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I have an old dell dimension v450 that has 3 ram slots each with 128mb ram modules. Iwant to upgrade the ram with 512mb pc100 sdram but when I do the computer wont even boot up

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Your motherboard is not compatible with more than 128MB of RAM pre slot so max u can place 384mb of ram if u place more than that your motherboard will not recognise of it wont start

Posted on Feb 01, 2010

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IBM T23 wont turn on after adding new RAM


Hi - according to memory suppliers your T23 has the following memory capacity / requirements:

  • IBM ThinkPad T23 maximum RAM capacity: 1GB
  • Your IBM has Two (2) memory slots or sockets
  • Module upgrade PIN count is: 144-PIN
  • The memory speed is: SDRAM 133MHz, PC133
  • The laptop DIMM type for the ThinkPad T23 is: SODIMM, SO-DIMM, Small Outline DIMM
  • Non ECC

If you are meeting these requirements, you may have a defective module.

Also, according to Lenovo's page on the machine:

Memory
The system has 128MB or 256MB of memory standard and can be configured for up to 1GB of addressable memory. Memory options up to 512MB SDRAM SO DIMMs each can be added in the two available slots for memory expansion. The standard 128MB of memory is expandable up to 640MB and the 256MB of memory is expandable up to 768 MB of addressable memory with 64, 128, 256, or 512MB SO DIMMs without removing the 128MB SO DIMM that is standard in one of the internal slots for memory. For customers that need the maximum 1GB to which memory can be expanded, it is necessary to replace the 128MB or 256MB card with a 512MB card plus add another 512MB card in the extra slot. Only 133MHz DIMM memory can be used in this system. The use of 100MHz DIMM memory is not supported in the T23 systems.

This means yo can trouble shoot the 512MB modules individually by installing one of the original 128MB modules and one of the new 512MB modules (for a total system memory of 640MB). If it does not boot, try again with the other 512MB module. This will help you identify a defective module that may be preventing the machine from booting.

I hope this helps & good luck!

Sep 28, 2012 | IBM ThinkPad T23 Notebook

1 Answer

Types of sdram


PC66 SDRAM
PC66 SDRAM is the original module speed of SDRAM. PC66 SDRAM was the earliest version of SDRAM and therefore came in a number of smaller megabyte sizes than later versions. Most early motherboards were rated for PC66 SDRAM. The available sizes are 32MB (megabytes), 64MB and 128MB.
PC100 SDRAM


PC100 SDRAM was released after PC66 SDRAM and runs at a higher speed. It has the same number of pins as the earlier memory module and is capable of utilizing the same RAM slot. The only difference when installing this SDRAM in compatible computers with older systems (PC66 slots) is that the SDRAM will run at a slower speed. PC100 RAM comes in sizes such as 32MB, 64MB, 128MB, 256MB and 512MB.
PC133 SDRAM

The last generation of SDRAM is PC133. The PC133 memory provided a speed upgrade and comes in larger sizes than previous generations of SDRAM. PC133 modules are backward compatible with older SDRAM slots. The PC133 memory, however, will be forced to run at the slot's slower bus speed (PC66 or PC100). The memory comes in sizes like 128MB, 256MB, 512MB and 1024MB.


Mar 03, 2011 | Computers & Internet

1 Answer

Whats my sdram capacity


HP Pavilion 9694C memory upgrade specification, Pavilion 9694C maximum memory, memory speed, and memory upgrade options. Upgrade memory on HP Pavilion 9694C upto a maximum of 256 MB
PC100/133 SDRAM DIMMs, with maximum 128MB per slot in 2 memory slots. The HP Pavilion 9694C takes the PC100/133 SDRAM DIMMs Memory Type.

Hope that helps.

Feb 16, 2011 | HP Pavilion 9694C PC Desktop

1 Answer

Dell Optiplex GX110 currently runs 128mb sdram pc125 cl3.0 . Am I correct to assume maximum upgrade would be 2 x 256mb sdram pc133 non-ecc unbuffered 3.3v ? Maximum memory per slot being 256mb ? Is my...


If I remember correctly, that Dell has two memory module slots, so 2 512 mb modules of non-ecc pc133 memory is the max that the system board will allow.
This is controlled by the system board chipset, and not by the bios.

Dec 15, 2010 | Dell OptiPlex GX110 PC Desktop

3 Answers

I need to know how much ram my motherboard will be able to run without burning up? I have an Emachines t1090 w/ Windows XP, 900MHz Intel Celeron Processor, 128MB SDRAM, CD-ROM 48x Max. CD-Drive, 20GB Hard...


The max for your system is 512MB. You have two memory slots and one has a 128MB chip so if you want 512MB, you need two 256MB chips and throw away the 128MB.
At Newegg, a 256MB chip is $42+ shipping of $1. I'd consider getting a new computer instead.
I don't think memory upgrade will tax your system cooling.

Sep 09, 2010 | E-Machines T1090 PC Desktop

2 Answers

Enquiries on maximum supported hard disk capacity and memory


Dell Optiplex 760 Vista
Max CPU Intel Q9550
Max RAM 8GB RAM
Largest HDD Shipped 1TB (Will likely Support 2TB)

Optiplex GX260
Max Intel Northwood 2.53 GHz - 533
Max RAM 2GB
Largest HDD Shipped was 200GB (Will likely support 500GB)

Dell Dimension XPS D300
Max CPU 333 Pentium II
Max RAM 384MB
Largest HDD Shipped 16GB (Will likely Support up to 80GB)

Dell Dimension XPS M
Max CPU 166S
Max RAM 64 MB
Largest HDD Shipped 4.3 GB (Max HDD likely 20GB)

Feb 09, 2010 | Dell OptiPlex GX260 PC Desktop

1 Answer

New ram memory on dell dimension celeron trying to


You should check with the folks at Dell since whoever wrote their technical manuals for this machine can't do basic math. There are 2 memory slots and each can handle a maximum capacity of 512MB, yet they claim the maximum capacity for the machine is 2GB instead of 1GB. Using 512MB modules would probably work.

Jul 06, 2009 | Dell Computers & Internet

1 Answer

Can work Memory SDRam 128MB PC100 with SDRam 512 MB PC133


It wont work, it will hang ur system. Ur motherboard supports but using Mutli-frequencies RAM is not possible, either u use SDRAM 512 BM PC133 or ur 64/128 PC100 RAM, You cant use all together.

Apr 20, 2009 | QDI Group QDI Advance 10T Motherboard

2 Answers

Ram upgrade


you need to make sure the ram is compatable, it looks like an old machine so chances are its using sdram pc100,
check the ram your trying to make sure its not pc133. let me know what each piece of ram has on its sticker

Mar 23, 2009 | Dell OptiPlex GX200 PC Desktop

2 Answers

Memory upgrade


Dell dimension 4100's only support a maximum of 512MB ram.

2 - 256MB PC133 SDRAM modules - 1 in each slot

Nov 20, 2008 | Dell Motherboard Dimension 4100 Intel 815...

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