|by Michael "SKYMTL" Hoenig | January 19, 2009|
Additional Features of the GT200 Architecture
Additional Features of the GT200 Architecture
Yes, there is more than what we have already mentioned in the last few sections when it comes to the new GTX 280 / 285 and GTX 260 cards. Nvidia has packed their new flagships with more features than you can shake a stick at so let’s go over a few of them which may impact you.
As multi-GPU solutions become more and more popular Nvidia is moving towards giving consumers the option to run as many as 3 graphics cards together in order to increase performance to insane levels. Before the release of the 9800GTX, the only cards available for 3-way SLI were the 8800GTX and 8800 Ultra so the GTX 280 / 285 and GTX 260 cards have now become the fourth and fifth cards to use this technology. Just be prepared to fork over some megabucks for this privilege since not only would you need God’s Own CPU but at about $1500 for a trio of 280 cards and $1000 for three 260 cards. That is a pretty bitter pill for just about anyone to swallow.
Optional Full HDMI Output
All GTX 280 and GTX 260 cards come with the option for full HDMI output over a DVI to HDMI adaptor. Notice we said “option”? While GT200 cards will come with an SPDIF input connector on the card itself, the board partner has to choose whether or not to include a DVI to HDMI dongle so the card can output both sound and images through a HDMI cable. Coupled with the fact that the new GTXes fully support HDCP, this feature can make this card into a multimedia powerhouse. Unfortunately, in order to keep costs down we are sure that there will be quite a few manufacturers who will see fit not to include the necessary hardware for HDMI support. With this in mind, make sure you keep a close eye on the accessories offered with the card of your choice if you want full HDMI support without having to buy a separate dongle.
To be honest with you, this strikes us as a tad odd since if we are paying upwards of $400 for a card, we would expect there to be an integrated HDMI connector a la GX2. Making the DVI to HDMI dongle optional smacks of some serious penny-pinching.
To put it into a nutshell, Purevideo HD is Nvidia’s video processing software that offloads up to 100% of the high definition video encoding tasks from your CPU onto your GPU. In theory, this will result in lower power consumption, better feature support for Blu-ray and HD-DVD and better picture quality.
In addition to dynamic contrast enhancement, Purevideo HD has a new feature called Color Tone Enhancement. This feature will dynamically increase the realism and vibrancy for green and blue colors as well as skin tones.
By far, on of the most interesting features supported by the 200-series is Nvidia’s new Hybridpower which is compatible with HybridPower-equipped motherboards like the upcoming 780a and 750a units for AMD AM2 and AM2+ processors. It allows you to shift power between the integrated GPU and your card so if you aren’t gaming, you can switch to integrated graphics to save on power, noise and heat.
While we have not seen if this works, it is definitely an interesting concept since it should allow for quite a bit of flexibility between gaming and less GPU-intensive tasks. There has been more than once where I have been working in Word in the summer where I wished my machine would produce less heat so I wouldn’t be roasting like a stuffed turkey. If this technology can deliver on what it promises, this technology would be great for people who want a high-powered graphics card by night and a word processing station by day.
This technology even works if you have GTX 280 / 285 or 260 cards working in SLI and once again you should (in theory) be able to shut down the two high-powered cards when you don’t need them.
All HybridPower-equipped motherboards come with both DVI and VGA output connectors since all video signals from both the on-board GPU and any additional graphics cards go through the integrated GPU. This means you will not have to switch the connector when turning on and off the power-hungry add-in graphics cards. All in all, this looks to be great on paper but we will have to see in the near future if it can actually work as well as it claims to. In terms of power savings, this could be a huge innovation.
Additional Power Saving Methods
Other than the aforementioned HybridPower, the GT200-series for cards have some other very interesting power savings features. With the dynamic clock and voltage settings, Nvidia has further been able to reduce power consumption when the system is at idle so if you are using a program that doesn’t require the GPU to work, you don’t have to worry about it consuming copious amounts of power. The same goes for heat since as power consumption decreases so does the heat output from the core. I don’t know about you but I hate sweating like a pig while using Photoshop just because my GPU wants to dump hot air back into the room and with this feature hopefully these sweat sessions will be a thing of the past.
Additionally, Nvidia has added a power saving feature for HD decoding as well. Since the card doesn’t need full power to decode a high definition movie, voltages will be decreased from what they would be in full 3D mode which will once again result in less power draw and heat.
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