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GeForce 9800 GX2 vs GeForce GTX 570

Intro

The GeForce 9800 GX2 comes with a GPU core clock speed of 600 MHz, and the 512 MB of GDDR3 memory is set to run at 1000 MHz through a 256-bit bus. It also is made up of 128 SPUs, 64 Texture Address Units, and 16 ROPs.

Compare those specifications to the GeForce GTX 570, which makes use of a 40 nm design. nVidia has clocked the core frequency at 732 MHz. The GDDR5 RAM works at a speed of 950 MHz on this model. It features 480 SPUs along with 60 Texture Address Units and 40 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GX2 197 Watts
GeForce GTX 570 219 Watts
Difference: 22 Watts (11%)

Memory Bandwidth

The GeForce GTX 570, in theory, should perform just a bit faster than the GeForce 9800 GX2 in general. (explain)

GeForce GTX 570 152000 MB/sec
GeForce 9800 GX2 128000 MB/sec
Difference: 24000 (19%)

Texel Rate

The GeForce 9800 GX2 will be quite a bit (approximately 75%) more effective at anisotropic filtering than the GeForce GTX 570. (explain)

GeForce 9800 GX2 76800 Mtexels/sec
GeForce GTX 570 43920 Mtexels/sec
Difference: 32880 (75%)

Pixel Rate

The GeForce GTX 570 will be a lot (more or less 53%) more effective at anti-aliasing than the GeForce 9800 GX2, and able to handle higher resolutions more effectively. (explain)

GeForce GTX 570 29280 Mpixels/sec
GeForce 9800 GX2 19200 Mpixels/sec
Difference: 10080 (53%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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GeForce 9800 GX2

Amazon.com

Check prices at:

GeForce GTX 570

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce 9800 GX2 GeForce GTX 570
Manufacturer nVidia nVidia
Year Mar 2008 December 2010
Code Name G92 GF110
Memory 512 MB (x2) 1280 MB
Core Speed 600 MHz (x2) 732 MHz
Memory Speed 2000 MHz (x2) 3800 MHz
Power (Max TDP) 197 watts 219 watts
Bandwidth 128000 MB/sec 152000 MB/sec
Texel Rate 76800 Mtexels/sec 43920 Mtexels/sec
Pixel Rate 19200 Mpixels/sec 29280 Mpixels/sec
Unified Shaders 128 (x2) 480
Texture Mapping Units 64 (x2) 60
Render Output Units 16 (x2) 40
Bus Type GDDR3 GDDR5
Bus Width 256-bit (x2) 320-bit
Fab Process 65 nm 40 nm
Transistors 754 million 3000 million
Bus PCIe x16 2.0 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in megabytes per second) that can be transported over the external memory interface within a second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce 9800 GX2

Amazon.com

Check prices at:

GeForce GTX 570

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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