Adding sdram

Posted on 2001-08-02
Last Modified: 2013-11-10
I have a Hp pavilion4483, Intel Celeron  .433 MHz.  . I had 96mb sdram that came with it from the store, only 2 168 pin dimms on it. I think a stick of 64mb and one of 32mb. I bought a stick of 128mb sdram pc133, and took out both old rams and put 128 in the top slot and the 64mb stick back in the bottom slot. Im wondering if its wise to have 128 in one slot and 64 in the other on my pc? The hp web site for pavilion says my 64mb sdram is 66mhz, but this new 128 is a higher mhz. My system recognizes that i now have 192mb sdram. also, will my system use all the ram  or is it recognizing it without actually  using all of it?  Below are some specs from hp site for my system. Thanks in advance. Chris
Base processor and speed
Intel Celeron 433 MHz Processor


RAM (standard):
 96 MB (SDRAM)
 256 MB (2 x 128 MB)
 66 MHz synchronous
 2 - 168 pin DIMMs
 16, 32, 64, or 128 MB DIMMs
Pairs Required?
Type Supported:
 SDRAM, 66 MHz, Intel PC SDRAM unbuffered DIMM specification,
revision 1.0 compliant

Level 1 (Primary):
 32 KB (on processor)
Upgrade Sockets:
Level 2:
 128 KB (on motherboard)

Hard drive
6.4 GB (3.5-inch form factor)

CD-ROM drive
 32x maximum speed
Access Speed:
 75 ms
Transfer Rate:
 2.4-4.8 MB/sec
Bios: Falcon2 software build ID 2.15.15
OS  Windows 98
Question by:chrissnow

Accepted Solution

JJ2 earned 50 total points
ID: 6343898
Yes, once the CMOS recognized the amount of Memory that your machine has, it communicates with the Operating system to allow the latter to make use of all its resources. Though the speed of the additional memory chip(PC-133)will not be utilized as 133 but rather only system bus clock speed supported by the Microprocessor(Intel Celeron)which is 66 Mhz. As long as your system works fine and doesn't "hangs" then you don't seem to have any problem.

Expert Comment

ID: 6343902
it your system is coping fine with the new ram, then it is fine, but your pc133 128 MB ram is not perfroming at its peak. Supposingly that it can run up to 133 MHz, but due to the bootleneck in your mobo that can go up to 66 MHZ, it is actually running lower than 133 MHZ.


Expert Comment

ID: 6343906
it your system is coping fine with the new ram, then it is fine, but your pc133 128 MB ram is not perfroming at its peak. Supposingly that it can run up to 133 MHz, but due to the bootleneck in your mobo that can go up to 66 MHZ, it is actually running lower than 133 MHZ.

Complete VMware vSphere® ESX(i) & Hyper-V Backup

Capture your entire system, including the host, with patented disk imaging integrated with VMware VADP / Microsoft VSS and RCT. RTOs is as low as 15 seconds with Acronis Active Restore™. You can enjoy unlimited P2V/V2V migrations from any source (even from a different hypervisor)

LVL 14

Expert Comment

by:Don Thomson
ID: 6345052
The PC-133 SDRAM  will run UP TO that speed but your other system component will restrict it's actual speed to 66mhz. Like running a Formula 1 race car at 60 MPH rather than 120 MPH  - A lot less wear and tear
LVL 13

Expert Comment

ID: 6345680
"Pairs Required?

This entry is the key.  While HP assumes you know what it means, they are talking about whether you can mix different sizes or memory sticks.  If the answer here was 'yes' then the computer would only be able to take, say, two 128MB sticks.

Since the answer is 'no' to pairs required, the system is perfectly capable of correctly using any combination of memory sizes up to its maximum supported size of 128MB per stick.

Author Comment

ID: 6346345
Thanks  for the info, was hoping this liitle machine would be ok with the new ram, but one can never tell.

Im trying to get this pavilion to at least keep up to par as long as possible. Im sure ill be back soon.

Thanks Again.

Featured Post

Migrating Your Company's PCs

To keep pace with competitors, businesses must keep employees productive, and that means providing them with the latest technology. This document provides the tips and tricks you need to help you migrate an outdated PC fleet to new desktops, laptops, and tablets.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
hp deskjet 1055 8 71
laptop estate analysis 5 72
Difference bet. 3G v 4G RAM on Win7 32-bit 5 87
Component is listed with a Protocol more than once 3 27
We recently endured a series of broadcast storms that caused our ISP to shut us down for brief periods of time. After going through a multitude of tests, we determined that the issue was related to Intel NIC drivers on some new HP desktop computers …
Moving your enterprise fax infrastructure from in-house fax machines and servers to the cloud makes sense — from both an efficiency and productivity standpoint. But does migrating to a cloud fax solution mean you will no longer be able to send or re…
Email security requires an ever evolving service that stays up to date with counter-evolving threats. The Email Laundry perform Research and Development to ensure their email security service evolves faster than cyber criminals. We apply our Threat…
Finds all prime numbers in a range requested and places them in a public primes() array. I've demostrated a template size of 30 (2 * 3 * 5) but larger templates can be built such 210  (2 * 3 * 5 * 7) or 2310  (2 * 3 * 5 * 7 * 11). The larger templa…

785 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question