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Windows XP SP3 does not recognize new RAM. I upgraded from 2GB to 6GB. Motherboard is Intel D975XBX. 2 1GB modules are in DIMMs 0 (blue). 2 2GB modules are in DIMMs 1 (black). Windows System Info reads only 3.24 GB of RAM. I have tried other configurations of the modules, following Intel's instructions for their placement carefully. I never get more then the 3.24 GB, even with only the 2 2GB modules installed by themselves (in DIMMs 0). So, those modules are working. RAM of course goes down to 1.9 GB with only the two 1GB modules in. I haven't tried putting in 3 modules--didn't see the point. What can I do to get Windows to recognize the RAM? Gratefully, Steve Olson

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For a full outline on the various ersions of windows and their memory uses/limitations, try
http://msdn.microsoft.com/en-us/library/aa366778(VS.85).aspx
The info is very technical, but may be useful for some people.

Posted on Sep 17, 2008

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XP prof (SP3) 4G mem limmit
(3.2G adressable)

Upgrade to x64 edition of Windows which can support more than 4 GB of memory.





Az.

Posted on Sep 17, 2008

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1 Answer

What are the compatible RAM modules?


It uses up to four DDR3 1066MHz SDRAM DIMMS

May 28, 2014 | Dell Mobile Precision M6400 Computer...

1 Answer

Installed 4GB upgrade in optiplex 330 still only 2GB memmory


Your BIOS should automatically detect your new RAM when your computer starts, try starting your computer after removing your old RAM module, if it starts, you need to update your BIOS to use 4GB. If it doesn't start, you either have a faulty RAM module or a faulty connector on your motherboard. Insert the new RAM module into the slot the old RAM module was in, if your computer still refuses to start, you have a faulty RAM module which should be returned, if it does start, it's the connector on the motherboard, and only replacing the entire board will fix the problem. However, it's worth noting that your motherboard will only support RAM modules of 2GB or less, the above was written with the assumption you're adding an additional 2GB module to your Dell computer.

Dec 24, 2011 | Dell OptiPlex 330 Desktop Desktop Computer...

1 Answer

Fiteed new quad core CPU and 4gb of Ram, when started up getting no signal detected on the monitor. Can anyone help?


Let's back up a second.

A) What HP model is it? (P/N. Product Number. Back of desktop computer tower)
B) What model number of Intel quad core is it?
C) What are the manufacturer ID number/letters on the ram memory module/s?

I need to know what Northbridge chip is used on the motherboard, to know if it will support the particular Intel quad core you're trying to use.
This I can hopefully obtain from HP Support, by looking at the specifications for the motherboard.

(This technology does not apply to motherboards that support the Intel Core i3, Core i5, Core i7, and Core i9 processors)

The Northbridge chip is part of the motherboard chipset.
So aptly named, because on a desktop computer motherboard it sits to the 'North', for one.
(Under the Processor)

[ Chip and Chipset are slang terms for I.C.
Integrated Circuit,

http://en.wikipedia.org/wiki/Integrated_Circuit

The Northbridge chip handles the faster capabilities of the computer.
It handles the Processor, Ram Memory, and High-speed graphics.

AGP and PCI-Express are high-speed graphics technology.
A graphics card plugged into a PCI slot, and Integrated Graphics, is Not high-speed graphics.

The Southbridge chip handles the slower capabilities of the computer.

Motherboard Diagram;

http://en.wikipedia.org/wiki/File:Motherboard_diagram.svg

List of Intel Chipsets, and more specifically the one's that can handle Intel quad core processors,

http://en.wikipedia.org/wiki/List_of_Intel_chipsets#Core_2_chipsets

Secondly;
Make sure the Ram Memory you installed is Compatible.
If the motherboard supports 4GB of ram, make sure it is in the correct ram slots if using two sticks of ram, or four sticks.

There HAS to be a ram memory module ('Stick') in Slot 1. (DIMM 1)
EACH ram memory slot has a Maximum Amount.

For example if there are 4 ram slots, and the Maximum Total Amount of ram memory is 4GB, each ram slot may have a maximum of 1GB.
It may, or may not be that you can use Slot 1 and Slot 2, and use two 2GB sticks.

Third:
Always go slow when upgrading.
Install the Processor first, boot the computer up, see how it works.

THEN shut the computer down, unplug from power, observe Anti-Static Precautions, and install 2GB of ram memory.

Works?
Install the other 2GB.
BIOS has to recognize the changes.

Fourth:
Are you sure your Power Supply is adequate to support the quad core, and the added ram memory?

Post back in a Comment.

Regards,
joecoolvette

Jul 24, 2011 | HP PC Desktops

1 Answer

Acer aspire m5100, AMD Athlon 64bit x2 dual core processor 5000+ 2.60Ghz. Win Vista Business 64bit. When i upgrade and put more than 3GB of ram into the machine, it turns off the lan and my display driver...


Acer official site says:-
Up to 4 GB DDR2 533/667/800 MHz SDRAM
(dual-channel support on four DIMMs)

Try these bus speeds and for dual-channel support read this article :-

Dual-channel architecture requires a dual-channel-capable motherboard and two or more DDR, DDR2 SDRAM, or DDR3 SDRAM memory modules. The memory modules are installed into matching banks, which are usually color coded on the motherboard. These separate channels allow each memory module access to the memory controller, increasing throughput bandwidth. It is not required that identical modules be used, but this is often recommended for best dual-channel operation. It is possible to use a single-sided module of 512 MB and a double-sided module of 512 MB in dual-channel configuration, but how fast and stable it is depends on the memory controller.

If the motherboard has two pairs of differently colored DIMM sockets (the colors indicate which bank they belong to, bank 0 or bank 1), then one can place a matched pair of memory modules in bank 0, but a different-capacity pair of modules in bank 1, as long as they are of the same speed. Using this scheme, a pair of 1 GB memory modules in bank 0 and a pair of matched 512 MB modules in bank 1 would be acceptable for dual-channel operation.

Modules rated at different speeds can be run in dual-channel mode, although the motherboard will then run all memory modules at the speed of the slowest module. Some motherboards, however, have compatibility issues with certain brands or models of memory when attempting to use them in dual-channel mode. For this reason, it is generally advised to use identical pairs of memory modules, which is why most memory manufacturers now sell "kits" of matched-pair DIMMs. Several motherboard manufacturers only support configurations where a "matched pair" of modules are used. A matching pair needs to match in.

Good luck

Rate the solution if got help

Dec 06, 2010 | Acer Aspire M5100 AM5100-U5313A AMD...

1 Answer

Can you mix 1gb and 2gb dimms in the same machine (for a total of 6gb)? I added two 2gb 1066 DDR2 dimms (''OCZ'') to a PC that already had two 1066 DDR2 1gb dimms (''Kingston''). I moved the 1gb dimms to...


Your MB is AM3 with 128MB DDR3-1333 built-in, four 1.8 Volt DDR2-1200+ depending on cpu. Have you enabled cpu 64 bit extensions? Tried slowing down your memory bus?
My ASUS use dual channel for dual core cpu. I have 2 yellow and 2 black dimm sockets. Both dimms in yellow is single channel, one in yellow and one in black is dual channel. Might try 2,1,2,1 rather than 2,2,1,1 order. If only your 2 1GB dimms are seen then why do you get 4 GB from 1GB+1GB? Sounds like sockets 1,2 are giving you 4GB and 3,4 don't work? Are the 1GB+1GB in 3,4 visible if the dimms in 1,2 are removed? Per Gigabyte page your AMD Phenom II 920 is AM2+ : "Note: Due to AMD AM2+ CPU limitation, memory module DDR2 1066 or above speed is only supported by 1 dimm per channel." Per AMD (which does not show your cpu, AM3 cpu fit AM3 or AM2+ socket and support ddr2 and ddr3, AM2+ cpu only work in AM2+ socket and support ddr2 only.

Oct 16, 2009 | PC Desktops

1 Answer

I have recently upgraded my ram from 516 to 2 x


Hello,
Try installing one module only. (You may have to try in first slot, and then if it does not work, in the second slot.) If the 1gb module is recognized install the second one.
If all else fails, the modules may be incompatible with your motherboard, or 1gb exceeds the capacity of the slot.

Hope it helps

Aug 29, 2009 | PC Desktops

5 Answers

Can i install windows vista ultimate in ibm netvista 8303 with 768 MB Ram, 64 Graphic Card and 2.0 GHz Procesor?


it will surely install but it will be very slow in the operation because your system does not meets the minimum requirements you will have to upgrade your ram and graphics card to run it optimally
also
some programs you use will also run slowly
so reccomend you
vista home basic
or
xp sp3
additionally you can insrtall various customization packs to enhance the xp gui

Jul 11, 2009 | IBM Netvista Intel Pentium 4 2.4GHz /...

2 Answers

I need upgrade my memory and need manural to learn how


Hi there.
Your computer will support 2x1GB (2GB max) DDR2 SDRAM.
Installing it is surprisingly easy!!!
Remove the power cord from the back of the tower and then take off the side panel so you can see the motherboard, then look for the ram (memory), it looks like this >>>>>>
e4d6c48.jpg

The slots the clip into look like this >>>>>
d3f3d3a.jpeg
You will will have only 2 of these slots and they may differ in colour, all you have to do is push on the cream tabs to release the memory modules and to put it back in just make sure it clips into place.
Please post back if you need anymore help or advice.

Good luck and thanks for using FixYa!!

May 24, 2009 | E-Machines eMachines T3830 PC Desktop

4 Answers

P4M800P7MB RS2H Foxconn motherboard and 2G memory upgrade


the 1gb memory modules need to be low-density ie chips on both sides. the motherboard can only recognise 512mb on each side of the memory module.

Jun 01, 2008 | PC Desktops

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