GeForce 820M vs GeForce GTX 950

Intro

Compare those specifications to the GeForce GTX 950, which makes use of a 28 nm design. nVidia has clocked the core frequency at 1024 MHz. The GDDR5 memory is set to run at a frequency of 1652 MHz on this model. It features 768 SPUs as well as 48 TAUs and 32 Rasterization Operator Units.

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 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 theoretically be quite a bit superior to 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 a lot (more or less 327%) better at texture filtering than the GeForce 820M. (explain)

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

Pixel Rate

The GeForce GTX 950 should be quite a bit (about 1039%) faster with regards to FSAA than the GeForce 820M, and will be able to handle higher screen resolutions better. (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: Memory bandwidth is the largest amount of information (measured in MB per second) that can be transported past the external memory interface in a second. The number is worked out by multiplying the interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 per second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher this number, the better the graphics 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 most pixels the graphics card could 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 colour ROPs by the the card's 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 rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.