As my system is slow for my programming I thought to upgrade my system to little higher from the existing 128 MB 2100 DDR with 256 MB 2700 DDR in a extra slot. This worked better but there was huge processor sound comes for a while. And it was not good enough for my use. Then I bought 512 MB 2700 DDR and replaced with 128 MB 2100 DDR. I am not hearing any noise in my first 30 minutes and it looks pretty good speed. But I was little scared of what is going to happen next, as it may cause some problems to the motherboard, as I heard some rumors on that. Please tell your valuable opinion on keeping the configuration or going back to old configuration.

I am seeing CPU clock speed as 1694, FYI.

My system's scan after 512 MB replacement:
OS Information:
PropertyValue
OS Name Microsoft Windows XP Professional|C:\WINDOWS|\Device\Harddisk0\Partitio n2
Service Pack 2.0
OS Manufacturer Microsoft Corporation
Windows Directory C:\WINDOWS


Processor:
PropertyValue
Current Clock Speed 1694
Description x86 Family 15 Model 2 Stepping 7
Manufacturer GenuineIntel
Name Mobile Intel(R) Pentium(R) 4 - M CPU 1.70GHz


Memory (RAM):
PropertyValue
Bank Label DIMM 1
Capacity 536870912

Bank Label DIMM 2
Capacity 268435456

Total Memory Deteced in Hardware: ~768 MB
Memory Reported to Operating System: 703MB

Disk Drives:
PropertyValue
Description Disk drive
Manufacturer (Standard disk drives)
Model WDC WD800UE-00KVT0
Media Type Fixed hard disk media
Size 80023749120 (~75 GB)
Number of Partitions 2


Installed Printers:
PropertyValue
Name PDF995
Port Name PDF995PORT
Default True
Driver Name PDF995 Printer Driver


Motherboard:
PropertyValue
Manufacturer Hewlett-Packard
Model
Name Base Board
Part Number
Product HP NoteBook PC
Serial Number None
Version HP Notebook PC


BIOS:
PropertyValue
Manufacturer Phoenix Technologies Ltd.
Name PhoenixBIOS 4.0 Release 6.0
Release Date 20050107000000.000000+000
Version PTLTD - 6040000


Monitor:
PropertyValue
Description Default Monitor
Name Default Monitor
Screen Height 768
Screen Width 1024


Keyboard:
PropertyValue
Description Standard 101/102-Key or Microsoft Natural PS/2 Keyboard


Pointing Device:
PropertyValue
Manufacturer Synaptics
Name Synaptics PS/2 Port Pointing Device


Sound Card:
PropertyValue
Manufacturer Hewlett Packard
Description Conexant AC-Link Audio
Device ID PCI\VEN_10B9&DEV_5451&SUBSYS_002A103C&REV_02\3&61A AA01&0&30

Manufacturer Microsoft
Description Unimodem Half-Duplex Audio Device
Device ID MODEMWAVE\0\{DE917DD5-003E-4268-B73B-F6071631C575}


Video Card:
PropertyValue
Adapter Compatibility ATI Technologies Inc.
Adapter RAM 67108864
Description IGP 340M
Installed Display Drivers ati2dvag.dll
Driver Version 5.1.2600.0
Driver Date 8/16/2002 7:31:00 AM
Video Mode Description 1024 x 768 x 4294967296 colors


DirectX Installation:
PropertyValue
Version 6.03.01.0148


Modem:
PropertyValue
Model Conexant 56K ACLink Modem
Name Conexant 56K ACLink Modem

Model Standard Modem over IR link
Name Standard Modem over IR link


Network Adapters:
PropertyValue
Description National Semiconductor Corp. DP83815/816 10/100 MacPhyter PCI Adapter - Packet Scheduler Miniport
Description Packet Scheduler Miniport
Description Infrared Port
Description 1394 Net Adapter
Description RAS Async Adapter
Description NETGEAR MA401 Wireless PC Card - Packet Scheduler Miniport
Description Packet Scheduler Miniport
Description WAN Miniport (L2TP)
Description WAN Miniport (PPTP)
Description WAN Miniport (PPPOE)
Description Direct Parallel
Description WAN Miniport (IP)
Description Packet Scheduler Miniport
Description NETGEAR MA401 Wireless PC Card - Packet Scheduler Miniport

External Ports:
PropertyValue
External Reference Designator
External Reference Designator
External Reference Designator
External Reference Designator COM1
External Reference Designator FIR
External Reference Designator Printer
External Reference Designator KBD
External Reference Designator Mouse
External Reference Designator
External Reference Designator MIC_IN
External Reference Designator LINE_IN
External Reference Designator LINE_OUT
External Reference Designator USB1
External Reference Designator USB2

Expansion Slots:
PropertyValue
Slot Designation PCI Slot 1
-------------------------------------------------------

************************************************** *******************
My Previous RAM info:
-------------------------
Memory (RAM):
PropertyValue
Bank Label DIMM 1
Capacity 134217728

Bank Label DIMM 2
Capacity 268435456

Total Memory Deteced in Hardware: ~384 MB
Memory Reported to Operating System: 319MB

Your replies are greatly appreciated.

It looks fine from that scan. In the first case: when you mix RAM speeds all RAM will go to the slowest: so your 2700 ran at 2100.

The discrepancy in the count (-64) is the Memory used by your on-board graphics chip.

I am not sure what you mean by huge processor sound unless it is a heat sensitive fan that is going faster?

Also the upgrade of RAM does not always show a significant speed up in processing.

To achieve a significant upgrade you would need to upgrade the CPU.

Thank you very much, Jephree. It was an immediate response. Thanks again for the detailed response.

Please tell me, Is my system will be OK with the new configuration of two 2700 DDR Rams of 512 & 256? I am more worried on this as my Mother Board supports 2700 RAM speeds or Do I need to make any changes in the BIOS settings if there are any problems with RAM.

Regarding the "processor sound", I think it is the fan sound located near the processor. But I don't know why I used get this fan sound very frequently when I am using variable speeds (2100 & 2700). Anyhow I appreciate your quick reply.

Originally Posted by jephree

It looks fine from that scan. In the first case: when you mix RAM speeds all RAM will go to the slowest: so your 2700 ran at 2100.

The discrepancy in the count (-64) is the Memory used by your on-board graphics chip.

I am not sure what you mean by huge processor sound unless it is a heat sensitive fan that is going faster?

Also the upgrade of RAM does not always show a significant speed up in processing.

To achieve a significant upgrade you would need to upgrade the CPU.

That RAM should be fine. What is the exact model of HP?

If you have a variable speed fan on the CPU the faster it runs the noisier it would be.

It runs faster due to a heat increase. This might be triggered by the RAM but I am not certain.

An increase in the RAM bus might have upped your FSB so that the CPU is actually running faster than before; but I am just speculating.

Originally Posted by jephree

That RAM should be fine. What is the exact model of HP?

If you have a variable speed fan on the CPU the faster it runs the noisier it would be.

It runs faster due to a heat increase. This might be triggered by the RAM but I am not certain.

An increase in the RAM bus might have upped your FSB so that the CPU is actually running faster than before; but I am just speculating.

Thank you for your reply post.
My HP Model is Pavilion ze4100 Series. Please also see my above DAL scan for processor info, as there are many processors under this model.

Pavilion ze4100

http://h10025.www1.hp.com/ewfrf/wc/p...&lang=en&cc=us

NOTE: HP Pavilion ze5300, ze5200, ze4300, ze4200, and ze4100, HP Compaq nx9010, nx9005
and nx9000, Compaq Evo Notebook N1050v and N1010v, and Compaq Presario 2500, 2100, and
1100 notebooks use only DDR266 SDRAM modules. Using the wrong type of module prevents the
notebook from booting.

http://h10032.www1.hp.com/ctg/Manual/c00246219.pdf