GeForce 820M vs GeForce GTX 650 Ti

Intro

Compare all that to the GeForce GTX 650 Ti, which uses a 28 nm design. nVidia has set the core frequency at 928 MHz. The GDDR5 RAM works at a frequency of 1350 MHz on this specific card. It features 768 SPUs as well as 64 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 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

The GeForce GTX 650 Ti should theoretically be quite a bit faster than 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%) faster with regards to texture filtering than the GeForce 820M. (explain)

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

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 650 Ti is superior to the GeForce 820M, and very much so. (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 maximum amount of data (counted in megabytes per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the interface width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 are processed in one second. This figure is worked out by multiplying the total number of texture units by the core clock 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 in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.