I,m running AMD athlon 64x2 daul core processor 4000+ by 2-11 GHZ with
2 GB ram [ 1GBX2 ]. Can i upgrade [ 1GBx2 ]sticks matching my existing setup, will
my computer recognize the upgrade and adjust or do i have to change something.

Yes you should be able to match the speed, and preferably the brand of memory currently installed.(including cas) Some boards are more picky than others.
Best would be to buy all new,to prevent possible conflicts, and sell your current RAM.

Also depending on your Operating System and motherboard, you may not be able to acess 4GB of RAM. You can install 4GB but your system will not be able to access it unless you are using a 64 bit OS and the motherboard supports that amount.

Here's a good explanation if you need.
4GB RAM in 32-bit Windows XP and Vista

The newer computers should allow the upgrade to more memory but it is all ways best to check the manufacturer's web site and see what they have to say. You didn't mention that this was a desktop or laptop and that also makes a big difference as to whether or not an upgrade can be performed.

The computer is a desktop with Windows Home XP s'pack 3 with Alive NF6G-VSTA motherboard. I ran a scan from CRUICAL .COM re the upgrade and it came back that this ram upgrade was compatible with my present sent UP and recommended the 1GB.DDR2-667[PC2-5300] for my computer.

Motherboard Specs

ALiveNF6G-VSTA
Support for Socket AM2+ / AM2 processors: AMD Phenom™ FX / Phenom / Athlon 64 FX / Athlon 64 X2 Dual-Core / Athlon X2 Dual-Core / Athlon 64 / Sempron processor
NVIDIA® GeForce 6100 / nForce 430 or GeForce 6150SE / nForce 430 Chipsets
AMD LIVE!™ Ready
Supports Dual Channel DDR2 1066 with AM2+ CPU, and DDR2 800/667/533 with AM2 CPU, with 4 DIMM slots, maximum capacity up to 16GB
ASRock AM2 Boost: ASRock Patented Technology to boost memory performance up to 12.5%
Integrated NVIDIA® GeForce6-class graphics DX9.0 VGA, Pixel Shader 3.0, Max. shared memory 256MB
1 x PCI Express x16 slot
Untied Overclocking : During Overclocking, FSB enjoys better margin due to fixed PCIE/ PCI Buses
Hybrid Booster - ASRock Safe Overclocking Technology
4 x SATAII 3.0 Gb/s, support RAID (RAID 0, RAID 1, RAID 0+1, RAID 5, JBOD), NCQ, and "Hot Plug" functions
HDMI_SPDIF header, providing SPDIF audio output to HDMI VGA card, allows the system to connect HDMI Digital TV/projector/LCD devices.
7.1 CH Windows® Vista™ Premium Level HD Audio (ALC888 Audio Codec), 10/100 Ethernet LAN
Windows® Vista™ Premium Logo Ready
HD 8CH I/O: 4 ready-to-use USB Ports, HD 7.1 channel audio jacks


This says that you can have up to 16 gigs of installed memory. but again with what squirrelnmoose told you....that you maybe able to install the upgrade but the operating system might not allow you to use it....


What you have is the 32 bit version of Windows XP home (home does not have a 64 bit version)
32bit Windows XP will only allow 3 gigs (some says 4) but I have never been able to get it to use more than 3 gigs.

Thanks fellows for all your helpfull advice, it was much appreciated. I've received my order from CRUICAL .co, only 5 days from USA to AUST thats terrific service. I've installed the 2 sticks with no problems but like you said it won't go pass 3 GBs so until i go up to 64 , but i've notice a slight increase in moving from file to file. Once again thanks fellows.

lurkswithin - thanks for the print out of my comp's workings , can or will i be able to install windows pro x64 over my existing xp home and would my system be able to run it

It should be able to handle it just great! But you must understand that if you install the 64 bit windows then all hardware and software must be designed for the 64 bit system or it will not run right!

There are many fine older programs that people love to hang on to for various reasons....they more than likely will not work.