ASUS P4B266-LA processor support and specifications

ASUS P4B266-LA motherboard specifications

CPU socket type:Socket 478
Front Side Bus:400
Chipset:Intel 845

ASUS P4B266-LA CPU compatibility list

Part NumberFrequencyFeaturesBIOSPCBNotes
Intel Pentium 4
2.20 GHz400 MHz FSB, 512 KB cache, Northwood   
2.40 GHz400 MHz FSB, 512 KB cache, Northwood  Support status unknown
2.60 GHz400 MHz FSB, 512 KB cache, Northwood  Support status unknown
2.80 GHz400 MHz FSB, 512 KB cache, Northwood  Support status unknown

When part numbers are not supplied by motherboard manufacturers, we use best guess approach to determine part numbers based on CPU model, frequency and features. In some cases our guess may be incorrect or incomplete. Please always verify part numbers before committing to buying the CPU.

Comments: 19

My mobo not listed

2007-12-17 00:25:41
Posted by: Anthony, dogbreath077@verizon.net

I have an Asus P4B266-LA mobo, and I was wondering what the fastest processor was that I could install? It has a Intel 845 (Brookdale) chipset, northbridge chipset is
I845 MCH, and the southbridge chipset is ICH2. Could someone please post it for all to see, and also Email me? Thanks a bunch in advance.

 

2007-12-17 23:07:24
Posted by: Gennadiy

P4B266-LA should be the same as P4B266 + some extra features, that is it supports Pentium 4 processors up to 2.2 GHz. I found a reference on the net that somebody was running it with Pentium 4 2.4 GHz. I have no idea if Pentium 4 2.6 GHz works in it or not.

Gennadiy

MOBO info

2007-12-30 21:53:07
Posted by: Anthony Nino

Many thanks for the information, I appreciate it.

Processor speed

2008-01-01 18:37:48
Posted by: James T.

HP informed me that 2.2 ghz is the maximum processor speed for this mobo, however, I have seen postings of up to 2.4. I am just trying to figure how to navigate in the bios to overclock the fsb. Any help appreciated.

Hard to overclock

2008-02-18 21:30:16
Posted by: SuperK

OEM motherboards (dell, ibm, hp etc.) are usually difficult to overclock as the manufacturer has locked the frequency settings. The only way you *MAY* be able to overclock is via a program such as CPU-FSB or similar. I have a P4-3.2HT LGA775 in an asus oem hp motherboard, and encountered the same problem. Could not overclock, I had to use CPU-FSB to overclock in windows.

I used CPU-FSB quite a few times on different machines. I got a p4 1.7 up to 1.85 stable with this program, but then any higher the system started complaining. CPU-FSB is a great overclocker tool, but please use with caution. Use of CPU-FSB may damage your hardware if you do not take care of how far you push it.

hope this helps you.

EPox EP-8RDA3

2008-03-28 13:56:36
Posted by: GL

I'm looking for the CPU upgrade options for EP-8RDA3 motherboad. Currently configured with AMD Athlon 1.25 Ghz and would like to upgrade to a faster CPU if it would be worth the money. Thanks.

p4 speed fsb 400

2008-07-07 21:54:22
Posted by: Aldo

The P4B266-LA donīt working with processor p4 up to 2.4. I try with p4 with 2.4 ghz and still work today. Later i try with a 2.8 ghz. and the computer did not ignite.

I hope that it serves to them.

ASUS P4B266-LA can run a P4 2.4 Processor.

2009-01-14 17:34:13
Posted by: Czar Mohab

I am running one right now with no overclocking. Hope that helps.

My ASUS P4B266-LA can't run a P4 2.6 Processor.

2009-09-13 13:49:45
Posted by: Muboz Networks

I bought a
Intel Pentium 4 2.6 GHz - RK80532PC064512 (BX80532PC2600D)
from reference above but the system failed to boot. I'm going to try the
Intel Pentium 4 2.4 GHz - RK80532PC056512 (BX80532PC2400D) and will post results.

7955

2009-10-14 06:36:52
Posted by: Major

is that the same as p4b-la in my hp 7955 with the brookdale. also can ijust pop a new processor i and it be plug ands play or whatelse whould need to be done?

HP Pavilion 780.uk Desktop PC came with this board

2009-12-10 16:55:46
Posted by: kev

HP Pavilion 780.uk Desktop PC came with this board mines 784.uk with p4 3.6ht in it

cpu upgrade

2010-03-16 03:01:01
Posted by: pk

i got a 3ghz cpu cause it was supported by the socket but then found out that the system doesnt support. only to about 2.6ghz i was told by the phone tech. when i put it in it was still running at 1.5ghz. couldnt get it up to 3. it was the bios. how do i update the bios. ive tried re downloading the update and different floppys. the only thing different is that some directions say minmal boot and im not sure what that is.

2.4Ghz P4

2010-06-19 21:34:23
Posted by: Bill Runner

It works perfectly. I have not tried any faster. Has anyone succesfully?

Intel 845 chipset/ 2.8 P4 cpu

2010-07-04 11:05:43
Posted by: clipboard

I own a E-Machine T 4150 and I put a 2.8 ghz p4 512 400 bus in it and it works fine.I checked the bios 1st with si-soft Sandra.

2.8 nogood

2011-02-03 18:01:28
Posted by: Rikard

I bought a 2.8 FSB400 (SL7EY) but it does not work.
At least not for me. I have the HP version of P4B266-LA placed inside a pavilion760, updated with latest HP-bios. Dont dare to try latest ASUS-bius.

533fsb will work

2011-05-11 19:49:30
Posted by: Ben

Although the chipset is listed as 845 in the specs, it actually appears to be an 845E and supports a 533fsb. CPU-Z lists the chipset as i845D. I tried running a 3.06 processor with 533fsb and it did work, but there was no support for hyperthreading. I am now running a 2.66 Northwood with 533fsb and it is running at 2.66.

Same as P$B-LA from pavillion 7955?

2011-05-28 15:04:31
Posted by: MassConfusion

So, is this the same motherboard? When I go to the ASUS site and do the auto check is tells me that I have a P4B. My specs say I have a P4B-LA but I can't find any consistent info as to what CPU will work in it.

I updated my bios with the latest (very old) bios on the HP site. Then I tried a 2.6 400FSB SL6PP P4. Could not get the PC to do anything except run fans. Put the orig 1.5 back in and I'm OK.

Processor

2011-10-14 05:53:18
Posted by: centerfreedownload.blogspot.com

This mother board is not supported at 2.4 GHz or better processor, a maximum of only 2.2 Ghz.

2.4GHz Is Compatible With ASUS P4B266-LA

2011-12-27 21:25:32
Posted by: Murphamillion

Greetings,

I have the ASUS P4B266-LA motherboard (BIOS version 3.02, 11/22/2001) in my HP 750n, which originally shipped with a 1.8GHZ/256/400 Willamette P4. I just replaced the 1.8 with the 2.4GHZ/512/400 Northwood P4 (SL6S9, RK80532PC056512). The processor works great in my PC, no problems. After performing a few benchmarks, I see about a 25% - 30% increase in performance. At $11.00, this upgrade was well worth the money =).

If anyone succeeds in running the P4B266-LA with something faster than the 2.4GHZ P4, please let us know!

Last updated: Dec 17, 2007