Need Best Bang for the Buck CPU supporting the Socket 478 Pentium 4

Do you have a question? Post it now! No Registration Necessary.  Now with pictures!

Threaded View
Got this system on and I am looking for the Best Bang for the
Buck CPU supporting a Socket 478 Pentium 4.
SFF motherboard (DTK's DEFT-865G)
-800MHz Intel NetBurst micro-architecture bus.
-Hyper-Threading Technology supported.

I will also need to buy some memory so any suggestions on type and
vendor appreciated. Hoping to get 1GB inless there is a bargain to get
2GB. Any other upgrade suggestions appreciated.

Memory supported:
Dual channel DDR Config consist of 2 DDR DIMM sockets
Support DDR400/333 DIMMs up to 4GB.
This is LAN party type extra PC so it doesn't have to have the best
components but I do need it to be able to do some graphic and video
Horrible integrated Graphics controller in 865G GMCH (whatever that
means), supporting 3D/2D enhancements. Accesses graphic data located
in system memory @ 2.7 GB/s (DDR333) or 3.2GB/s (DDR400).

MoBo has an AGP8X slot for a card which is NOT 3.3v.

Power Supply is only rated at 220W.
Only 1 extra PCI slot for upgrade.

Re: Need Best Bang for the Buck CPU supporting the Socket 478 Pentium 4

Quoted text here. Click to load it

I cannot find a list of supported processors. The thing is,
there is a pinout difference to support Celeron-D, and if one
pin is not wired correctly, the machine will give you a blank
screen when a Celeron-D tries to post. DTK simply refers to
Pentium 4 and Celeron.

The potential candidates would be Willemette <sp> (nobody cares),
Northwood (as P4 and Celeron, 0.13u), and Prescott (as P4
and Celeron-D, 90nm). Generally speaking, the 0.13 micron
devices should work with anything, but 90nm support is
something you want the manufacturer to explicitly list as
supported, to be sure.

So, I took another route to find an answer for you. I got
a copy of the latest BIOS (V1.14) from DTK, and used a copy of
CTMC 1.0 to find out what microcode support is in the
BIOS. Microcode support is not a killer issue (you could
make a CPU run in some fashion without it), but it does hint
at what processor families the manufacturer supports.

Decompressing V1.14, using splitawd (without LHA in
the same directory as splitawd.exe), then decompress 00000002.bin,
then ctmc cpucode.bin /store, I get the following microcode support:

Microcode utility ctmc V1.0, c't/Andreas Stiller 02/2001
 Filename     Version  UpdateID Date       CPUID    Checksum  LoadVers Platform
 CPUCODE.BIN  00000001 0000002E 02.05.2003 00000F12 B2548D0A 00000001 00000004
 CPUCODE.BIN  00000001 00000001 29.05.2001 00000F21 78CDDD37 00000001 00000004
 CPUCODE.BIN  00000001 00000008 30.07.2001 00000F23 7483278F 00000001 00000004
 CPUCODE.BIN  00000001 0000001E 05.06.2003 00000F24 9BA58D71 00000001 00000004
 CPUCODE.BIN  00000001 00000005 08.05.2003 00000F13 386C53DA 00000001 00000004
 CPUCODE.BIN  00000001 00000015 21.07.2003 00000F25 D6976E46 00000001 00000004
 CPUCODE.BIN  00000001 00000037 04.06.2003 00000F27 972CD5FA 00000001 00000004
 CPUCODE.BIN  00000001 00000017 18.07.2003 00000F29 C42D13A3 00000001 00000004

A Celeron-D, like this one, is family code 00000F41 (not supported)

This 3.0E Prescott (FSB800, 1MB cache) is 00000F34 (not supported)

This 3.0Ghz Northwood (FSB800, 512K cache) is 00000F29 (supported)

This 2.0GHz Celeron (FSB400, 128K cache) is 00000F29 (supported)

I think the general trend seems to indicate, that the latest 90nm
parts (Prescott, Celeron-D) are not supported. You can visit the site and look up anything you happen to
find, and see if the CPUID matches one of the supported ones.

You are looking for a 0.13u Northwood P4 or a 0.13u Celeron,
and perhaps 3GHz or under. With a 220W power supply, you cannot
go too crazy with the high power components, and using the
built-in graphics (instead of a video card), may help keep your
new computer cool.

It seems Powerleap has run out of good Northwoods. They have
a 3.06GHz/FSB533/512KB cache for $199, but you really want a
FSB800 if you can find one.

Using Pricewatch, I see one here. OEM means there is no heatsink/fan,
so you'll need to buy a cooler separately:

Pentium 4 3.0GHz 512KB 800MHz Socket 478 - OEM $159.00 (6 in stock)

Check before dealing with a company like that.

Their rating doesn't look too good. Keep looking.

Good luck,

Re: Need Best Bang for the Buck CPU supporting the Socket 478 Pentium 4

I thank you for taking so much time to research this for me however
although I have put together many computers before by fitting this
part to that part successfully, that is where my technical knowledge
All the information provided seems so technical, it just went over my
head. I am now actually more confused in some ways.
I gather I need a 3.0GHz Northwood and not Prescott with 800FSB.
Will just any "3.0GHz Northwood with 800FSB" from eBay do?
NewEgg just have Prescotts. Googling the terms in quotes do provide an
enormous list but I am that guy that when I am trying to find an
address and get to a cross roads, whichever turn I take will ALWAYS be
the wrong turn. Even when I try to be the contrarian and take the turn
that is the opposite of the one I wanted to take, it turns out to be
the wrong turn. This secnario is a perfect example of this.
I wanted a small form factor computer to lug around now and then and I
waited many years to get one. I saw this one on and the
idiots in the forum said it was a great deal, so I followed the
recommendations and bought it and now it turns out I again made the
"wrong turn".
I may have to end up buying the CPU from the only link you provided
but was leary to recommend because at least I know it is what I am
supposed to be looking for.
Again I want to thank you for trying to educate me and look forward to
the day in the future when Intel will stop trying to confuse those of
us who don't want to be computer technicians. There is absolutely no
reason why choosing a CPU should not be as easy as choosing most other
components in a computer.
Again, so I don't sound ungrateful, instead of just ignorant, thank
you, thank you, thankyou.

On Sat, 04 Mar 2006 18:35:30 GMT, (Paul) wrote:

Quoted text here. Click to load it

Re: Need Best Bang for the Buck CPU supporting the Socket 478 Pentium 4

Socket 478 CPUs (Pentium 4)


Quoted text here. Click to load it

Re: Need Best Bang for the Buck CPU supporting the Socket 478 Pentium 4

Quoted text here. Click to load it

The "512KB" tells you it is a Northwood 0.13u P4 processor,
so these two are valid choices.

Intel P4 3.0GHz 800MHz 512KB Socket 478 CPU (OEM, no cooler) $149

Intel P4 2.60 800MHz 512KB 478 CPU Retail (has cooler) $113

The bottom picture here, shows the DEFT-865g comes with its own
cooling solution (heatsink and fan). So if that cooler is actually
good enough for a 3.0GHz processor, then either of the above products
will work. Some of these small systems have custom cooling, and
aftermarket solutions won't fit.

The DEFT-865g has a 220W power supply, and that is not a lot
of power to work with. That amount of power is fine, if the
balance of +3.3, +5V, and +12V has been selected for the
product and they didn't just grab the first small supply and
slap it in there. With these small products, sometimes the
only way to know for sure, is fire up Prime95 torture test,
and see if the power supply "falls over". It would really
help, to find someone who owns a clamp-on DC ammeter, to see
what percentage of the power supply output capacity is
being used. With no video card stuffed in there, that will
help things a bit.

The 3.0GHz Northwood above has a power rating of 82 watts.
That is (82W/12V)*(1/0.90) = 7.6 amps on the 12V output.
The 220W supply should have at least 11 amps and maybe a bit
more on the 12V output. On an ATX system, I would recommend
12V@15A minimum, but given there is no video card, maybe you
can squeek by with a bit less. Doing the power calculation is
never easy, due to the lack of good numbers to work with.
And the power numbers on these small systems are always
tight. (Shuttle fixed that, by offering a power supply upgrade
for its customers. I think Shuttles use a 250W supply or
so normally.)

The 2.6GHz uses 69W, so a bit less power than the 3.0GHz.


Quoted text here. Click to load it

Re: Need Best Bang for the Buck CPU supporting the Socket 478 Pentium 4

Thank you all so much.
I went ahead and ordered the:
Intel P4 3.0GHz 800MHz 512KB Socket 478 CPU (OEM, no cooler) $149
Once it arrives, I'll head down to Fry's and see if they have any
specials on memory.

On Sun, 05 Mar 2006 03:57:40 GMT, (Paul) wrote:

Quoted text here. Click to load it

Site Timeline