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GeForce 9800 GX2 vs GeForce GTX 460 (OEM)

Intro

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

Compare all of that to the GeForce GTX 460 (OEM), which has a core clock frequency of 650 MHz and a GDDR5 memory speed of 850 MHz. It also features a 256-bit bus, and uses a 40 nm design. It is made up of 336 SPUs, 56 Texture Address Units, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

In theory, the GeForce 9800 GX2 should perform a little bit faster than the GeForce GTX 460 (OEM) in general. (explain)

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

Texel Rate

The GeForce 9800 GX2 is much (about 111%) more effective at anisotropic filtering than the GeForce GTX 460 (OEM). (explain)

GeForce 9800 GX2 76800 Mtexels/sec
GeForce GTX 460 (OEM) 36400 Mtexels/sec
Difference: 40400 (111%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 460 (OEM) is a better choice, but only just. (explain)

GeForce GTX 460 (OEM) 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 (OEM)

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 (OEM)
Manufacturer nVidia nVidia
Year Mar 2008 October 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 36400 Mtexels/sec
Pixel Rate 19200 Mpixels/sec 20800 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: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be moved over the external memory interface in one second. It's calculated by multiplying the interface width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth of the card - the lower the 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 460 (OEM)

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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