GeForce 820M vs GeForce GTX 750

Intro

Compare all that to the GeForce GTX 750, which has a GPU core clock speed of 1020 MHz, and 1024 MB of GDDR5 RAM running at 1250 MHz through a 128-bit bus. It also features 512 SPUs, 32 TAUs, and 16 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 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

As far as performance goes, the GeForce GTX 750 should theoretically be a lot superior to 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 will be quite a bit (about 184%) more effective at AF than the GeForce 820M. (explain)

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

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 750 is superior to the GeForce 820M, 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 largest amount of data (measured in megabytes per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the bus width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel 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.