Question about ASUS P4S800D-X Motherboard
Installed 2 x 1GB pairs first in blue channels, then in black channels. Both configurations register properly with 2GB total. When all 4 DIMMS are installed, the max amount registered in the BIOS is just under 3GB. Tried updating the BIOS to release 1006.002 with out any results. Any ideas? Also, the memory frequency is clocked at 200MHz even after setting the DRAM frequency in the BIOS to 400MHz. Changing this setting doesn't seem to affect the actual operating frequency at all. Anyone know what I need to do to get the most out of my hardware? 128 Bit Access Mode in BIOS is set to AUTO which registers as 128*1 (instead of 64*2). Register Dump from CPU-Z: ------------------------- Processors Information ------------------------- Processor 1 (ID = 0) Number of cores 1 Number of threads 2 (max 2) Name Intel Pentium 4 Codename Prescott Specification Intel(R) Pentium(R) 4 CPU 3.00GHz Package Socket 478 mPGA (platform ID = 2h) CPUID F.4.9 Extended CPUID F.4 Core Stepping G1 Technology 90 nm Core Speed 3001.3 MHz (15.0 x 200.1 MHz) Rated Bus speed 800.3 MHz Stock frequency 3000 MHz Instructions sets MMX, SSE, SSE2, SSE3 L1 Data cache 16 KBytes, 8-way set associative, 64-byte line size Trace cache 12 Kuops, 8-way set associative L2 cache 1024 KBytes, 8-way set associative, 64-byte line size FID/VID Control no ------------------------- Chipset ------------------------- Northbridge SiS 655FX rev. 50 Southbridge SiS 964 rev. 36 Graphic Interface AGP AGP Revision 3.0 AGP Transfer Rate 8x AGP SBA supported, enabled Memory Type DDR Memory Size 2048 MBytes Memory Frequency 200.1 MHz (1:1) CAS# 2.0 RAS# to CAS# 3 RAS# Precharge 2 Cycle Time (tRAS) 4 ------------------------- Memory SPD ------------------------- DIMM #1 General Memory type DDR Manufacturer (ID) Mushkin (7F7F7F9400000000) Size 1024 MBytes Max bandwidth PC3200 (200 MHz) Part number 991429 Manufacturing date Week 06/Year 07 Attributes Number of banks 2 Data width 64 bits Correction None Registered no Buffered no EPP no Timings table Frequency (MHz) 200 CAS# 2.0 RAS# to CAS# delay 3 RAS# Precharge 2 TRAS 6 DIMM #2 General Memory type DDR Manufacturer (ID) Mushkin (7F7F7F9400000000) Size 1024 MBytes Max bandwidth PC3200 (200 MHz) Part number 991429 Manufacturing date Week 06/Year 07 Attributes Number of banks 2 Data width 64 bits Correction None Registered no Buffered no EPP no Timings table Frequency (MHz) 200 CAS# 2.0 RAS# to CAS# delay 3 RAS# Precharge 2 TRAS 6
If you installed total 4GB memory, the system will detect less than 4GB of total memory because of address space allocation for other critical functions, such as: - System BIOS (including motherboard, add-on cards, etc..) - Motherboards resources - Memory mapped I/O - configuration for AGP/PCI-Ex/PCI - Other memory allocations for PCI devices Different onboard devices and different add-on cards (devices) will result of different total memory size. e.g. more PCI cards installed will require more memory resources, resulting of less memory free for other uses. On a SLI system, since PCI-Ex graphic cards will occupy around 256MB, another 256MB will be occupied after you install a 2nd PCI-Ex graphic card. Hence, 2.75GB memory left only if two SLI cards installed on A8N-SLI Premium while 3.0GB memory left with one graphic card without other add-on devices. This limitation applies to most chipsets & Windows XP 32-bit version operating system. If you install Windows XP 32-bit version operating system, we recommend that you install less than 3GB of total memory. If more than 3GB memory is required for your system, then below two conditions must be met: 1. The memory controller which supports memory swap functionality is used. The latest chipsets like Intel 975X, 955X, Nvidia NF4 SLI Intel Edition, Nvidia NF4 SLI X16, and AMD K8 CPU architecture can support the memory swap function. 2. Windows XP Pro X64 Ed. (64-bit) or other OS which can address more than 4GB memory. You can check below URLs for reference: http://dlsvr01.asus.com/pub/ASUS/mb/4GB_Rev1.pdf http://www.intel.com/support/motherboards/server/sb/cs-016594.htm
Posted on Sep 06, 2007
Ok, you've addressed AGP apeture. What about the PCI-E video ard that doesn't use AGP apeture?
Posted on Feb 08, 2008
Tips for a great answer:
For dual-channel memory configuration (2), you may:
• install identical DIMMs in all four sockets OR
• install an identical DIMM pair in DIMM_A1 and DIMM_B1 (yellow
sockets) and another identical DIMM pair in DIMM_A2 and
DIMM_B2 (black sockets)
* Always use identical DDR2 DIMM pairs for dual-channel model. For
optimum compatibility, we recommend that you obtain memory modules
from the same vendor.
Sep 11, 2011 | ASUS M2N-MX Motherboard
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.
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
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