GeForce GTX 460 2GB vs Radeon R9 380 2G

Intro

Compare that to the Radeon R9 380 2G, which has GPU clock speed of 970 MHz, and 2048 MB of GDDR5 RAM set to run at 1425 MHz through a 256-bit bus. It also is made up of 1792 Stream Processors, 112 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460 2GB		160 Watts
Radeon R9 380 2G		190 Watts
	Difference: 30 Watts (19%)

Memory Bandwidth

The Radeon R9 380 2G, in theory, should be quite a bit faster than the GeForce GTX 460 2GB overall. (explain)

Radeon R9 380 2G		182400 MB/sec
GeForce GTX 460 2GB		115200 MB/sec
	Difference: 67200 (58%)

Texel Rate

The Radeon R9 380 2G will be a lot (more or less 187%) faster with regards to AF than the GeForce GTX 460 2GB. (explain)

Radeon R9 380 2G		108640 Mtexels/sec
GeForce GTX 460 2GB		37800 Mtexels/sec
	Difference: 70840 (187%)

Pixel Rate

The Radeon R9 380 2G is much (approximately 44%) better at full screen anti-aliasing than the GeForce GTX 460 2GB, and also should be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon R9 380 2G		31040 Mpixels/sec
GeForce GTX 460 2GB		21600 Mpixels/sec
	Difference: 9440 (44%)

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

Specifications

Memory Bandwidth: Bandwidth is the max amount of information (measured in MB per second) that can be transported past the external memory interface within a second. It is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 number of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the clock speed of the card. 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 many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.