GeForce GT 220 GDDR3 vs GeForce GTS 150

Intro

Compare those specifications to the GeForce GTS 150, which has a core clock frequency of 740 MHz and a GDDR3 memory frequency of 500 MHz. It also uses a 256-bit memory bus, and makes use of a 55 nm design. It is comprised of 128 SPUs, 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 speaking, the GeForce GT 220 GDDR3 will be 1% quicker than the GeForce GTS 150 in general, due to its higher bandwidth. (explain)

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

Texel Rate

The GeForce GTS 150 should be quite a bit (about 374%) more effective at texture 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

The GeForce GTS 150 will be much (about 137%) faster with regards to AA than the GeForce GT 220 GDDR3, and also should be able to handle higher resolutions more effectively. (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: Bandwidth is the largest amount of data (measured in megabytes per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed 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 the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.