[W340] 4GB Ram ...

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cprionas
Posts: 3
Joined: Fri Dec 28, 2007 18:56

[W340] 4GB Ram ...

Postby cprionas » Wed Jan 02, 2008 8:37

Dear all,

First of all, Mary Christmas and Happy New Year!!!

I am owner of a Celsius W340 running the 64bit version of Windows Vista Ultimate Edition. Before some days i updated memory configuration from 2Gb to 4Gb by adding two extra memory dimms.

Unfortunately the total memory that Vista and BIOS recognized was not 4Gb but 3.3Gb.

Please, can anyone explain to me the reason of this??

CPU Type Intel Pentium 4 640, 3200 MHz (16 x 200)
Motherboard Name FUJITSU SIEMENS D2156-A1
Motherboard Chipset Intel Lakeport-G i945G
System Memory 3324 MB (DDR2-533 DDR2 SDRAM)
DIMM1: Hyundai HYMP512U64P8-C4 1 GB DDR2-533 DDR2 SDRAM
DIMM2: Kingston 9905399-003.A00LF 1 GB DDR2-533 DDR2 SDRAM
DIMM3: Kingston 1 GB DDR2-533 DDR2 SDRAM
DIMM4: Kingston 9905399-003.A00LF 1 GB DDR2-533 DDR2 SDRAM

DMI BIOS Vendor FUJITSU SIEMENS // Phoenix Technologies Ltd.
DMI BIOS Version 5.00 R1.10.2156.A1
DMI System Manufacturer FUJITSU SIEMENS
DMI System Product CELSIUS M / W
DMI Motherboard Manufacturer FUJITSU SIEMENS
DMI Motherboard Product D2156-A1

[ DIMM1: Hyundai HYMP512U64P8-C4 ]
Memory Module Properties:
Module Name Hyundai HYMP512U64P8-C4
Serial Number 00002052h (1377828864)
Manufacture Date Week 31 / 2005
Module Size 1 GB (2 ranks, 4 banks)
Module Type Unbuffered DIMM
Memory Type DDR2 SDRAM
Memory Speed DDR2-533 (266 MHz)
Module Width 64 bit
Module Voltage SSTL 1.8
Error Detection Method None
Refresh Rate Reduced (7.8 us)
Memory Timings: @ 266 MHz 4-4-4-12 (CL-RCD-RP-RAS) / 16-28-2-4-2-2 (RC-RFC-RRD-WR-WTR-RTP)

[ DIMM2: Kingston 9905399-003.A00LF ]
Memory Module Properties:
Module Name Kingston 9905399-003.A00LF
Serial Number 0321901Ah (445653251)
Manufacture Date Week 33 / 2007
Module Size 1 GB (2 ranks, 4 banks)
Module Type Unbuffered DIMM
Memory Type DDR2 SDRAM
Memory Speed DDR2-533 (266 MHz)
Module Width 64 bit
Module Voltage SSTL 1.8
Error Detection Method None
Refresh Rate Reduced (7.8 us), Self-Refresh
Memory Timings: @ 266 MHz 4-4-4-12 (CL-RCD-RP-RAS) / 16-28-2-4-2-2 (RC-RFC-RRD-WR-WTR-RTP)

[ DIMM3: Kingston (1 GB DDR2-533 DDR2 SDRAM) ]
Memory Module Properties:
Module Name Kingston
Serial Number B4148882h (2189956276)
Manufacture Date Week 24 / 2005
Module Size 1 GB (2 ranks, 4 banks)
Module Type Unbuffered DIMM
Memory Type DDR2 SDRAM
Memory Speed DDR2-533 (266 MHz)
Module Width 64 bit
Module Voltage SSTL 1.8
Error Detection Method None
Refresh Rate Reduced (7.8 us), Self-Refresh
Memory Timings: @ 266 MHz 4-4-4-12 (CL-RCD-RP-RAS) / 16-28-2-4-2-2 (RC-RFC-RRD-WR-WTR-RTP)

[ DIMM4: Kingston 9905399-003.A00LF ]
Memory Module Properties:
Module Name Kingston 9905399-003.A00LF
Serial Number 0321941Ah (445915395)
Manufacture Date Week 33 / 2007
Module Size 1 GB (2 ranks, 4 banks)
Module Type Unbuffered DIMM
Memory Type DDR2 SDRAM
Memory Speed DDR2-533 (266 MHz)
Module Width 64 bit
Module Voltage SSTL 1.8
Error Detection Method None
Refresh Rate Reduced (7.8 us), Self-Refresh
Memory Timings: @ 266 MHz 4-4-4-12 (CL-RCD-RP-RAS) / 16-28-2-4-2-2 (RC-RFC-RRD-WR-WTR-RTP)

cprionas
Posts: 3
Joined: Fri Dec 28, 2007 18:56

Postby cprionas » Fri Jan 18, 2008 7:58

Any news?? Anyone?? :roll: :roll:

me@work
Posts: 949
Joined: Thu Jun 22, 2006 15:32
Product(s): Scaleo Pi2662, Primergy

Postby me@work » Fri Jan 18, 2008 12:12

The reason why you (and the machine) cannot access the whole 4GB is that a lot of address space below 4GB is already in use by the hardware (PCI components, BIOS, tables, ....).

Some mainboard designs (and BIOSses) allow to remap the memory address above the 4GB barrier, but you need an OS capable of accessing more than 4GB of memory.

Sorry, I don't know the Celsius W340, but you could try and have a look for a BIOS option named 'Remap PCI memory Gap' or the like, or maybe try the latest version of the machine's BIOS.


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