Radeon HD 5670 vs Radeon R9 M290X

Intro

Compare all that to the Radeon R9 M290X, which features a clock speed of 850 MHz and a GDDR5 memory frequency of 1200 MHz. It also makes use of a 256-bit memory bus, and makes use of a 28 nm design. It is made up of 1280 SPUs, 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 M290X		100 Watts
	Difference: 39 Watts (64%)

Memory Bandwidth

In theory, the Radeon R9 M290X should be a lot faster than the Radeon HD 5670 in general. (explain)

Radeon R9 M290X		153600 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 89600 (140%)

Texel Rate

The Radeon R9 M290X will be much (more or less 339%) faster with regards to AF than the Radeon HD 5670. (explain)

Radeon R9 M290X		68000 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 52500 (339%)

Pixel Rate

The Radeon R9 M290X is a lot (about 339%) more effective at full screen anti-aliasing than the Radeon HD 5670, and should be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon R9 M290X		27200 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 21000 (339%)

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 MB per second) that can be transported over the external memory interface in a second. It's calculated by multiplying the interface width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher 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 number of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.