GeForce GT 210 vs GeForce GT 420

Intro

Compare those specifications to the GeForce GT 420, which comes with a core clock speed of 700 MHz and a GDDR3 memory frequency of 900 MHz. It also uses a 128-bit memory bus, and uses a 40 nm design. It features 48 SPUs, 8 Texture Address Units, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 210		31 Watts
GeForce GT 420		50 Watts
	Difference: 19 Watts (61%)

Memory Bandwidth

The GeForce GT 420, in theory, should be a lot faster than the GeForce GT 210 in general. (explain)

GeForce GT 420		28800 MB/sec
GeForce GT 210		12800 MB/sec
	Difference: 16000 (125%)

Texel Rate

The GeForce GT 420 will be a small bit (approximately 19%) more effective at anisotropic filtering than the GeForce GT 210. (explain)

GeForce GT 420		5600 Mtexels/sec
GeForce GT 210		4712 Mtexels/sec
	Difference: 888 (19%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GT 420 is superior to the GeForce GT 210, but not by far. (explain)

GeForce GT 420		2800 Mpixels/sec
GeForce GT 210		2356 Mpixels/sec
	Difference: 444 (19%)

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 information (in units of 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 the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster 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 texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

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