Thanks guys :)
Message Edited by monkey magic on 08-28-200606:29 PM
400 & 533 MHz DDR2 SDRAM
small form-factor computer: 2small desktop computer: 4desktop computer: 4small mini-tower computer: 4mini-tower computer: 4
128 MB, 256 MB, 512 MB, or 1 GB non-ECC
dual-channel: 256 MBsingle-channel: 128 MB
small form-factor computer: 2 GBsmall desktop computer: 4 GBdesktop computer: 4 GBsmall mini-tower computer: 4 GBmini-tower computer: 4 GB
Well I disagree with that. 1 Gig is good for many games 2 gig is great. 3 gig is not worth while and trying to get to 4 gig without emt64 now thats a waste.
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but he said it was not for games
if he gamed then i'd have no problems recommending 1gb or 2gb.
i still think 3gb+ is a waste...
Message Edited by monkey magic on 08-29-200602:07 AM
corsair is a good brand
when i upgraded by gx280 i just bought some cheap Gateway/Micron RAM and it worked for me
i upgraded to 1gb (2x512mb) pc2-3200 400MHz ddr2
i donno about the money because I am in the US :P ... I paid $50 for that
and yes i have that same model
yes it is true, i still use my original dell optiplex gx280, 10+ years old
just replaced 2x512mb memory and purchased 4x1gb (max for four slots) ddr2, PC2-
6300, 667MHz made by pacific sun at frys electronics in downers grove, il, total cost,
$34, much faster on single/multiple window apps and web searching
if you still have this model, consider spending the $34 b4 you buy new machine
frys return policy is 30 days, good luck!
I am also using a Dell Optiplex GX280 mini-tower, which accepts up to 4GB RAM memory. I am running Windows 7 Pro. The motherboard has 4 memory stick slots. Previously I had two each 1GB sticks and 512MB sticks , total of 3GB. It worked fine, but I decided to boost the RAM to the maximum 4GB by replacing the two 512MB sticks with two 1GB sticks. Now I have four 1GB sticks installed. All still works fine, but the System screen displays, "Installed memory (RAM): 4.00GB (2.99 usable)". The Performance tab in Task Manager confirms there is 3,060MB of Physical Memory, not the 4,000MB+ that I expected to see. Why are only 2.99GB of RAM usable, and how do I fix, so all (or almost all) of the installed 4GB are in use? Thanks.
This cant be fixed because the system uses part of the ram in the bios shadow and integrated video. You do not get this ram back even if you install a video card.
Thanks for the response. However, your answer raises another question in my mind. Previously, when I had 3GB of RAM physically installed, the system showed all 3GB as being used in the Task Manager Performance tab, and appeared on the System information screen. Why wasn't part of this RAM being used in the BIOS shadow and integrated video? Thanks.
When you have integrated video for older systems 4 gigs was maximum ram. The bios and video etc are mapped to 32 bit address space. Showing ram is not the same as being able to use it. The GX620 which is the transition from GX280 also has this limitation. Where 3.50 gigs is max ram regardless of 64 bit os or not. You cannot wish features into 10 year old chipsets.
The other reason to have this limitation is due to compatibility with 35 year old 16 bit MSDOS.
Newer core I3 I5 I7 systems were limited to 8 gigs max ram due to the integrated INTEL HD graphics for the same reasons.
There are other models that support 8 gigs of ram but they too never get back the integrated ram and bios shadow ram.
3.25 Gigs is memory map limit with 32 bit addressing in BIOS.
This means regardless of the OS you NEVER get more than 3.25 gigs. AKA E510 DIMENSION 5150
So these limits are based on the mapping of the BIOS and Video and chipset.