for you Intel desktop board d101ggc the best graphic card will be from ATI becauseas you board already have ATI* Radeon* Xpress 200 Chip set so for best configuration buy ATI graphic card best combination. OR you can go for Nvidia.
The specs say it has one PCI-E x16 port (I assume it works at full x16 bandwidth), it means that you should be able to use the latest video cards with your system. Most likely the problem you are going to run in is that your computer case cannot accommodate newer video cards due to internal space limitation.
that board will support any single graphics card available. however, high end cards such as the gtx 280 from nvidia and the hd4870x2 from ati will not run to their full potential due to the lack of CPU power and RAM capabilities. Also, you will need a hefty PSU to run the more powerful cards
The Compaq SR1940IL supports a maximum of 2 GB of RAM, using two 1 GB modules of DDR2-533 RAM.
The Dell Optiplex supports a maximum of 512 MB of RAM using two 256 MB PC100/PC133 SDR SDRAM modules.
http://www.intel.com/support/motherboards/desktop/d945gcpe/sb/CS-027116.htm2 GB maximum total system memory
800 by 600
5000
2gb.
192 Gigabytes is the maximum.
The maximum amount of RAM supported by a computer depends on the processor and the motherboard.
4GB
As of August 2009, 2 TB is the maximum the average consumer can purchase for a desktop drive.
The manufacturer rates the maximum user weight supported as being 400 pounds.