GeForce GTX Titan Black vs Radeon R9 M275X

Intro

Compare all of that to the Radeon R9 M275X, which comes with a GPU core clock speed of 900 MHz, and 2048 MB of GDDR5 memory running at 1125 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

Power Consumption (Max TDP)

Radeon R9 M275X		50 Watts
GeForce GTX Titan Black		250 Watts
	Difference: 200 Watts (400%)

Memory Bandwidth

In theory, the GeForce GTX Titan Black should perform quite a bit faster than the Radeon R9 M275X overall. (explain)

GeForce GTX Titan Black		336000 MB/sec
Radeon R9 M275X		72000 MB/sec
	Difference: 264000 (367%)

Texel Rate

The GeForce GTX Titan Black will be much (approximately 493%) better at texture filtering than the Radeon R9 M275X. (explain)

GeForce GTX Titan Black		213360 Mtexels/sec
Radeon R9 M275X		36000 Mtexels/sec
	Difference: 177360 (493%)

Pixel Rate

The GeForce GTX Titan Black should be much (about 196%) faster with regards to full screen anti-aliasing than the Radeon R9 M275X, and also will be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX Titan Black		42672 Mpixels/sec
Radeon R9 M275X		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: Memory bandwidth is the largest amount of information (measured in 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 its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 amount of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.