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GeForce 9800 GX2 vs GeForce GTX 570

Intro

The GeForce 9800 GX2 comes with a core clock speed of 600 MHz and a GDDR3 memory speed of 1000 MHz. It also makes use of a 256-bit memory bus, and uses a 65 nm design. It is comprised of 128 SPUs, 64 TAUs, and 16 ROPs.

Compare those specifications to the GeForce GTX 570, which comes with GPU clock speed of 732 MHz, and 1280 MB of GDDR5 RAM set to run at 950 MHz through a 320-bit bus. It also is comprised of 480 Stream Processors, 60 TAUs, and 40 Raster Operation Units.

Display Graphs

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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

Theoretically, the GeForce GTX 570 should be 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 should be quite a bit (more or less 75%) more effective at texture filtering than the GeForce GTX 570. (explain)

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

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 570 is a better choice, by far. (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: Bandwidth is the largest amount of information (measured in MB per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the interface width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics 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 a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max 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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