2600K can't move past 4.5G, high temps?

A

alkemyst

Limp Gawd
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Feb 20, 2005
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I have a Thermalright 120 Ultra with a pair of Gentle Typhoon D1225C12B5AP-15 120mm (Nidec D1225C12B5AP-53) (58.3 cfm / 28 dBA / 1850 rpm) in Push/Pull. For intake I have a 140mm Noctua NF-A14 FLX (1200 rpm, 19.2 dB/A, 68.0 cfm) and exhaust my Corsair CMPSU-750HX PSU and a Noctua NF-A8 PWM (2200 rpm, 17.7 dB/A, 32.68 cfm). I imagine the 750HX is about 40-50cfm.

My home is in S. Florida and my room temp is probably 78F usually. My baseline temps are 35C-40C for the CPU. Under Prime95 it will hit 98C on two of the cores and one stays as cool as 90C with the other around 94C.

Trying to go past 4.5G will give Prime errors (+.005 volt offset and +.004 volt Turbo), I have not tried to up voltage further due to the temps.

Despite the temps 4.5G was 24+ hours stable under Prime95 with only a couple throttles to 4.3G which I can accept.

However is there something wrong/something to correct? I know I could use a better case, but I will soon inherit a HAF 932 and a H100i as well (I had built my dad a 1200W 3770K 32GB rig a couple years ago and he just passed away :( ) so I don't want to invest in more gear I won't need.

I thought the TRUE would give better temps.

My full rig specs are at: http://30moons.com/pc_chiapet.php

Thanks
Å
 
Sorry to hear about your father. I think you won't realize much to gain after 4.5Ghz on SB anyway. The actual improvement in speed would be negligible. Also, 98C is too hot. 78F ambient room is a little warm but it sounds like your case ambient temps are much warmer. Also, have you double checked your TIM and application?
 
FlawleZ said:
Sorry to hear about your father. I think you won't realize much to gain after 4.5Ghz on SB anyway. The actual improvement in speed would be negligible. Also, 98C is too hot. 78F ambient room is a little warm but it sounds like your case ambient temps are much warmer. Also, have you double checked your TIM and application?
Click to expand...

I am using MX4 and I rechecked and it looked fine and my mounting of my TRUE seems solid. I am not sure if possibly it's misreporting temps or maybe something else. Day to day temps outside PRIME95 max out at around 60C.

I agree on not moving past 4.5G, even if I could get 5G out of this chip...the returns are minor for the added stress and risk of BSOD's.
 
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Whats your actual voltage at load as reported by CPU-z? Temps seem high, I remember getting 4.6 on my Sandy with a 212, or a very similar cooler, maxing temps out in the 80s. Some boards will overvolt your CPU by insane amounts if you leave some voltages on auto.
 
My HWMonitor screenshot.
 

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Your offsets seems insanely low for those high voltages. With SB/Ivy I had to have +.005 and +.1XX turbo to get to 1.40V.
 
Not all chips are alike, some will not be able to overclock as much, but I would think you could at least get to 4.7/4.8 with a 2600k. I would say double check your mounting and TIM, make sure you aren't using too much or too little, but it seems you did that. Also verify your mounting block is using the maximum surface area and is not too convex/concave. If I remember correctly, when I was using a TRUE, it had a slightly curved base and I did a little lapping on it to get a more even smooth surface.

After that, check the flow in your case, you want to make sure you are exhausting enough heat/air compared to what you are pulling in. It seems like you have a lot of air being pulled in, but not enough being pulled out of the case.

The highest I think I achieved on my SB was 4.9 on water. It was not particularly fully stable at that speed either. Right now I do have it on 4.6 stable at max 60c temps.
 
Somehow "Level 1" calibration got ticked on. I am probably over-volting. I am testing with Level 3 and temps are much much better. Testing stability now at different speeds.
 
To get 5.0 I had to push 1.42v on mine, I dropped it to 1.38v for 4.8 as it was just too much. I believe they’re “rated” for up to 1.52v if I remember intels documentation correctly, but I wouldnt go over 1.5. (I had a very good custom loop wc though so it never went above 60c)

Many recommend 1.35 or less for 24/7.

Edit: Found the old info: Intel's specification voltage range rate the 2500k/2600k from 0.5v-1.52v *see below source*
Page 80 7.10.1
Table 7-5

https://www.intel.com/content/dam/w...eets/2nd-gen-core-desktop-vol-1-datasheet.pdf
 
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I was running my 2500K at 1.42V water cooled to get 4.6GHz, keeping temps in the low 60s.
After a bios update that enabled LLC setup it was left on max by accident and pumped around 1.5V into it.
I was prime testing and after it would no longer do 4.6GHz.
It degraded over the next couple of years until it couldnt run faster than 4.3GHz.
It now runs in my Dads machine on air cooling at 4.1GHz.
fyi
 
4.7 wouldn't go without BSOD's. I tried upping turbo boost quite a bit, but it's not worth it IMHO. My temps under Prime95 at 4.5GHz are nice (my case temp is 35C at idle in this office), I don't get past low 80's
 

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I had a 2500k on a TRUE 120 - and I could never get that beyond 4.5 @ 1.4v ish - that said my temps topped out at like 75 degrees.
Now running 2700k @ 4.7 / 1.38V for 24/7 usage, but that is on a Arctic Freezer 240 AIO, never really breaks 65 degrees now.
 
slunge said:
I had a 2500k on a TRUE 120 - and I could never get that beyond 4.5 @ 1.4v ish - that said my temps topped out at like 75 degrees.
Now running 2700k @ 4.7 / 1.38V for 24/7 usage, but that is on a Arctic Freezer 240 AIO, never really breaks 65 degrees now.
Click to expand...

I debated whether to try something like a Noctua U14s to see if I can get a bit higher, but even if I could get 5G...I don't think it'd be worth it. I have 4.5G stable so I am happy until my next upgrade.
 
4.5 is usually the sweet spot for most 2600Ks. Diminishing returns are in play after that.

You do have all the realtime OS dynamics turned off right? No need for turbo or bouncy voltages/multis when pushing the OC. Lock everything in, RAM timings and all. Disable all the garbage, Virtualization, power managment and everything, you want all cores locked in from 0%-100% load.
 
I am not that gung-ho on just OC. I need some of the extras and want the others (I need virtualization and I want the power savings for throttling).
 
Nenu said:
I was running my 2500K at 1.42V water cooled to get 4.6GHz, keeping temps in the low 60s.
After a bios update that enabled LLC setup it was left on max by accident and pumped around 1.5V into it.
I was prime testing and after it would no longer do 4.6GHz.
It degraded over the next couple of years until it couldnt run faster than 4.3GHz.
It now runs in my Dads machine on air cooling at 4.1GHz.
fyi
Click to expand...

My 6700K won't overclock anymore either. Was steady @ 4.6GHz for a year but became unstable, so added more voltage for stability until it got the point where it wasn't even worth it anymore. Running too hot for not much gain. Sadly it runs at stock now. Meanwhile my AMD system has been steady overclocked for 5-6 years.
 
psy81 said:
My 6700K won't overclock anymore either. Was steady @ 4.6GHz for a year but became unstable, so added more voltage for stability until it got the point where it wasn't even worth it anymore. Running too hot for not much gain. Sadly it runs at stock now. Meanwhile my AMD system has been steady overclocked for 5-6 years.
Click to expand...
It is interesting how theres evidence of degradation in some chips while others there is not in seemingly the same environments and usage. I keep my 3970X @ 4.4Ghz as I found it was the best blend of speed and temps/power. It will do 4.7Ghz and I've benched it at that but it just runs way too hot.

Sitting right next to that system I have a Phenom II 980 BE that's been at 4.4Ghz rock solid for over 6 years.
 
I doubt anything over 4.4 wouldn't yeild noticeable improvements on SB anyways....
 
I am happy with 4.5G right now, my wife's laptop has a 8700K in it and I can see on paper how that would be a better chip than my 2600K, but I really don't do things where it'd excel right now.
 
horrorshow said:
I doubt anything over 4.4 wouldn't yeild noticeable improvements on SB anyways....
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SB it's so weak right now that it needs between 4.8 and 5 ghz to be able to properly handle 60fps minimums.. and that's even for 4c/8t yes we are right now in a time where older chips are needing a lot of speed to keep up with modern games.. or they become a stutter mess specially at 1080P. I remember a time when my 3770k at 4.8ghz bottlenecked severely my old 980ti on some high profile games heavy dependant on CPU it was even unable to achieve constant 60FPS minimums. .. so yes, there's a noticeable difference between 4.4ghz and 4.8ghz+ on older chips.
 
Araxie said:
SB it's so weak right now that it needs between 4.8 and 5 ghz to be able to properly handle 60fps minimums.. and that's even for 4c/8t yes we are right now in a time where older chips are needing a lot of speed to keep up with modern games.. or they become a stutter mess specially at 1080P. I remember a time when my 3770k at 4.8ghz bottlenecked severely my old 980ti on some high profile games heavy dependant on CPU it was even unable to achieve constant 60FPS minimums. .. so yes, there's a noticeable difference between 4.4ghz and 4.8ghz+ on older chips.
Click to expand...

Depends entirely on the game, GPU, settings, and resolution.
 
vick1000 said:
Depends entirely on the game, GPU, settings, and resolution.
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it will happen even on some ganes at 1440P... watch dogs 2, hitman absolution, crysis 3, shadow of mordor, shadow of war, mass effect andromeda, GTA V, dragon age inquisition, Battlefield Tittles (from 3 onwards), fallout 4, rise of the tomb raider, far cry 4, KCD, should I continue? with those tittles I have first hand experience with a large variety of systems and with anything older than haswell 4c/8t haswell at 4.5ghz will have serious issues even at 2560x1440 to sustain 60FPS, way worse at 1080P you may have acceptable "average" but average FPS means shit really, minimums it's what matter for a smooth gameplay and at less than 4.6ghz they fail to offer that experience.
 
Haswell is hardly better than Sandy Bridge clock for clock with games, and they both clock about the same on quality setups. The issue is not IF you can getter higher framrate, but rather IF the frames you are getting is sufficient for your personal preferences. I get 60fps constant on lots of DX9/10/11 titles with my setup, vsync enabled, sacrificing only AA on most, at 1080p.
 
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