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GeForce 9800 GTX vs Radeon HD 6750

Intro

The GeForce 9800 GTX comes with a clock frequency of 675 MHz and a GDDR3 memory frequency of 1100 MHz. It also uses a 256-bit memory bus, and uses a 65 nm design. It is made up of 128 SPUs, 64 TAUs, and 16 Raster Operation Units.

Compare those specs to the Radeon HD 6750, which has a clock frequency of 725 MHz and a GDDR5 memory speed of 1000 MHz. It also features a 128-bit bus, and uses a 40 nm design. It is made up of 720 SPUs, 36 TAUs, and 16 ROPs.

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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 should theoretically perform a little bit faster than the Radeon HD 6750 in general. (explain)

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

Texel Rate

The GeForce 9800 GTX will be quite a bit (approximately 66%) better at texture 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 is a small bit (about 7%) more effective at full screen anti-aliasing than the GeForce 9800 GTX, and should be capable of handling 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

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.

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 largest amount of information (in units of MB per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the 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 number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends 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 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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