I have a PCIe 256Mb 7600GS and its very good indeed.
I bought one of the versions that was fanless in an attempt to make a quiet PC but I found that it did get really hot. If you do go for one like this and it goes where there is little airflow then you should also budget for an extra fan. I got one of those ultra low noise Akasa types (which really are low noise by the way) and directed it over the heatsink. Its now really cool, quiet and a good solid performer.
I bought one of the versions that was fanless in an attempt to make a quiet PC but I found that it did get really hot. If you do go for one like this and it goes where there is little airflow then you should also budget for an extra fan. I got one of those ultra low noise Akasa types (which really are low noise by the way) and directed it over the heatsink. Its now really cool, quiet and a good solid performer.