Radeon HD 5830 vs Radeon R9 M265X

Intro

Compare those specs to the Radeon R9 M265X, which uses a 28 nm design. AMD has clocked the core frequency at 575 MHz. The GDDR5 RAM works at a speed of 1125 MHz on this specific model. It features 640 SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 5830 should theoretically perform quite a bit faster than the Radeon R9 M265X in general. (explain)

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

Texel Rate

The Radeon HD 5830 should be a lot (more or less 95%) more effective at 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 using high levels of AA is important to you, then the Radeon HD 5830 is superior to the Radeon R9 M265X, by a large margin. (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: Memory bandwidth is the largest amount of information (counted in MB per second) that can be moved past the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total amount of texture units by the core clock 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.