Overclocking G3258 on H81M-E33

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Woody1999

Admirable
Hiya, just got a new system up and running for my grandad. I've used the G3258 with an MSI H81M-E33 board, using the Raijintek Aidos Black cooler. The cooler is roughly equivalent to a Hyper 212 Evo, in case anyone was wondering.

How should I attempt overclocking this chip? I'm hoping to hit 4.5GHz. So far, I've gone into the BIOS and set the multiplier to 40 and the core voltage to 1.050V, but it seems to have taken no effect. When I'm running a Prime95 blent test, the CPU still doesn't clock higher than 3200MHz.

So, have I done something wrong?

Woody
 
Well first things first which bios version are you using? Flashing the bios may be needed to get an actual overclock. Secondly... aim a lot lower, 4.5 Ghz is possible on a good motherboard and is likely out of reach for that h81 motherboard. Third... you are going to need a lot more voltage than that to get to 4.0Ghz 1.2v seems like a good place to start. see if you can post (load windows)without a second restart... when that happens it indicates your settings are simply incorrect.... too little or too much voltage.

So try 4.0Ghz with 1.2v and go up from there... multiplier I mean, not voltage.
Keep posting your results.
 
Wow, okay. I thought the Pentium could hit really high overclocks even on H81 boards. Oh well, I must be wrong.

I'm on BIOS 6.6 right now, is 6.7 needed to get the OC to work?

I've seen this on anandtech, although I assume they're using a high end test-bench:

http://images.anandtech.com/doci/8232/G3258%20OC%20Results.png

That's why I went for 1.050V for the 4.0GHz shot, but obviously it didn't kick in properly. I'll try to flash the BIOS now.

Woody
 
Okay, not going above 51C at 4GHz/1.2V. Although Prime95 is being a bit strange, it says it's running Pentium4 FFT length, which I've never seen before. Then again I've never used Haswell myself before - it says optimised for i3/i5/i7 architecture.

Woody
 
Trying 4.2GHz at 1.22V now, looks like I'm not going above 55C. Might have a lucky chip here! Must be really lucky, as I had a right balls up with the thermal compund...whoever it was at Raijintek that thought a tiny packet of thermal compound would be easier to apply than a syringe deserves a broken nose 😛

Woody
 
Okay, while 4.2GHz and 4.3GHz at 1.22V passed with flying colours, no matter what I tried I couldn't get her to boot at 4.4GHz. Oh well, maybe not as lucky as I originally suspected.

Going to leave it to stress test at 4.3 for a couple of hours tonight, so far haven't gone over 58C.

Woody
 


No, I couldn't get her to boot at 4.4GHz, which is a shame. It crashed after 6 hours of Prime95 at 4.3GHz, and so I've left it at 4.2. Considering how low the temps were, I'm surprised. Anyway, it's only for my grandad, he doesn't need blistering speed.

Woody
 
I tried that I believe. I can't get 3.3ghz upping voltage. What kind of baby steps should I take? What is defaulted to? If you still have the board can you take a photo? Thx
 

When You Oc'D Do You Remember The Bios Steps You took. Or did you shoot for a high number like that right off the bat? Did you get any oc before you change voltage? Thx
 
I went for 4GHz at first, as I know pretty much all Pentium AE chips can reach that. I started off with a voltage of 1.05V, as recommended on Anandtech. After being advised here, though, I changed that to 1.2V for 4.2GHz.

Woody
 
1.22V at 4.2 is a good starting point for that chip I just seen your post but have answered 2 post already to day on that chip and using a Z97 board to get 4.2. On both post that is what I stated multiplier to 42 and start the Vcore at 1.22 it will usually post and pass prime 95.
 
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