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GeForce 9800 GX2 vs GeForce GTX 460 (OEM)

Intro

The GeForce 9800 GX2 comes with core speeds of 600 MHz on the GPU, and 1000 MHz on the 512 MB of GDDR3 RAM. It features 128 SPUs along with 64 TAUs and 16 ROPs.

Compare those specs to the GeForce GTX 460 (OEM), which has a clock speed of 650 MHz and a GDDR5 memory frequency of 850 MHz. It also features a 256-bit bus, and uses a 40 nm design. It features 336 SPUs, 56 Texture Address Units, and 32 Raster Operation Units.

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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

As far as performance goes, the GeForce 9800 GX2 should in theory be a small bit superior to the GeForce GTX 460 (OEM) overall. (explain)

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

Texel Rate

The GeForce 9800 GX2 is quite a bit (approximately 111%) better at AF 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

The GeForce GTX 460 (OEM) should be a bit (more or less 8%) faster with regards to FSAA than the GeForce 9800 GX2, and also will be capable of handling higher resolutions without slowing down too much. (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 max amount of data (in units of megabytes per second) that can be moved over the external memory interface in one second. It's worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

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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