GeForce 820M vs GeForce GT 210

Intro

Compare all that to the GeForce GT 210, which has GPU core speed of 589 MHz, and 512 MB of DDR3 memory set to run at 800 MHz through a 64-bit bus. It also is comprised of 16 Stream Processors, 8 TAUs, and 4 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 820M		15 Watts
GeForce GT 210		31 Watts
	Difference: 16 Watts (107%)

Memory Bandwidth

In theory, the GeForce 820M should be a lot faster than the GeForce GT 210 in general. (explain)

GeForce 820M		16000 MB/sec
GeForce GT 210		12800 MB/sec
	Difference: 3200 (25%)

Texel Rate

The GeForce 820M is much (more or less 144%) more effective at AF than the GeForce GT 210. (explain)

GeForce 820M		11504 Mtexels/sec
GeForce GT 210		4712 Mtexels/sec
	Difference: 6792 (144%)

Pixel Rate

The GeForce 820M is quite a bit (approximately 22%) better at FSAA than the GeForce GT 210, and also will be capable of handling higher resolutions better. (explain)

GeForce 820M		2876 Mpixels/sec
GeForce GT 210		2356 Mpixels/sec
	Difference: 520 (22%)

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: Memory bandwidth is the largest amount of information (measured in MB per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the bus width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total amount of 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 applied per second.

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