Replace ATI HD3200 AGP onboard?

[IBM1620]

I currently have an older ASUS motherboard (M3A78-EM) with an on-board AGP graphics card Radeon HD3200. The Windows Experience rating shows 3.9 for Windows Aero, although the Business Gaming figure is 5.3; all the other ratings are 5-6. Should I be trying to replace this GPU?

I do not do any high-demand gaming at the moment, but I do use Sibelius 6 which demands a fair bit from the GPU in detail.

This style of integrated AGP was only popular for a few years, so it seems to be hard to find a replacement. Wikipedia says a PCI replacement is dodgy, and besides I don't think I have the right slot: I have 2 white slots and a longer blue one, not a short red or green one.

Maybe I just need more RAM (currently 4GB).

Suggestions?

 

[cin19]

You can't replace the onboard iGPU( HD3200), but you can buy the new pcie type GPU+ new PSU, and disable the onboard HD 3200. Because your MB has the pcie2.0X16 ( blue), and the MB has legacy BIOS ( I think), so the new gen GPU like RX 460/470, or gtx1050,1060, etc. may not fit with your MB.

 

[IBM1620]

You can't replace the onboard iGPU( HD3200), but you can buy the new pcie type GPU+ new PSU, and disable the onboard HD 3200. Because your MB has the pcie2.0X16 ( blue), and the MB has legacy BIOS ( I think), so the new gen GPU like RX 460/470, or gtx1050,1060, etc. may not fit with your MB.

 

[IBM1620]

Thanks = I'll see if I can find a second-hand pci GPU that will fit. No point trying to upgrade much, pretty old MB and I don't do high-perf gaming. I don't understand the Windows Experience rating for the current GPU:
- Desktop performance for Windows Aero 3.9
- 3D business & Gaming 5.3
Other ratings are around 5.8-7. Does this mean if I stay away from Aero & heavy gaming my current GPU is adequate? My heaviest graphics user at present is Avid Sibelius 8, which is more like high detail desktop publishing.