Graphics cards do not typically function in this manner. While cards can, in some instances (using SLI or CrossFire), share resources, the memory address spaces are kept separate, and the GPU workload is simply divided. This is also dependent on the game software itself. Also, neither of the two methods for connecting cards in the aforementioned scenario work on AGP or PCI buses, but only on PCI-E buses.
As the motherboard has only two expansion slots, both PCI, your options are rather limited. You would need to purchase a PCI graphics card, which probably isn't worth the money.
Yes. Any computer manufactured since 2002, including the Intel D945GCPE, can support a theoretical maximum of 144 petabytes (144 million gigabytes) per drive.
It has a motherboard-integrated graphics chipset by Intel: Intel Graphics Media Accelerator 4500MHD
igfxtray is the Intel Graphics Accelerator Helper tray application, which allows you to change settings on your Intel graphics system on your motherboard. It it a normal application, and not spyware or a virus.
I am assuming that you are referring to The Intel® Desktop Board D845GVSR. This Motherboard has onboard intergrated graphics, but does not have an AGP slot available, However there are 3 PCI slots available. So the answer to your question is that without an AGP slot you are restricted to PCI or ONBoard Graphics with this motherboard.
Potato Peels
Yes, that is determined by the ports on your motherboard. Once you have a card that will work then you will go into the BIOS and disable the on-board graphics
yes
http://www.intel.com/support/motherboards/desktop/d945gcpe/sb/CS-027116.htm2 GB maximum total system memory
You can choose motherboards based on following chipsets: Intel
An Integrated graphics card that is usually soldered onto the motherboard. Word of advice: if you want any decent performance in more graphics intensive tasks, use a dedicated graphics card (eg: GTX 1080) if possible.
Yes. Some relatively recent PCI graphics cards are available, which will fit into any of the three PCI slots on the motherboard.