 Pro x64 
MonitorKeyboardPowerCase
Pixio PX277 Logitech G510 Seasonic SS-660XP2 Fractal Design R4 Blackout 
MouseMouse Pad
Logitech G500 Xtrac Ripper 
CPUMotherboardGraphicsRAM
i5 2500k Asus P8Z68-V Pro MSI R7970 Lightning BE 2 x 4GB G.Skill Ripjaws 2133mhz 
Hard DriveOptical DriveCoolingOS
Mushkin Enhanced Chronos 240GB and WD Black 1TB Asus DRW-24B1ST Cooler Master Hyper 212 EVO Windows 7 Ultimate x64 
MonitorPowerCase
Hannspree 24 inch Thermaltake Tough Power TP-750P 750W Gold Cooler Master HAF 932 
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