Nvidia takes on stereo 3D with GeForce 3D Vision
We mentioned AMD and iZ3D's stereoscopic 3D approach earlier, and now we get to take a look at Nvidia's solution with the announcement of its GeForce 3D Vision. Unlike AMD, which is merely a beneficiary of iZ3D offering ATI Radeon customers a deal on drivers for its specialized 3D LCDs, Nvidia's stereo 3D hardware is homegrown, and it's also one of the few products that Nvidia itself is distributing to retail.
For $199, GeForce 3D Vision gets you a set of battery-powered, wireless glasses, as well as an infrared emitter that acts as a go-between for your computer and either a 120Hz PC LCD or a DLP HD television. Where iZ3D's glasses are passive, Nvidia's are active, which is to say they require power to perform the appropriate image processing.
The results of Nvidia's GeForce 3D Vision are impressive. We've sat through press demos with both Nvidia and iZ3D. iZ3D's were fine, but we got to see more games during Nvidia's demo, so we have a bit more experience with GeForce 3D Vision. The visual effect is more than simply cheap Hollywood-style 3D flash. In Left 4 Dead, we had the sense of a much more immersive depth of field than you get from standard 3D games on a 2D display. Nvidia also gives you a dial on the emitter to increase the perception of depth. Adjusting it can be jarring, especially at very high settings, but we liked having the option, and we're not aware of a similar feature on the iZ3D displays.
Nvidia's GeForce 3D Vision glasses and IR emitter.
(Credit: Nvidia)Despite its active glasses, Nvidia's take on stereoscopic 3D also relies on specialized LCDs, in this case those with a 120Hz refresh rate over dual-link DVI. Samsung and Viewsonic will be offering such displays soon, although initial reports have listed prices at $479 for the 22-inch model. Prices will drop as 120Hz LCDs become less exotic, but that's still about $679 worth of hardware to enjoy Nvidia's 3D tech, compared with only $399 for the display and glasses from iZ3D.
Traditionally, stereoscopic 3D has been scoffed at due to clunky hardware, lackluster game support, and a headache-inducing flicker effect. We haven't sat down for a good gaming all-nighter to see if either vendor has eliminated the headaches, but the vastly enhanced visual effects of the games and movies we've seen over the last month with stereo 3D make us think that the technology might finally be ready for consumer success. And you can scoff at the glasses all you like, but, as Nvidia suggested to us when we scoffed ourselves, if you're willing to jump around your living room with a plastic guitar in your hands, are 3D gaming glasses really all that bad?
Rich Brown reviews desktops and various other components and peripherals for CNET. E-mail Rich.

I thought the 3D monitor and cheap-o glasses did everything you need. Is the only difference that you don't need red and blue tinting?
Does the monitor need to be a lcd though cos most crt monitor's are 185hz, and if it doesn't support crt's then you might as well wait it out for the IZ3d 26" monitor for the higher res, size and it'll probably be cheaper, maybe $599 range. or if you can't wait and will go with the 22" you can get a ATI 4870 for less or a 4850x2 for $20 more.
The iZ3d also has different glasses to chose from, so what would you say nvidia,s vision has better over the iZ3d that makes it so expensive. Which one looks better (more 3Der) and is it worth investing in this.
The nVidia glasses are shutter glasses. There's a lot more to them. They work with essentially normal TV's/monitors (that can do 120+ Hz, so not common.) The iZ3d glasses only work with their special type of monitor (wich isn't great for 2d.)
I have shutter glasses that work with a plain old CRT monitor and they work great. Some DLP sets offer this type of setup as well.
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by tur4k
January 14, 2009 1:04 PM PST
- The reason the nVidia glasses are more expensive is because they are LCD shutter glasses. The glasses basicly sync to the refresh rate of the monitor. The glasses will block the view of one of your eyes for the first frame. Then it switches eyes for the second frame. It's alternating back and forth blocking the vision from one of your eyes. You can't tell though because it's switching 120 times per second. Mean while the monitor is changing the perspective of the image for every other frame. This way each eye see's a different image. This is also why you need a monitor that supports 120Mhz refresh rates. This allows it to render 60 Frames Per Second to each eye.
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by tur4k
January 14, 2009 1:10 PM PST
- I meant to say 120hz...
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