GeForce GTX 460 vs Radeon R9 M380

Intro

Compare all that to the Radeon R9 M380, which comes with GPU clock speed of 1000 MHz, and 4096 MB of GDDR5 RAM running at 1500 MHz through a 128-bit bus. It also is made up of 640 Stream Processors, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M380, in theory, should be a little bit faster than the GeForce GTX 460 overall. (explain)

Radeon R9 M380		96000 MB/sec
GeForce GTX 460		86400 MB/sec
	Difference: 9600 (11%)

Texel Rate

The Radeon R9 M380 is a small bit (about 6%) faster with regards to texture filtering than the GeForce GTX 460. (explain)

Radeon R9 M380		40000 Mtexels/sec
GeForce GTX 460		37800 Mtexels/sec
	Difference: 2200 (6%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 460 is the winner, though only just barely. (explain)

GeForce GTX 460		16200 Mpixels/sec
Radeon R9 M380		16000 Mpixels/sec
	Difference: 200 (1%)

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 maximum amount of information (measured in megabytes per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the interface width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 processed per second. This figure is calculated by multiplying the total texture units 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 processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel 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.