GPU-Z 0.4.8

* Added support for NVIDIA GeForce GTX 580 and future GF104 variants
* Updated TMU/Texture rate calculation method. Please report any errors in the forums
* Fixed memory clock monitoring on HD 6850, HD 6870
* Fixed label corruption on cards without any shaders
* Fixed rare CrossFire detection bug on ancient ATI drivers
* Added voltage monitoring fallback for ATI cards with unsupported voltage controller
* Updated PCI vendor ID for PowerColor
* Removed MSI giveaway