Radeon HD 5850 vs Radeon R7 M265

Intro

Compare those specifications to the Radeon R7 M265, which has a core clock frequency of 725 MHz and a DDR3 memory speed of 1000 MHz. It also features a 128-bit bus, and makes use of a 28 nm design. It is made up of 384 SPUs, 24 Texture Address Units, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 5850 should be 300% faster than the Radeon R7 M265 in general, due to its greater data rate. (explain)

Radeon HD 5850		128000 MB/sec
Radeon R7 M265		32000 MB/sec
	Difference: 96000 (300%)

Texel Rate

The Radeon HD 5850 should be quite a bit (more or less 200%) more effective at anisotropic filtering than the Radeon R7 M265. (explain)

Radeon HD 5850		52200 Mtexels/sec
Radeon R7 M265		17400 Mtexels/sec
	Difference: 34800 (200%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 5850 is superior to the Radeon R7 M265, by a large margin. (explain)

Radeon HD 5850		23200 Mpixels/sec
Radeon R7 M265		5800 Mpixels/sec
	Difference: 17400 (300%)

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 maximum amount of data (counted in MB per second) that can be transported across the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.