Radeon HD 5670 vs Radeon R7 250X

Intro

Compare those specifications to the Radeon R7 250X, which features a core clock speed of 1000 MHz and a GDDR5 memory speed of 1125 MHz. It also uses a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 640 SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
Radeon R7 250X		95 Watts
	Difference: 34 Watts (56%)

Memory Bandwidth

As far as performance goes, the Radeon R7 250X should in theory be a small bit better than the Radeon HD 5670 overall. (explain)

Radeon R7 250X		72000 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 8000 (13%)

Texel Rate

The Radeon R7 250X is quite a bit (about 158%) better at AF than the Radeon HD 5670. (explain)

Radeon R7 250X		40000 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 24500 (158%)

Pixel Rate

The Radeon R7 250X should be a lot (more or less 158%) better at FSAA than the Radeon HD 5670, and also will be able to handle higher resolutions without slowing down too much. (explain)

Radeon R7 250X		16000 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 9800 (158%)

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 (counted in megabytes per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the bus width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total texture units of the card by the core 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 a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also 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 memory bandwidth is, the lower the ability to get to the max fill rate.