First time overclock - i5-2500K

wildest_jjk · 26 Dec 2015 at 17:37

Hey guys,

Wanted to try a bit of easy overclocking and have just followed the article below and wanted to know what you guys thought. I have pasted the settings that I have changed below and also the results of some testing so far. I just played GTA 5 for about 10 minutes as a start.

Thanks in advance for any help

http://www.bit-tech.net/hardware/cpus/2011/01/07/how-to-overclock-the-intel-core-i5-2500k/5

CPU ratio to 45
DRAM to 1,600MHz (no ratio option)
VDroop Control to Auto VDroop (only low or auto)
CPU VCore to 1.28V
CPU IO (VCCIO) was 1.17V
System Agent Voltage (VCCSA) set to 1.185V
DRAM Voltage was set to 1.6480V

Enabled Execute Disable Bit, Intel Virtualization Tech and C1E Support.
Disabled Limit CPUID Maximum, Power Technology and OverSpeed Protection.

Troezar · 26 Dec 2015 at 17:45

Looks very similar to mine. Seemed very east to get 4.5GHz out of them. Sure I could get more but so far not really had the need to.

Did you notice much difference with your OC?

zipp0r · 26 Dec 2015 at 20:54

mine needed no less than 1.32v @ full load to do 4.5
your bus speed is only 97, its supposed to be 99.9-100.1 default, your 4.5 might actually be only ~4.36 and ram 770mhz.
look for disable clock spread spectrum in the bios and/or manually set 100.1

Disco_P · 26 Dec 2015 at 23:58

Set the DRAM voltage to 1.5v as per your RAM's spec.

I'd also recommend using a stress tester tool to quickly verify the stability overclock. OCCT is my tool of choice for Sandy Bridge - just use linpack in AVX mode and leave it overnight.

wildest_jjk · 27 Dec 2015 at 00:38

Troezar said:
Looks very similar to mine. Seemed very east to get 4.5GHz out of them. Sure I could get more but so far not really had the need to.

Did you notice much difference with your OC?

So far it seems to be a lot quicker, just worried that I am frying my components lol!

zipp0r said:
mine needed no less than 1.32v @ full load to do 4.5
your bus speed is only 97, its supposed to be 99.9-100.1 default, your 4.5 might actually be only ~4.36 and ram 770mhz.
look for disable clock spread spectrum in the bios and/or manually set 100.1

I can't see anyway of increasing the bus speed. Nothing seems to happen when I change it. Are there other things that could be affecting it? I have posted my BIOS settings below.

Disco_P said:
Set the DRAM voltage to 1.5v as per your RAM's spec.

I'd also recommend using a stress tester tool to quickly verify the stability overclock. OCCT is my tool of choice for Sandy Bridge - just use linpack in AVX mode and leave it overnight.

Thanks for that I have changed it back to auto as it seems to just set it at 1.5V. Hopefully that's OK?

I will look at downloading that tool to run it overnight.

zipp0r · 27 Dec 2015 at 01:32

hmm seems its set ok at 10013 (100.13) and spread spectrum disabled. maybe just cpuz isnt reading it correctly

Disco_P · 27 Dec 2015 at 01:41

Looks good. Does having 10013 as the base frequency show at 100Mhz+ in CPU-Z?

wildest_jjk · 27 Dec 2015 at 01:56

Disco_P said:
Looks good. Does having 10013 as the base frequency show at 100Mhz+ in CPU-Z?

It's not really made any difference. That's why I think something else must be wrong still... Here is CPU-Z again with those settings:

Thanks again for the help guys

Disco_P · 27 Dec 2015 at 02:05

Has it always shown it as less than much less than 100 in CPU-Z?

I'd save your current OC settings then reset them and only change base frequency to 10100. Hopefully this will boot and you will be able run CPU-Z and see what it says.

On my MSI Z77 MPower if I set base to 10000, then CPU-Z would show 99.97 but 10006 would show 100.13 in CPU-Z.

wildest_jjk · 27 Dec 2015 at 09:34

Ok so I ran OCCT over night with what I think were the correct settings. However this is at the lower bus speed as I haven't quite sorted it yet. But it did make it through the night!

This was the result:

wildest_jjk · 27 Dec 2015 at 09:36

Disco_P said:
Has it always shown it as less than much less than 100 in CPU-Z?

I'd save your current OC settings then reset them and only change base frequency to 10100. Hopefully this will boot and you will be able run CPU-Z and see what it says.

On my MSI Z77 MPower if I set base to 10000, then CPU-Z would show 99.97 but 10006 would show 100.13 in CPU-Z.

Will give this a shot now, hopefully my previous results are OK though. This was the graph output from OCCT:

Disco_P · 27 Dec 2015 at 13:17

This BLCK issue is something I've not seen before to be honest so I am just guessing.

BTW you are aware that your overnight OCCT run was at stock. However the settings are correct.

wildest_jjk · 27 Dec 2015 at 13:40

Disco_P said:
This BLCK issue is something I've not seen before to be honest so I am just guessing.

BTW you are aware that your overnight OCCT run was at stock. However the settings are correct.

Thanks again for the help.

What do you mean at stock? I'm not really aware as I haven't used the software before. I have got a scan running now as well.

Also with regards to the BUS speed I have resolved that. It's basically to do with having the Hyper-V feature turned on in Windows. Ridiculous!

Disco_P · 27 Dec 2015 at 15:06

Hyper V? That's weird but at least it is sorted.

By at stock I mean it was running at 3.3Ghz rather than 4.5Ghz. You need to enable power technology under CPU features. Most of the settings that appear can be left at default though if you can take a picture that would be great. Then a speed step option should appear next to the turbo setting at the top of the main OC window. Enable it and you should get 4.5Ghz. I had the exact same issue with my Z77 mpower.

wildest_jjk · 27 Dec 2015 at 15:11

Disco_P said:
Hyper V? That's weird but at least it is sorted.

By at stock I mean it was running at 3.3Ghz rather than 4.5Ghz. You need to enable power technology under CPU features. Most of the settings that appear can be left at default though if you can take a picture that would be great. Then a speed step option should appear next to the turbo setting at the top of the main OC window. Enable it and you should get 4.5Ghz. I had the exact same issue with my Z77 mpower.

Thanks again for the help mate

Erm well the settings haven't really changed to the ones that I posted before. Are they any of these?

Disco_P · 27 Dec 2015 at 15:36

You need to enable power technology in the top screenshot. Then a load of other stuff will appear.

wildest_jjk · 27 Dec 2015 at 15:39

Ok so power technology is enabled (custom or energy efficient) and now these have appeared:

This also appeared on the OC page:

With the settings as they are the clock does read higher now on OCCT but does still drop etc to like 1.5GHz I think when idle etc. Is that normal? Do I need to change any of the settings I've highlighted?

Thanks again

Disco_P · 27 Dec 2015 at 16:14

That all looks perfect and working as intended. Now you just need to stress test at these settings.

Don't be surprised if it crashes. My chip requires somewhere about 1.34v for 4.5Ghz.

wildest_jjk · 27 Dec 2015 at 16:48

Disco_P said:
That all looks perfect and working as intended. Now you just need to stress test at these settings.

Don't be surprised if it crashes. My chip requires somewhere about 1.34v for 4.5Ghz.

Thanks mate

So I've tried running the test but within 5 minutes the temps seem to be getting pretty high:

Disco_P · 27 Dec 2015 at 18:31

There is not a lot you can do to bring down temps. Lower voltages or increase cooling ability.