Radeon HD 5850 vs Radeon R7 250X 2GB

Intro

Compare those specs to the Radeon R7 250X 2GB, which features core clock speeds of 1000 MHz on the GPU, and 1125 MHz on the 2048 MB of GDDR5 memory. It features 640 SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 2GB		95 Watts
Radeon HD 5850		151 Watts
	Difference: 56 Watts (59%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5850 should in theory be a lot better than the Radeon R7 250X 2GB in general. (explain)

Radeon HD 5850		128000 MB/sec
Radeon R7 250X 2GB		72000 MB/sec
	Difference: 56000 (78%)

Texel Rate

The Radeon HD 5850 should be much (about 31%) better at anisotropic filtering than the Radeon R7 250X 2GB. (explain)

Radeon HD 5850		52200 Mtexels/sec
Radeon R7 250X 2GB		40000 Mtexels/sec
	Difference: 12200 (31%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 5850 is the winner, and very much so. (explain)

Radeon HD 5850		23200 Mpixels/sec
Radeon R7 250X 2GB		16000 Mpixels/sec
	Difference: 7200 (45%)

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 max amount of information (measured in megabytes per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.