GeForce GTX 980M vs Radeon HD 5450

Intro

Compare those specifications to the Radeon HD 5450, which has GPU core speed of 650 MHz, and 512 MB of DDR3 RAM set to run at 800 MHz through a 64-bit bus. It also is comprised of 80(16x5) SPUs, 8 TAUs, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
GeForce GTX 980M		100 Watts
	Difference: 81 Watts (426%)

Memory Bandwidth

Theoretically, the GeForce GTX 980M should be much faster than the Radeon HD 5450 in general. (explain)

GeForce GTX 980M		128000 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 115200 (900%)

Texel Rate

The GeForce GTX 980M should be much (approximately 1816%) faster with regards to anisotropic filtering than the Radeon HD 5450. (explain)

GeForce GTX 980M		99648 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 94448 (1816%)

Pixel Rate

The GeForce GTX 980M is quite a bit (more or less 2455%) better at full screen anti-aliasing than the Radeon HD 5450, and capable of handling higher resolutions more effectively. (explain)

GeForce GTX 980M		66432 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 63832 (2455%)

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 information (counted in MB per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total amount 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 applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs 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 also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.