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GeForce GTX 460 SE vs Radeon HD 6790

Intro

The GeForce GTX 460 SE comes with a clock speed of 650 MHz and a GDDR5 memory speed of 850 MHz. It also uses a 256-bit bus, and uses a 40 nm design. It is comprised of 288 SPUs, 48 TAUs, and 32 Raster Operation Units.

Compare that to the Radeon HD 6790, which comes with a core clock frequency of 840 MHz and a GDDR5 memory speed of 1050 MHz. It also features a 256-bit memory bus, and makes use of a 40 nm design. It features 800 SPUs, 40 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

As far as performance goes, the Radeon HD 6790 should in theory be quite a bit better than the GeForce GTX 460 SE overall. (explain)

Radeon HD 6790 134400 MB/sec
GeForce GTX 460 SE 108800 MB/sec
Difference: 25600 (24%)

Texel Rate

The Radeon HD 6790 will be a little bit (about 8%) faster with regards to AF than the GeForce GTX 460 SE. (explain)

Radeon HD 6790 33600 Mtexels/sec
GeForce GTX 460 SE 31200 Mtexels/sec
Difference: 2400 (8%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 460 SE is the winner, by far. (explain)

GeForce GTX 460 SE 20800 Mpixels/sec
Radeon HD 6790 13440 Mpixels/sec
Difference: 7360 (55%)

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 GTX 460 SE

Amazon.com

Check prices at:

Radeon HD 6790

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 GTX 460 SE Radeon HD 6790
Manufacturer nVidia AMD
Year November 2010 April 2011
Code Name GF104 Barts LE
Memory 1024 MB 1024 MB
Core Speed 650 MHz 840 MHz
Memory Speed 3400 MHz 4200 MHz
Power (Max TDP) 150 watts 150 watts
Bandwidth 108800 MB/sec 134400 MB/sec
Texel Rate 31200 Mtexels/sec 33600 Mtexels/sec
Pixel Rate 20800 Mpixels/sec 13440 Mpixels/sec
Unified Shaders 288 800
Texture Mapping Units 48 40
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 40 nm
Transistors 1950 million 1700 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Bandwidth is the largest amount of data (counted in megabytes per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. 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 texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total number of 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 processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to its 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 sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce GTX 460 SE

Amazon.com

Check prices at:

Radeon HD 6790

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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