The two Radeon X1800 series models and the GeForce 7600 GT are capable of running Half-Life 2: Episode One at a high enough speed. The resolution of 1280x1024 pixels is available for play on all these cards with or without full-screen antialiasing. The Radeon X1800 XL even makes the resolution of 1600x1200 playable when FSAA is not enabled.
In all those cases when the speed of the mentioned solutions is high enough for comfortable play, the Radeon X1800 GTO is less than 10% behind the GeForce 7600 GT. This card should probably have got better results if its GPU were clocked at a frequency of 550MHz at least. As far as we’ve learned in our tests, it’s from this point that ATI’s R520 and R580 chips begin to show their full potential.
The best choice in this category is beyond any doubt the Radeon X1800 XL which is designed by the 16-16-16 formula (Pixel shader processors – TMUs – ROPs). The Radeon X1800 GTO is similar to the GeForce 7600 GT in terms of performance, but the Nvidia product consumes less power and is smaller in size.
The higher-category products that are included for the comparison’s sake – the Radeon X1900 GT and the GeForce 7900 GT – offer more speed, of course, but at a higher cost.