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Overclocking Riva 128 cards with
PowerStrip
PowerStrip is an affective way
to gain performance on Riva 128 cards. It is especially
useful in higher resolutions.
I take NO RESPONSIBILITY for any
damage you may do to your card!
Warning:
Here are some of the precautions you should take to make
sure you don't damage anything:
- Don't attempt to overclock without cooling! Make your
own if you have to (See Planet
Riva's 486 heatsink/fan cooling idea), but for best
results I recommend buying something like the Lasagna
X Cooler.
- Check your card's ram. Look at the video card and
on the memory chips you will see a number. If it says
-12 don't even bother trying to overclock, you will
probably fry your card. If it says -10 you should not
go over 125 MHz. If it says -8 or -7 you can go as fast
as 133 MHz or faster, but I still recommend cooling.
- Don't go overboard! If you plan to overclock, don't
try doing something like going over 133 MHz or you may
ruin your card.
What you'll need:
Now,
assuming you have checked the ram on your card and you
have good cooling, get PowerStrip. The link below with
download PowerStrip for Win95.
Download
PowerStrip
Download and install PowerStrip. Take note that you WILL
NOT be able to save changes with the shareware version.
You will have to reset your clock speed everytime your
computer restarts unless you register.
How to overclock
your card:
Although Entech-Taiwan did a great
job on PowerStrip, one of the coolest features, the memory
clock feature, is well hidden.
When
you are ready to overclock, start PowerStrip. It will
be in your system tray at the bottom right hand of the
screen. Click on this icon:
It will bring up a menu, like this:
Go to to "Advanced options", near the top.
Click on "About the PowerStrip...", then click
on the "Performance" tab.
Click the Performance tab, and you can just slide the
"Memory clock" as far as you want. Enabling Fast Memory
timing does almost nothing. Since this feature appears
to be undocumented in the readme.txt, I suggest leaving
it alone.
You can edit your pstrip.cfg file in the Windows directory
on older versions (and possibly newer versions) to make
it go even higher, but I strongly suggest you do not
go over 125 MHz. My card has literally NEVER frozen
at 125 MHz so I can see how faster speeds are possible.
I imagine if you set it too high you will have problems
and possibly ruin your video card. If you REALLY want
to do this, here's how:
Start Notepad. At
the top, choose FILE, OPEN, and type C:\windows\pstrip.cfg.
You should now see
a huge database of video cards.
Hit F3 and type Riva,
hit enter. It will now say [Riva128] or something similar.
Find the line:
MClk=90,125,100
You can change the
middle value (the maximum MHz) to your desired #. Don't
go overboard! Now when you enter PowerStrip this will
be the maximum value for your Riva 128. The first #
is the lowest value you can set, and the last value
is the default value for the chipset. I think
if you change the default value to your desired overclocking
speed it will be using it at all times if PowerStrip
is running (without having to register!). So, you might
want to change this to:
MClk=90,133,125
Giving you a default
speed of 125 MHz, and an option to use UP TO 133 MHz.
Also, make sure that
under [Riva128+] you have set the same values.
Performance
I'm sure after reading
all that most people want to see what exactly overclocking
this chispset can do for them. Well, here's some Quake
results on my P2 266 running at 336 MHz (112 x 3)
Quake II OpenGL
640x480
| Test |
100
MHz |
110
MHz |
125
MHz |
%
increase FPS |
| Demo1 |
45.8 |
47.0 |
49.1 |
7.2 |
| Crusher |
27.0 |
27.1 |
27.1 |
.3 |
800x600
| Test |
100
MHz |
110
MHz |
125
MHz |
%
increase FPS |
| Demo1 |
34.2 |
37.5 |
40.9 |
19.6 |
| Crusher |
24.4 |
25.0 |
25.6 |
4.9 |
960x720
| Test |
100
MHz |
110
MHz |
125
MHz |
%
increase FPS |
| Demo1 |
24.4 |
26.1 |
30.1 |
23.3 |
| Crusher |
18.7 |
19.8 |
21.5 |
14.9 |
GLQuake
640x480
| Test |
100
MHz |
110
MHz |
125
MHz |
%
increase FPS |
| Demo2 |
60.0 |
64.2 |
72.7 |
21.1 |
| Bigass1 |
38.3 |
40.5 |
43.1 |
12.5 |
800x600
| Test |
100
MHz |
110
MHz |
125
MHz |
%
increase FPS |
| Demo2 |
39.3 |
43.5 |
48.9 |
24.4 |
| Bigass1 |
31.7 |
32.8 |
35.4 |
11.7 |
If you have a concern, question, or if you have some
more information that you would like to provide in this
section head over to the discussion
board and let me know.
Return
to Tweak3D
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