Question about ASUS P4P800 SE (890552603657) Motherboard

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Dual channel memory supported?

I have a P4 2.8 533 FSB Northwood processor on it.
According to the manual I should be able to use dual-channel PC2700 DDR DIMMs. But I can run the DDRs only in single-channel mode. In fact, if I don't plug in an old Micron PC2100 512MB module in one of the 4 slots, the thing won't boot. I.e. a matching pair of Kingston PC2700 (1G each), won't work alone in slot 1 and 3. If I plug in the Micron, they all work in single channel.
Is it a board problem, i.e. the North bridge or the processor?

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  • 761 Answers

Have you checked the bios setup may not be the problem but worth a try
My computer recognized dual channel automatically do you have them set in correct Channels as they are specific for dual channel
normally labeled 1 2 3 4 etc must put dual channel ram in 1 and 2 channel

Posted on Jul 25, 2008

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System reguirements to inrease ram memory


Ram Memory typically operates at half of the frequency rate, ('Speed'), that the Processor's -> FSB does.

Your motherboard supports Processors that have either a 400MegaHertz Front Side Bus, (400MHz FSB), or 533MHz FSB, or 800MHz FSB.

(Northwood Core for 400MHz FSB. The rest is in the other solution I provided)

Processor has a 400MHz FSB?
You can use DDR Sdram ram memory that is 266MHz.
(PC2100)

Processor has a 533MHz FSB?
You can use DDR Sdram ram memory that is either 266MHz, Or 333MHz.
(PC2100 and PC2700 respectively)

Processor has an 800MHz FSB?
You can use DDR Sdram that is either 266MHz, or 333Mhz, or 400Mhz.
(PC2100, PC2700, and PC3200, respectively)

NOTE*
When using a processor that has an 800MHz FSB, and using PC2700, (DDR at 333MHz), the PC2700 ram memory will run at ->
320MHz.

JEDEC has set the voltage requirements for DDR Sdram at 2.5 Volts.
'Performance' ram memory that is DDR Sdram may use higher voltages.
Not recommended unless you know how to overclock.

Although the motherboard, and the ram memory module may have SPD, it doesn't always work,

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

A lot of times you are faced with going into BIOS Setup, and changing the ram memory voltage, IF BIOS Setup has this feature.
This is why I say overclocking experience helps tremendously.

You want Low Density, Unbuffered, Non-ECC, and a CL of 2.5 for PC2700, and a CL of 3.0, (3) for PC3200.

[Why would anyone want to run PC2100> Lol! ]

For additional questions please post in a Comment.

Regards,
joecoolvette

Nov 11, 2012 | Computers & Internet

1 Answer

What type of dual core processor can I use for my dc7600?


The motherboard for the dc7600 has an Intel LGA775 processor socket. However, not all LGA775 processors are compatible with the motherboard. For the small form factor, the following CPUs are supported: Intel Celeron D Processors:
Intel Celeron D 331 Processor (2.66-GHz, 256K L2 cache, 533-MHz FSB) , Intel Celeron D 336 Processor (2.80-GHz, 256K L2 cache, 533-MHz FSB) , Intel Celeron D 346 Processor (3.06-GHz, 256K L2 cache, 533-MHz FSB)
Intel Pentium 4 Processors with HT Technology:
Intel Pentium 4 521 Processor (2.8-GHz, 1-MB L2 cache, 800-MHz FSB) , Intel Pentium 4 524 Processor (3.06-GHz, 1-MB L2 cache, 533-MHz FSB) , Intel Pentium 4 541 Processor (3.2-GHz, 1-MB L2 cache, 800-MHz FSB), Intel Pentium 4 620 Processor (2.8-GHz, 2-MB L2 cache, 800-MHz FSB), Intel Pentium 4 630 Processor (3.0-GHz, 2-MB L2 cache, 800-MHz FSB), Intel Pentium 4 631 Processor (3.0-GHz, 2-MB L2 cache, 800-MHz FSB), Intel Pentium 4 640 Processor (3.2-GHz, 2-MB L2 cache, 800-MHz FSB), Intel Pentium 4 641 Processor (3.2-GHz, 2-MB L2 cache, 800-MHz FSB), Intel Pentium 4 650 Processor (3.4-GHz, 2-MB L2 cache, 800-MHz FSB), Intel Pentium 4 651 Processor (3.4-GHz, 2-MB L2 cache, 800-MHz FSB), Intel Pentium 4 661 Processor (3.6-GHz, 2-MB L2 cache, 800-MHz FSB) or
Intel Pentium D Dual Core Processors:
Intel Pentium D 805 Dual Core Processor (2.66-GHz, 2x1MB L2 cache, 533-MHz FSB), Intel Pentium D 820 Dual Core Processor (2.8-GHz, 2x1MB L2 cache, 800-MHz FSB), Intel Pentium D 915 Dual Core Processor (2.8-GHz, 2x2MB L2 cache, 800-MHz FSB), Intel Pentium D 925 Dual Core Processor (3.0-GHz, 2x2MB L2 cache, 800-MHz FSB), Intel Pentium D 930 Dual Core Processor (3.0-GHz, 2x2MB L2 cache, 800-MHz FSB), Intel Pentium D 940 Dual Core Processor (3.2-GHz, 2x2MB L2 cache, 800-MHz FSB), Intel Pentium D 945 Dual Core Processor (3.4-GHz, 2x2MB L2 cache, 800-MHz FSB), Intel Pentium D 950 Dual Core Processor (3.4-GHz, 2x2MB L2 cache, 800 MHz FSB)

Unfortunately, these are old processors and I don't see any available new. Newegg.com lists a couple available as refurbished. You may be better off getting a new computer with either a Intel I3 or current AMD processor.

I wish that I had better news for you.

Cindy Wells
(do not attempt to use a CPU that your motherboard doesn't support. It probably won't boot.)

Mar 30, 2012 | HP Compaq dc7600 Small Form Factor PC...

1 Answer

HP Pavilion Media Center PC not detecting memory in slots 3 & 4.All memory works in slots 1 &2.Memory is all the same.


Info from the manual:

Memory configurations

You can install 128 MB, 256 MB, 512 MB, and 1GB DDR SDRAM DIMMs into the DIMM sockets using the memory configurations in this section.

• Install only identical (the same type and size) DDR DIMM pairs

using the recommended configurations.

• Make sure that the memory frequency matches the CPU FSB

(Front Side Bus). Refer to the Memory frequency/CPU FSB

synchronization table on the next page.

• This motherboard does not support double-sided 16-bit DDR DIMMs.

• Do not create a three-DIMM configuration in dual-channel mode. The
third DIMM is ignored in the dual-channel operation.

Recommended memory configurations

Memory frequency/CPU FSB synchronization

* Use only identical DDR DIMM pairs.

Sockets

Mode DIMM1 DIMM2 DIMM3 DIMM4

Single-channel (1) Installed - - -

(2) - Installed - -

(3) - - Installed -

(4) - - - Installed

Dual-channel* (1) Installed - Installed -

(2) - Installed - Installed

(3) Installed Installed Installed Installed


CPU FSB DDR DIMM Type Memory Frequency

800 MHz PC3200 400 MHz
533 MHz PC3200/PC2700 400/333 MHz

Feb 18, 2011 | ASUS PTGD-LA Motherboard

1 Answer

Does the MB support an Intel Prescott 3,06 ghz fsb 800mhz processor?


that is a socket 478 board. it supports northwood and early prescotts. prescotts at 3.06 with the 800mhz fsb were made in both socket 478 and lga 775 forms, so you have to make sure that your processor is indeed a socket 478 model.

Nov 06, 2010 | Abit IC7-G I875P;SOCKET 478;800MHz...

1 Answer

I have Acer Aspire-5570-4765 laptop with Intel Core Duo Processor T2050 (1.60GHz, 533 MHz FSB, 2MB L2Cache) & 1 GB DDR2 (support dual channel) RAM memory. I want to upgrade RAM my memory from 1GB...


512 MB of DDR2 533 MHz system memory, upgradeable to 2 GB using two soDIMM modules (dual-channel support)

Yes its possible
Yes but the memory its going to run at slow speed 533Mhz

Sep 26, 2010 | Computers & Internet

2 Answers

Not recognizing memory.


The Asus P4S800-X MB can use Dual channel DDR memory and single channel memory. The dual channel memory which comes in matching packs. (Normally 2 DIMMS per pack) is the faster memory.
In other words if you are installing, 4- 512MB DIMMS of PC3200 all memory should be matched,
or you're MB may not see all connected DIMM'S.

See page vii in you're manual. If you're running windows XP, Home or Pro edition the bios will show up to 4GB of memory installed but windows XP 32bit will only show 3GB of memory. As mentioned above all 4 of you're 512MB of memory should be dual channel and run at the same speed. You can run both single channel and dual channel but you must follow Table 1 in you're manual. (1-9).
Example; PC3200 400MHz.
Or 4-512MB PC2700 333MHz. See page 1-9 for memory configurations and the QVL list supported.
Check out Asus FAQ's; http://support.asus.com/faq/faq.aspx?SLanguage=en-us&model=P4S800D-X&product=6&os=17

This should help you configure the memory.
Good luck!
Mike

May 09, 2010 | ASUS P4S800D-X Motherboard

1 Answer

Need specifications for Intel PM-865G1 mobo


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 Support Matrix

FSB\Memory clock DDR266 DDR333 DDR400 800 MHz YES YES* YES 533 MHz YES YES NO 400 MHz YES NO 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

Apr 27, 2010 | Intel Motherboard

2 Answers

How do i change the memory bus speed on my dell optiplex 170l? The CPU is an Intel Celeron 2.4GHz. The mother board processor speed is 400MHz and the Bios indicates a memory bus speed of 266MHz and does...


You checked in the right place as far as looking in the BIOS, however, memory and CPU sockets do not necessarily have the same buss speed. My FSB runs at 1066Mhz and my RAM at 800Mhz, it all depends on what type of RAM you buy as to the bus speed. You can up the bus speed on your RAM if you wish to reduce bottle-necking, but I've only done that a few times. In order to adjust anything, you must set the settings to manual. Be careful when you change this stuff around though, voltages must also be adjusted accordingly.

Feb 28, 2010 | Dell OptiPlex 170L PC Desktop

2 Answers

Problem qdi p4i865 pro


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.

Please vote...

Dec 26, 2007 | Computers & Internet

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