GeForce 820M vs Radeon HD 5750 1GB

Intro

Compare all of that to the Radeon HD 5750 1GB, which comes with core speeds of 700 MHz on the GPU, and 1150 MHz on the 1024 MB of GDDR5 memory. It features 720(144x5) SPUs along with 36 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 820M		15 Watts
Radeon HD 5750 1GB		86 Watts
	Difference: 71 Watts (473%)

Memory Bandwidth

In theory, the Radeon HD 5750 1GB should perform much faster than the GeForce 820M in general. (explain)

Radeon HD 5750 1GB		73600 MB/sec
GeForce 820M		16000 MB/sec
	Difference: 57600 (360%)

Texel Rate

The Radeon HD 5750 1GB is a lot (about 119%) better at texture filtering than the GeForce 820M. (explain)

Radeon HD 5750 1GB		25200 Mtexels/sec
GeForce 820M		11504 Mtexels/sec
	Difference: 13696 (119%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 5750 1GB is a better choice, by far. (explain)

Radeon HD 5750 1GB		11200 Mpixels/sec
GeForce 820M		2876 Mpixels/sec
	Difference: 8324 (289%)

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 (measured in MB per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 again. If it uses 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, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at 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 chip can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.