Radeon HD 5450 vs Radeon R7 M265

Intro

Compare those specifications to the Radeon R7 M265, which comes with a core clock frequency of 725 MHz and a DDR3 memory frequency of 1000 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It features 384 SPUs, 24 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R7 M265 should in theory be quite a bit faster than the Radeon HD 5450 overall. (explain)

Radeon R7 M265		32000 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 19200 (150%)

Texel Rate

The Radeon R7 M265 is a lot (approximately 235%) more effective at texture filtering than the Radeon HD 5450. (explain)

Radeon R7 M265		17400 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 12200 (235%)

Pixel Rate

The Radeon R7 M265 is quite a bit (approximately 123%) more effective at AA than the Radeon HD 5450, and also will be able to handle higher resolutions without losing too much performance. (explain)

Radeon R7 M265		5800 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 3200 (123%)

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 (counted in megabytes per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory 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 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 texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number of 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 per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). 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 potential to get to the max fill rate.