GeForce 820M vs GeForce GTX 750 Ti

Intro

Compare those specs to the GeForce GTX 750 Ti, which features core clock speeds of 1020 MHz on the GPU, and 1350 MHz on the 2048 MB of GDDR5 memory. It features 640 SPUs along with 40 Texture Address Units 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 Ti		4562 points
GeForce 820M		850 points
	Difference: 3712 (437%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 820M		15 Watts
GeForce GTX 750 Ti		60 Watts
	Difference: 45 Watts (300%)

Memory Bandwidth

The GeForce GTX 750 Ti, in theory, should perform much faster than the GeForce 820M in general. (explain)

GeForce GTX 750 Ti		86400 MB/sec
GeForce 820M		16000 MB/sec
	Difference: 70400 (440%)

Texel Rate

The GeForce GTX 750 Ti should be a lot (approximately 255%) better at anisotropic filtering than the GeForce 820M. (explain)

GeForce GTX 750 Ti		40800 Mtexels/sec
GeForce 820M		11504 Mtexels/sec
	Difference: 29296 (255%)

Pixel Rate

The GeForce GTX 750 Ti should be a lot (approximately 467%) more effective at full screen anti-aliasing than the GeForce 820M, and also should be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 750 Ti		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 information (measured in MB per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 number of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total texture units by the core clock 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 one second.

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