GeForce GTX 460 SE vs Radeon R9 M380

Intro

Compare those specs to the Radeon R9 M380, which comes with clock speeds of 1000 MHz on the GPU, and 1500 MHz on the 4096 MB of GDDR5 RAM. It features 640 SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 SE is 13% quicker than the Radeon R9 M380 overall, because of its greater bandwidth. (explain)

GeForce GTX 460 SE		108800 MB/sec
Radeon R9 M380		96000 MB/sec
	Difference: 12800 (13%)

Texel Rate

The Radeon R9 M380 will be much (more or less 28%) better at texture filtering than the GeForce GTX 460 SE. (explain)

Radeon R9 M380		40000 Mtexels/sec
GeForce GTX 460 SE		31200 Mtexels/sec
	Difference: 8800 (28%)

Pixel Rate

The GeForce GTX 460 SE should be much (about 30%) better at FSAA than the Radeon R9 M380, and able to handle higher resolutions more effectively. (explain)

GeForce GTX 460 SE		20800 Mpixels/sec
Radeon R9 M380		16000 Mpixels/sec
	Difference: 4800 (30%)

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 largest amount of information (counted in megabytes per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the bus width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics 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 amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.