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GeForce 9800 GX2 vs Geforce GTX 670

Intro

The GeForce 9800 GX2 has a GPU core speed of 600 MHz, and the 512 MB of GDDR3 memory runs at 1000 MHz through a 256-bit bus. It also is comprised of 128 SPUs, 64 Texture Address Units, and 16 ROPs.

Compare those specifications to the Geforce GTX 670, which comes with clock speeds of 915 MHz on the GPU, and 1500 MHz on the 2048 MB of GDDR5 memory. It features 1344 SPUs as well as 112 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 670 170 Watts
GeForce 9800 GX2 197 Watts
Difference: 27 Watts (16%)

Memory Bandwidth

The Geforce GTX 670 should theoretically perform a lot faster than the GeForce 9800 GX2 in general. (explain)

Geforce GTX 670 192000 MB/sec
GeForce 9800 GX2 128000 MB/sec
Difference: 64000 (50%)

Texel Rate

The Geforce GTX 670 should be a lot (about 33%) better at texture filtering than the GeForce 9800 GX2. (explain)

Geforce GTX 670 102480 Mtexels/sec
GeForce 9800 GX2 76800 Mtexels/sec
Difference: 25680 (33%)

Pixel Rate

The Geforce GTX 670 will be quite a bit (more or less 53%) better at anti-aliasing than the GeForce 9800 GX2, and also will be able to handle higher resolutions without slowing down too much. (explain)

Geforce GTX 670 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 670

Amazon.com

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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 670
Manufacturer nVidia nVidia
Year Mar 2008 May 2012
Code Name G92 GK104
Memory 512 MB (x2) 2048 MB
Core Speed 600 MHz (x2) 915 MHz
Memory Speed 2000 MHz (x2) 6000 MHz
Power (Max TDP) 197 watts 170 watts
Bandwidth 128000 MB/sec 192000 MB/sec
Texel Rate 76800 Mtexels/sec 102480 Mtexels/sec
Pixel Rate 19200 Mpixels/sec 29280 Mpixels/sec
Unified Shaders 128 (x2) 1344
Texture Mapping Units 64 (x2) 112
Render Output Units 16 (x2) 32
Bus Type GDDR3 GDDR5
Bus Width 256-bit (x2) 256-bit
Fab Process 65 nm 28 nm
Transistors 754 million 3540 million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.0
OpenGL Version OpenGL 3.0 OpenGL 4.2

Memory Bandwidth: Bandwidth is the largest amount of information (in units of MB per second) that can be moved across the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better 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 can be processed per second. This figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce 9800 GX2

Amazon.com

Check prices at:

Geforce GTX 670

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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