Radeon HD 5570 vs Radeon R7 250X

Intro

Compare all of that to the Radeon R7 250X, which has GPU core speed of 1000 MHz, and 1024 MB of GDDR5 memory set to run at 1125 MHz through a 128-bit bus. It also is made up of 640 Stream Processors, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570		43 Watts
Radeon R7 250X		95 Watts
	Difference: 52 Watts (121%)

Memory Bandwidth

As far as performance goes, the Radeon R7 250X should in theory be much superior to the Radeon HD 5570 overall. (explain)

Radeon R7 250X		72000 MB/sec
Radeon HD 5570		28800 MB/sec
	Difference: 43200 (150%)

Texel Rate

The Radeon R7 250X will be quite a bit (about 208%) better at anisotropic filtering than the Radeon HD 5570. (explain)

Radeon R7 250X		40000 Mtexels/sec
Radeon HD 5570		13000 Mtexels/sec
	Difference: 27000 (208%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R7 250X is a better choice, by far. (explain)

Radeon R7 250X		16000 Mpixels/sec
Radeon HD 5570		5200 Mpixels/sec
	Difference: 10800 (208%)

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 data (in units of MB per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher 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 amount of pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the card's 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 fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.