GeForce GTX 580 3GB vs Radeon R9 M380

Intro

Compare those specs to the Radeon R9 M380, which comes with a GPU core clock speed of 1000 MHz, and 4096 MB of GDDR5 RAM set to run at 1500 MHz through a 128-bit bus. It also features 640 Stream Processors, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce GTX 580 3GB, in theory, should perform much faster than the Radeon R9 M380 in general. (explain)

GeForce GTX 580 3GB		192384 MB/sec
Radeon R9 M380		96000 MB/sec
	Difference: 96384 (100%)

Texel Rate

The GeForce GTX 580 3GB will be quite a bit (approximately 24%) faster with regards to texture filtering than the Radeon R9 M380. (explain)

GeForce GTX 580 3GB		49408 Mtexels/sec
Radeon R9 M380		40000 Mtexels/sec
	Difference: 9408 (24%)

Pixel Rate

The GeForce GTX 580 3GB is much (about 132%) faster with regards to full screen anti-aliasing than the Radeon R9 M380, and also will be able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 580 3GB		37056 Mpixels/sec
Radeon R9 M380		16000 Mpixels/sec
	Difference: 21056 (132%)

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 data (in units of megabytes per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 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 high resolutions.

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

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