Radeon HD 5830 vs Radeon R9 M265X

Intro

Compare those specs to the Radeon R9 M265X, which makes use of a 28 nm design. AMD has clocked the core frequency at 575 MHz. The GDDR5 memory is set to run at a frequency of 1125 MHz on this particular model. It features 640 SPUs as well as 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 5830 should theoretically perform a lot faster than the Radeon R9 M265X overall. (explain)

Radeon HD 5830		128000 MB/sec
Radeon R9 M265X		72000 MB/sec
	Difference: 56000 (78%)

Texel Rate

The Radeon HD 5830 will be a lot (approximately 95%) faster with regards to AF than the Radeon R9 M265X. (explain)

Radeon HD 5830		44800 Mtexels/sec
Radeon R9 M265X		23000 Mtexels/sec
	Difference: 21800 (95%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 5830 is the winner, and very much so. (explain)

Radeon HD 5830		12800 Mpixels/sec
Radeon R9 M265X		9200 Mpixels/sec
	Difference: 3600 (39%)

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 (measured in MB per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a 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 worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.