I7 2600k with offset voltage need assistance - Overclock.net - An Overclocking Community

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I7 2600k with offset voltage need assistance

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post #1 of 79 (permalink) Old 04-02-2019, 03:29 PM - Thread Starter
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I7 2600k with offset voltage need assistance

Hi guy's,


I am new to the overclocking world and after reading all week long on many various guides i still have problem to understand the offset voltage setting in bios!


I am aiming at very reasonable 4.5 overclock and my sys specs are :
asus p8p67, I7 2600k,

deep cool gammax 400,

4x4 Gskills ripjaw 1600,

psu corsair tx 650,

gpu rtx 2060


I have the - and + sign but i don't know and i don't understand how to enter the value and i want to revert to default setting if something go wrong.


A am a little weary after my system was not able to boot and gave me 2 loud beep this morning after attempting a very mild 4.2 overclock at stock voltage, it's seem like it didn't like being put to sleep, luckily i was able to restart and access bios screen again and change the ratio back to 40.


Any assistance will be greatly appreciated thank!
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post #2 of 79 (permalink) Old 04-02-2019, 04:11 PM
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You can change the value using the plus and minus keys on your keyboard numpad. Usually it goes in increments of 0.05V. You'd probably be best off leaving the multiplier alone at first and experimenting with different settings to see what the actual voltage you get is. Start with just 0.05V and see what's reported for vcore in something like HWiNFO64 under load (run Cinebench or something), then up it incrementally until you get where you want. Generally 1.35V is a very safe and useful place to be for a 2600K, so adjust your offset until you get there under load, then start raising the multiplier and see how far you can get. You should almost certainly get to 4.5GHz at that voltage, at which point you can either try pushing further, or alternatively start backing the offset back down and see how low you can go. A little over 1.35V won't do any harm if you want to push it a little. Up to 1.4V (some even say 1.45V) isn't going to hurt anything if your temperatures are fine. You'll probably also want to set LLC in the BIOS so that your voltage doesn't drop too low under heavy load. The 'High' setting is good for Asus boards of that era.

Last edited by Aretak; 04-02-2019 at 04:17 PM.
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post #3 of 79 (permalink) Old 04-02-2019, 05:40 PM - Thread Starter
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Quote: Originally Posted by Aretak View Post
You can change the value using the plus and minus keys on your keyboard numpad. Usually it goes in increments of 0.05V. You'd probably be best off leaving the multiplier alone at first and experimenting with different settings to see what the actual voltage you get is. Start with just 0.05V and see what's reported for vcore in something like HWiNFO64 under load (run Cinebench or something), then up it incrementally until you get where you want. Generally 1.35V is a very safe and useful place to be for a 2600K, so adjust your offset until you get there under load, then start raising the multiplier and see how far you can get. You should almost certainly get to 4.5GHz at that voltage, at which point you can either try pushing further, or alternatively start backing the offset back down and see how low you can go. A little over 1.35V won't do any harm if you want to push it a little. Up to 1.4V (some even say 1.45V) isn't going to hurt anything if your temperatures are fine. You'll probably also want to set LLC in the BIOS so that your voltage doesn't drop too low under heavy load. The 'High' setting is good for Asus boards of that era.

Hi Aretak and thank for the quick reply but i am not sure exactly about how to properly read your instructions(English is not my native tongue) : Do you mean that i should put back the multiplier to auto so it revert to 3.4 default value and then just raising the offset + and checking in cpu-z the voltage i get and stress test the system only with higher offset voltage then raising multiplier to 4.5 and stress again to see if stable?
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post #4 of 79 (permalink) Old 04-02-2019, 05:55 PM
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There are tons of guides on this that will answer all of your more specific questions. Every motherboard is a little different and each brand uses slightly different terms for a few things so it's hard to tell you exactly what you need to do, but essentially all you need to do is increase the CPU multiplier and voltage. Something like a multiplier of 45 and a voltage of 1.35 - 1.4 should be fine as long as your CPU cooler can keep up. Try to keep the temps under 75c on that CPU. That's basically all there is to it.

You might find this helpful:

https://hardforum.com/threads/overcl...eluxe.1577816/

and this:

https://www.overclock.net/forum/5-in...king-tips.html

i7 7700kK @4.2ghz
16GB DDR4 3200mhz
GeForce 1080 Ti
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post #5 of 79 (permalink) Old 04-02-2019, 06:35 PM
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There's nothing harmful about the 2600K's temperatures exceeding 75°C. Saying "keep the temperatures under 75°C" always makes novice overclockers think that something bad will happen if it exceeds the stated temperature (like a dead CPU), in this case 75°C.


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i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage)
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post #6 of 79 (permalink) Old 04-02-2019, 06:46 PM
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I believe Tjmax is about 75c for sandy bridge. It's higher for newer intel CPUs. Been a while, could be wrong.

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post #7 of 79 (permalink) Old 04-02-2019, 07:17 PM
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Quote: Originally Posted by UltraMega View Post
I believe Tjmax is about 75c for sandy bridge. It's higher for newer intel CPUs. Been a while, could be wrong.
No, it's 98°C. No Intel CPU I know of has a Tj. Max that low. I think you might be confusing T-Case and Tj. Max.

Furthermore, the Tj. Max is simply where the CPU will throttle itself down to reduce the heat. So, even if it were to reach say, 95°C for a little bit, it's still nothing to worry about.


Loneliness is a good thing to share with someone.

The virtuous spirit has no need for thankful approval, owning a certain conviction that what has been done is right.
CPU
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage)
Motherboard
ASUS P8P67 EVO B3 (UEFI ver. 1850)
GPU
MSI GTX 1070 Ti Gaming Titanium 8G
RAM
G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9
Hard Drive
250 GB Samsung 840 EVO (OS)
Hard Drive
3 TB Toshiba P300 (D: drive)
Optical Drive
Samsung SH-S243N 24x DVD Burner
Optical Drive
Samsung SH-S203N 20X DVD Burner
Power Supply
Corsair RM550x
Cooling
Thermaltake Frio
Case
CM 690
Operating System
Windows 10 Home
Monitor
AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC)
Keyboard
Filco Majestouch 104-key Cherry MX Blues w/NKRO
Mouse
Intellimouse Optical (1.1A) 1000Hz polling rate
Mousepad
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Audio
X-Fi Titanium HD
Audio
Klipsch ProMedia 2.1 (with 16 AWG Monster Cable speaker wires)
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post #8 of 79 (permalink) Old 04-02-2019, 09:29 PM
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Quote: Originally Posted by TwoCables View Post
No, it's 98°C. No Intel CPU I know of has a Tj. Max that low. I think you might be confusing T-Case and Tj. Max.

Furthermore, the Tj. Max is simply where the CPU will throttle itself down to reduce the heat. So, even if it were to reach say, 95°C for a little bit, it's still nothing to worry about.
Hmm ok. Still, no real need to go over 75c on sandy bridge. I had a 2500K @4.7 and it maxed about 72c with a typical $50 air cooler. The good old days before delidding was a thing.

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post #9 of 79 (permalink) Old 04-02-2019, 09:34 PM
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Quote: Originally Posted by UltraMega View Post
Hmm ok. Still, no real need to go over 75c on sandy bridge. I had a 2500K @4.7 and it maxed about 72c with a typical $50 air cooler. The good old days before delidding was a thing.
Who said anything about a NEED? We're talking about whether it's safe, and it's safe. It's incorrect to say it's not safe to let the temperature go above 75. There's nothing more to what's being said.


Loneliness is a good thing to share with someone.

The virtuous spirit has no need for thankful approval, owning a certain conviction that what has been done is right.
CPU
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage)
Motherboard
ASUS P8P67 EVO B3 (UEFI ver. 1850)
GPU
MSI GTX 1070 Ti Gaming Titanium 8G
RAM
G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9
Hard Drive
250 GB Samsung 840 EVO (OS)
Hard Drive
3 TB Toshiba P300 (D: drive)
Optical Drive
Samsung SH-S243N 24x DVD Burner
Optical Drive
Samsung SH-S203N 20X DVD Burner
Power Supply
Corsair RM550x
Cooling
Thermaltake Frio
Case
CM 690
Operating System
Windows 10 Home
Monitor
AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC)
Keyboard
Filco Majestouch 104-key Cherry MX Blues w/NKRO
Mouse
Intellimouse Optical (1.1A) 1000Hz polling rate
Mousepad
It's just a mousepad
Audio
X-Fi Titanium HD
Audio
Klipsch ProMedia 2.1 (with 16 AWG Monster Cable speaker wires)
▲ hide details ▲
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post #10 of 79 (permalink) Old 04-02-2019, 10:18 PM - Thread Starter
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Quote: Originally Posted by UltraMega View Post
There are tons of guides on this that will answer all of your more specific questions. Every motherboard is a little different and each brand uses slightly different terms for a few things so it's hard to tell you exactly what you need to do, but essentially all you need to do is increase the CPU multiplier and voltage. Something like a multiplier of 45 and a voltage of 1.35 - 1.4 should be fine as long as your CPU cooler can keep up. Try to keep the temps under 75c on that CPU. That's basically all there is to it.

You might find this helpful:

https://hardforum.com/threads/overcl...eluxe.1577816/

and this:

https://www.overclock.net/forum/5-in...king-tips.html

Thank Ultra i will read both!
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