Radeon HD 5670 vs Radeon R9 270X

Intro

Compare those specifications to the Radeon R9 270X, which makes use of a 28 nm design. AMD has set the core frequency at 1000 MHz. The GDDR5 memory runs at a frequency of 1400 MHz on this card. It features 1280 SPUs along with 80 Texture Address Units and 32 ROPs.

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

Theoretically, the Radeon R9 270X should perform a lot faster than the Radeon HD 5670 overall. (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%) faster with regards to texture filtering 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 a high screen resolution is important to you, then the Radeon R9 270X is a better choice, by far. (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: Bandwidth is the maximum amount of data (in units of megabytes per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the interface width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock 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 rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.