Overclocking your X1800XT
Published: | Source: Overclock3D |Now your voltages are correct. It's time to OC, but first, some info about temperatures. If you havn't noticed already, there are a lot of readings that ATi Tool reads from the X1K series cards. There are five different readings, to be exact.
What do they mean? In order from the first reading to the last..
- Voltage Regulation. This temperature monitors the VREG area. This is near the rear of the card, around the long pink/red heatsink. Try to keep this under 75ºC. You can lower temps by placing a 120MM fan at the rear of the card.
- Core Draw (Amps). This tells you how much power your core is drawing. X1K's draw a crap load of power, so expect this to be quite high at times.
- Fan Speed. This tells you how fast (in percent) your fan is going.
- Core Temp. This is your X1K's core temperature. Make sure this does not exceed 80ºC at any time.
- Ambient Temp. This is the temperature of the air around the video card. The sensor is located towards the front of the card, by the DVI plugs.
Note: Do not adjust the sliders when the 3D View, or Artifact Scanner is open. It will most likely lock up your computer.
Simply adjust the bars to your liking. Drag them up 10-15MHz at a time, and open 3D View for about 2 minutes to test general stability. Fire up CS Source, or another game you like to play. If it doesn't freeze within 20-40 minutes, you're all set! These cards are very sensitive, and they WILL lock up if you OC too high.
If you're lucky enough to have a Tagan PSU with a switch on the back, to select either a single 12v rail or dual 12v rails, slide it over to a single 12v rail.
Here are my voltages (idle, 0.03v less compared to my DMM)..
(Click to view full image)
To have ATi Tool apply these settings at startup, please read the next page.