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GeForce 9800 GX2 vs GeForce GTX 460 2GB

Intro

The GeForce 9800 GX2 features a GPU clock speed of 600 MHz, and the 512 MB of GDDR3 RAM runs at 1000 MHz through a 256-bit bus. It also is comprised of 128 Stream Processors, 64 TAUs, and 16 Raster Operation Units.

Compare those specs to the GeForce GTX 460 2GB, which comes with GPU core speed of 675 MHz, and 2048 MB of GDDR5 RAM running at 900 MHz through a 256-bit bus. It also is comprised of 336 Stream Processors, 56 TAUs, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460 2GB 160 Watts
GeForce 9800 GX2 197 Watts
Difference: 37 Watts (23%)

Memory Bandwidth

In theory, the GeForce 9800 GX2 should be 11% quicker than the GeForce GTX 460 2GB overall, because of its greater bandwidth. (explain)

GeForce 9800 GX2 128000 MB/sec
GeForce GTX 460 2GB 115200 MB/sec
Difference: 12800 (11%)

Texel Rate

The GeForce 9800 GX2 is a lot (more or less 103%) faster with regards to anisotropic filtering than the GeForce GTX 460 2GB. (explain)

GeForce 9800 GX2 76800 Mtexels/sec
GeForce GTX 460 2GB 37800 Mtexels/sec
Difference: 39000 (103%)

Pixel Rate

The GeForce GTX 460 2GB should be just a bit (approximately 13%) better at full screen anti-aliasing than the GeForce 9800 GX2, and should be able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 460 2GB 21600 Mpixels/sec
GeForce 9800 GX2 19200 Mpixels/sec
Difference: 2400 (13%)

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 460 2GB

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 460 2GB
Manufacturer nVidia nVidia
Year Mar 2008 July 2010
Code Name G92 GF104
Memory 512 MB (x2) 2048 MB
Core Speed 600 MHz (x2) 675 MHz
Memory Speed 2000 MHz (x2) 3600 MHz
Power (Max TDP) 197 watts 160 watts
Bandwidth 128000 MB/sec 115200 MB/sec
Texel Rate 76800 Mtexels/sec 37800 Mtexels/sec
Pixel Rate 19200 Mpixels/sec 21600 Mpixels/sec
Unified Shaders 128 (x2) 336
Texture Mapping Units 64 (x2) 56
Render Output Units 16 (x2) 32
Bus Type GDDR3 GDDR5
Bus Width 256-bit (x2) 256-bit
Fab Process 65 nm 40 nm
Transistors 754 million 1950 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 max amount of information (measured in MB per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, it must 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total amount of texture units of the card by the core 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. 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 potential to reach the maximum fill rate.

Display Prices

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GeForce 9800 GX2

Amazon.com

Check prices at:

GeForce GTX 460 2GB

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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