Any information on the new D0 Prescott stepping CPUs?

[AdamK47]

I've heard that they are supposed to be out shortly with significantly deceased operating temperatures. I'm hoping to get a 3.2 to 4GHz even with a 250MHz bus.

 

[ntrights]

I would like to know too. So far the stepping to look for seems to be SL79A its a C0 . Check out this guys modded ASUS P4C800-E with a 3.0 SL79A . He's running it with a 300+ FSB (3.0 @ 4618)MACH II R404 COOLING , apperantly its stable enough to run benchmarks look at his super pi. 1m= 30 seconds :shocked: must be one of the fastest pc systems around!!

still i will wait for the D0, MACH11 cooling and modded mobos is a bit extreme for me 3.0e @ 317 FSB

 

[Acanthus]

NT do you mind me asking what mobo youre running in that rig?

 

[ntrights]

it's a ASUS P4C800-E Deluxe. I can boot with a 310 FSB with air not stable though...with a mach11 cooling and some voltahe mods i could probably run it @ ~ 310

 

[Acanthus]

How hot does your northbridge run?

I ask because im running a P4P8x and im planning on moving to the P4C800-E for a higher fsb overclock.

Right now im almost positive im limited by the northbridge, as it actually gets hotter than the CPU @ Load, and thats after cooling mods (AS5 and a 60mm fan added). Before the mod i couldnt even get 215fsb, after the mod i can get 240, but my goal is 266 (on a 2.6C).

Voltages and Temps @ Idle

Everything else in the system is pretty much top of the line:

2.6C
P4P8X
1GB OCZ PC4200 Gold
Antec Truecontrol 550w
Geforce FX5600 (moving to 6800U on its release).

Edit:

Sorry for the thread hijack.

On topic:

The new prescott core is going to be 11 layers instead of 7, reducing EMI and leakage in the chip, and will more than likely increase yields and overclocking potential dramatically. The 4 extra metal layers is the only architectural changes i have heard of (which isnt a small change i know, it requires a redesign of the entire chip, im referring to no changes to cache structure or pipeline stages etc).

 

[ntrights]

My asusprobe shows (idle): cpu 32 C/89 F for the and MB 36 C /96 F but i dont use any fan/artic silver (thinking of going hardcore ones i get D0 prescott with a mach11 or sumthing ) on the northbridge. For the cpu i use Zalman CNPS7000-AlCu

Do you use any special tool to measure the northbridge temps?

Its a good idea to cool the NB like you are doing. The reason i havent been to much concernend about temps are that i was able to go 300+ directly without doing anything special when i got my M0 chip. Ive settled with 300 and 3:2 divider cas 2-2-2-6 mushkin level2 ram, been running the system with these settings for a good 8-9 months, rock stable! I guess im one of those who got lucky with the 2.4 M0 Costa Rica chip.

Intresting info there on the prescott..I can allready see 5 Gz+ with a 3.0E

 

[Acanthus]

Good to know your temps are that low on that mobo at 300fsb. My goal is 266fsb with a 1:1 mem ratio @ 1.6v actual core, 2.85v mem. Ill probably upgrade the northbridge cooling just for kicks.

I measure the temps with Asus PC Probe.

 

[ntrights]

P4C800-E is a great board you should be able to squeeze out a few more fsb but remember that the cpu might limit you. Not so many are able to go higher then 150 with 2.6C Those who have have got the M0 Costa Rica that i know of. 266 and 1:1 with tight timings should rock!

 

[Acanthus]

Originally posted by: ntrights
P4C800-E is a great board you should be able to squeeze out a few more fsb but remember that the cpu might limit you. Not so many are able to go higher then 150 with 2.6C Those who have have got the M0 Costa Rica that i know of. 266 and 1:1 with tight timings should rock!

Theres no such thing as a 2.6C M0, only 2.4 and 2.8.

And where it was placed in a box doesnt matter it was all fabbed in the same place.

 

[ntrights]

Theres no such thing as a 2.6C M0, only 2.4 and 2.8.

yeah, sorry my bad, i was thinking of the 2.8 M0

And where it was placed in a box doesnt matter it was all fabbed in the same place.

true, but from what i've seen most M0's that overclock so well are boxed in costa rica. dunno if that is a coincidence but never seen a m0 from any other place..

 

[Acanthus]

That very well could be true although i havent heard of that.

Im not really expecting to get 3.46 outta the cpu, although i think with this cooling setup and power supply, the motherboard could be the only part holding the system back barring just a poor ocing chip.