GeForce GTX Titan Black vs Radeon R9 M380

Intro

Compare those specifications to the Radeon R9 M380, which has 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 is made up of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the GeForce GTX Titan Black should be quite a bit faster than the Radeon R9 M380 overall. (explain)

GeForce GTX Titan Black		336000 MB/sec
Radeon R9 M380		96000 MB/sec
	Difference: 240000 (250%)

Texel Rate

The GeForce GTX Titan Black will be a lot (about 433%) faster with regards to texture filtering than the Radeon R9 M380. (explain)

GeForce GTX Titan Black		213360 Mtexels/sec
Radeon R9 M380		40000 Mtexels/sec
	Difference: 173360 (433%)

Pixel Rate

The GeForce GTX Titan Black will be quite a bit (approximately 167%) faster with regards to full screen anti-aliasing than the Radeon R9 M380, and able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX Titan Black		42672 Mpixels/sec
Radeon R9 M380		16000 Mpixels/sec
	Difference: 26672 (167%)

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 data (measured in megabytes per second) that can be transferred over the external memory interface within a second. It's calculated by multiplying the interface width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.