GeForce GTX Titan Black vs Radeon R9 M385X

Intro

Compare all that to the Radeon R9 M385X, which comes with GPU core speed of 1100 MHz, and 4096 MB of GDDR5 RAM running at 1500 MHz through a 128-bit bus. It also is made up of 896 Stream Processors, 56 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GTX Titan Black is 250% faster than the Radeon R9 M385X in general, due to its higher data rate. (explain)

GeForce GTX Titan Black		336000 MB/sec
Radeon R9 M385X		96000 MB/sec
	Difference: 240000 (250%)

Texel Rate

The GeForce GTX Titan Black is much (more or less 246%) more effective at AF than the Radeon R9 M385X. (explain)

GeForce GTX Titan Black		213360 Mtexels/sec
Radeon R9 M385X		61600 Mtexels/sec
	Difference: 151760 (246%)

Pixel Rate

The GeForce GTX Titan Black is quite a bit (approximately 142%) faster with regards to full screen anti-aliasing than the Radeon R9 M385X, and should be able to handle higher resolutions more effectively. (explain)

GeForce GTX Titan Black		42672 Mpixels/sec
Radeon R9 M385X		17600 Mpixels/sec
	Difference: 25072 (142%)

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 (in units of MB per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.