PJ's Prescott: 2.8E on the DFI LanParty 875B

[chainbolt]

Originally posted by: THUGSROOK
interesting info:

H|OCP could not get their prescott to run on a p4c800.

is not just the foremost site for overclocking. And we all remember when they posted faked/bogus benchmarks in one of their P4 reviews.
Several reviews sites could run Prescott on a P4P800, ASUS has validated the P4P800 for Prescott. The only possible conlcusion is that had (a) a bad P4P800 sample or (b) simply the reviewer did not know how to handle hardware.

 

[ntrights]

Originally posted by: pastorjay
Ok, another screen...

270fsb at 1.5vcore


And I about wet myself when I ran this Aida read test:
WOW!

Almost 1Gig overclock with AIR with the Prescott chip !

Awesome Aida score!!!

If you take any bench requests..Id like to see some super pi benches (1M)...
I bench 1M=38seconds and 2M= 1min.28seconds....

 

[Technonut]

Originally posted by: chainbolt

Originally posted by: THUGSROOK
interesting info:

H|OCP could not get their prescott to run on a p4c800.

[H is not just the foremost site for overclocking. And we all remember when they posted faked/bogus benchmarks in one of their P4 reviews.
Several reviews sites could run Prescott on a P4P800, ASUS has validated the P4P800 for Prescott. The only possible conlcusion is that [H had (a) a bad P4P800 sample or (b) simply the reviewer did not know how to handle hardware.

H-OCP may not be the "foremost" OC'ing site, but in their testing, the ASUS was not the only mobo to show serious temp issues when OC'ing the Prescott. Those results were good enough for Overclockers.com (a "foremost" OC'ing site) to include in their Article, so cut THUGS (and me) a break.

I am still waiting for PJ to throw a thermal probe on the MOSFETs and caps.... And also, the final results that are Prime95 / 3D / stable for 24 hours...

 

[KrisMCool]

PJ, have you tried Memtest86+ v1.0 with the Prescott yet? I couldn't get the floppy or CD versions to work. I get a split second flash of the blue background with very little text before it reboots. The older Memtest86 v3.0 works but shows the L1 cache as unknown. I just want to see if anyone else with the same board and CPU gets the same results.

 

[jpetermann]

Stability testing will be next. THis chip may have some more room, but I am not to willing to go above 1.5vcore at this moment. And it will NOT be stable at 270, but I could run a bunch of benches at that.

 

[redpriest_]

That ridiculously high score for Prescott in Aida is obviously the result of cache contamination - it's not a *true* memory read result - think about, what's the max bandwidth for dual DDR? 6.4 GB/s - and that's at 100% efficiency, which is *impossible* - there is a lot of overhead.

 

[lookin4dlz]

pastorjay, can you make an apples-to-apples comparison of the Northwood at 3.8 to the Prescott at 3.8? That may take some research to find someone who has essentially the same setup as you & has the Northwood at 3.8GHz...

 

[AkumaX]

Originally posted by: chainbolt

Originally posted by: THUGSROOK
interesting info:

H|OCP could not get their prescott to run on a p4c800.

is not just the foremost site for overclocking. And we all remember when they posted faked/bogus benchmarks in one of their P4 reviews.
Several reviews sites could run Prescott on a P4P800, ASUS has validated the P4P800 for Prescott. The only possible conlcusion is that had (a) a bad P4P800 sample or (b) simply the reviewer did not know how to handle hardware.

link on the fake/bogus benchmarks?

 

[MDE]

Originally posted by: AkumaX

Originally posted by: chainbolt

Originally posted by: THUGSROOK
interesting info:
H|OCP could not get their prescott to run on a p4c800.

H is not just the foremost site for overclocking. And we all remember when they posted faked/bogus benchmarks in one of their P4 reviews.
Several reviews sites could run Prescott on a P4P800, ASUS has validated the P4P800 for Prescott. The only possible conlcusion is that H had (a) a bad P4P800 sample or (b) simply the reviewer did not know how to handle hardware.

link on the fake/bogus benchmarks?

Fixed the black highlighting . Putting the H in brackets screws with FuseTalk and causes that to happen.

 

[Rythan]

Originally posted by: redpriest_
That ridiculously high score for Prescott in Aida is obviously the result of cache contamination - it's not a *true* memory read result - think about, what's the max bandwidth for dual DDR? 6.4 GB/s - and that's at 100% efficiency, which is *impossible* - there is a lot of overhead.

The max bandwidth for the DDR depends on how it's clocked.. if PJ's running it 1:1, then its theoretical max is 270MHz * 2 (DDR) * 8 bytes (64 bit) * 2 (dual channel) = 8640 MB/sec, higher than what AIDA reported.

6.4GB/s is the theoretical max for dual DDR at a stock FSB of 200MHz.

 

[orion7144]

PJ, what PSU are you using?

 

[jpetermann]

Originally posted by: orion7144
PJ, what PSU are you using?

Antec True COntrol 550

 

[jhites]

Originally posted by: pastorjay
Ok, another screen...

270fsb at 1.5vcore


And I about wet myself when I ran this Aida read test:
WOW!

WoW - PJ. Had a few up's and down's with this one but looks like
all is well today. Congrats on a nice OC.

edit: What ram are you using with this setup??

 

[jpetermann]

The 270 1:1 is with my OCZ 4000EL

 

[JustStarting]

how's the stability testing going?? will it run @ 260FSB stable??

 

[Shimmishim]

PJ, my a64 @ 2.4 240 mhz 1:1 running 2-2-2-6-11-16 2M superpi time is the exact same as yours!!!

PF pointed it out to me.

 

[jpetermann]

Wow, very nice Shim... incredible that it takes me 3.7-3.8 to get that isn't it!

 

[jose]

There's to be a new stepping soon.
http://www.theregister.co.uk/content/51/35535.html

This should lower temps.

Regards,
Jose

 

[JustStarting]

Originally posted by: lookin4dlz
pastorjay, can you make an apples-to-apples comparison of the Northwood at 3.8 to the Prescott at 3.8? That may take some research to find someone who has essentially the same setup as you & has the Northwood at 3.8GHz...

got a 3.0 Northy running 3.75 p95 stable so far to compare benchies to. LMK if you want comparisons PJ.

super Pi- 1M= 38 seconds... is that good??

 

[ProfessorFate]

Originally posted by: JustStarting

Originally posted by: lookin4dlz
pastorjay, can you make an apples-to-apples comparison of the Northwood at 3.8 to the Prescott at 3.8? That may take some research to find someone who has essentially the same setup as you & has the Northwood at 3.8GHz...

got a 3.0 Northy running 3.75 p95 stable so far to compare benchies to. LMK if you want comparisons PJ.

super Pi- 1M= 38 seconds... is that good??

Shim and PJ are cranking it out in 1 min, 23 sec. I think those two are going to meet at the OK Corral or something.

 

[Shimmishim]

lol!!!

thanks for the laugh... stupid strepthroat is really dampering my mood....

i haven't talked to PJ in a bit... should check up on him!!!

 

[JustStarting]

Originally posted by: ntrights

Originally posted by: pastorjay
Ok, another screen...

270fsb at 1.5vcore


And I about wet myself when I ran this Aida read test:
WOW!

Almost 1Gig overclock with AIR with the Prescott chip !

Awesome Aida score!!!

If you take any bench requests..Id like to see some super pi benches (1M)...
I bench 1M=38seconds and 2M= 1min.28seconds....

38 sec for 1MB- gues I'm on target here.... 2MB will have to wait till tomorrow..... stability testing my 3.0c @ 3750 w/ p95 right now.

 

[Markfw]

Well, I 'm at 41 sec for 1m and 1 minute 33 sec for 2m. I have to OC some more. I will get back if I can beat my own time....

 

[ntrights]

Originally posted by: JustStarting

Originally posted by: ntrights

Originally posted by: pastorjay
Ok, another screen...

270fsb at 1.5vcore


And I about wet myself when I ran this Aida read test:
WOW!

Almost 1Gig overclock with AIR with the Prescott chip !

Awesome Aida score!!!

If you take any bench requests..Id like to see some super pi benches (1M)...
I bench 1M=38seconds and 2M= 1min.28seconds....

38 sec for 1MB- gues I'm on target here.... 2MB will have to wait till tomorrow..... stability testing my 3.0c @ 3750 w/ p95 right now.

 

[althes]

Just got mine using a epox 4pca3+.
Running it at 255fsb 1.53vcore
Using zalman7000alcu
running prime as we speak.
WE do pi next and dhrystone.