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GeForce GTX 460 (OEM) vs Radeon HD 4790

Intro

The GeForce GTX 460 (OEM) has a GPU core speed of 650 MHz, and the 1024 MB of GDDR5 RAM runs at 850 MHz through a 256-bit bus. It also is made up of 336 SPUs, 56 Texture Address Units, and 32 Raster Operation Units.

Compare all of that to the Radeon HD 4790, which has core clock speeds of 600 MHz on the GPU, and 800 MHz on the 512 MB of GDDR5 RAM. It features 640(128x5) SPUs along with 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 (OEM) should be a bit faster than the Radeon HD 4790 in general. (explain)

GeForce GTX 460 (OEM) 108800 MB/sec
Radeon HD 4790 102400 MB/sec
Difference: 6400 (6%)

Texel Rate

The GeForce GTX 460 (OEM) is quite a bit (approximately 90%) more effective at texture filtering than the Radeon HD 4790. (explain)

GeForce GTX 460 (OEM) 36400 Mtexels/sec
Radeon HD 4790 19200 Mtexels/sec
Difference: 17200 (90%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 460 (OEM) is a better choice, by a large margin. (explain)

GeForce GTX 460 (OEM) 20800 Mpixels/sec
Radeon HD 4790 9600 Mpixels/sec
Difference: 11200 (117%)

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 (OEM)

Amazon.com

Check prices at:

Radeon HD 4790

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 (OEM) Radeon HD 4790
Manufacturer nVidia AMD
Year October 2010 2009
Code Name GF104 RV790
Memory 1024 MB 512 MB
Core Speed 650 MHz 600 MHz
Memory Speed 3400 MHz 3200 MHz
Power (Max TDP) 150 watts (Unknown) watts
Bandwidth 108800 MB/sec 102400 MB/sec
Texel Rate 36400 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 20800 Mpixels/sec 9600 Mpixels/sec
Unified Shaders 336 640(128x5)
Texture Mapping Units 56 32
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 1950 million 959 million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Bandwidth is the max amount of data (counted in MB per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, the result 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 AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 460 (OEM)

Amazon.com

Check prices at:

Radeon HD 4790

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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