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GeForce GTX 460 1GB vs Radeon HD 6790

Intro

The GeForce GTX 460 1GB has a GPU clock speed of 675 MHz, and the 1024 MB of GDDR5 RAM runs at 900 MHz through a 256-bit bus. It also features 336 Stream Processors, 56 TAUs, and 32 Raster Operation Units.

Compare those specifications to the Radeon HD 6790, which makes use of a 40 nm design. AMD has clocked the core frequency at 840 MHz. The GDDR5 memory is set to run at a speed of 1050 MHz on this specific card. It features 800 SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6790 150 Watts
GeForce GTX 460 1GB 160 Watts
Difference: 10 Watts (7%)

Memory Bandwidth

The Radeon HD 6790 should in theory be a little bit faster than the GeForce GTX 460 1GB overall. (explain)

Radeon HD 6790 134400 MB/sec
GeForce GTX 460 1GB 115200 MB/sec
Difference: 19200 (17%)

Texel Rate

The GeForce GTX 460 1GB will be just a bit (about 13%) faster with regards to anisotropic filtering than the Radeon HD 6790. (explain)

GeForce GTX 460 1GB 37800 Mtexels/sec
Radeon HD 6790 33600 Mtexels/sec
Difference: 4200 (13%)

Pixel Rate

The GeForce GTX 460 1GB should be a lot (about 61%) more effective at full screen anti-aliasing than the Radeon HD 6790, and will be able to handle higher resolutions better. (explain)

GeForce GTX 460 1GB 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 1GB

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 1GB Radeon HD 6790
Manufacturer nVidia AMD
Year July 2010 April 2011
Code Name GF104 Barts LE
Memory 1024 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: Bandwidth is the maximum amount of data (in units of MB per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the bus width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce GTX 460 1GB

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.

Comments

3 Responses to “GeForce GTX 460 1GB vs Radeon HD 6790”
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[NBA]graphics card in 12k - Page 4 says:

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