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[Info] - Intel 2500k/2600k Overclocking Tips - Page 109

post #1081 of 1151
I ran at 4.4ghz with 1.31 volts for a few years. I'm running 4.7 @ 1.41 volts for the past few months. I was messing with 4.9 @ 1.45 just now and really want 5.0 but just afraid of that voltage.

At this point I want to make this 2500k work a bit better as I'm bottlenecking my GTX 980 in a game that's very cpu limited. A friend with a 6600k @ 4.6 and GTX 980(overclocked the same speed) is getting 20-50% more fps than me with exactly the same settings. My gpu usage goes down into the 50's while his stays in the 80's at times. He's getting cpu limited too it seems but nowhere near as bad.
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post #1082 of 1151
a 2500k at 4.7ghz will not bottleneck any current single card. you always have to remember you are on pci-e2,o not pci-e3.0 and that will cause a loss of 2-3%...
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post #1083 of 1151
At 4.76(48x99.76) GHz I pass both 1344 and 1792 tests for 20 minutes but Blend test fails after half an hour.This happens with 1.452V under load and very high temperatures - they get 90 degrees in some passes.I also lowered the PLL to 1.65V which I think helped stability and now I am getting 101 BSOD code.But my temperatures are very high and I can't put more voltage.
I tried 47 multiplier but again the blend test failed after more than 90 minutes(don't know when exactly during the night) with 101 code with 1.416V under load with max temps aroud 86 degrees.
Looking at the table in the Sandy stable club topic I can see people with NH-D14 with a lot better results.For example:
Code:
xxsashixx    4800.0mhz       1.416v  18hrs   64-72-73-69     AIR - Noctua NH-D14     2500k
cre3d   4800.0mhz       1.424v  12hrs   77-83-85-79     AIR - Noctua NH-D14     2600k HT
According to that review by bit-tech Antec Kuhler 650 must not perform so worse against NH-D14.
I am thinking of getting Coollaboratory Liquid Pro instead of my old MX-2.
Also there is one guy selling almost new(worked about 2-3 hours only for testing) Noctua NH-U14S without the thernal paste for about 45-50 euro in my country.
Is it worth buying them?I am trying to figure out my maximum possible overclock or at least stability at 4.8GHz but I will be using it at the maximum achieved frequency at Auto voltage due to missing offset voltage from MSI boards.
Edited by Stiliyan - 10/19/15 at 5:50am
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WD Caviar Blue  Samsung 830  Sony-NEC optilarc ad7192S Antec Kuhler 650 
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post #1084 of 1151
Your temps sound very hot for 1.416 volts. I used 1.40-1.416 volts max @ 4.7 and 1.5 hours in prime it didnt go over 76 degrees with my cooler, but my house might be a bit cooler(66-69 degrees usually. I'm at 4.9 now with 1.434-1.464 volts. I saw it hit 81 in prime after 2 minutes and stopped it. I'm thinking about actually getting that NH-D14 cooler but not sure it's worth it. It won't go over 70 in gaming, but I don't know how stable it is right now. I'll just test stability doing my usual stuff.

But I tested 4.9 in 3dmark 11 and got 9019 physics score! Glad to break 9000.
http://www.3dmark.com/3dm11/10421635

Problem is in iRacing my GPU usage is extremely low even @ 4.9 ghz. I also overclocked memory to 1866 mhz. I did gain quite a few FPS from the memory and gpu overclock.


Edited by Rampage24 - 10/19/15 at 2:50pm
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post #1085 of 1151
I cleaned the heatsing, changed its position and put Gelid GC-2 thermal compound but got the same results.
Most of the time temps are aroud 72-73 degrees but at some tests they get to 84-85 degrees during 6 hours of prime95 v28.5 build 2 with 1.440V(1.424-1.432) core voltage, 1.65V PLL, 1.13V VCCIO.These days I will test the temps during games.


Something is wrong with my system.CM 212 must perform worse.
Edited by Stiliyan - 10/20/15 at 10:54am
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WD Caviar Blue  Samsung 830  Sony-NEC optilarc ad7192S Antec Kuhler 650 
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post #1086 of 1151
what is your ambient temp?
how old is your cooler?
is the air coming from the case or room that cools the rad?

theres a few more questions i'll ask later probably.
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post #1087 of 1151
Quote:
Originally Posted by pc-illiterate View Post

what is your ambient temp?
how old is your cooler?
is the air coming from the case or room that cools the rad?

theres a few more questions i'll ask later probably.
The cooler is 18 months old.The air is coming from the case and there is one more fan on the back of the heatsink which must pull the air but it's a case fan, not a cpu fan.The temperature in the room is about 20-25 degrees.
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WD Caviar Blue  Samsung 830  Sony-NEC optilarc ad7192S Antec Kuhler 650 
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WD Caviar Blue  Samsung 830  Sony-NEC optilarc ad7192S Antec Kuhler 650 
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post #1088 of 1151
higher ambient temp and warm case air for cooling. a 5*C range is huge for room temperature.

if you want to know when p95 failed, open its folder and find the results.txt. it will list the completed fft in order.
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w00t
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post #1089 of 1151
Quote:
Originally Posted by pc-illiterate View Post

higher ambient temp and warm case air for cooling. a 5*C range is huge for room temperature.

if you want to know when p95 failed, open its folder and find the results.txt. it will list the completed fft in order.
I didn't know that for p95.I don't know the exact temperature in the room.I don't think that this is the reason for the higher temps.I can take out the R9 290 and test but I don't expect big difference since it's idling.
Last month I cleaned the heatsink because it was seriously dusted.It is possible that the inside of the heatsink is clogged.
Edited by Stiliyan - 10/20/15 at 12:20pm
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CPUMotherboardGraphicsRAM
Intel Core i5 2500K MSI Z77 MPOWER ASUS Direct CU II R9 290 G.SKILL F3-12800CL8D-4GBECO 
Hard DriveHard DriveOptical DriveCooling
WD Caviar Blue  Samsung 830  Sony-NEC optilarc ad7192S Antec Kuhler 650 
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Windows 8.1 64 Phillips MWT1221T Cooler Master V850 Cooler Master Haf 922 
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Home PC
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CPUMotherboardGraphicsRAM
Intel Core i5 2500K MSI Z77 MPOWER ASUS Direct CU II R9 290 G.SKILL F3-12800CL8D-4GBECO 
Hard DriveHard DriveOptical DriveCooling
WD Caviar Blue  Samsung 830  Sony-NEC optilarc ad7192S Antec Kuhler 650 
OSMonitorPowerCase
Windows 8.1 64 Phillips MWT1221T Cooler Master V850 Cooler Master Haf 922 
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post #1090 of 1151
Ok, so I've been running my 2500k at 4.3 on 1.3v for 3 years for no issues and low temps. I've just upgraded my case and cooler so I'm now aiming to get to 4.7GHz so I can maybe get a few more years out of this chip. Hopefully this guide will help me get there! Any tips on moving on up? I'm treating this as a 'from scratch' OC and I'm using an Asus P8P67 Pro mobo.
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