[Cooling] [Overclocking]

The Thriller 3D and Stealth II V2x00 cards are very simple to overclock.  Be warned, however, that overclocking is dangerous and would almost definitely void your warranty (if it could be proven).  This little tweek may work for the upcoming V2200 cards also (such as the Jazz Outlaw 3D), but I'm not sure.  It probably will because it works on the V2200 Rendition Reference boards. If you want to overclock your V1000 board, check out Bjorn's 3D World for more info.

Note: this process is inherently dangerous.  I am not advising you to do it.  I am just providing information on how it can be done.  If you should elect to overclock your chip, you are solely responsible for the results.

Cooling

[Overclocking]

1) Add extra case intake and exhaust fans.
2) Reduce cable clutter to help air flow.
3) Buy a well-designed, roomy case (an often neglected component).
4) Do not place your computer in direct sunlight or near any heat source.
5) Mount a heatsink onto the graphics RISC processor. You can cut a 486 heatsink down and attach it with thermal glue, thermal tape, or even a tiny amount of superglue along with some thermal paste. Ensure a good fit with no air-gaps which could act as insulators. Say "bye-bye" to your warranty.
6) Flatten one of the screw-in backplates to your computer. Mount a fan to the modified backplate. Screw the backplate in and orient the fan to blow air across the surface of your graphics card. Make sure the backplate and screws do not come into contact with any metal surfaces other than the case or you may short-circuit something.

I'm sure there are other options, but you get the idea.

Overclocking

[Cooling]

1) Using Notepad or any text editor, create a verite.ini file (or modify the existing one) in your \Windows directory.
2) Place the following lines in verite.ini (these are just possible values - see the chart below):
[display]
m=33 (this value is already set to 35 in the Thriller 3D verite.ini)
n=2
SClkP=4
MClkP=2
3) Save the file and re-boot to effect the changes.

In order to reduce the risk of typos, I have included the above file here.

These settings will overclock your RISC processor to 59MHz and your SGRAM to 118MHz. The Stealth II is officially rated for 40MHz with 100MHz SGRAM, the Thriller 3D is rated for 60MHz with 125MHz SGRAM, and the Jazz Outlaw 3D is rated for 50MHz with 100MHz SGRAM.

The memory and RISC speed are calculated from the above variables as follows:

SGRAM MHz = 14.318 * m / (n * MClkP)
V2x00 RISC MHz = 14.318 * m / (n * SClkP)

Here are some sample calculations:

RISC Speed	SGRAM Speed	m	n	SClkP	MClkP	Comments
40.1 MHz	100.2 MHz	14	1	5	2	Stealth II Default
44.7 MHz	89.5 MHz	25	2	4	2
46.5 MHz	93.1 MHz	26	2	4	2
48.3 MHz	96.6 MHz	27	2	4	2
50.1 MHz	100.2 MHz	28	2	4	2	Outlaw 3D Default?
51.9 MHz	103.8 MHz	29	2	4	2
53.7 MHz	107.4 MHz	30	2	4	2
55.5 MHz	111.0 MHz	31	2	4	2
57.3 MHz	114.5 MHz	32	2	4	2
59.1 MHz	118.1 MHz	33	2	4	2	Highest reliable setting for my S2
60.9 MHz	121.7 MHz	34	2	4	2
62.6 MHz	125.3 MHz	35	2	4	2	Thriller 3D Default
66.2 MHz	132.4 MHz	37	2	4	2	Highest working settings for my T3D
69.8 MHz	139.6 MHz	39	2	4	2	T3D settings used at Tom's Hardware
71.6 MHz	143.2 MHz	40	2	4	2	Good luck!
78.7 MHz	131.2 MHz	55	2	5	3	Yeah, right...

I have created an Excel spreadsheet that you can use to automatically calculate your own settings.

Here's a overclocking calculator from EnTech that can actually apply the changes directly for you.

Note: the RISC processor seems to be more tolerant of overclocking (with cooling) than the memory.