GeForce 820M vs GeForce GTX 750

Intro

Compare all that to the GeForce GTX 750, which comes with core speeds of 1020 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 memory. It features 512 SPUs along with 32 TAUs and 16 Rasterization Operator Units.

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 750		3958 points
GeForce 820M		850 points
	Difference: 3108 (366%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 820M		15 Watts
GeForce GTX 750		55 Watts
	Difference: 40 Watts (267%)

Memory Bandwidth

In theory, the GeForce GTX 750 should perform a lot faster than the GeForce 820M in general. (explain)

GeForce GTX 750		80000 MB/sec
GeForce 820M		16000 MB/sec
	Difference: 64000 (400%)

Texel Rate

The GeForce GTX 750 should be much (approximately 184%) faster with regards to texture filtering than the GeForce 820M. (explain)

GeForce GTX 750		32640 Mtexels/sec
GeForce 820M		11504 Mtexels/sec
	Difference: 21136 (184%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 750 is a better choice, by far. (explain)

GeForce GTX 750		16320 Mpixels/sec
GeForce 820M		2876 Mpixels/sec
	Difference: 13444 (467%)

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 megabytes per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, 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 figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.