• Competitor rules

    Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.

***The Official Core i5 Overclocking Thread***

i got 4gb ram so i use the 3072mb setting, cant use more memory due to os overheads and if linpak is set to use too much memory i get out of memory messages and disk paging taking place so the test is not effective enough.

if you have more then 4gb ram then the test becomes more efficient at finding instabilities.
 
59411974.png


Somehow the prime95 start date has disappeared although I launched it along with RealTemp, that is showing 10hr30min of running.
 
if you scroll up you will see that i posted screens of prime run for 73 hours and 28mins with no errors, then linx ran for 1 hour 13 mins and errored out.

also when running linx its best to have no other apps running, i closed all my apps so only linx was running, no cpu-z no temp monitoring software. that way the load on the cpu is always maximum.
 
The load on the CPU is always maxed out when stressing with ibt/Linx. I've run ibt for 2 or 3 hours without problems already, both on 4 and 1 core. Not really bothered with 72h testing tbh but I will do ibt for several hours tomorrow. Next stage would be 3.8Ghz on 4 cores.
 
My settings:

20x200
mem multi x8
qpi ratio x32
pci clock 100
ram 9 9 9 24 (XMP disabled mem setup manual with performance enhance 'turbo')

vcore 1.375 in BIOS (CPUZ shows 1.36 at idle and 1.392 load with LLC on level 2)
qpi vtt 1.3
pch 1.1
cpu pll 1.9
ram 1.66

cpu and pci clock drive both 900mv

Needs high volts to clock, but perfectly stable, never crashes and temps are fine.
 
I overclocked my i5 to 3.4ghz by upping the multiplier to 21 and leaving everything else as the 1600mhz x.m.p

My system keeps crashing on windows media player, snes emulator, games.

any tips?
 
Occooler said:
I overclocked my i5 to 3.4ghz by upping the multiplier to 21 and leaving everything else as the 1600mhz x.m.p

My system keeps crashing on windows media player, snes emulator, games.

any tips?
Click to expand...

Do not use XMP profiles if you're planning to overclock.

Set the timings manually in BIOS, read them up in CPU-Z if you have to (under SPD tab). Also remember about the voltages, set DRAM voltage to 1.65V if it's the rated voltage. Set memory to 5x/10x.

Start overclocking by setting 160 base clock and leave CPU multi on 20/auto. Turn on all power saving options such as C-states/C1E/EIST and make sure you have Turbo turned on. This way you'll get 21x multi on 3/4 cores and 24x on 1/2 cores (3.36GHz/3.8GHz respectively).

If the system is unstable, up the Vcore to 1.25V manually. Keep upping this voltage by small increments of 0.015V or so until you find your stable overclock.

Test overclock using prime95 blend/small FFTs for few hours (8hrs+ for final stability check), make sure to test both 1/2 cores load and 4 cores load due to different multipliers. IntelBurnTest for quick stability checks, use all memory available and at least 25 runs.
 
Mr Krugga said:
Do not use XMP profiles if you're planning to overclock.

Set the timings manually in BIOS, read them up in CPU-Z if you have to (under SPD tab). Also remember about the voltages, set DRAM voltage to 1.65V if it's the rated voltage. Set memory to 5x/10x.

Start overclocking by setting 160 base clock and leave CPU multi on 20/auto. Turn on all power saving options such as C-states/C1E/EIST and make sure you have Turbo turned on. This way you'll get 21x multi on 3/4 cores and 24x on 1/2 cores (3.36GHz/3.8GHz respectively).

If the system is unstable, up the Vcore to 1.25V manually. Keep upping this voltage by small increments of 0.015V or so until you find your stable overclock.

Test overclock using prime95 blend/small FFTs for few hours (8hrs+ for final stability check), make sure to test both 1/2 cores load and 4 cores load due to different multipliers. IntelBurnTest for quick stability checks, use all memory available and at least 25 runs.
Click to expand...

Thanks for the advice, I tried someone else's 4ghz settings but it was up to 79c straight away, bit too hot.

I'll methodically find the highest clock and safe temps...
 
Do it step by step, you'll at least learn how your CPU behaves and will potentially expand your knowledge of overclocking these and any CPUs. If you need help tweaking, let me know, I'm glad to help if possible.
 
I haven't ran prime95 only HyperPi but after 6 hours I'm confident it's stable. I'm sure I could get more but I'm pretty happy with it at the moment so it stays as it is.
 
same as you man, i using 167 bclock with the 21x multi for 4 cores and for 2 or 1 threads it goes to 24x using turbo to hit the 4ghz. vcore is 1.3500. end result is 3 day linpak stable. guess i will stick to this now, atleast i can play crysis wars properly now. before with the dual core opteron it was just way too slow.
 
I'm curious if we got the same batches somehow :p

Afaik I wasn't purchasing the CPU from OcUK but cannot remember properly. I'm not even sure if Turbo on two cores kicks in in any games, some don't use 4 cores properly but multithread somehow with low CPU usage?
 
turbo mode deffo works, i ran games in windowd mode with realtemp doing monitoring and i saw the clock speed turbo up to 4ghz and stay there for the duration of the entire game.

as for the cpu batch i remember when i searched for my batch number nothing came up on forums or the net. its a new one.
batch number: L004B681
 
You must log in or register to reply here.
Back
Top Bottom