8800GT bios for better overclocking! *test*

[dinos22]

can you undervolt the GFX card

NOW that would also be worth flashing for for many

[winbond]

i haven't tried your bios but i made a custom one and tried it out,

voltage 1 and 2 set to 1.1v
voltage 3 and 4 set to 1v

this didn't help , my overclock on the core got worse, i haven't tried shaders

custom ram timings with default voltage: top-down, left-right,
40,52,30,16,16,12,12

it didn't help at all for the ram oc, looks like really crappy ram

[JKDC]

Edit through NBitor and give it 1.2 volts. 1.15 should work too but I haven't tried it. This DOES work. I left specifics in the 8800GT volt mod thread. It looks like you raised idle and dropped 3D voltage. Edit the voltage table to give 1.2 volts and put 1.2 in extra and edit the VID for 1.2 for Extra and 3D.

[F@32]

Anyone tried setting 2D clocks/voltages and 3D clocks/voltages in BIOS?

I currently have 1.1V in Extra and 750core/1825shader/1000mem 15min AtiTool stable... Will try 1.2 next and see where she goes from here. 50C under water.

Found a thread where 2D/3D voltages were set separately. Wonder if anyone can confirm BIOS mod with DMM?

[Hazaro]

Edit through NBitor and give it 1.2 volts. 1.15 should work too but I haven't tried it. This DOES work. I left specifics in the 8800GT volt mod thread. It looks like you raised idle and dropped 3D voltage. Edit the voltage table to give 1.2 volts and put 1.2 in extra and edit the VID for 1.2 for Extra and 3D.

What is stopping you from putting 1.4V in the BIOS? The chip?

[metro.cl]

Edit through NBitor and give it 1.2 volts. 1.15 should work too but I haven't tried it. This DOES work. I left specifics in the 8800GT volt mod thread. It looks like you raised idle and dropped 3D voltage. Edit the voltage table to give 1.2 volts and put 1.2 in extra and edit the VID for 1.2 for Extra and 3D.

can you explain more how exactly you set over 1.1v with nibitor? i only see 1.1v as max available.

[F@32]

can you explain more how exactly you set over 1.1v with nibitor? i only see 1.1v as max available.

I don't think that soft mod will feed more than 1.1v. We need someone to verify it with DMM.

First you need to edit voltage table: Tools -> Voltage table editor (change entry 4 "VID 03" to 1.2v)


Next, update Voltages, VID mode first: Set 1.2v for "Voltage 4".


And lastly update Voltages, Exact mode "Extra":


I have set it to 1.2 and there is no difference in my OC from 1.1. I'm afraid volt mod is needed to get above that.

Next I will try to set 2D and 3D clocks. EDIT: I guess 8800GT has only Extra and no 3D, Throttle, 2D clocks in BIOS

MKVTECH.NET
Well it is not possible, in fact since we had only some GeForce 8800 GT BIOS's we just introduced the Extra setting as the GeForce 8800 GT doesn't have 2D, Thrtl and 3D at all. It uses a new structure with a 4th performance level which is new and only that one is active. So in the next version we might just hide the 2D, Thrtl and 3D in NIBiTor for the GeForce 8800 GT as those are no longer used nor valid and will never work. And no don't blaim us... This is NVIDIA that made this change on the BIOS structure and logic.