GeForce GTX 970M vs Radeon HD 5450

Intro

Compare those specs to the Radeon HD 5450, which makes use of a 40 nm design. AMD has clocked the core speed at 650 MHz. The DDR3 memory runs at a speed of 800 MHz on this card. It features 80(16x5) SPUs along with 8 TAUs and 4 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
GeForce GTX 970M		75 Watts
	Difference: 56 Watts (295%)

Memory Bandwidth

In theory, the GeForce GTX 970M will be 650% quicker than the Radeon HD 5450 in general, due to its higher bandwidth. (explain)

GeForce GTX 970M		96000 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 83200 (650%)

Texel Rate

The GeForce GTX 970M should be a lot (more or less 1322%) faster with regards to texture filtering than the Radeon HD 5450. (explain)

GeForce GTX 970M		73920 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 68720 (1322%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 970M is superior to the Radeon HD 5450, by a large margin. (explain)

GeForce GTX 970M		44352 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 41752 (1606%)

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 (measured in MB per second) that can be transported across the external memory interface in one second. It's calculated by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.