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Refining my overclocked i5-2500k

i5-2500k overclock

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#1 Perscitus

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Posted 02 December 2017 - 05:37 PM

I have overclocked my CPU using the following bios settings:

CPU Multiplier x45
BCLK: 100mhz
Short and Long duration: 230/200.
core current limit 200
Vcore: OFFSET mode +0.020Volts
Load line calibration: LEVEL 4
Spread spectrum disabled
SpeedStep: on

Everything else left alone, mostly on auto.

 

I ran a torture test with Prime95 and found that I have to stop it due to temperature issues. What can I do to reduce my top end temperatures? Is there anything that seems off, or too much voltage?


One must be a fox in order to recognize traps, and a lion to frighten off wolves.
-Niccolò Machiavelli
 

>> Intel Core i5-2500K Sandy Bridge @ 4.4GHz <-> COOLER MASTER Hyper 212 EVO RR-212E-20PK-R1

>> ASRock Z68 Extreme3 Gen3 <-> G.SKILL Sniper Series (4 x 4GB) 240-Pin DDR3 1866 (PC3 14900)

>> EVGA GeForce GTX1060 6GB SSC 06G-P4-6267-KR @ stock(1607/1835)

>> Samsung 840 EVO MZ-7TE250BW 2.5" 250GB SATA 6Gb/s (SSD) <-> Samsung 850 EVO 500GB 2.5-Inch SATA III Internal SSD <-> Seagate Barracuda 7200.10 ST3320620AS 320GB

>> Antec Nine Hundred <-> Silverstone SST-ST75ZF 750W <-> Samsung SH-S183L


#2 SpikeSoprano

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Posted 02 December 2017 - 06:32 PM

Some chips run hotter than others, you may need a better cooler to get to 4.5, also prime will make the cpu run a lot hotter than any game will .

CPU>I7 2600K  -MB>GIGABYTE  Z68X-UD3H-B3-MEM>16 GB KINGSTON 1600 MHZ-COOLER> HYPER 212 EVO

VIDEO>ZOTAC GTX 660 2 GB-SSD>VERTEX 3 120 GB-HD>WD 500+WD 250 GB- G500 MOUSE
CASE>ROSEWILL CHALLENGER W/4 120MM FANS-PSU> 650 WATT-MONITOR>24 INCH BENQ


#3 ccokeman

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Posted 02 December 2017 - 07:29 PM

While the Hyper 212 is a good cooler it is still limited when you start pushing high levels of vcore through your silicon. 

 

Go from offset mode to manually set the vcore and start low and see what you get. If it reboots you have to push up the vcore a little bit more. Adjust and test until you get the right vcore/temperature/stability curve you can. As you are thermally limited then push the speeds to what your cooler can handle or buy a more substantial cooling system.  

 

Just for comparisons sake my Core i7 6950X is thermally limited even with a well built custom water cooling setup using 2 radiators and a d5 pump.   


Processor Intel Core I7 4690X  4.3Ghz
Memory G.Skill RipJaws  32GB 2400Mhz
Motherboard ASUS Rampage IV BE
Graphics  GTX TitanX x2
Power Corsair AX 1200,
Monitor ASUS PQ321Q
Cooling Liquid by comittee

Storage  OCZ RevoDrive 350 480GB  Seagate 8TB
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#4 cchalogamer

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Posted 02 December 2017 - 07:45 PM

First off what temps are you seeing with your current settings? 

 

Second as mentioned before me Prime 95 is an unrealistic workload for gaming temp comparison and even over the top for things like rendering.  A CPU hitting 80C in prime may run 55C max gaming.  

 

TCase max for your CPU is around 72C (that's the max temp measured at the IHS) and is different than the now more commonly listed TJunction (max temp measured at the die) meaning that you should be safe to 80C+ readings by most software that's looking at the reported core temps (For example HWMonitor) 

 

If you still need to drop temps looking at realistic loads the only option short of a better cooler is less voltage and as a byproduct to maintain stability maybe less speed.  


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i7-5930K/GA-X99-UD4/32GB G.Skill/512GB Intel 600p/512GB Crucial M550/480GB ADATA SP550/5TB/GTX 1080 Ti/Rosewill Capstone 1000-M/Rosewill Blackhawk (main rig)

i7-4930K/GA-X79-UP4/32GB G.Skill & Team Vulcan Mixed/240GB Seagate 600 SSD/4 x 1TB/GeForce 315/Rosewill Capstone 750/Corsair Carbide 200R (VM Server)

i7-6820HK/Aorus X7 v6/16GB G.Skill/512GB Samsung SM951/1TB/GTX 1070/230w AC Adapter/94.24Wh Battery (Gaming/Fun Laptop)

i7-7500U/Razer Blade Stealth/16GB/512GB Samsung SM951/45w USB-C AC Adapter/53.6Wh Battery (Work Laptop)

i7-4770K/GA-Z87X-UD5H/16GB Kingston/240GB Seagate 600 SSD/2TB/GTX 1070/Rosewill Capstone 750-M/Rosewill Blackhawk (the wife took this one)

i5-3570K/GA-Z77X-UD5H/24GB  ADATA/120GB Crucial M500 SSD/3 x 5TB/2 x 3TB/2TB/Antec BP550/Bookshelf (server)

i5-4590/ASRock H97M-ITX-ac/8GB G.Skill/240GB OCZ ARC 100 SSD/750GB/GTX 1070/Rosewill RG630/Silverstone SG13B (HTPC)


#5 Perscitus

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Posted 03 December 2017 - 07:31 AM

I left it overnight, and my temps from the idle are lower-mid 30s(°C). So that is fine. I'll play some games with the HWmonitor on and see where they peak out. With Prime I stopped it after it touched 90°C and it took about 7 min to reach that temp. As mentioned, I doubt anything I do in my daily use will get the temps near the Prime95 values. My usage is pretty much gaming, browsing, and MS Office crap.

 

Regardless, I will reduce my offset a little and see if I can stay stable.


One must be a fox in order to recognize traps, and a lion to frighten off wolves.
-Niccolò Machiavelli
 

>> Intel Core i5-2500K Sandy Bridge @ 4.4GHz <-> COOLER MASTER Hyper 212 EVO RR-212E-20PK-R1

>> ASRock Z68 Extreme3 Gen3 <-> G.SKILL Sniper Series (4 x 4GB) 240-Pin DDR3 1866 (PC3 14900)

>> EVGA GeForce GTX1060 6GB SSC 06G-P4-6267-KR @ stock(1607/1835)

>> Samsung 840 EVO MZ-7TE250BW 2.5" 250GB SATA 6Gb/s (SSD) <-> Samsung 850 EVO 500GB 2.5-Inch SATA III Internal SSD <-> Seagate Barracuda 7200.10 ST3320620AS 320GB

>> Antec Nine Hundred <-> Silverstone SST-ST75ZF 750W <-> Samsung SH-S183L


#6 ccokeman

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Posted 03 December 2017 - 10:37 AM

While Prime 95 is an unrealistic workload it does impart the worst case scenario for your CPU/Memory/Motherboard combination. I used a 24 hour run as my benchmark for stability for my usage scenario. You can use other programs to simulate this loading in a shorter time window but the long term heat soak of the components mounted in the case provide a more telling story.  I have had memory failures and cpu related failures at the pre and post 24 hour mark. Every small error will add up in time and you will end up with things not working or corrupted files. Test stability at the worst possible case so you know you wont have issues. We all have our own opinions on overclocking and what defines stability.  I promote worst case scenario testing so you know for sure. Others are happy with good enough at light loading. I got tired of reloading the OS every couple weeks and is the reason I test the way I do.  Like I said each of us has opinions so rather than take just one or two gather a larger consensus to make your decisions. 


Processor Intel Core I7 4690X  4.3Ghz
Memory G.Skill RipJaws  32GB 2400Mhz
Motherboard ASUS Rampage IV BE
Graphics  GTX TitanX x2
Power Corsair AX 1200,
Monitor ASUS PQ321Q
Cooling Liquid by comittee

Storage  OCZ RevoDrive 350 480GB  Seagate 8TB
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#7 Perscitus

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Posted 03 December 2017 - 10:53 PM

I ran some games and such during the days and peaked out at 79°C. Should be OK, I'll keep an eye on it and if needed drop the voltage and/multiplier. My video card will provide the more noticeable difference when I am gaming, so I'm not worried about dialing back the OC a bit.


One must be a fox in order to recognize traps, and a lion to frighten off wolves.
-Niccolò Machiavelli
 

>> Intel Core i5-2500K Sandy Bridge @ 4.4GHz <-> COOLER MASTER Hyper 212 EVO RR-212E-20PK-R1

>> ASRock Z68 Extreme3 Gen3 <-> G.SKILL Sniper Series (4 x 4GB) 240-Pin DDR3 1866 (PC3 14900)

>> EVGA GeForce GTX1060 6GB SSC 06G-P4-6267-KR @ stock(1607/1835)

>> Samsung 840 EVO MZ-7TE250BW 2.5" 250GB SATA 6Gb/s (SSD) <-> Samsung 850 EVO 500GB 2.5-Inch SATA III Internal SSD <-> Seagate Barracuda 7200.10 ST3320620AS 320GB

>> Antec Nine Hundred <-> Silverstone SST-ST75ZF 750W <-> Samsung SH-S183L


#8 cchalogamer

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Posted 04 December 2017 - 07:32 AM

 I have had memory failures and cpu related failures at the pre and post 24 hour mark.

Before I say anything "negative" I want to be clear, there is no right or wrong way to OC and stability test. If you're not killing parts and you're happy with the results that's the important part, but that one sentence is why I stopped bothering with "24hr stress tests" a long time ago.  I still fully support you doing just that if it makes you feel better about the overclock.

 

Personally I've found running a few benchmarks and looping them a few times testing what I just OCed finds me more issues than any 24hr run of prime/furmark in way less time.  However much like running 24hrs of Prime95 can yield a "stable" system that crashes on the same test 20 mins later sometimes you'll find an issue elsewhere.  A certain game will crash for seemingly no reason or you get a BSOD, first step then for me is to dial back/eliminate the OC to see if that was the cause and go from there.  

 

I've just found running something like the Heaven benchmark on loop for a few runs finds more GPU issues for me than furmark in less time and oddly enough Cinebench's multi threaded back to back and then just encoding a video or two finds issues with a similar consistency for me in far less time than longer tests.

 

With all that out of the way I would be reasonably happy with the OC you have now.  Based on current temps I would personally focus on trying to dial back to voltage if you can get it stable with less and get a bit lower temps, but if not you should still be fine where you are.


1zdcjtx.png

i7-5930K/GA-X99-UD4/32GB G.Skill/512GB Intel 600p/512GB Crucial M550/480GB ADATA SP550/5TB/GTX 1080 Ti/Rosewill Capstone 1000-M/Rosewill Blackhawk (main rig)

i7-4930K/GA-X79-UP4/32GB G.Skill & Team Vulcan Mixed/240GB Seagate 600 SSD/4 x 1TB/GeForce 315/Rosewill Capstone 750/Corsair Carbide 200R (VM Server)

i7-6820HK/Aorus X7 v6/16GB G.Skill/512GB Samsung SM951/1TB/GTX 1070/230w AC Adapter/94.24Wh Battery (Gaming/Fun Laptop)

i7-7500U/Razer Blade Stealth/16GB/512GB Samsung SM951/45w USB-C AC Adapter/53.6Wh Battery (Work Laptop)

i7-4770K/GA-Z87X-UD5H/16GB Kingston/240GB Seagate 600 SSD/2TB/GTX 1070/Rosewill Capstone 750-M/Rosewill Blackhawk (the wife took this one)

i5-3570K/GA-Z77X-UD5H/24GB  ADATA/120GB Crucial M500 SSD/3 x 5TB/2 x 3TB/2TB/Antec BP550/Bookshelf (server)

i5-4590/ASRock H97M-ITX-ac/8GB G.Skill/240GB OCZ ARC 100 SSD/750GB/GTX 1070/Rosewill RG630/Silverstone SG13B (HTPC)


#9 Perscitus

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Posted 04 December 2017 - 08:09 AM

Tonight I'll probably reduce the offset to +0.010V and see what temps I get from Prime95 torture.. and if they are OK, I'll give it an hour on Prime to see if any crash occurs. If there is an issue, I think I'll just start dialing back the multiplier. As mentioned, the difference it makes for my frames in game are minimal.. Shame I'm stuck at work an unable to test now......


One must be a fox in order to recognize traps, and a lion to frighten off wolves.
-Niccolò Machiavelli
 

>> Intel Core i5-2500K Sandy Bridge @ 4.4GHz <-> COOLER MASTER Hyper 212 EVO RR-212E-20PK-R1

>> ASRock Z68 Extreme3 Gen3 <-> G.SKILL Sniper Series (4 x 4GB) 240-Pin DDR3 1866 (PC3 14900)

>> EVGA GeForce GTX1060 6GB SSC 06G-P4-6267-KR @ stock(1607/1835)

>> Samsung 840 EVO MZ-7TE250BW 2.5" 250GB SATA 6Gb/s (SSD) <-> Samsung 850 EVO 500GB 2.5-Inch SATA III Internal SSD <-> Seagate Barracuda 7200.10 ST3320620AS 320GB

>> Antec Nine Hundred <-> Silverstone SST-ST75ZF 750W <-> Samsung SH-S183L


#10 Perscitus

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Posted 06 December 2017 - 01:24 PM

Ended up taking it down to 4.4 and set the offset to +0.015V. Didn't have a lot of time to much yesterday since I had to install the GTX 1060. Everything is playing nice and smooth, so I might take the lazy approach and leave it as is.. but I'll continue to monitor my temps and such to see what my normal use pushes them to. 


One must be a fox in order to recognize traps, and a lion to frighten off wolves.
-Niccolò Machiavelli
 

>> Intel Core i5-2500K Sandy Bridge @ 4.4GHz <-> COOLER MASTER Hyper 212 EVO RR-212E-20PK-R1

>> ASRock Z68 Extreme3 Gen3 <-> G.SKILL Sniper Series (4 x 4GB) 240-Pin DDR3 1866 (PC3 14900)

>> EVGA GeForce GTX1060 6GB SSC 06G-P4-6267-KR @ stock(1607/1835)

>> Samsung 840 EVO MZ-7TE250BW 2.5" 250GB SATA 6Gb/s (SSD) <-> Samsung 850 EVO 500GB 2.5-Inch SATA III Internal SSD <-> Seagate Barracuda 7200.10 ST3320620AS 320GB

>> Antec Nine Hundred <-> Silverstone SST-ST75ZF 750W <-> Samsung SH-S183L


#11 WarWeeny

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Posted 06 December 2017 - 02:30 PM

If you really are concerned about temps, just put it at 4GHz.

This should be easily doable with lower voltages and you will not notice it in games.


You can get the weeny out of the war, but you cannot get the war out of the weeny

Rest in peace my good old gtx 480, you deserved it

 

Thinks he has a weeny worthy of war.

 






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