Overclocking Abit IP-35e + e2140

XCougar

XCougar

XCougar

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Hi guys, me again, lol.

Can anyone help me with my overclocking issue please?

I have the above mentioned kit and am having trouble pushing my cpu any further. If I get to the 3ghz (ish) level, then the computer refuses to boot, it just black screens.

Ive looked through guides and cant see why mine is doing this as others are getting 3.6Ghz out of the same chip?

Any ideas?


Many thanks,

Tom =)
 
Ok, well first off I have to warn you, I know how to overclock, but ive never actually been able to work out whats going on, lol, so please go easy.

I have 3gb of 800mhz ram.

Ive tried pushing up voltages to see if its that but it doesnt seem to make a difference and I worried im gonna blow it up, lol.

Thanks,

Tom,
 
You almost certainly won't get anywhere near 3.6ghz with an E2140.
Most of the E21*0 range have a FSB wall at ~420mhz, giving a max of under 3.4ghz. Some crap out at as low as 370mhz. All the voltage in the world can't help. I had a beauty of an E2140, but its max was still 'only' just over 3.4ghz.


Have you lowered the memory ratio so that it's not being pushed too far over spec, and have you set its correct voltage.
 
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Which memory are you running, and have you set the correct memory voltage?

If so then up the Northbridge voltage by 0.1v and try again.
 
Could be Elixar, tho 2.1v sounds a little high for it. But if that's what it needs then so be it.

If upping the NB and VTT voltages have no effect when the multi has been lowered to x6 then you may have one of the lower FSB walled chips.
 
Ok, did a cmos clear to default, only changed default settings for fsb and multiplier, to 401 and 6x, still no boot.

Now try upping the voltages?
 
Yip mess around with the NB and VTT voltages.

The CPU voltage will have no effect now you have dropped to the x6 multi, and the memory should be grand too.
 
Ok, cool, ill try that tomorrow, getting a bit late now and I have work.

Ill get back to you tomorrow once ive tried it.

Thanks for your help.

Tom
 
XCougar said:
I tried 401mhz with x6 and it would not boot.
Click to expand...

ip35eit7.jpg


Hey lads,

Trying to run an Intel® Pentium® Processor E2140 (8x200) on it's lowest multiplier at 400MHz-FSB is gonna place a tremendous strain on the Northbridge chipset!

Default Multi= 8
Set Multi= 6
8/6= 1.33
1.33 x 400MHz-FSB= 533MHz NBCC

That is basically the same as asking the Northbridge to run a 533MHz-FSB which is a pretty big ask! :eek:

There is also the fact since the E2140 is a native 200MHz-FSB processor the chipset will default to a low FSB-Strap with tight tRD timings, running a 200-Strap at 400MHz-FSB is again a big ask! :eek:

So it's double-trouble in store for you my son, NBCC-Frazzle + Strap-Slap! :p

I'm not sure I have a solution but I can throw some suggestions your way . .

I suppose the first thing would be to *disguise* the E2140 as a native 266MHz-FSB chip or 333MHz-FSB chip, but for this to work properly I think there would need to be a BIOS option on that board for manually setting the FSB-Strap . . . Does the BIOS have this option? :confused:

Assuming it does then first setup the system like so:

8x266= 2128MHz
or
8x333=2664MHz

and set either a 266-Strap or 333-Strap, that should force the chipset to the correct tRD and allow a better chance to get the system running at 400MHz-FSB + :cool:

So once that's done the next step would be to perform some isolated NBCC clocking to see how capable the Nortbridge chip is . . . also to evaluate the Northbridge cooling as its most likely gonna need some humunga vNB! :eek:

Isolated NBCC testing using Chip with Native x8 Multi
400MHz NBCC= 7x350MHz-FSB
425MHz NBCC= 7x372MHz-FSB
450MHz NBCC= 7x394MHz-FSB
475MHz NBCC= 7x416MHz-FSB

if the system can run 7x350MHz-FSB using an E2140 chip you know your Northbridge is good for running an effective 400MHz-FSB i.e 7x350MHz-FSB and 8x400MHz-FSB is the same thing to the Northbridge (Both run at 400MHz NBCC). This of course would be an easy task for a *premium* motherboard but is not a given with all boards!

If the system won't bOOt when the NBCC is running at 400MHz+ then unleash the Northbridge Voltage, it may need 1.5v/1.6v/1.7vNB to really wake up that old P35, of course once you do this the Northbridge is gonna start cooking unless its cooled properly so a make-shift fan may be required for testing purpose!

These Northbridge volts may sound scarey by modern 45nm/65nm standards but the P35 uses 90nm and therefore isn't as fragile. If some make-shift cooling is employed then I wouldn't worry about using large vNB for testing purposes but may consider added a decent 3rd party Northbridge Heatsink if it turns out the extra volts work and the system is gonna be run flat out 24/7 lol! :p

There is also the question of setting the vTT(vFSB) correctly but we can go over that if all of the above fails! :cool:

Holy cow, long post alert batman! :o

That's all for the moment, I hope this helps you XCougar and any other clocking fiends who happen to be passing! :)
 
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Big.Wayne, I remember seeing your posts in some e2140 topics before, hi! =)

Is FSB strap like the default FSB then? =S

Ill try and upload a picture of my bios later on.

Thanks,

Tom,
 
Big.Wayne said:
Hey lads,

Trying to run an Intel® Pentium® Processor E2140 (8x200) on it's lowest multiplier at 400MHz-FSB is gonna place a tremendous strain on the Northbridge chipset!
Click to expand...

Dude we're doing a very quick test to see if the CPU has a low FSB wall. There's no intention of running it on x6 for any length of time. It's a simple 'Does it boot?' test.


Anyway you're going waaaaaay overboard with the information overload. P35 has no real issues running a 200mhz at 400mhz on a low multiplier. Many of us have tested our E21*0's on the x6 multiplier to find where the expected FSB wall is. 430x6 is no issue with stock NB and VTT voltages if the chip can do it. The chipset automatically changes the strap to compensate for the higher FSB.


Can you point me to the evidence of a P35 burning itself out? Especially during a test that requires little-to-no voltage bump?
 
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MCH is quite high for the FSB (unless you're running 4 sticks of memory), and CPU voltage is very high for the CPU speed.
 
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