Hi ex-railwayman,
if your graphics card is built into your motherboard, if I wanted to upgrade, is it easy to exchange ??
The answer is "it depends" - the critical factor is which motherboard your computer uses.
(Note laptops are usually "fixed" for add-ins - there usually isn't space to add very much more)
Most computers have one of two "plugs" for graphics cards.
The old one is "AGP", the newer is "PCIexpress"
When you add a graphic card, some come with memory on the graphics card, some are designed to share the memory on the PC motherboard.
The shared ones are usually cheaper....
The good news is that upgrading from the PC "as supplied" is usually as easy as unplugging the old & inserting the new (plus a couple of power connectors!).
It's usually possible to add a graphics card to PC (if the graphics is fixed on the motherboard it may be possible to disable it - that's the BIOS options settings).
Your processor will surely eat into whatever size graphics card you have installed, I would have though that logically speaking the bigger the card, the more power the processor will use, or does it not work like that????
A graphics card will have its own processor (GPU = graphics processing unit) to interpret the codes sent to it by the main processor. However, if the graphics card shares memory with the motherboard, there's a lot of data moving between the CPU => GPU => RAM=> GPU output (screen).
The CPU manages data transfers - so it must manage the graphics data to and from the motherboard RAM. This is usually just when you want maximum performance...
It the graphics memory is on the graphics card, the main CPU dosen't get involved at all.
Johnk was referring to processor power - not electrical watts.
One problem with updating the motherboard is that it's not always easy finding one that matches your old components - like CPU/memory chips. You may have to think of new CPU, new memory to match the motherboard, then the new graphics cards use more electical power (new PSU)...
Can you post your motherboard details here?
HTH,
Colin