In my case, a 6800 with 128MB was replaced. It was worth it.
Because of the moderate power consumption of the card it runs stable even with my elderly 300W-Pention-4-ready power supply together with an Athlon 64 3200+ and two hard drives and an optical drive.
The overclocking capability of the card are extensive.
The design with two slot brackets is more honest than many other cards that come along with a rear bracket and still make it through the fan level the underlying PCI slot unusable. Whether the Lüftunsöffnungen must really the (probably non-directional) transmit in the second slot bracket airflow of the Card Fan greatly to be doubted. But the air is pleasantly quiet in fact. Hot is the card also not, at least not in normal clock.
Buy recommendation for owners of AGP-based systems.