OK. I have an older 4870 which is by Gigabyte and it runs stock at 750 Core 900 mem. Now, I keep reading about people BIOS flashing their cards so that there's no need to do the overclocking it just stays at flashed speeds. This interests me alot because I want to flash it to a 4890! Now what I need to know is what software is there available and what are core 4890 speeds compared to 4870's. Also for a 4870 is it even possible. The stories I have read only involved the newer 58XX cards.