GeForce 940M vs Radeon HD 5450

Intro

Compare those specifications to the Radeon HD 5450, which has a clock frequency of 650 MHz and a DDR3 memory speed of 800 MHz. It also makes use of a 64-bit bus, and uses a 40 nm design. It features 80(16x5) SPUs, 8 TAUs, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the GeForce 940M should in theory be much better than the Radeon HD 5450 in general. (explain)

GeForce 940M		16000 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 3200 (25%)

Texel Rate

The GeForce 940M is quite a bit (about 395%) faster with regards to texture filtering than the Radeon HD 5450. (explain)

GeForce 940M		25728 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 20528 (395%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce 940M is a better choice, by far. (explain)

GeForce 940M		8576 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 5976 (230%)

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 over the external memory interface within a second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR memory, it should be multiplied by 2 again. If 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, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount 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 fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.