"Roger" wrote in message
...
What speed increase could I expect by switching from a GF1 with 32MB DDR
RAM to a "plain" FX5700 with 128?

That depends on whether you have a CPU of the same era as your GF1, if that
is the case then don't expect much better performance at all. The only
difference is you'll be able to run at higher res with FSAA and things like
that on, but your CPU will be a fat bottleneck.