I have a P4PE-X board, P4 2.8mhz HT Processor ,3x256 3200u 400 DDR clk3 memory. I cannot get the bus to run at 800, it only runs at 200. also in windows xp pro I cant run Hardware acceleration or 3D with my video card which is ATI Radeon 9800 pro128 AGP /DV
I have the same motherboard and did a little reading. The chipset on these motherboards was not really designed for the 800MHz, but it was still used by ASUS anyways. I have reduced the FSB speed on my system for increased stability. Here is the posting from another site which I found.
The 845PE Northbridge was designed for FSB400/FSB533 processors,using DDR266/DDR333 memory. (See page 11 in the Intel spec.)
No matter how many different models of this motherboard that
Asus made, it is still based on the 845PE. Operation at FSB800
with DDR400 memory constitutes overclocking, and overclocking
comes with no guarantees (only Intel can test the chips and
bin them for speed, and the chips are not tested at FSB800/DDR400, so Asus has no way of knowing how far they can be pushed).
I've read descriptions of other people's luck with the 845PE
and it is described as "I can set the clock to 200MHz and
not a stitch more". That means even in the best case, there is
absolutely no margin left. The fact that your board runs stable
at 190MHz, instead of 200MHz, should not be a surprise, as Intel only has to guarantee the chips work at 133MHz (for FSB533).
The sin being committed here, is the user manual should state
that "overclocking comes with no guarantees". Persons interested in buying FSB800 processors, should be buying a P4P800/P4C800 or equivalent board, as the Northbridge chips on boards like that are guaranteed by Intel to run at FSB800.
If you want rock solid operation, pair a 3.06/FSB533/512K
Northwood processor with the 845PE Northbridge.
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It appears your board was manufactured sometime around 2003. It has supported front side bus speed
of 800, 533, and 400 MHz, and has a capacity of up to 4GB Dual Channel DDR 400 MHz (PC3200), 333 MHz (PC2700), and 266 MHz (PC2100).
Note: Be sure to review important memory and system bus speed considerations before using this desktop board Hope this helps.
Hello, *********** board will suport for 133 bus speed memory.Memory Size is not the matter,what ever you can install in the mother board,may be 128/256/512,but ensure the bus speed .It wont be more than 133 mhz.,then your mobo can not support.If you have SDR 133 bus speed ram you can install . *********** board speed is 400 mhz,you can change 478 pin any intel processor,for better performence but the bus speed would be 400 mhz or bellow 400mhz,both will be suported.
Specifications CPU • Supports Intel® P4 Northwood/Prescott/P4 Extreme Edition processors.(PCB v1.1 only) • FSB 400(Northwood only)/533/800MHz • Supports up 3.2GHz and higher speed Memory Speed/CPU FSB Support Matrix Memory Speed/CPU FSB
NO • Intel® 865G Chipset - Supports 800/533/400MHz Intel NetBurst micro-architecture bus. - Integrated graphic controller. - Supports PC2100/PC2700 /PC3200 memory. - Supports AGP 8X/4X at 0.8V (AGP 3.0) or 4X at 1.5V (not support 3.3V) interface. • Intel® ICH5 Chipset - AC'97 2.3 interface - 8 USB 2.0/1.1 ports - 2 channel Ultra ATA/100 Bus Master IDE controller - SMBus 2.0 support - 2 serial ATA Host Controllers - Integrated LAN controller • Support 100(Northwood only)/133/200MHz • Support 400(Northwood only)/533/800MHz Intel NetBurst micro-architecture bus. • Supports two 64-bit wide DDR data channels. • Available bandwidth up to 3.2GB/s(DDR 400) for single-channel mode and 6.4GB/s(DDR 400) for dual-channel mode. • Supports four unbuffered DIMM of 2.5 Volt DDR SDRAM. • Supports up to 4GB memory size without ECC. • One AGP slot supports 8x/4x at 0.8V (AGP 3.0) or 4x at 1.5V (3.3V is not supported). • Three PCI 2.2 32-bit Master PCI Bus slots. - Supports 3.3v/5v PCI bus Interface. • One CNR slot • Dual Ultra DMA 66/100 IDE controllers integrated in ICH5 - Supports PIO, Bus Master operation modes. - Can connect up to four Ultra ATA drives. • Serial ATA/150 controller integrated in ICH5 - Up to 150MB/sec transfer speeds. - Can connect up to two Serial ATA drives. • AC'97 link controller integrated in ICH5 • 6 channels software audio codec C-Media 9739A - Compliance with AC97 v2.2 Spec. - Meet PC2001 audio performance requirement. - Can support SPDIF Out via 3-pin SPDIF bracket only. • Intel 82562EZ - Integrated 10/100 Ethernet MAC and PHY in one chip - Supports 10Mb/s and 100Mb/s auto-negotiation operation - Compliant with PCI v2.2, and LAN on Motherboard (LOM) standard
Check your Processor cooling system.If the cooling is not proper or if the processor is not working properly then the system will restart on its own with in few minutes of boot up process.Also check if there is any infection.
No. DDR replaced the SD in RAM so SDRAM and DDR RAM are two completely different things but each ram type has its own frequency hence you get SDRAM 100(mhz) and SDRAM 133(Mhz) just like you get DDR 1 RAM at 266(mhz) and 400(mhz) and DDR 2 RAM at 533(mhz) and 800(mhz). Therefore as you can see how these things differ, but if your mboard takes SDRAM that it can take and frequency of SDRAM but you must ensure that all the frequencies of all your RAM modules in all your slots correspond otherwise you will have problems, meaning that if you decide to use 133mhz RAM then all your RAM modules that you use must be the same. Let me know how you go. thanks
Check your manual and find the QVL list. Memory tested to work in your board is listed there. I found a link that shows your board. Click the Download on the left & check your manual. http://www.qdigrp.com/qdisite/eng/news/20030521.htm
You Max speed is 400Mhz memory as you will see at the link.