NVIDIA Forceware v77.7x: New SLI AA Modes & Mainstream SLI

Name: NVIDIA Forceware v77.7x: New SLI AA Modes & Mainstream SLI - Page 3
Brand: NVIDIA

by Marco Chiappetta — Tuesday, July 19, 2005, 12:00 PM EDT

To judge the effectiveness of NVIDIA's new SLI Anti-Aliasing modes, we first fired up Half Life 2, and snapped off a few screenshots. To capture the images below, we set the game's resolution to 1280x1024, enabled the "Reflect World" option, and turned on 16X anisotropic filtering. The NVIDIA 7800 GTX "No AA" and "4X AA" shots, and both of the ATI X850 XT PE screenshots, were taken with the AA level set from within Half Life 2. But for the SLI 8X and SLI 16X shots, AA was enabled through NVIDIA's drivers. Unfortunately, we were unable to capture 8xS screen shots, and do not have them for comparison below...

Half Life 2 Image Quality Analysis: SLI Anti-Aliasing

NVIDIA vs. ATI

GeForce 7800 GTX 1280x1024 - No AA	GeForce 7800 GTX 1280x1024 - 4x AA	GeForce 7800 GTX 1280x1024 - SLI 8X AA	GeForce 7800 GTX 1280x1024 - SLI 16x AA
GeForce 7800 GTX 1280x1024 - No AA 200% Zoom	GeForce 7800 GTX 1280x1024 - 4x AA 200% Zoom	GeForce 7800 GTX 1280x1024 - SLI 8X AA 200% Zoom	GeForce 7800 GTX 1280x1024 - SLI 16x AA 200% Zoom
	Radeon X850XT PE 1280x1024 - No AA	Radeon X850XT PE 1280x1024 - 6x AA
	Radeon X850XT PE 1280x1024 - No AA 200% Zoom	Radeon X850XT PE 1280x1024 - 6x AA 200% Zoom

As is evident in the screenshots above, as the level of anti-aliasing is increased, the number of jaggies visible throughout the screen is significantly reduced. The "No AA" shots from both company's cards are comparable, as are NVIDIA's SLI 8X AA and ATI's 6X AA shots, with a slight edge going to NVIDIA in the latter comparison. NVIDIA's SLI 16X AA mode, however, currently has no equal. If you take a look at the zoomed portion of the image, focus on the supports under the water tower and on the crane's cables above the building. The SLI 16X AA shots are clearly the most defined. And if you take a look at the entire screenshot, concentrate on the tree at the upper-left portion of the image, and you'll see again see that NVIDIA's SLI 16X AA mode clearly does a better job at cleaning up the micro-detail in the tree's branches.

Tags: Nvidia, sli, Stream, mod, mainstream, Forceware, AA, force, EA, AI, id, AR, AM

Marco Chiappetta

Marco's interest in computing and technology dates all the way back to his early childhood. Even before being exposed to the Commodore P.E.T. and later the Commodore 64 in the early ‘80s, he was interested in electricity and electronics, and he still has the modded AFX cars and shop-worn soldering irons to prove it. Once he got his hands on his own Commodore 64, however, computing became Marco's passion. Throughout his academic and professional lives, Marco has worked with virtually every major platform from the TRS-80 and Amiga, to today's high end, multi-core servers. Over the years, he has worked in many fields related to technology and computing, including system design, assembly and sales, professional quality assurance testing, and technical writing. In addition to being the Managing Editor here at HotHardware for close to 15 years, Marco is also a freelance writer whose work has been published in a number of PC and technology related print publications and he is a regular fixture on HotHardware’s own Two and a Half Geeks webcast. - Contact: marco(at)hothardware(dot)com