Radeon HD 3650 vs Radeon R7 M265

Intro

Compare all of that to the Radeon R7 M265, which features a clock speed of 725 MHz and a DDR3 memory frequency of 1000 MHz. It also uses a 128-bit bus, and uses a 28 nm design. It is comprised of 384 SPUs, 24 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon R7 M265 should theoretically be much better than the Radeon HD 3650 overall. (explain)

Radeon R7 M265		32000 MB/sec
Radeon HD 3650		25600 MB/sec
	Difference: 6400 (25%)

Texel Rate

The Radeon R7 M265 will be a lot (more or less 200%) better at texture filtering than the Radeon HD 3650. (explain)

Radeon R7 M265		17400 Mtexels/sec
Radeon HD 3650		5800 Mtexels/sec
	Difference: 11600 (200%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R7 M265 is the winner, by a large margin. (explain)

Radeon R7 M265		5800 Mpixels/sec
Radeon HD 3650		2900 Mpixels/sec
	Difference: 2900 (100%)

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 max amount of data (counted in MB per second) that can be moved over the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the video 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 maximum amount of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The number 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 outputting the pixels (image) to the screen. The actual pixel output rate is also dependant 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.