Overclocking noob, need help

  • Thread starter Thread starter Eric's collar
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Eric's collar

Eric's collar

My brother has a E6300 running at 1.8 ghz so I decided would give it a small overclock as he only has stock cooling. He has an oem pc so I didn't even expect to be able to overclock it but in the bios I seen an option to change cpu voltage. It lied, all I could change was the fsb. So I changed it by 1 to start with and tested with cpu-z and it was showing. My first ever overclock:)

I decided to be more adventurous and change it so that it was 2.4ghz so I changed it from a default of 267 to 343. Turned on the pc and got keyboard failure and it wouldn't boot. I pooed myself for the next 30 minutes then reset the cmos. It wouldn't boot with the jumper in the second and third pins so I tried the first two again and success!

Is it safe to say I should never attempt this again or could someone give me some advice. What would have caused it not to boot. Was it the 230w psu which is now replaced by a 400w corsair or the awful ecs motherboard?
 
There's nothing wrong with attempting to overclock, if it can be done it should be done. Doing it safely however is another matter.

I'm guessing you meant the Pentium Dual Core E6300 as it's got a stock clock of 2.8GHz and can easily be clocked to 3.6GHz.

Is this the exact CPU I think you're talking about?
What memory have you got and what is it's frequency? Use CPU-Z to find all the info.
What cooler is in the case? Is it a stock cooler?

I recommend you read a lot of guides before overclocking anything, that's the best advice I can give you for now.
 
It's definitely an e6300 and I have 2gb ddr2 ram and it's 533mhz. It's a stock cooler so I'm aiming for a small overclock.

Stock clocks are 1.8ghz, multi of 7, fsb of 266.
 
Go into the bios and frequency/voltage control seems like a good place to start. The only options are auto detect pci clk, spread spectrum and cpu clock. Doesn't seem too encouraging.
 
Right so it's a Core 2 Duo E6300 then, not a Pentium Dual Core. :)
What you need to change is the FSB, which in turn increases BOTH the DRAM and the Core Clock (via the multiplier).

The Memory is of the same frequency as the FSB (Memory bus is double FSB, this is normal). You need to check what maximum clock speed your memory can support when overclocked otherwise it will become unstable and not boot.
 
This may help






If I was to attemp this again, should I increase the fsb in smaller increments such as 266 to 275 etc? I've been reading a few guides and people have been saying to lock PCI / PCI-E busses at 33 / 100 respectively to avoid damage. I don't have the option to do this in bios.


Edit: Should I run prime95 then post the pictures of cpu-z?
 
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PCI-E or PCI Bus won't be affected by such overclocking.
Your memory is 1066MT/s which I estimate shouldn't go over a maximum of 1200MT/s or it will become unstable and won't boot.

Thus you need to increase your FSB to a maximum of 300MHz which will increase the CPU Core clock to 2.1GHz.

Anymore than this and your memory will have too high an overclock and will cause crashes and boot failures.

Unfortunately, this is the maximum I can help you, you'll need to read some guides. Keep an eye on the temps too.
You can increase the FSB in small increments if you like, and when you get to the increment where it doesn't work (doesn't boot or crash) then lower it to the previous increment, but be warned, it's very time consuming.

There's a lot more you need to read up on, such as latency's, voltages, Ratio's etc etc.
Hope this helps you.
 
Thank tou very much Emphacy. I upped the fsb to 300. I don't have any options to change voltages or ram timings etc so I guess this is as far as I can go.

Here's the cpu-z of the overclock.



Temps are about 43C at idle at 56 at load. I'm just running prime to see if it is stable.
 
That looks good.

If you've no option to underclock your RAM, that's as far as you can go. A better motherboard will have options to lower the RAM speed ratio so it doesn't become the limiting factor in your overclock.
 
Eric's collar said:
Is the fsb:dram ratio the thing that is limiting my overclock?
Click to expand...

yes. in your last pic your fsb is 300mhz
if your ram is linked at 1:1 (ratio) then your ram is also at 300mhz (as its ddr2 ram its 300 x 2 = 600mhz)
yet your ram default speed it 533, so you have overclocked the ram as well ;)

usually if you can, you unlink the ram, so it stays at its default sped (533mhz) then overclock the cpu. this way you know the ram is not interfering with the overclock
good luck, and congrats on first overclock.:D and welcome to the forum
also have you run a couple of hours of prime95 blend test to make sure its stable? :)
 
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