GeForce 820M vs GeForce GTX 960

Intro

Compare all that to the GeForce GTX 960, which features clock speeds of 1127 MHz on the GPU, and 1750 MHz on the 2048 MB of GDDR5 RAM. It features 1024 SPUs along with 64 TAUs 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 960		7627 points
GeForce 820M		850 points
	Difference: 6777 (797%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 820M		15 Watts
GeForce GTX 960		120 Watts
	Difference: 105 Watts (700%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 960 should perform quite a bit faster than the GeForce 820M overall. (explain)

GeForce GTX 960		112000 MB/sec
GeForce 820M		16000 MB/sec
	Difference: 96000 (600%)

Texel Rate

The GeForce GTX 960 should be a lot (about 527%) more effective at anisotropic filtering than the GeForce 820M. (explain)

GeForce GTX 960		72128 Mtexels/sec
GeForce 820M		11504 Mtexels/sec
	Difference: 60624 (527%)

Pixel Rate

The GeForce GTX 960 should be a lot (about 1154%) more effective at anti-aliasing than the GeForce 820M, and will be able to handle higher screen resolutions better. (explain)

GeForce GTX 960		36064 Mpixels/sec
GeForce 820M		2876 Mpixels/sec
	Difference: 33188 (1154%)

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 (counted in MB per second) that can be moved past the external memory interface in one second. It's calculated by multiplying the interface width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total number of texture units of the card 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 per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs 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 - the lower the bandwidth is, the lower the potential to reach the max fill rate.