GeForce 840M vs GeForce GT 210

Intro

Compare all of that to the GeForce GT 210, which features a clock frequency of 589 MHz and a DDR3 memory speed of 800 MHz. It also features a 64-bit bus, and makes use of a 40 nm design. It features 16 SPUs, 8 Texture Address Units, and 4 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 840M		30 Watts
GeForce GT 210		31 Watts
	Difference: 1 Watts (3%)

Memory Bandwidth

In theory, the GeForce 840M should be 25% quicker than the GeForce GT 210 in general, due to its higher bandwidth. (explain)

GeForce 840M		16000 MB/sec
GeForce GT 210		12800 MB/sec
	Difference: 3200 (25%)

Texel Rate

The GeForce 840M will be quite a bit (more or less 424%) more effective at AF than the GeForce GT 210. (explain)

GeForce 840M		24696 Mtexels/sec
GeForce GT 210		4712 Mtexels/sec
	Difference: 19984 (424%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce 840M is superior to the GeForce GT 210, by far. (explain)

GeForce 840M		8232 Mpixels/sec
GeForce GT 210		2356 Mpixels/sec
	Difference: 5876 (249%)

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 information (measured in megabytes per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total amount of texture units by the core 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 processed in a second.

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