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GeForce 9800 GX2 vs GeForce GTX 460 SE

Intro

The GeForce 9800 GX2 comes with a clock frequency of 600 MHz and a GDDR3 memory frequency of 1000 MHz. It also features a 256-bit memory bus, and makes use of a 65 nm design. It is comprised of 128 SPUs, 64 Texture Address Units, and 16 Raster Operation Units.

Compare those specs to the GeForce GTX 460 SE, which makes use of a 40 nm design. nVidia has clocked the core frequency at 650 MHz. The GDDR5 RAM is set to run at a frequency of 850 MHz on this particular model. It features 288 SPUs as well as 48 Texture Address Units and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460 SE 150 Watts
GeForce 9800 GX2 197 Watts
Difference: 47 Watts (31%)

Memory Bandwidth

Theoretically speaking, the GeForce 9800 GX2 should be a small bit faster than the GeForce GTX 460 SE overall. (explain)

GeForce 9800 GX2 128000 MB/sec
GeForce GTX 460 SE 108800 MB/sec
Difference: 19200 (18%)

Texel Rate

The GeForce 9800 GX2 will be a lot (approximately 146%) faster with regards to texture filtering than the GeForce GTX 460 SE. (explain)

GeForce 9800 GX2 76800 Mtexels/sec
GeForce GTX 460 SE 31200 Mtexels/sec
Difference: 45600 (146%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 460 SE is superior to the GeForce 9800 GX2, not by a very large margin though. (explain)

GeForce GTX 460 SE 20800 Mpixels/sec
GeForce 9800 GX2 19200 Mpixels/sec
Difference: 1600 (8%)

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 SE

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 SE
Manufacturer nVidia nVidia
Year Mar 2008 November 2010
Code Name G92 GF104
Memory 512 MB (x2) 1024 MB
Core Speed 600 MHz (x2) 650 MHz
Memory Speed 2000 MHz (x2) 3400 MHz
Power (Max TDP) 197 watts 150 watts
Bandwidth 128000 MB/sec 108800 MB/sec
Texel Rate 76800 Mtexels/sec 31200 Mtexels/sec
Pixel Rate 19200 Mpixels/sec 20800 Mpixels/sec
Unified Shaders 128 (x2) 288
Texture Mapping Units 64 (x2) 48
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 largest amount of data (in units of MB per second) that can be transferred past the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the 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 amount of pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory 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 460 SE

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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