GeForce GTX Titan Black vs Radeon R9 M280X

Intro

Compare all of that to the Radeon R9 M280X, which comes with a clock frequency of 900 MHz and a GDDR5 memory frequency of 1375 MHz. It also makes use of a 128-bit memory bus, and uses a 28 nm design. It is made up of 896 SPUs, 56 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M280X		75 Watts
GeForce GTX Titan Black		250 Watts
	Difference: 175 Watts (233%)

Memory Bandwidth

The GeForce GTX Titan Black, in theory, should perform a lot faster than the Radeon R9 M280X overall. (explain)

GeForce GTX Titan Black		336000 MB/sec
Radeon R9 M280X		88000 MB/sec
	Difference: 248000 (282%)

Texel Rate

The GeForce GTX Titan Black should be much (more or less 323%) better at AF than the Radeon R9 M280X. (explain)

GeForce GTX Titan Black		213360 Mtexels/sec
Radeon R9 M280X		50400 Mtexels/sec
	Difference: 162960 (323%)

Pixel Rate

The GeForce GTX Titan Black is quite a bit (more or less 196%) more effective at AA than the Radeon R9 M280X, and also will be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX Titan Black		42672 Mpixels/sec
Radeon R9 M280X		14400 Mpixels/sec
	Difference: 28272 (196%)

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 (counted in MB per second) that can be moved across the external memory interface within a second. It is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, 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 the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.