A Question About Video Card Upgrade

I was given a 6-year old Gateway 500S desktop about a year ago that has an Intel 82845G integrated graphics controller with 64 MB of video memory.

It has an Intel Pentium 4 2.0 GHz processor and 2,048 MB of PC-2700 SDRAM and Windows XP SP3 and Roadrunner 20 Mbps cable.

It runs fine for what I use it for, but I've been considering upgrading its graphics with an ATI Radeon 7500 AGP video card with 128 MB of video memory. It's sitting in my computer parts box and was used briefly in an old HP Pavilion desktop.

Would the upgrade be worthwhile, as far as increasing graphic performance and overall performance in general?

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