This paper focuses on the study of productivity growth Class 8500GT graphics cards from using them with the standard GDDR3 memory, "instead of" situated in the State GDDR2 memory type. Today, we find out what will increase the productivity of the installation of a high-speed card 8500GT video card and compare it with the model class products 8600GT and 8500GT GDDR2.

With features 8500GT GDDR3 graphics cards, we learn about the case of Gigabyte based video production company. Apart from the "non-standard" memory, this video card is also atypical control scheme cooler. However, everything in order.

Video Gigabyte GV-NX85T256HP came to our laboratory in the OEM supply, ie, in the usual antistaticheskom package. Therefore, pictures will not be packing today that, however, does not detract from the dignity of most video cards, which you can see photos below. In assembling of the model provided to us for testing included adapters DVI / D-Sub and S-Video/HDTV-out, as well as the drivers.

As you can see, most of the surface of the printed circuit board closed radiator, which remains the same and some favoured it. The use of such a large radiator for cooling is not very "hot" videochipa suggests passive cooling, but the presence of cooler (albeit modest) has questioned the use of such a method of cooling. The reality was much more interesting. Engineers Gigabyte, famous for their passive cooling systems Silent Pipe, this time chose the path of compromise. That is - in 2D mode "passively cooled graphics card," not just because cooler blaze. When it gets any 3D application, cooler starts spinning and cooling becomes "active".

A good idea. Indeed, why us extra noise, "when the graphics card is not loaded." However, such a cooling system has some "psychological disadvantage" (subjective opinion of the author). When you install the video card in your computer and have incorporated it still kind of dull cooler can lead to confusion even experienced users because there is the idea "and not broken Does what?". It turns out that everything is as it should be. And since we got the test kit OEM-based video, read the instruction for use graphics card Gigabyte GV-NX85T256HP not. Hopefully, that the instructions of the user work its way to the cooling system is described in some detail.

Let's see how effectively cooling system for the video card Gigabyte GV-NX85T256HP to perform its duties.

We tested Gigabyte GV-NX85T256HP upright in a standard middle-tower lid off the side, not set hull cooler. Extreme left a mark in the box monitoring utilities RivaTuner corresponds 2D regime. Frequencies GPU / Graphics in this mode are equal, respectively - 500/1400 MHz, and video temperature of 76 °. The average mark corresponds to the time of the inclusion of 3D applications. As you can see, at this point the work of video frequency increases to 600 MHz, and its temperature is very impressive jumps to the level of 90 °, then cooler graphics card included in the work and the temperature stabilizes around that level (extreme right-mark on the graph).

Let subtotals. GPU Temperature alone does not represent a threat to his life, but still velikovata. Temperatures in the 3D mode is also quite high, so it may have to install hull cooler, and that extra noise, and only "thanks" one video card. We saw a similar picture in testing cards with SilentPipe technology, where decisions are worked almost on the verge.

Under cooler conceals itself Video and four video chips. Thermal contact between the chip video and no radiator.



On the reverse side of the printed circuit board does not particularly noteworthy, except that shows how radiator stands outside the rear boundary PCB.

As you can see, radiator is a solid piece of aluminum, painted in yellow. Heat pipes are used. The heat radiator contact with the GPU done with a "termozhvachki". Note another weakness cooling system Gigabyte GV-NX85T256HP rather the way in which it has anchorage. As you can see, despite the great geometric dimensions and weight, the radiator is mounted to print the entire motherboard podpruzhinennymi two stands, so the treatment of the video card Gigabyte GV-NX85T256HP grasping for the radiator strictly not recommended. At least provides flexible rack in the corners radiator. To some extent, this will help avoid the kernel GPU chips.

On the video card Gigabyte GV-NX85T256HP a typical GPU G86, but it looks like marking G86-303-A2 rather than G86-300-A2, as we have seen before. What linked the increase in the usual numbers three edinichki currently difficult to say. As already mentioned, in 2D mode video runs at 500 MHz, while in 3D mode its frequency is increased to 600 MHz.

The total amount of memory installed on the video card Gigabyte GV-NX85T256HP equal to 256 MB. We used standard GDDR3 chips from Hynix production time sampling 1.4 ns. Nominal frequency chips equal to DDR 1400 MHz, the frequency of this calibre and video works. The frequency of video is the same that in 2D, in 3D mode.