GeForce 820M vs GeForce GT 210

Intro

Compare all of that to the GeForce GT 210, which features a core clock speed of 589 MHz and a DDR3 memory speed of 800 MHz. It also makes use of a 64-bit memory bus, and uses a 40 nm design. It is comprised of 16 SPUs, 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

Performance-wise, the GeForce 820M should theoretically be quite a bit superior to the GeForce GT 210 overall. (explain)

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

Texel Rate

The GeForce 820M will be much (more or less 144%) faster with regards to texture filtering 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%) more effective at full screen anti-aliasing than the GeForce GT 210, and should be capable of handling higher screen resolutions while still performing well. (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 data (in units of MB per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher 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 amount of texture map elements (texels) that can be applied in one second. This figure is calculated 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.