GeForce GTX Titan Black vs Radeon R7 250X 2GB

Intro

Compare those specs to the Radeon R7 250X 2GB, which makes use of a 28 nm design. AMD has clocked the core speed at 1000 MHz. The GDDR5 memory works at a speed of 1125 MHz on this particular model. It features 640 SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 2GB		95 Watts
GeForce GTX Titan Black		250 Watts
	Difference: 155 Watts (163%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX Titan Black should be 367% quicker than the Radeon R7 250X 2GB overall, because of its greater bandwidth. (explain)

GeForce GTX Titan Black		336000 MB/sec
Radeon R7 250X 2GB		72000 MB/sec
	Difference: 264000 (367%)

Texel Rate

The GeForce GTX Titan Black is much (more or less 433%) better at AF than the Radeon R7 250X 2GB. (explain)

GeForce GTX Titan Black		213360 Mtexels/sec
Radeon R7 250X 2GB		40000 Mtexels/sec
	Difference: 173360 (433%)

Pixel Rate

The GeForce GTX Titan Black will be a lot (more or less 167%) better at anti-aliasing than the Radeon R7 250X 2GB, and should be capable of handling higher resolutions better. (explain)

GeForce GTX Titan Black		42672 Mpixels/sec
Radeon R7 250X 2GB		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 (in units of megabytes per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the video card will be at handling 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 video card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant 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.