Radeon HD 5670 vs Radeon R7 250X 2GB

Intro

Compare those specs to the Radeon R7 250X 2GB, which features GPU core speed of 1000 MHz, and 2048 MB of GDDR5 memory running at 1125 MHz through a 128-bit bus. It also is comprised 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 5670		61 Watts
Radeon R7 250X 2GB		95 Watts
	Difference: 34 Watts (56%)

Memory Bandwidth

In theory, the Radeon R7 250X 2GB should be 13% faster than the Radeon HD 5670 in general, due to its greater bandwidth. (explain)

Radeon R7 250X 2GB		72000 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 8000 (13%)

Texel Rate

The Radeon R7 250X 2GB will be much (approximately 158%) faster with regards to anisotropic filtering than the Radeon HD 5670. (explain)

Radeon R7 250X 2GB		40000 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 24500 (158%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R7 250X 2GB is superior to the Radeon HD 5670, by far. (explain)

Radeon R7 250X 2GB		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: Memory bandwidth is the max amount of data (measured in megabytes per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the interface width by its memory clock speed. In the case of 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, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of 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 output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.