IIRC Northwood A - 400 MHz FSB (up to 2 GHz, to distinguish from Willamettes), Northwood B - 533 MHz FSB, Northwood C - 800 MHz FSB.
Prescott A - 533 MHz FSB (they not intersect with Northwoods A, because the lowest Precott A speed is 2.26 GHz), Prescott E - 800 MHz FSB.
As the example there are 2.8, 2.8B, 2.8C, 2.8A, 2.8E variants for the 2800 MHz version (Northwood 400/533/800, Prescott 533/800).
LGA 775 versions use processor number.

Maybe your CPU is P4 2.4B and motherboard is ok?

Gamecollector wrote:

IIRC Northwood A - 400 MHz FSB (up to 2 GHz, to distinguish from Willamettes), Northwood B - 533 MHz FSB, Northwood C - 800 MHz […]
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IIRC Northwood A - 400 MHz FSB (up to 2 GHz, to distinguish from Willamettes), Northwood B - 533 MHz FSB, Northwood C - 800 MHz FSB.
Prescott A - 533 MHz FSB (they not intersect with Northwoods A, because the lowest Precott A speed is 2.26 GHz), Prescott E - 800 MHz FSB.
As the example there are 2.8, 2.8B, 2.8C, 2.8A, 2.8E variants for the 2800 MHz version (Northwood 400/533/800, Prescott 533/800).
LGA 775 versions use processor number.

Maybe your CPU is P4 2.4B and motherboard is ok?

I'm very sure it isn't because the CPU says i's a SL66Q,which CPU World says it's a P4 1.8A.

Also,has anyone heard of SNDS? (Sudden Northwood Death Syndrome)

SNDS is when you apply a small amount of vcpu in addition to stock voltage and the cpu melts its wires inside like they were fuses of some sort.
Ending up a dead cpu. if i am right. cooling not even mentioned.

JaNoZ wrote:

SNDS is when you apply a small amount of vcpu in addition to stock voltage and the cpu melts its wires inside like they were fuses of some sort.
Ending up a dead cpu. if i am right. cooling not even mentioned.

Spooky stuff.

SL66Q Northwood 1.8A's default voltage is (almost)1.6v,I shouldn't exceed 1.75v (SNDS starts at 1.75v)

Also,I found out why my 1.8A is running at 2.40GHz.It's because the BIOS automatically sets the FSB at 133x18,so the FSB would be 533 at this point because it's using QDR.(Quad Data Rate)

Is the board setting you to 133FSB because a divider is either not being set, or is being improperly set?

obobskivich wrote:

Is the board setting you to 133FSB because a divider is either not being set, or is being improperly set?

I have no idea at this point.
Maybe it's seeing it as a 133FSB CPU? (like the Celeron D)

This board is able to do 800fsb right?
Why not put in a 800fsb cpu?

JaNoZ wrote:

This board is able to do 800fsb right?
Why not put in a 800fsb cpu?

Because the only place that sells Socket 478 CPUs,it sells them at a ridiculous high,despite all being second hand.Also I plan on getting a original Xbox.

I'd better stick with my CPUs,at least they're free.

I thought you can pick them up from ebay for a few euro's.

JaNoZ wrote:

I thought you can pick them up from ebay for a few euro's.

Yeah it shouldn't be terribly expensive, like this guy:
http://www.ebay.com/itm/281388940257 😀 (it says worldwide shipping)

Still not free though, so there's that. 😊

Rather than use a HT Preshott,I'd stick with a HT Northwood 🤣

Alright,here's the CPU-Z validation of my Northwood:
http://valid.x86.fr/8c2fe0

Interesting. AFAIK default FSB is hardcoded in the CPU and can be readed by CPU_ID instructions. There are motherboards with a bugged CPU_ID support?

Possible.

Motherboard is incorrectly detected as Unknown Springdale-G. It's actually a 865G adapted Iwill P4SE-Gold BIOS.

And the noname stick is actually a V-Data 256MB stick.

Also,the temperature is funny : -1*C! 🤣

My in-progress Prescott system tells me to contact HP to update the cpu microcode when it starts up and that the cpu is unknown. Yet the bios detects it as a Intel Pentium 4 670, which it is. Seems to work good so far, if it runs stable and does not give you any problems who cares right?

ODwilly wrote:

My in-progress Prescott system tells me to contact HP to update the cpu microcode when it starts up and that the cpu is unknown. Yet the bios detects it as a Intel Pentium 4 670, which it is. Seems to work good so far, if it runs stable and does not give you any problems who cares right?

"If it ain't broke,don't fix it!"

In typical HP fashion they decided that the xw4400 was designed for a narrow range of Core2duo chips and did not see fit to upgrade the Bios to allow newer Core2's or any Pentium 4 chips 😒 lots of support threads angry at a lack of core2quad microcode updates and reports of 100% stability ignoring the notice and using them anyways!

ODwilly wrote:

In typical HP fashion they decided that the xw4400 was designed for a narrow range of Core2duo chips and did not see fit to upgrade the Bios to allow newer Core2's or any Pentium 4 chips 😒 lots of support threads angry at a lack of core2quad microcode updates and reports of 100% stability ignoring the notice and using them anyways!

If I'd were you,I would have changed the motherboard with a usual one.

HP puts on their motherboards a crippled BIOS of the board,not to mention they cripple the board too. (like the P4SD,which is actually the P4G800)

Nowadays a LGA775 motherboard shouldn't be too expensive,at least not the older ones like i945,P35 and such.

ODwilly wrote:

In typical HP fashion they decided that the xw4400 was designed for a narrow range of Core2duo chips and did not see fit to upgrade the Bios to allow newer Core2's or any Pentium 4 chips 😒 lots of support threads angry at a lack of core2quad microcode updates and reports of 100% stability ignoring the notice and using them anyways!

I have seen (once or twice) people BIOS modding to add more modern CPU microcode into the BIOS, perhaps this can be investigated. Of course it would all be unofficial, etc.

Stiletto wrote:

ODwilly wrote:

In typical HP fashion they decided that the xw4400 was designed for a narrow range of Core2duo chips and did not see fit to upgrade the Bios to allow newer Core2's or any Pentium 4 chips 😒 lots of support threads angry at a lack of core2quad microcode updates and reports of 100% stability ignoring the notice and using them anyways!

I have seen (once or twice) people BIOS modding to add more modern CPU microcode into the BIOS, perhaps this can be investigated. Of course it would all be unofficial, etc.

When it's about a OEM board,it just isn't worth it,since most OEMs write protect the BIOS.

He needs a new LGA775 board for the CPU to work(Pentium 4 CPUs won't work on this one),and IMHO this one is the best replacement to what he has,and with both types of RAM:

http://www.ebay.com/itm/Foxconn-X38A-Motherbo … =item3f3ac3284a

and another one for Pentium 4 chips:
http://www.gigabyte.com/support-downloads/cpu … p.aspx?pid=2847