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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 frequency of 1000 MHz. It also uses a 256-bit memory bus, and makes use of a 65 nm design. It features 128 SPUs, 64 Texture Address Units, and 16 ROPs.

Compare all that to the GeForce GTX 570, which has core speeds of 732 MHz on the GPU, and 950 MHz on the 1280 MB of GDDR5 memory. It features 480 SPUs as well as 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 should in theory perform a little bit faster than the GeForce 9800 GX2 overall. (explain)

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

Texel Rate

The GeForce 9800 GX2 will be a lot (more or less 75%) faster with regards to 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

The GeForce GTX 570 will be a lot (more or less 53%) faster with regards to AA than the GeForce 9800 GX2, and also should be capable of handling higher resolutions without losing too much performance. (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 (counted in MB per second) that can be transported across the external memory interface in one second. It is worked out by multiplying the interface width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory 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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