GeForce 820M vs GeForce GTX 950

Intro

Compare that to the GeForce GTX 950, which features a clock speed of 1024 MHz and a GDDR5 memory speed of 1652 MHz. It also uses a 128-bit bus, and uses a 28 nm design. It features 768 SPUs, 48 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

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 950		6536 points
GeForce 820M		850 points
	Difference: 5686 (669%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 820M		15 Watts
GeForce GTX 950		90 Watts
	Difference: 75 Watts (500%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 950 should in theory be much better than the GeForce 820M overall. (explain)

GeForce GTX 950		105728 MB/sec
GeForce 820M		16000 MB/sec
	Difference: 89728 (561%)

Texel Rate

The GeForce GTX 950 should be quite a bit (more or less 327%) faster with regards to texture filtering than the GeForce 820M. (explain)

GeForce GTX 950		49152 Mtexels/sec
GeForce 820M		11504 Mtexels/sec
	Difference: 37648 (327%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 950 is the winner, and very much so. (explain)

GeForce GTX 950		32768 Mpixels/sec
GeForce 820M		2876 Mpixels/sec
	Difference: 29892 (1039%)

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 transferred across the external memory interface in one second. The number is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.