i3 540 - had 221 BCLK. Now can't?

[ewarwoowar]

I purchased an i3 540 because I had a spare p55 board that I wasn't going to sell so I popped it in, got a titan fenrir on it then continued to try and get the maximum BCLK the chip could do.


I did all the nomal stuff, isolated BCLK fron CPU clock by lowering multi so that it was below the CPU spec of 3.07ghz

Isolated it from Memory by lowering the memory multiplier so it runs under spec.

I then proceeded to up the BCLK and run 3 runs of IBT every time I upped it by 10 till I got to 220 on 1.34 VTT.

I tried to get further, I got 221 stable for 5 runs of maximum IBT then when I went any further, not even 1.38 vtt would make it stable on 223 or 222 so I was going to settle for 220 or 221.

Now my PC won't even boot with 210 with the exact same settings.

Is it possible the things gone bust? I stayed within intels safe maximum voltage ranges.


Just when I thought I was getting lucky with a chip

 

[Surveyor]

I purchased an i3 540 because I had a spare p55 board that I wasn't going to sell so I popped it in, got a titan fenrir on it then continued to try and get the maximum BCLK the chip could do.


I did all the nomal stuff, isolated BCLK fron CPU clock by lowering multi so that it was below the CPU spec of 3.07ghz

Isolated it from Memory by lowering the memory multiplier so it runs under spec.

I then proceeded to up the BCLK and run 3 runs of IBT every time I upped it by 10 till I got to 220 on 1.34 VTT.

I tried to get further, I got 221 stable for 5 runs of maximum IBT then when I went any further, not even 1.38 vtt would make it stable on 223 or 222 so I was going to settle for 220 or 221.

Now my PC won't even boot with 210 with the exact same settings.

Is it possible the things gone bust? I stayed within intels safe maximum voltage ranges.


Just when I thought I was getting lucky with a chip

When you say the exact same settings is that with the processor and the memory still downclocked?

 

[ewarwoowar]

Oh yes.

I've now got it back up to 220. Pheow!

I just started back at 200 and worked my way back up, seems the chip doesn't like going straight to 220. I'm still goin to try further. Max VTT I think i'll settle for is 1.38.

220 has just passed 5 tests of standard IBT. I'll now try 221, fingers crossed!

 

[ewarwoowar]

Just an update if anyone cares

Got to 4.2ghz on lower than stock voltages!

Only high voltage is my VTT which is right on the end of intels maximum of 1.40v