2.8GHZ Prescott 478
and
3.4GHZ Pentium D LGA775

I mostly collect Core2's.

sooo.....

Anybody here got any Engineering Samples or similiar?

My kinda collection is:

423:

-1.4ghz(dead)
-1.5ghz

478:

pair of 2A ghz northwoods
2.8Ghz northwood with HT
and engineering sample Northwood,i'm not sure about clock,something between 2.4ghz and 3~,but it have HT for sure (only collectable here suppose)

lga 775:
-945
-540J
-631

others are pentium d or dual-core

From P4 looking only for some Extreme Edition

the last P4 I had was in 2003! it was a Northwood 2GHz, after that I went all AMD until 2009...

the P4 I always wanted back then was the 3.06 Northwood (first HT enabled desktop P4 and very fast against the Athlon XPs back then), I can find them cheaply on ebay and such from China, but they seem to be from laptops mostly, newer revisions (but still the same basic specs), I wonder if that would be problematic for the old motherboards?

Yes. On normal boards like P4P800 they are locked at 1600MHz (133MHz x 12) and SL627 does not have HT enabled. Source : LINK (it's german site, so google translator is recommended for those that do not speaking german 😉).

TheAbandonwareGuy wrote:

2.8GHZ Prescott 478 and 3.4GHZ Pentium D LGA775 […]
Show full quote

2.8GHZ Prescott 478
and
3.4GHZ Pentium D LGA775

I mostly collect Core2's.

sooo.....

Anybody here got any Engineering Samples or similiar?

I got a couple ES's for s478, but I 'think' these are Celerons 🤣
Never got around to test them, mostly because I spend very little time on any s478 hardware.

P4 collection, yeah quite a few pieces. 😀 http://hw-museum.cz/collection-cpu.php?opt0=0 … earch=pentium+4

Most valuable for me are 2.8 Northwood FSB 533 and 3.06 HT... as these work on most AGP 3.3V compatible boards...

rein_ein wrote:

My kinda collection is: […]
Show full quote

My kinda collection is:

423:

-1.4ghz(dead)
-1.5ghz

478:

pair of 2A ghz northwoods
2.8Ghz northwood with HT
and engineering sample Northwood,i'm not sure about clock,something between 2.4ghz and 3~,but it have HT for sure (only collectable here suppose)

lga 775:
-945
-540J
-631

others are pentium d or dual-core

From P4 looking only for some Extreme Edition

Damn, you got a really rare ES, i tried a google search and i couldn't find practically nothing, does that model has the multiplier unlocked? (if you can test it) some ES P4s does have the multi unlocked

SPBHM wrote:

the last P4 I had was in 2003! it was a Northwood 2GHz, after that I went all AMD until 2009...

the P4 I always wanted back then was the 3.06 Northwood (first HT enabled desktop P4 and very fast against the Athlon XPs back then), I can find them cheaply on ebay and such from China, but they seem to be from laptops mostly, newer revisions (but still the same basic specs), I wonder if that would be problematic for the old motherboards?

There are 3 types of 3.06 GHz Northwood P4, the desktop one and two mobile versions.

The desktop one uses (the one you should look) these following S-Specs:
SL6JJ
SL6K7
SL6NN
SL6PG
SL6QC
SL6S5
SL6SM

Tetrium wrote:

TheAbandonwareGuy wrote:

2.8GHZ Prescott 478 and 3.4GHZ Pentium D LGA775 […]
Show full quote

2.8GHZ Prescott 478
and
3.4GHZ Pentium D LGA775

I mostly collect Core2's.

sooo.....

Anybody here got any Engineering Samples or similiar?

I got a couple ES's for s478, but I 'think' these are Celerons 🤣
Never got around to test them, mostly because I spend very little time on any s478 hardware.

I think you should test them someday, also it can be a P4, as i said before, some enginering samples does have the multi unlocked as well.
Did you tried searching by their S-Spec code?

havli wrote:

P4 collection, yeah quite a few pieces. 😀 http://hw-museum.cz/collection-cpu.php?opt0=0 … earch=pentium+4

Most valuable for me are 2.8 Northwood FSB 533 and 3.06 HT... as these work on most AGP 3.3V compatible boards...

Nice website, keep up with you good work

Around my Willamette P4s, i found this interesting model, unlike all my other Socket 478 Willamettes, this one has the big logo which is only common in early models i think

There a pic of that CPU along with another P4 of the same clock and S-Spec, but the other small logo.

Carlos S. M. wrote:

But when i find some old Socket 478. Sometimes i have to deal with this thing, people putting paper/plastic stickers to the IHS, is a pain to remove them after since these sickers will likely hurt thermal conductivity.

Btw. CPU is a Pentium 4 2.53 Ghz SL6D8

Nail polish remover usually works wonders for those. Use sparingly, with a q-tip.

agent_x007 wrote:

Yes. On normal boards like P4P800 they are locked at 1600MHz (133MHz x 12) and SL627 does not have HT enabled. Source : LINK (it's german site, so google translator is recommended for those that do not speaking german 😉).

Carlos S. M. wrote:

There are 3 types of 3.06 GHz Northwood P4, the desktop one and two mobile versions. […]
Show full quote

There are 3 types of 3.06 GHz Northwood P4, the desktop one and two mobile versions.

The desktop one uses (the one you should look) these following S-Specs:
SL6JJ
SL6K7
SL6NN
SL6PG
SL6QC
SL6S5
SL6SM

thank you both for the info

looking at the ebay CPUs it looks like sl6pg and sl6s5 are easy to find and inexpensive from the Chinese sellers, so I might be getting some P4 love again soon.

Carlos S. M. wrote:

Tetrium wrote:

I got a couple ES's for s478, but I 'think' these are Celerons 🤣
Never got around to test them, mostly because I spend very little time on any s478 hardware.

I think you should test them someday, also it can be a P4, as i said before, some enginering samples does have the multi unlocked as well.
Did you tried searching by their S-Spec code?

Yes I did, but that was years ago.

I'll go see if I have their S-Spec codes here somewhere.

I do have a Tualeron ES 1400 with unlocked multiplier, but the multipliers I set in the BIOS didn't correspond with the multiplier this ES booted with. I was testing this out when I discovered this (at 66MHz FSB I think), but remember having had some troubles getting the setup to behave and my final attempt I suppose I accidentally overclocked it too much, so it may be dead now.

Also founhd out I seemed to have some QS or ES 1000MHz Coppermine, but I dunno if this one actually has unlocked multipliers.

Let's see - not too many but:

P4-2.8 bought new in 2001 as part of an Abit SR7-8X cpu/mobo combo. With an ATI 9700 pro it was a W98 screamer until I finally switched to XP in 2005 on a new AMD based system

P4-1.8, P4-2.4 & P4-3.066 Northwoods salvaged from discarded work machines. The 3.066 is currently in service on a rebuilt 9700 pro build. Nice performer.

P4-3.2, P4-3.4 and P4-3.6/2M Prescotts: cheap ebay purchases part of a P4 experimentation project 1-2 years ago. S775 very flexible and ended up using an C2D E6700 in the final build to come out of that process, so the P4 fire breathers sit idle...

Probably a couple more lower end P4's in the box from old work pulls... I have no beef with the P4, and fond memories of the 2.8 days. But still I did need to "unlearn" acquired P4 prejudices slowly picked up on the tech sites over the years. Decent part.

As to my P4 collection, I actually never had any until about 2 months ago. Since then I acquired a socket 423 1.7GHz Willamette system, and a couple of socket 478 systems (2.0 and 2.4GHz Northwood). I also have a LGA775 motherboard/CPU(2.8GHz)/memory that I haven't actually been able to get started because of the proprietary Dell crap that it requires (PSU, fan - all with nonstandard pinouts).

stamasd wrote:

As to my P4 collection, I actually never had any until about 2 months ago. Since then I acquired a socket 423 1.7GHz Willamette system, and a couple of socket 478 systems (2.0 and 2.4GHz Northwood). I also have a LGA775 motherboard/CPU(2.8GHz)/memory that I haven't actually been able to get started because of the proprietary Dell crap that it requires (PSU, fan - all with nonstandard pinouts).

Dell P4 boards and some late P3 boars (like Optiplex GX50 and GX150) and newer uses standard PSU pinouts afaik. about cooler, the older 3 pin Dell coolers could be hacked to use standard coolers, but since yours is LGA 775, it might use a newer 4 pin which i don't know it's pintout. What is your dell motherboard and CPU model? do you have pics of it? 2.8 ghz can be ethier a Pentium 4 or a Pentium D

Don't remember the exact model, and I don't have access to it right now (I'm currently in Europe on vacation). It's a P4 Northwood-based board. The PSU uses 2 small connectors (I think one is 8-pin and the other 10-pin) and the fan uses a 5-pin connector.

For Socket 478 I have
-SL7PP 3.40GHz/1M/800
-3.2GHz Extreme Edition (inside Dell)
-2.66GHz/256/533 Celeron D

For Socket 479 I have a mobile Pentium 4, never opened up the Laptop to see what it really is.

For Socket 775

I have two:
630 SL7Z9
3GHz/2M/800
One made in Costa Rica, the other made in China.

SL7J6
3GHz/1M/800

Pentium D 915 SL9KB
2.8GHz/4M/800

Pentium D 950 SL95V
3.4Ghz/4M/800

I tend to keep CPUs, even if I never actually use them. I've used the Pentium D 950 when I had a small form factor compaq. Mysteriously stopped booting one day so off it went.

zstandig wrote:

For Socket 478 I have -SL7PP 3.40GHz/1M/800 -3.2GHz Extreme Edition (inside Dell) -2.66GHz/256/533 Celeron D […]
Show full quote

For Socket 478 I have
-SL7PP 3.40GHz/1M/800
-3.2GHz Extreme Edition (inside Dell)
-2.66GHz/256/533 Celeron D

For Socket 479 I have a mobile Pentium 4, never opened up the Laptop to see what it really is.

For Socket 775

I have two:
630 SL7Z9
3GHz/2M/800
One made in Costa Rica, the other made in China.

SL7J6
3GHz/1M/800

Pentium D 915 SL9KB
2.8GHz/4M/800

Pentium D 950 SL95V
3.4Ghz/4M/800

I tend to keep CPUs, even if I never actually use them. I've used the Pentium D 950 when I had a small form factor compaq. Mysteriously stopped booting one day so off it went.

I kinda do the same, i kept several CPUs which i never tested them, like a Socket 604 Xeon or a mobile Celeron 600

I have only: Pentium IV 1.7 with 256 KB L2 with Willamette core, PIV 2.0A with 512 KB L2 Northwood and PIV 2.8C with HT and 800 Mhz FSB and with 512 KB L2 and also with Northwood core, all are for Socket 478.

Northwood 1.8A/512/400 SL63X
Prescott 2.8E/1M/800 SL79K

I got the 2.8E with the Mainboard i'm using but 55°C in bios was a bit much, as i was expecting to stick with small coolers i replaced it with the 1.8A.
My scope has since expanded a little so i'd like to get a faster option.

Board compatibility aside is there anything speaking against the 3.2/512/800 Northwood? Seems like the fastest 478 chip that isn't rare as hens teeth.

3,4GHz Northwood : LINK
3,4GHz Prescott : LINK

Cooling them is main problem.
Even Northood at 3,2GHz (w/HT) will get hot without proper air flow.
Nortwood also can't go much further (3,6-3,8GHz usually) + the SNDS thing...

Prescott's rev. C0/D0 are Really Bad (and you can get those in 3,2GHz and 3,4GHz flavours).