Which P4 will be quicker?

[joroma]

I've got a choice of 3 P4's to run in my P4P-800 Deluxe mobo:

1) The exg 2.8Ghz/512/800 SL6WJ Malaya which runs happily a 3Ghz using the auto overclocking feature on my board.

2) A 3.00Ghz/1m/800 SL7E4 Costa Rica.

3) A 3.0Ghz/512/800 SL6WU Phillipines.

Which is the best?

 

[joroma]

Blast - I hadn't realised the SL7E4 was a Prescott.

If I try and autoclock my 2.8ghz Northy any more than 10% the pc crashes.

I had assumed the 3ghz Northy would be faster!

Is it a case of fitting the 3Ghz and seeing if it will autoclock faster?

 

[joroma]

I've got 4 sticks of Twinmoss 256 DDR-SDRAM PC3200U 2.5-3-3-8 running dual channel speed 2x210Mhz if that helps.

The CPU is using 1.54V Stepping 2/9(9) Multiplier 14/1x.

All courtesy of SIS Sandra. I'm pretty sure my CPU is locked.

 

[joroma]

i could be totally off the mark on this one.... so here goes.

i vaugely remember SL6WU had more chance of being 30 capper than SL6WK (but like i say i could be totally wrong)

check it has 30 transistors? on the underside, its usually a sign of it being a 'better' clocker than the ones with less.

The SL6WU has got 12 little boxes on the bottom if that tells you anything.

 

[joroma]

12 capper then, not a Gallatin core, dosen't stop it from clocking though

Would my Twinmoss be limiting the overclocking potential?

 

[joroma]

Try upping the dimm voltage to 2.7 or 2.8 and maybe try 3 3 3 8 timings to see if things go further.

Just had a look in my BIOS can't see an option to increase DIMM Voltage but there is a DDR Reference Voltage Option currently set to Auto. No sign of how to adjust timings to 3-3-3-8?

Noticed in the CPU settings CPUID Max Value Limit disabled. Should I enable this feature?

Is it worth fitting the 3.0 SL6WU or will I ger pretty much the same results with my 2.8 SL6WJ?

 

[joroma]

Is their a way of checking if it's the Ram holding me back? Using Autoclock at 10% everything is rock steady at 3.08Ghz.

I didn't get round to changing CPUs at weekend but should it also clock 10% giving me 3.3Ghz or might the RAM cause me a problem???

 

[joroma]

Hey thanks for that. I'll have a go tomorrow.