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GeForce 9800 GTX vs Radeon HD 6750

Intro

The GeForce 9800 GTX comes with a GPU core clock speed of 675 MHz, and the 512 MB of GDDR3 memory is set to run at 1100 MHz through a 256-bit bus. It also features 128 Stream Processors, 64 TAUs, and 16 Raster Operation Units.

Compare all that to the Radeon HD 6750, which features GPU core speed of 725 MHz, and 512 MB of GDDR5 memory set to run at 1000 MHz through a 128-bit bus. It also is comprised of 720 SPUs, 36 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750 86 Watts
GeForce 9800 GTX 140 Watts
Difference: 54 Watts (63%)

Memory Bandwidth

The GeForce 9800 GTX, in theory, should be a little bit faster than the Radeon HD 6750 overall. (explain)

GeForce 9800 GTX 70400 MB/sec
Radeon HD 6750 64000 MB/sec
Difference: 6400 (10%)

Texel Rate

The GeForce 9800 GTX should be quite a bit (about 66%) better at anisotropic filtering than the Radeon HD 6750. (explain)

GeForce 9800 GTX 43200 Mtexels/sec
Radeon HD 6750 26100 Mtexels/sec
Difference: 17100 (66%)

Pixel Rate

The Radeon HD 6750 will be a small bit (approximately 7%) faster with regards to full screen anti-aliasing than the GeForce 9800 GTX, and also will be able to handle higher resolutions without slowing down too much. (explain)

Radeon HD 6750 11600 Mpixels/sec
GeForce 9800 GTX 10800 Mpixels/sec
Difference: 800 (7%)

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.

Price Comparison

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GeForce 9800 GTX

Amazon.com

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Radeon HD 6750

Amazon.com

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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 GTX Radeon HD 6750
Manufacturer nVidia AMD
Year April 2008 January 2011
Code Name G92 Juniper Pro
Memory 512 MB 512 MB
Core Speed 675 MHz 725 MHz
Memory Speed 2200 MHz 4000 MHz
Power (Max TDP) 140 watts 86 watts
Bandwidth 70400 MB/sec 64000 MB/sec
Texel Rate 43200 Mtexels/sec 26100 Mtexels/sec
Pixel Rate 10800 Mpixels/sec 11600 Mpixels/sec
Unified Shaders 128 720
Texture Mapping Units 64 36
Render Output Units 16 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 65 nm 40 nm
Transistors 754 million 1040 million
Bus PCIe x16 2.0 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.0

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of MB per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce 9800 GTX

Amazon.com

Check prices at:

Radeon HD 6750

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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