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GeForce 9800 GX2 vs GeForce GTX 470

Intro

The GeForce 9800 GX2 features 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 Rasterization Operator Units.

Compare those specifications to the GeForce GTX 470, which uses a 40 nm design. nVidia has clocked the core speed at 607 MHz. The GDDR5 RAM works at a frequency of 837 MHz on this card. It features 448 SPUs as well as 56 Texture Address Units and 40 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GX2 197 Watts
GeForce GTX 470 215 Watts
Difference: 18 Watts (9%)

Memory Bandwidth

Performance-wise, the GeForce GTX 470 should in theory be a small bit superior to the GeForce 9800 GX2 overall. (explain)

GeForce GTX 470 133920 MB/sec
GeForce 9800 GX2 128000 MB/sec
Difference: 5920 (5%)

Texel Rate

The GeForce 9800 GX2 is a lot (about 126%) better at texture filtering than the GeForce GTX 470. (explain)

GeForce 9800 GX2 76800 Mtexels/sec
GeForce GTX 470 33992 Mtexels/sec
Difference: 42808 (126%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 470 is the winner, and very much so. (explain)

GeForce GTX 470 24280 Mpixels/sec
GeForce 9800 GX2 19200 Mpixels/sec
Difference: 5080 (26%)

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 470

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 470
Manufacturer nVidia nVidia
Year Mar 2008 March 2010
Code Name G92 GF100
Memory 512 MB (x2) 1280 MB
Core Speed 600 MHz (x2) 607 MHz
Memory Speed 2000 MHz (x2) 3348 MHz
Power (Max TDP) 197 watts 215 watts
Bandwidth 128000 MB/sec 133920 MB/sec
Texel Rate 76800 Mtexels/sec 33992 Mtexels/sec
Pixel Rate 19200 Mpixels/sec 24280 Mpixels/sec
Unified Shaders 128 (x2) 448
Texture Mapping Units 64 (x2) 56
Render Output Units 16 (x2) 40
Bus Type GDDR3 GDDR5
Bus Width 256-bit (x2) 320-bit
Fab Process 65 nm 40 nm
Transistors 754 million 3000 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 (measured in MB per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the 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 graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - 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 470

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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