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GeForce GTX 460 (OEM) vs Radeon R5 M255

Intro

The GeForce GTX 460 (OEM) makes use of a 40 nm design. nVidia has clocked the core speed at 650 MHz. The GDDR5 memory is set to run at a speed of 850 MHz on this card. It features 336 SPUs as well as 56 TAUs and 32 ROPs.

Compare those specifications to the Radeon R5 M255, which features a GPU core clock speed of 940 MHz, and 2048 MB of DDR3 memory set to run at 1000 MHz through a 64-bit bus. It also is comprised of 320 SPUs, 20 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 (OEM) should be much faster than the Radeon R5 M255 overall. (explain)

GeForce GTX 460 (OEM) 108800 MB/sec
Radeon R5 M255 16000 MB/sec
Difference: 92800 (580%)

Texel Rate

The GeForce GTX 460 (OEM) will be much (approximately 94%) better at texture filtering than the Radeon R5 M255. (explain)

GeForce GTX 460 (OEM) 36400 Mtexels/sec
Radeon R5 M255 18800 Mtexels/sec
Difference: 17600 (94%)

Pixel Rate

The GeForce GTX 460 (OEM) will be quite a bit (more or less 177%) better at anti-aliasing than the Radeon R5 M255, and also should be able to handle higher resolutions more effectively. (explain)

GeForce GTX 460 (OEM) 20800 Mpixels/sec
Radeon R5 M255 7520 Mpixels/sec
Difference: 13280 (177%)

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 R5 M255

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 R5 M255
Manufacturer nVidia AMD
Year October 2010 June 2014
Code Name GF104 Jet Pro
Memory 1024 MB 2048 MB
Core Speed 650 MHz 940 MHz
Memory Speed 3400 MHz 2000 MHz
Power (Max TDP) 150 watts (Unknown) watts
Bandwidth 108800 MB/sec 16000 MB/sec
Texel Rate 36400 Mtexels/sec 18800 Mtexels/sec
Pixel Rate 20800 Mpixels/sec 7520 Mpixels/sec
Unified Shaders 336 320
Texture Mapping Units 56 20
Render Output Units 32 8
Bus Type GDDR5 DDR3
Bus Width 256-bit 64-bit
Fab Process 40 nm 28 nm
Transistors 1950 million (Unknown) million
Bus PCIe x16 PCIe 3.0 x8
DirectX Version DirectX 11 DirectX 11.2
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster 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 are applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the 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 maximum amount of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce GTX 460 (OEM)

Amazon.com

Check prices at:

Radeon R5 M255

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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