3D Vision Blog

A normal user's look into the world of 3D Stereo Technologies

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Entries Tagged as 'GeForce 3D Vision'

The Nvidia GeForce GTX 650 Ti GPU is Out Now, Great for 720p S3D

October 9th, 2012 · 5 Comments · GeForce 3D Vision

Nvidia continues to introduce new graphics chips from its Kepler lineup and after the top models are all already on the market it is time to also fill up the middle and lower range of products, and here comes the GeForce GTX 650 Ti. Not too long ago the company has introduced the 660 Ti and it instantly became my minimum must have GPU for gaming in stereo 3D mode at Full HD resolution, so the big question now is where the 650 Ti should be situated. Nvidia positions the GTX 650 Ti as a card for gamers with more limited budget that want to be able to play at 1920×1080 or 1920×1200 resolution with medium to high graphics details, but without pushing for the maximum ultra details and going for high AA settings. And if that is true for 2D gaming, then you should not expect the card to be able to perform great at Full HD resolution in stereoscopic 3D mode, sure you should still be able to play in that resolution, but you’ll have to go for lower detail levels. So instead of trying to push the GTX 650 Ti to the limits at 1080p resolution in stereo 3D mode I’ve decided to test how good the card will perform in 720p resolution in stereo 3D mode. I have the feeling this graphic processor would be a great choice for stereoscopic 3D gamers that are using 3D projectors or 3D HDTVs to play games in 3D mode and there 720p is the typical resolution. Of course the goal would be 720p resolution with some AA and the maximum detail levels, so that the player would not be bothered by the lower resolution being used. But before doing some tests let us see what are the specifications of the GeForce GTX 650 Ti…

Specifications of GeForce GTX 650 Ti:

CUDA Cores – 768 +576
Graphics Clock – 925 MHz +25
Texture Fill Rate – 59.2 GigaTexels/sec +30.4
Standard Memory Configuration – 1024 MB GDDR5
Memory Interface Width – 128-bit -64
Memory Clock – 2700 MHz (5400 MHz effective) +650 (1300)
Memory Bandwidth – 86.4 GB/sec -12
Texture Units (TMU) – 64 +32
Raster Operator Units (ROP) – 16 -8
Power connectors – 1x 6-pin PEG
Power consumption – 110W TDP -6
GPU Thermal Threshold – 98 degrees Celsius -2

* The numbers in red and green represent the upgrade or downgrade of the specific parameter in the GTX 650 Ti as compared to the GTX 550 1GB!

So the GeForce GTX 650 Ti is in overall a good successor for the GTX 550 Ti in terms of specifications and it should be offering a good performance increase as well, though according to Nvidia the people that should upgrade their GPU to the 650 Ti are probably the ones that are still using cards such as GeForce 9600 GT. And when talking about the competition, the GTX 650 Ti should be fighting with AMD’s Radeon HD 7770, but this goes as far as playing games in 2D, so what about stereoscopic 3D gaming?

The benchmark results above were achieved on a mid-range computer – MSI P55 motherboard, Intel Core i5 750 processor, 4GB RAM and Windows 7 64-bit, together with a reference GTX 650 Ti graphics card all of which were not overclocked. They games were ran at 1280×720 resolution in stereoscopic 3D mode with no AA, but the good thing about using AA filtering at 720p resolution is that it is really not as taxing as on 1080p resolution in terms of performance. So activating 4xAA in most games like the ones listed in the table only brings down the average FPS with something like 3-5 frames, and using 2xAA or 4xAA can really help in improving the visual quality at that resolution. So as expected, the GeForce GTX 650 Ti is a great card for more budget oriented stereoscopic 3D gamers that want to be able to play in stereo 3D mode on their 3D HDTV or 3D-capable projector at 720p resolution. If you want to be able to enjoy games in stereoscopic 3D mode on a 3D monitor at 1080p resolution you should consider going at least for GeForce GTX 660 Ti in order to get a good experience. On the other hand the GeForce GTX 650 Ti does perform quite well in Full HD resolution in most games if you don’t want to play them in stereoscopic 3D mode, and you can do that as well on a 3D HDTV, though with a 3D projector not all models that support 720p 3D mode do support 1080p in 2D as well.

So in the end the GeForce GTX 650 Ti is a nice card that you can get for $159 USD and be able to get good experience playing in 1080p in 2D mode or 720p in stereoscopic 3D mode. The card is small, does not consume a lot of energy, the cooling is silent and at the same time you get good performance out of it – a perfect combination for the not so demanding gamers or the ones with a more limited budget that cannot afford or just don’t need to buy the top models. Well done Nvidia.

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How Does an Integrated in a Monitor 3D Vision IR Emitter Look Like

September 14th, 2012 · 2 Comments · GeForce 3D Vision

Have you ever wondered how does the new infrared IR emitter integrated into the latest 3D Vision -Ready 3D-capable monitors look like? Well, wonder no more as you can see it on the photo above. The 3D Vision IR emitter on the photo is the one found inside Acer’s HN274HB 3D-ready monitor, though it should be pretty much the same as found in other models. The IR emitter module is connected directly to the monitor’s driver board and the connection seems quite solid, though at the same time quite a few people have had issues with integrated IR emitters not working properly or not detected as being connected with the last generation of 3D Vision 2 monitors. If you get an error message that the IR emitter is not connected you may try to open the display and connect it yourself (if it has been physically disconnected), it is not be that hard. Be warned however that opening your monitor will void the warranty, so open the monitor yourself only if you know what you are doing and have no other alternative – when returning it for repair or for replacement is not an option. Have in mind that if the IR emitter is not being detected or working properly there could as well be a defect in the hardware itself, and this is actually the case most of the time.

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The Importance of GPU over CPU in Stereoscopic 3D Gaming

September 13th, 2012 · 10 Comments · GeForce 3D Vision

If you have an older PC that you haven’t upgraded for a while and consider finally doing that in order to be able to play games in stereoscopic 3D mode you may think that you need to really do a serious upgrade of pretty much everything. And while you may not be that wrong in such an assumption, if you still have a decent processor and enough system memory the only thing that you may need to replace could be the video card in order to “get into the game”. The truth is that in the last few years the GPU has become way more important that the CPU in many areas and when talking about gaming and stereoscopic 3D gaming in particular it is even more important. With a high-end graphics card you may be able to get a good stereoscopic 3D experience even if you processor is not the latest generation and doesn’t have four or even more cores. The reason for that is that we’ve reached a state where the processors have become quite powerful performance wise, so that not that many programs (excluding most professional apps) can take full advantage of them… and the truth is that most games are not able to yet fully utilize the full performance of all the cores in a powerful processor, even if you play them in stereo 3D mode.

Lets not just talk about that, but give it a try to see how does the CPU performance affect the game performance in stereoscopic 3D mode. As an example I’ve used an Intel Core i5 2500K processor (3.3GHz Quad-core Sandy Bridge), on an Asus Sabertooth P67 motherboard, 4GB System Memory, and two GeForce GTX 580 video cards running in SLI mode under Windows 7. What I’ve done is to run five different recent and more demanding games on this setup at 1920×1080 resolution, maximum detail levels with no AA and in stereoscopic 3D mode using 3D Vision with the CPU at the default 4-core state (not overclocked), and then disable one, two and three of the cores so that the processor will behave as a single, dual, triple and quad-core. At each of these four states I’ve ran a benchmark and recorded the framerate as well as the CPU load of all of the available cores in each situation and you can see what are the results below…

As you can see from the table with results the situation is bad only when just a single core is enabled, the CPU load is hitting 100% while playing a game and the framerates are very low as clearly the processor is not able to deliver enough performance for the video cards to be utilized at their maximum potential. Note that the framerate listed is the average one in stereo 3D mode (the per eye value) and the CPU load in percentage is the one from all available cores. When we have two cores active not all games are hitting the maximum processor load and we can see up to double the framerate in some games as compared to when we have just one core, so clearly Dual-Core is the minimum for a decent experience nowadays. Going to three and four cores active we can see that the CPU load is gradually getting lower and the framerate is going just a little bit higher and the difference between 3 and 4-cores is even smaller.

So even if you have an older Dual-core processor you might still be able to enjoy good performance in games, even in stereoscopic 3D mode by just upgrading your video card to a more powerful and recent model and leaving your older CPU, motherboard and system memory for a while longer. So better spend on upgrading the video card now, instead of upgrading the CPU, motherboard and RAM at the moment and leaving the VGA upgrade for a later time if you have a more limited budget. As I’ve already said, the video card is way more important for stereoscopic 3D gaming compared to the processor, so with a more powerful GPU and not so powerful CPU you can still get good performance in games. Of course if you want to push for SLI with more video cards, go for multi-monitor setup and especially for multi-monitor combined with stereo 3D, the faster – the better, but again the video card(s) remain more important that the processor for gaming. So consider that the next time when you think about upgrading your gaming PC.

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