GeForce GTX 980M vs Radeon HD 5450

Intro

Compare all of that to the Radeon HD 5450, which comes with a clock frequency of 650 MHz and a DDR3 memory frequency of 800 MHz. It also makes use of a 64-bit bus, and uses a 40 nm design. It is made up of 80(16x5) SPUs, 8 Texture Address Units, and 4 Raster Operation Units.

Display Graphs

Hide Graphs

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 speaking, the GeForce GTX 980M should perform quite a bit faster than the Radeon HD 5450 overall. (explain)

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

Texel Rate

The GeForce GTX 980M is a lot (approximately 1816%) faster with regards to texture 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 will be a lot (about 2455%) faster with regards to FSAA than the Radeon HD 5450, and also able to handle higher screen resolutions without slowing down too much. (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: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be transferred past the external memory interface in a second. It's calculated by multiplying the interface width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher 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 most pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.