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GeForce GTX 460 2GB vs Radeon HD 6790

Intro

The GeForce GTX 460 2GB features core clock speeds of 675 MHz on the GPU, and 900 MHz on the 2048 MB of GDDR5 RAM. It features 336 SPUs as well as 56 Texture Address Units and 32 Rasterization Operator Units.

Compare those specifications to the Radeon HD 6790, which features GPU clock speed of 840 MHz, and 1024 MB of GDDR5 memory running at 1050 MHz through a 256-bit bus. It also is made up of 800 Stream Processors, 40 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6790 150 Watts
GeForce GTX 460 2GB 160 Watts
Difference: 10 Watts (7%)

Memory Bandwidth

The Radeon HD 6790 should theoretically be a small bit faster than the GeForce GTX 460 2GB overall. (explain)

Radeon HD 6790 134400 MB/sec
GeForce GTX 460 2GB 115200 MB/sec
Difference: 19200 (17%)

Texel Rate

The GeForce GTX 460 2GB is a little bit (more or less 13%) better at anisotropic filtering than the Radeon HD 6790. (explain)

GeForce GTX 460 2GB 37800 Mtexels/sec
Radeon HD 6790 33600 Mtexels/sec
Difference: 4200 (13%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 460 2GB is the winner, by a large margin. (explain)

GeForce GTX 460 2GB 21600 Mpixels/sec
Radeon HD 6790 13440 Mpixels/sec
Difference: 8160 (61%)

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 2GB

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 2GB Radeon HD 6790
Manufacturer nVidia AMD
Year July 2010 April 2011
Code Name GF104 Barts LE
Memory 2048 MB 1024 MB
Core Speed 675 MHz 840 MHz
Memory Speed 3600 MHz 4200 MHz
Power (Max TDP) 160 watts 150 watts
Bandwidth 115200 MB/sec 134400 MB/sec
Texel Rate 37800 Mtexels/sec 33600 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 13440 Mpixels/sec
Unified Shaders 336 800
Texture Mapping Units 56 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: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be moved across the external memory interface in a second. It's calculated by multiplying the bus width by its memory speed. In the case of DDR type memory, the result 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 anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total number of texture units by the core 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 processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka 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, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

GeForce GTX 460 2GB

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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