Originally Posted by Roliath
I just bought a 5900 off this board, (fast shipping ftw!) for a backup rig I have.
3200XP, 1GB Corsair XMS, crappy mobo, onboard sound, etc etc..
Well, I remember that some people were successfully flashing 5900s to bonafide 5950's.
I probably won't do it, but I would like to know that I can.. the card's stock clocks were I believe 400/800 and coolbits autodetected 475/950 (artifact free).
Now, is this pretty good?
So has anyone here actually done this flash? Sorry for the not soo organized post, but I am writing my Mid-Term Paper right now aswell.
You will have NO problems flashing your 5900nu with a 5950u bios. The 5900nu was the most versatile and upgradable version made. And its easy ability to be turned into a 5950u is why it was discontinued and replaced with the less good 5900xt type.
So, apart from your card only having 128Mb of memory, the flashed 5900nu will become a 5950u card. And very good 5950u bioses to flash with are those from MSI or BFG.
The extra core volts from using a 5950u bios, and because a 5900nu is fitted with 2.2ns memory chips, should easily allow overclocks to 500+/1000+ levels. But if intending to go that high, I suggest you first fit better than stock heatsinking.
The 5900nu is in fact an excellent, very overclockable and tweakable, card which for its time could be made to perform extremely well. For example, my highly overclocked and tweaked Aopen 5900nu, flashed with a bfg5950u bios, achieved the following.
Driver, 75.90 :-
3Dmark05 v120, 1482
3Dmark03 v360, 8077
3Dmark2001se v330, 20709
And for comparison, apart from the DX9 scores of 3Dmark05, these scores are better than those from my newer 6800le out of the box.
3Dmark05 v120, 2521
3Dmark03 v360, 7345
3Dmark2001se v330, 18858
So if wanting to look more into what is possible with a 5900, I suggest you check out the linked thread below,