RAM Upgrade

By Chen108 ·

i have p3 1 Gb processor,256 Mb ram.
And i would like to have more ram.
My specialist told me my pc can have additional 500 Mb ram.So it could be totaly 756 Mb with mine.

But one man here,told me,that is not enough to for pc to hold that amount (of ram),but also pc must "see that amount".

I dont understand,what he mean by that.
Can u help me?

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What it means is that the Computer or M'Board in this case

by OH Smeg In reply to RAM Upgrade

Must support the Size of the RAM Sticks that you fit to it as well as the Density.

If you have a Low Density Memory Module in SD RAM it has RAM Chips on Both sides of the Printed Circuit Board that the RAM is part of. The same stick of High Density only has Ram Chips on one side so some M'Boards can see the Low Density but not the High Density. So you need to look at the biggest RAM Stick that your M'Board can support and the type. If you fit something bigger not only will you be wasting your money but the system will be unreliable.

Not only do you need to look at the Maximum Size RAM Stick you can use with your M'Board you also need to see how much it can have loaded. For instance some Dell M'Boards will accept 512 MEG Per Stick and have 3 RAM Slots but will only address the first 512 MEG of RAM so the remaining 2 Slots while populated are not used.

Post back with your M'Board make & Model or the Make & Model of your computer and we will be able to tell you what RAM it uses and how much you can put into it.


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Make and Model of my PC

by Chen108 In reply to What it means is that the ...

Motherboard Properties
Motherboard ID <DMI>
Motherboard Name Compaq Deskpro

Front Side Bus Properties
Bus Type Intel GTL+
Bus Width 64-bit
Real Clock 133 MHz
Effective Clock 133 MHz
Bandwidth 1067 MB/s

Memory Bus Properties
Bus Width 64-bit
Real Clock 133 MHz
Effective Clock 133 MHz
Bandwidth 1067 MB/s

Chipset Bus Properties
Bus Type Intel Hub Interface
Bus Width 8-bit
Real Clock 67 MHz (QDR)
Effective Clock 267 MHz
Bandwidth 267 MB/s

Motherboard Manufacturer
Company Name Hewlett-Packard Company

CPU Properties
CPU Type Intel Pentium IIIE, 1000 MHz (7.5 x 133)
CPU Alias Coppermine, CuMine, A80526
CPU Stepping cD0
Instruction Set x86, MMX, SSE
Original Clock 1000 MHz
L1 Code Cache 16 KB
L1 Data Cache 16 KB
L2 Cache 256 KB (On-Die, ATC, Full-Speed)

CPU Physical Info
Package Type 370 Pin FC-PGA
Package Size 4.95 cm x 4.95 cm
Transistors 28.1 million
Process Technology 6M, 0.18 um, CMOS
Die Size 95 mm2
Core Voltage 1.75 V
I/O Voltage 3.3 V
Typical Power 11 - 25 W (depending on clock speed)
Maximum Power 16.0 - 37.5 W (depending on clock speed)

CPU Manufacturer
Company Name Intel Corporation
CPU Utilization
CPU #1 0 %

CPUID Properties
CPUID Manufacturer GenuineIntel
CPUID Revision 0000068Ah
IA Brand ID 02h (Intel Pentium III)
Platform ID 05h (Socket 370)
IA CPU Serial Number Unknown
Microcode Update Revision 1
HTT / CMP Units 0 / 0

Instruction Set
64-bit x86 Extension (AMD64, EM64T) Not Supported
Alternate Instruction Set Not Supported
AMD 3DNow! Not Supported
AMD 3DNow! Professional Not Supported
AMD Enhanced 3DNow! Not Supported
AMD Extended MMX Not Supported
Cyrix Extended MMX Not Supported
IA-64 Not Supported
IA MMX Supported
IA SSE Supported
IA SSE 2 Not Supported
IA SSE 3 Not Supported
CLFLUSH Instruction Not Supported
CMPXCHG8B Instruction Supported
CMPXCHG16B Instruction Not Supported
Conditional Move Instruction Supported
MONITOR / MWAIT Instruction Not Supported
RDTSCP Instruction Not Supported
SYSCALL / SYSRET Instruction Not Supported
SYSENTER / SYSEXIT Instruction Supported
VIA FEMMS Instruction Not Supported

CPUID Features
36-bit Page Size Extension Supported
Address Region Registers (ARR) Not Supported
CPL Qualified Debug Store Not Supported
Debug Trace Store Not Supported
Debugging Extension Supported
Fast Save & Restore Supported
Hyper-Threading Technology (HTT) Not Supported
L1 Context ID Not Supported
Local APIC On Chip Supported
Machine Check Architecture (MCA) Supported
Machine Check Exception (MCE) Supported
Memory Configuration Registers (MCR) Not Supported
Memory Type Range Registers (MTRR) Supported
Model Specific Registers (MSR) Supported
Page Attribute Table (PAT) Supported
Page Global Extension Supported
Page Size Extension (PSE) Supported
Pending Break Event Not Supported
Physical Address Extension (PAE) Supported
Secure Virtual Machine Extensions (Pacifica) Not Supported
Self-Snoop Not Supported
Time Stamp Counter (TSC) Supported
Virtual Machine Extensions (Vanderpool) Not Supported
Virtual Mode Extension Supported

Physical Memory
Total 254 MB
Used 190 MB
Free 63 MB
Utilization 75 %

Swap Space
Total 713 MB
Used 545 MB
Free 167 MB
Utilization 76 %

Virtual Memory
Total 967 MB
Used 735 MB
Free 231 MB
Utilization 76 %

Physical Address Extension (PAE)
Supported by Operating System Yes
Supported by CPU Yes
Active No

Memory Module Properties
Module Name Infineon HYS64V16300GU-7.5
Module Size 128 MB (1 rank, 4 banks)
Module Type Unbuffered
Memory Type SDRAM
Memory Speed PC133 (133 MHz)
Module Width 64 bit
Module Voltage LVTTL
Error Detection Method None
Refresh Rate Normal (15.625 us), Self-Refresh

Memory Timings
@ 133 MHz 3.0-3-3-6 (CL-RCD-RP-RAS)
@ 100 MHz 2.0-2-2-5 (CL-RCD-RP-RAS)

Memory Module Features
Early RAS# Precharge Not Supported
Auto-Precharge Supported
Precharge All Supported
Write1/Read Burst Supported
Buffered Address/Control Inputs Not Supported
Registered Address/Control Inputs Not Supported
On-Card PLL (Clock) Not Supported
Buffered DQMB Inputs Not Supported
Registered DQMB Inputs Not Supported
Differential Clock Input Not Supported
Redundant Row Address Not Supported

Memory Module Manufacturer
Company Name Infineon Technologies AG

North Bridge Properties
North Bridge Intel Solano i815E
Revision / Stepping 02 / A2
Package Type 544 Pin BGA
Package Size 3.5 cm x 3.5 cm
Core Voltage 1.85 V
In-Order Queue Depth 4
Tualatin CPU Not Supported

Memory Timings
CAS Latency (CL) 3T
RAS To CAS Delay (tRCD) 3T
RAS Precharge (tRP) 3T
RAS Active Time (tRAS) 7T
Row Cycle Time (tRC) 9T

Memory Slots
DRAM Slot #1 128 MB (SDRAM)
DRAM Slot #2 128 MB (SDRAM)

Integrated Graphics Controller
Graphics Controller Type Intel i752
Graphics Controller Status Enabled
Shared Memory Size 1 MB

Chipset Manufacturer
Company Name Intel Corporation

BIOS Type Compaq

Can u now help me?

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Well just the Name in this case Compaq and the Model Number

by OH Smeg In reply to Make and Model of my PC

Would be sufficient here.

You have a HP Custom BIOS of some description with 2 RAM Slots that take SD RAM at 133 MHZ Speed with a Pentium 3 Socket 370 CPU of 1,000 MHZ with a FSB of 133 MHZ.

The Chip Set type is a Intel 815E and there where a lot of different M'Boards made with this Chip Set.

However this should accept High Density SD RAM with a Speed of 133 MHZ and it should be safe to use 2 X 512 MEG Sticks of RAM but if you wish you can mix a 256 and 512 MEG Stick.

You can find the Compaq Service Manuals here on HP's Web Site but you will have to enter the Model Number

Only possible problem is the OS in use here if it is 98 or 98 SE it supports 712 MEG of RAM and if you add more there is a Hack that you need to apply to get the OS to make use of the extra RAM. If it is XP 32 Bit you can use 3 GIG of RAM which this M'Board will not support so you can Max out the M'Board with RAM and not even be close to exceeding them OS's capability to use the RAM.


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OS is Win 2000 professional ..

by Chen108 In reply to Well just the Name in thi ...

built on NT technology.Service pack 4,roll up 1.

Please,so what is your answer now? :-)

Thank u.
Have a good days


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Well as NT or W2k is essentially XP with a few less tweaks

by OH Smeg In reply to OS is Win 2000 profession ...

You don't have a Issue with excess RAM you can fit as much as the M'Board can carry and the OS will use it all.

As for how much you can fit this still depends on the actual M'Board so I need the Model Number of the Compaq Computer. Something like Pavilion and a series of numbers.

If you don't know the Compaq Model Number post the BIOS String that appears on the POST Screen this is a series of Numbers and Letters that Identify the M'Board and BIOS Version. You may need to turn off the Compaq Splash Screen to see this though. The sticker on the case if it is in the original Case is by far the easiest way to proceed from here.


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Its Compaq ..

by Chen108 In reply to Well as NT or W2k is esse ...

Model 0688h

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0688h is not a Part Number or Model Number recognized by HP

by OH Smeg In reply to Its Compaq ..

Look here on HP's web Site for parts and Driver Availability

As HP now own Compaq you need to look to HP for answers here so you need to look at the Model of the Computer something like Evo something, Proliant something, Pavillion something, Pesario something.

That is the Model Name & Number.


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Ram -

by shhite In reply to RAM Upgrade

This website will tell you how much memory you have in each slot and what the max is you can upgrade too.

Click the check your system button and follow the prompts. The software does check your motherboard so the kind of memory and how much you can use is guaranteed to work if you use their tool.

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by Chen108 In reply to Ram -

Now i can post a reply.I dunno what it was last time i cant post more in this topic,it was written by red letters,that i cant.Ok,i will not bother with it.

Anyway,i tried it,but still dont know exact model of my pc,so i dont know ..

Good luck :-)

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OK working on the assumption that the M'Board isn't original

by OH Smeg In reply to RAM Upgrade

Or the case has been changed and you do not have a Model Number about the only alternative left is to try something like CTBIOS available here

Or Sisoft Sandra available here

Both of these can be used to identify the M'Board or the Model of the computer.

Post back when you have a result from one of them.


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