GeForce GT 220 GDDR3 vs GeForce GTS 150

Intro

Compare all that to the GeForce GTS 150, which has GPU core speed of 740 MHz, and 1024 MB of GDDR3 memory running at 500 MHz through a 256-bit bus. It also 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 should be a small bit faster than the GeForce GTS 150 in general. (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 much (about 374%) more effective at AF 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 is much (more or less 137%) more effective at AA than the GeForce GT 220 GDDR3, and will be capable of handling higher screen resolutions without slowing down too much. (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 MB per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 again. If 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The better 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 maximum amount of pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the core 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 also depends 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.