Re: HP HDX18-1180ed MaximumGB of RAM



Paul,

Some info:
Processors Information
-------------------------------------------------------------------------

Processor 1 ID = 0
Number of cores 2 (max 2)
Number of threads 2 (max 2)
Name Intel Mobile Core 2 Duo P8600
Codename Penryn
Specification Intel(R) Core(TM)2 Duo CPU P8600 @
2.40GHz
Package (platform ID) Socket P (478) (0x7)
CPUID 6.7.6
Extended CPUID 6.17
Core Stepping M0
Technology 45 nm
Core Speed 2393.2 MHz
Multiplier x FSB 9.0 x 265.9 MHz
Rated Bus speed 1063.6 MHz
Stock frequency 2400 MHz
Instructions sets MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1,
EM64T, VT-x
L1 Data cache 2 x 32 KBytes, 8-way set associative,
64-byte line size
L1 Instruction cache 2 x 32 KBytes, 8-way set associative,
64-byte line size
L2 cache 3072 KBytes, 12-way set associative,
64-byte line size
FID/VID Control yes
FID range 6.0x - 9.0x
Max VID 1.138 V

Chipset
-------------------------------------------------------------------------

Northbridge Intel PM45 rev. 07
Southbridge Intel 82801IM (ICH9-M) rev. 03
Graphic Interface PCI-Express
PCI-E Link Width x16
PCI-E Max Link Width x16
Memory Type DDR3
Memory Size 4096 MBytes
Channels Dual, (Symmetric)
Memory Frequency 531.8 MHz (1:2)
CAS# latency (CL) 7.0
RAS# to CAS# delay (tRCD) 7
RAS# Precharge (tRP) 7
Cycle Time (tRAS) 20
MCHBAR I/O Base address 0x0FED10000
MCHBAR I/O Size 4096

Memory SPD
-------------------------------------------------------------------------
DIMM # 1
SMBus address 0x50
Memory type DDR3
Module format SO-DIMM
Manufacturer (ID) Micron Technology (2C00000000000000)
Size 2048 MBytes
Max bandwidth PC3-8500F (533 MHz)
Part number 16JSF25664HY-1G1D1
Serial number D842BEC2
Manufacturing date Week 47/Year 08
Number of banks 8
Nominal Voltage 1.50 Volts
EPP no
XMP no
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 6.0-6-6-18-24 @ 457 MHz
JEDEC #2 7.0-7-7-20-27 @ 533 MHz
JEDEC #3 8.0-8-8-23-31 @ 609 MHz

DIMM # 2
SMBus address 0x52
Memory type DDR3
Module format SO-DIMM
Manufacturer (ID) Micron Technology (2C00000000000000)
Size 2048 MBytes
Max bandwidth PC3-8500F (533 MHz)
Part number 16JSF25664HY-1G1D1
Serial number D842BECC
Manufacturing date Week 47/Year 08
Number of banks 8
Nominal Voltage 1.50 Volts
EPP no
XMP no
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 6.0-6-6-18-24 @ 457 MHz
JEDEC #2 7.0-7-7-20-27 @ 533 MHz
JEDEC #3 8.0-8-8-23-31 @ 609 MHz
Gr
Jos




On Fri, 27 May 2011 12:21:07 -0400, Paul <nospam@xxxxxxxxxx> wrote:

JoSSo wrote:
Paul,

Yes, it is.

Gr
Jos

Fortunately for you, HP mentions the possibility of supporting 8GB total,
so your installation may work. The way this is stated, means at the
time of manufacture, the laptop may have been verified in the
lab with 2GB modules. But the hardware supports 4GB modules. If
you encounter trouble, then look for a BIOS update from HP.

http://h20195.www2.hp.com/V2/GetPDF.aspx/c01646468.pdf

Memory 4096 MB (2 x 2048 MB)
Supports up to 8 GB of DDR3 memory <----

To take advantage of the total amount of memory, you'll need
an x64 installation of the operating system.

When the new memory is installed, you can use memtest86+ to
do an initial check that the memory is working. The test pattern
you observe, while it's testing, shows how the memory is mapped
(leaving space between 3GB and 4GB for hardware bus addresses).

http://www.memtest.org/

Scroll half way down that web page, to find the downloadable software.

If the memory completes a couple passes with that tool error free,
then it is safe to boot into Windows.

Once in Windows, further testing should be carried out, with a
stress tester. The reason that is necessary, is because memtest86+
doesn't do a good job of stressing the hardware and uncovering all
possible transient faults. And sitting idle in the desktop, it
takes hundreds of hours of runtime, to spot even one error. A stress
tester program, reduces that discovery time to only a few hours.

I use Prime95 from mersenne.org/freesoft for that, but considering
your machine will have 8GB, it's getting a bit difficult to
cover all of the memory. You can run multiple copies of Prime95
on a computer, but I've noticed instability in Windows when I do that.
It just doesn't like to run too many copies, even when memory
management should be allowing it. Those tests were done on WinXP.
Perhaps Vista/Windows7/x64 will behave better ?

HTH,
Paul


On Fri, 27 May 2011 05:59:11 -0400, Paul <nospam@xxxxxxxxxx> wrote:

JoSSo wrote:
Tanx,

Yes it is using DDR3, currently running 2*2GB 1066 MHZ DDR3.
So upgrading to 2 * 4GB on 1066 is possible.

However will it run with 2 * 4GB 1330 MHz?

Gr
Jos
That is a function of the chipset.

Is the chipset PM45 ?

If it is PM45, you can read about it here. The block diagram
says DDR3-1066 is the fastest speed PM45 can run (page 13).

http://www.intel.com/Assets/PDF/datasheet/320122.pdf

If you install DDR3-1333, and the chipset cannot run
that fast, then it will run the memory at DDR3-1066 instead.

Paul
.



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