GeForce GT 220 GDDR3 vs GeForce GTS 150

Intro

Compare those specs to the GeForce GTS 150, which makes use of a 55 nm design. nVidia has set the core frequency at 740 MHz. The GDDR3 RAM works at a speed of 500 MHz on this specific model. It features 128 SPUs along with 64 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 220 GDDR3		58 Watts
GeForce GTS 150		141 Watts
	Difference: 83 Watts (143%)

Memory Bandwidth

Theoretically, the GeForce GT 220 GDDR3 should be a small bit faster than the GeForce GTS 150 overall. (explain)

GeForce GT 220 GDDR3		32384 MB/sec
GeForce GTS 150		32000 MB/sec
	Difference: 384 (1%)

Texel Rate

The GeForce GTS 150 will be much (about 374%) faster with regards to anisotropic filtering than the GeForce GT 220 GDDR3. (explain)

GeForce GTS 150		47360 Mtexels/sec
GeForce GT 220 GDDR3		10000 Mtexels/sec
	Difference: 37360 (374%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTS 150 is superior to the GeForce GT 220 GDDR3, by a large margin. (explain)

GeForce GTS 150		11840 Mpixels/sec
GeForce GT 220 GDDR3		5000 Mpixels/sec
	Difference: 6840 (137%)

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 transferred past the external memory interface in a second. It's worked out by multiplying the bus width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This number is worked out 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 card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.