GeForce 820M vs GeForce GTX 550 Ti

Intro

Compare those specs to the GeForce GTX 550 Ti, which has a core clock frequency of 900 MHz and a GDDR5 memory frequency of 1026 MHz. It also features a 192-bit bus, and uses a 40 nm design. It features 192 SPUs, 32 Texture Address Units, and 24 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 550 Ti		1897 points
GeForce 820M		850 points
	Difference: 1047 (123%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 820M		15 Watts
GeForce GTX 550 Ti		116 Watts
	Difference: 101 Watts (673%)

Memory Bandwidth

In theory, the GeForce GTX 550 Ti should be 516% faster than the GeForce 820M in general, because of its greater bandwidth. (explain)

GeForce GTX 550 Ti		98496 MB/sec
GeForce 820M		16000 MB/sec
	Difference: 82496 (516%)

Texel Rate

The GeForce GTX 550 Ti should be much (about 150%) better at texture filtering than the GeForce 820M. (explain)

GeForce GTX 550 Ti		28800 Mtexels/sec
GeForce 820M		11504 Mtexels/sec
	Difference: 17296 (150%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 550 Ti is the winner, by a large margin. (explain)

GeForce GTX 550 Ti		21600 Mpixels/sec
GeForce 820M		2876 Mpixels/sec
	Difference: 18724 (651%)

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 data (measured in megabytes per second) that can be transported across the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total texture units by the core clock 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 a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core 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 is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.