GeForce 820M vs GeForce GTX 650 Ti

Intro

Compare that to the GeForce GTX 650 Ti, which has GPU core speed of 928 MHz, and 1024 MB of GDDR5 memory running at 1350 MHz through a 128-bit bus. It also is comprised of 768 SPUs, 64 Texture Address Units, and 16 Raster Operation 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 650 Ti		3434 points
GeForce 820M		850 points
	Difference: 2584 (304%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 820M		15 Watts
GeForce GTX 650 Ti		110 Watts
	Difference: 95 Watts (633%)

Memory Bandwidth

Performance-wise, the GeForce GTX 650 Ti should theoretically be quite a bit superior to the GeForce 820M in general. (explain)

GeForce GTX 650 Ti		86400 MB/sec
GeForce 820M		16000 MB/sec
	Difference: 70400 (440%)

Texel Rate

The GeForce GTX 650 Ti will be quite a bit (more or less 416%) better at texture filtering than the GeForce 820M. (explain)

GeForce GTX 650 Ti		59392 Mtexels/sec
GeForce 820M		11504 Mtexels/sec
	Difference: 47888 (416%)

Pixel Rate

The GeForce GTX 650 Ti is a lot (more or less 416%) faster with regards to full screen anti-aliasing than the GeForce 820M, and capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 650 Ti		14848 Mpixels/sec
GeForce 820M		2876 Mpixels/sec
	Difference: 11972 (416%)

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 (counted in megabytes per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. 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 number of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.