Radeon HD 5670 vs Radeon R9 270X

Intro

Compare all of that to the Radeon R9 270X, which features a core clock speed of 1000 MHz and a GDDR5 memory frequency of 1400 MHz. It also uses a 256-bit bus, and uses a 28 nm design. It is made up of 1280 SPUs, 80 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
Radeon R9 270X		180 Watts
	Difference: 119 Watts (195%)

Memory Bandwidth

In theory, the Radeon R9 270X is 180% quicker than the Radeon HD 5670 in general, because of its greater data rate. (explain)

Radeon R9 270X		179200 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 115200 (180%)

Texel Rate

The Radeon R9 270X is quite a bit (more or less 416%) more effective at AF than the Radeon HD 5670. (explain)

Radeon R9 270X		80000 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 64500 (416%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 270X is a better choice, by a large margin. (explain)

Radeon R9 270X		32000 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 25800 (416%)

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 calculated by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster 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 number of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated 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 output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.