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i5-2500K overclocking results - Page 4

post #31 of 38
Quote:
Originally Posted by kevindd992002 View Post

Another question. Let's say I consider 1.5V as my max "Safe" Vcore. If I set the Vcore in UEFI to 1.55V and let's assume that I have a Vdrop of 0.05V and a Vdroop of 0.1V, the Vcore at idle in Win7 would be 1.5V (1.55-0.05) and at load it would be 1.4V (1.5-0.1). Is there any single time that the Vcore would overshoot to 1.55V making me pass the "safe" mark?
Maybe. On my Gigabyte Z68 board, when I load up a single core (using P95) I get .050 overvolt vs my load voltage with 4 cores loaded. Check yours and see, just select single core P95 blend and run it, watch your vcore and see what it does.
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post #32 of 38
Thread Starter 
Quote:
Originally Posted by TwoCables View Post
If that were true, then the voltage wouldn't skyrocket when it's set to Auto.

All we need to know is what VID you see in Real Temp when the CPU is under load. Or apparently if you are lucky like me, then you don't need to have the CPU under load to see the actual VID in Real Temp.

There's nothing else we need to know.




If LLC is set to Ultra High, then basically. I can even simplify it:

  1. Overclock only using Manual voltage.
  2. When you are "finished" overclocking, switch over to Offset. By "finished", I mean when you are not going to overclock any higher.
  3. Enjoy it.

#2 assumes knowing how to set the Offset without too much guesswork.
Well, I'm guessing that VID is the stock voltage that's constant. When you set Offset to Auto VCore skyrockets and not VID. They're just different terms which are misused often, IMO. But I may be wrong because I'm reading lots of mixed reviews about this in Google.

Or could it be that for a certain multi, there is an associated VID (this is the one shown in Real Temp) and the one shown in CPUZ is actually the VCore?

Which is more recommended to use between Real Temp and Core Temp?

Quote:
Originally Posted by keto View Post
Maybe. On my Gigabyte Z68 board, when I load up a single core (using P95) I get .050 overvolt vs my load voltage with 4 cores loaded. Check yours and see, just select single core P95 blend and run it, watch your vcore and see what it does.
Thanks for the info. I'll try and see about this. If that is the case then should it be safe to assume that I should never set my VCore in UEFI greater than 1.5V if I consider that the "safe mark"?
post #33 of 38
Quote:
Originally Posted by kevindd992002 View Post
Well, I'm guessing that VID is the stock voltage that's constant. When you set Offset to Auto VCore skyrockets and not VID. They're just different terms which are misused often, IMO. But I may be wrong because I'm reading lots of mixed reviews about this in Google.

Or could it be that for a certain multi, there is an associated VID (this is the one shown in Real Temp) and the one shown in CPUZ is actually the VCore?

Which is more recommended to use between Real Temp and Core Temp?



Thanks for the info. I'll try and see about this. If that is the case then should it be safe to assume that I should never set my VCore in UEFI greater than 1.5V if I consider that the "safe mark"?
The VID is not a current voltage of any kind whatsoever. So, use CPU-Z to see your current core voltage.

The only thing the VID is useful for is knowing what Offset to use.

Therefore, just switch to a Manual voltage for now and then switch to an Offset at a later date when you are done overclocking. Continuing to use Offset it just making things way too complicated right now.
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post #34 of 38
Thread Starter 
Quote:
Originally Posted by TwoCables View Post
The VID is not a current voltage of any kind whatsoever. So, use CPU-Z to see your current core voltage.

The only thing the VID is useful for is knowing what Offset to use.

Therefore, just switch to a Manual voltage for now and then switch to an Offset at a later date when you are done overclocking. Continuing to use Offset it just making things way too complicated right now.
Ok, I'll try Manual first. So for manual just up the multi, stress test with Prime95 while monitoring temps, and when I find it stable I jump to the next multi until I need to increase VCore by a few notches?
post #35 of 38
Quote:
Originally Posted by kevindd992002 View Post
Ok, I'll try Manual first. So for manual just up the multi, stress test with Prime95 while monitoring temps, and when I find it stable I jump to the next multi until I need to increase VCore by a few notches?
That's one way to do it.

It's basically all the same except it doesn't have the added complication of using Offset. This way you will mess with Offset one time, and one time only: at the very end.

This is how most people are recommending doing it right now, this is the way I did it (except I did it this way unintentionally), so this is the way I should be recommending it.
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i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
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post #36 of 38
What's the advantage of using offset over manual at the end?
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post #37 of 38
Quote:
Originally Posted by Kai- View Post
What's the advantage of using offset over manual at the end?
The core voltage becomes allowed to dynamically adjust to the CPU load. It's kinda like setting it free.
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250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
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CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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post #38 of 38
i'd trade real humans for OCing chip, pretty girls even better
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