I have a Pentium 4 1.7Ghz 478 socket 400mhz CPU in my Ps4800d-x motherboard. I want to upgrade to a faster processor. There are 3.2Ghz & 3.4Ghz available. But is there a maximum size I can install?

Going with problem heading stating ->

IBM 73P0595 motherboard > CPU Support > and previous problem statement ->
"I have updated my processor from INTEL Pentium d 820,2800mzh 1500mzh to INTEL Pentium d 945,3400mzh....."

Let's take a look at the IBM 73P0595 motherboard specifications, first;

http://www.epinions.com/specs/IBM_System_Boad_W_O_POV_10_100_73P0595_Motherboard?sb=1

http://www.ebay.com/itm/Lenovo-73P0595-ThinkCentre-M50-A50-Motherboard-SOCKET-478-2-4GHz-Intel-CPU-/200870757822?pt=Motherboards&hash=item2ec4d485be

A) Socket 478 processor socket

http://en.wikipedia.org/wiki/Socket_478

B) Intel 865G motherboard chipset,

http://en.wikipedia.org/wiki/List_of_Intel_chipsets#Pentium_4_chipsets

The Intel 865G motherboard chipset DOES NOT support dual core processors.
Does NOT support an Intel Pentium D; 820 OR 945

http://en.wikipedia.org/wiki/List_of_Intel_Pentium_D_microprocessors#.22Smithfield.22_.2890_nm.29

http://en.wikipedia.org/wiki/List_of_Intel_Pentium_D_microprocessors#.22Presler.22_.2865_nm.29

Those two processors also use the LGA 775 processor socket.
(Socket T,

http://en.wikipedia.org/wiki/Socket_T )

What did you base your CPU support on?
Was it the fact that the Intel 865G motherboard chipset, will support Intel Celeron D?

http://en.wikipedia.org/wiki/Celeron_D#Celeron_D

The Intel Celeron D is NOT a dual core processor,

http://en.wikipedia.org/wiki/Celeron_D#Celeron_D

"The Intel Celeron D processor works with the Intel 845 and 865 chipset families.

The D suffix actually has no official designation, and does not indicate that these models are dual-core.

It is used simply to distinguish this line of Celeron from the previous, lower performing Northwood and Willamette series, and also from the mobile series, the Celeron M......"

Not the IBM 73P0595 motherboard we're talking about?

OK.

Let's just base it on the statement that you tried to upgrade, from an Intel Pentium D820 to an Intel Pentium D945,

http://www.fixya.com/support/t13549945-update_intel_pentium_d_945_procesor

What motherboard are you using?
Motherboard in a HP Compaq DC7600 Desktop PC?

http://h18000.www1.hp.com/products/quickspecs/12253_div/12253_div.HTML

Scroll down to the bold subheading -> Processor and Speed

Intel Pentium D820 at 2800MegaHertz (2.8GigaHertz),
with 800MegaHertz Front Side Bus, is supported.
(800MHz FSB)

Probably came with your computer, huh?

Intel Pentium D945 at 3400MHz (3.4GHz), with 800MHz FSB is supported also.

This can be seen by the specifications of the motherboard chipset, also. The Intel 945G motherboard chipset,

http://en.wikipedia.org/wiki/List_of_Intel_chipsets#Pentium_4.2FPentium_D.2FPentium_EE_chipsets

Scroll down to 945G in the left column. (Last one listed in chart)

Apparently you just needed the 786D family Processor Microcode Update, or did that not work out?

Awaiting reply,
Regards,
joecoolvette

(How did I come up with the HP Compaq DC7600, anyway?
Did you add it in a Comment, and it has been removed, or what?

!O_O! )

MicroStar International (Inc) Support > 865PE Neo2-P Platinum Edition (MSI MS-6728) Main Support page,

http://www.msi.com/product/mb/865PE-Neo2-P-Platinum-Edition.html

Click on Specification
(Overview / Specification / Download / Support / etc)

CPU (Processor) Support;

1) Intel Pentium 4 processors that have;

A) Use a Socket 478 processor socket,

http://en.wikipedia.org/wiki/Socket_478

B) Northwood Core, or Prescott Core

C) Front Side Bus (FSB) of 400MegaHertz (400MHz) for Intel Pentium 4 processors that are based on the Northwood Core.

D) FSB support of either 533MHz, or 800MHz, for Intel Pentium 4 processors based on the Prescott Core.

Processors that have an 800MHz FSB can be used, that have UP TO a 3.6GHz frequency rate. ('Speed')
Indication that higher 'speeds' can be supported. (Overclocking?)

Now let's look at Intel Pentium 4 processors, that are based on the Northwood Core, and fit a Socket 478 processor socket,

http://en.wikipedia.org/wiki/List_of_Intel_Pentium_4_microprocessors#Northwood_.28130.C2.A0nm.29

(Front Side Bus = FSB
The M/Ts listing means MegaTransfers per Second.
Believed to be a more accurate method of stating the FSB, than MHz.

MegaHertz
Mega = 1 Million
Hertz stands for Cycles per Second. Was named after a man with the last name Hertz.
Example; 400MHz = 400 Million Cycles per Second )

Intel Pentium 4 processors based on the Prescott Core, and utilizing the Socket 478 processor socket,

http://en.wikipedia.org/wiki/List_of_Intel_Pentium_4_microprocessors#Prescott_.2890.C2.A0nm.29_2

sSpec Number will be on the processor, as well as the Part Number.

http://www.cpu-world.com/CPUs/Pentium_4/index.html

Scroll down for photos.

CPU support can be attested to looking at the specs for the motherboard chipset, on your motherboard.

The motherboard chipset is an Intel 865PE chipset.
Intel 82865PE northbridge chip, and an Intel ICH5 southbridge chip.

http://en.wikipedia.org/wiki/List_of_Intel_chipsets#Pentium_4_chipsets

Scroll down to 865PE in the left column.

The part number on the Intel ICH5 southbridge chip, is Intel 82801EB,

http://en.wikipedia.org/wiki/List_of_Intel_chipsets#Southbridge_8xx_chipsets

The Northbridge chip of the motherboard chipset, handles the Faster capabilities of a computer.
Processor (CPU), Ram Memory, and HIGH-speed graphics.

HIGH-speed graphics is the AGP technology, or PCI Express technology.

Using a graphics card in a PCI slot, or using Integrated Graphics; is NOT high-speed graphics,

http://en.wikipedia.org/wiki/File:Motherboard_diagram.svg

The Slower capabilities of a computer are handled by the Southbridge chip.

If this is a question of what CPU is on your motherboard at present, and the motherboard is in a working computer, suggest use the free tiny program CPU-Z from CPUID.com,

http://www.cpuid.com/softwares/cpu-z.html

Need to know how to download, install, and use CPU-Z, post back in a Comment.

Regards,
joecoolvette

This motherboard is built with the Intel 845 chipset and is socket 478. This particular motherboard will not support a dual core processor of any kind. This board will only support a standard socket 478 Pentium 4 processor at best. I do not know of any that will support anything better than a Pentium 4 2.8GHz processor with a 400MHz F.S.B.

Yes, it will work just fine, as you can see for yourself - on the mb's link is the third processor from the second group (Prescott).

why not go with a faster MB and CPU combo?
First to awnser your question yes the Pentuim 3.2 will fit the MB as long as yours is a 800 Mhz Bus speed. And the Board can be configured for the proper clock speed. I would also buy a new CPU fan and heatsink greese b4 you install this CPU. Thee are so many cheap CPU MB Combos out there its almost cheaper to just replace both and get a much faster system.

Yes it's compatible. The best you could probably upgrade to would be a socket 478 Pentium 4 2.8 ghz 400mhz fsb. Hope this helps.

You should be able to upgrade the CPU, since it seems that the DV1000's motherboard uses a socket CPU design. But, obviously, HP would rather have you choose the CPU that you want from the beginning and stick with it.
The first thing to do is to check HP website to see what other configurations were/are sold for your model. If they sell it with faster CPUs then you can upgrade to one of them...

PLEASE NOTE:
In order for a particular processor to be compatible with a particular laptop:
(1) the processor must be physically compatible with the laptop socket, in your case I thing you have a Soket 479 processor
(2) the laptop chipset must support the processor.
(3) the chipset front side bus speed must match the processor front side bus speed, in your case 400Mhz.
(4) the laptop BIOS must support the processor.

So I listed here processors with FSB at 400Mhz, I gues that DV1000 as a 855GM Motherboard that supports only 400Mhz with Socket 479

Pentium M

Banias
Pentium M 1.3 1300 1024 400
Pentium M 1.4 1400 1024 400
Pentium M 1.5 1500 1024 400
Pentium M 1.6 1600 1024 400
Pentium M 1.7 1700 1024 400

Dothan
Pentium M 710 1400 2048 400
Pentium M 715 1500 2048 400
Pentium M 725 1600 2048 400
Pentium M 735 1700 2048 400
Pentium M 745 1800 2048 400
Pentium M 755 2000 2048 400
Pentium M 765 2100 2048 400

Celeron M

Banias-512
Celeron M 310 1200 512 400
Celeron M 320 1300 512 400
Celeron M 330 1400 512 400
Celeron M 340 1500 512 400

Dothan-512
Celeron 205 1200 512 400

Dothan-1024
Celeron M 350 1300 1024 400
Celeron M 360 1400 1024 400
Celeron M 370 1500 1024 400
Celeron M 380 1600 1024 400
Celeron M 390 1700 1024 400

Best Regards

According to the product website your board supports all intel socket 478 cpu's. Maybe you bought a faulty cpu ?
M266A

1. Socket 478 for Intel® P4 processor
2. VIA® P4M266A chipset

• FSB 533MHz
• Supports Hyper-Threading Technology
• Hybrid Booster - a safe overclocking feature
• 2xDDR 266/200
• Integrated ProSavage8 3D Graphic

Socket 478, Intel® Pentium 4 / Celeron
- FSB 533/400MHz

This computer has DDR SDRAM
The processor is an Intel pentium 4
In some cases quoted as a socket 478 so a compatibe processor should work

Your processor is a Pentium 4 processor that uses there are 3 different type of sockets for Pentium processors. Socket 423, socket 478, and the latest one is socket 775.
Based on the information here:

http://www.emachines.com/support/product_support.html?cat=Desktops&subcat=T-Series&model=T4150

Your MoBo has a Socket 478 and since it only support 400MHz bus, then your maximum upgrade is 2.0MHz, because all other devices faster than that, need higher bus speed that your Mother Board does not support.

Hope you find the answer useful.

Best regards,
/Farhad