Language Selection

English French German Italian Portuguese Spanish

Driver glitch limits overclocking of Nvidia's GeForce 7800 GTX chip

Filed under
Software

Modern hardware such as Nvidia's latest graphic chip generation support temperature monitoring features that automatically can decrease clock speed and even disable graphic cards when the chip gets too hot. This "software protection mode" however works in two directions.

The card is not only shut down when temperatures get too high, but also when they fall below a certain level. This is especially the case when GeForce 7800 GTX cards are prepared for overclocking with water or liquid nitrogen cooling systems.

Nvidia confirmed in an email to Tom's Hardware Guide that the graphic chip will switch into software protection mode when die temperatures reach a range of 30 to 35 degrees Celsius. "There is an issue with our thermal detection software that doesn't let you supercool the chip to run overclocking tests," Nvidia's Nick Stam said.

Nvidia did not provide more details on the glitch. Card manufacturers told us that effects of the activation of software protection mode can range from a decrease in clock speed or even a shutdown of the card. Usually, the card only slows down when temperatures climb above 115 degress Celsius. Typical operation temperatures are between 55 and 75 degrees, Stam said.

According to Nvidia, the issue is based solely on software and will be corrected with a new driver version that is scheduled to be available by mid-July. Until then, there is a "quick/dirty fix" available from XFX for users who need to solve the problem right away. "But the driver fix will be best route" to enable overclocking through extreme cooling devices, Nvidia said.

By D. Polkowski & W. Gruener
Tom's Hardware Guide

More in Tux Machines

Tails 1.1.1 is out

The next Tails release is scheduled for October 14. Have a look to our roadmap to see where we are heading to. Read more

Healthdirect Australia sees value in open source for security solution

Commonwealth and state/territory government funded public company, Healthdirect Australia, has used open source software to build an identity and access management (IAM) solution. The IAM solution allows users to have one identity across all of its websites and applications. For example, users can sign in using their Facebook, LinkedIn or Gmail account. Read more

Ubuntu Installer Bug Can Delete Your Hard Drive and All Other OSes

The Ubuntu installation procedure is governed by a piece of software called Ubiquity and it's one of the most intuitive and easy-to-use installers on the Linux platform. Unfortunately, users have been confronting with a bug that could wipe their entire hard-driver without any kind of announcement. Read more

You have your Windows in my Linux

Although there are those who think the systemd debate has been decided in favor of systemd, the exceedingly loud protests on message boards, forums, and the posts I wrote over the past two weeks would indicate otherwise. I've seen many declarations of victory for systemd, now that Red Hat has forced it into the enterprise with the release of RHEL 7. I don't think it's that easy. Read more