GeForce 8800 GS vs GeForce GTS 150

Intro

Compare that to the GeForce GTS 150, which comes with a GPU core clock 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 Stream Processors, 64 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GS		105 Watts
GeForce GTS 150		141 Watts
	Difference: 36 Watts (34%)

Memory Bandwidth

In theory, the GeForce 8800 GS should be a bit faster than the GeForce GTS 150 overall. (explain)

GeForce 8800 GS		38400 MB/sec
GeForce GTS 150		32000 MB/sec
	Difference: 6400 (20%)

Texel Rate

The GeForce GTS 150 should be a lot (more or less 79%) more effective at texture filtering than the GeForce 8800 GS. (explain)

GeForce GTS 150		47360 Mtexels/sec
GeForce 8800 GS		26400 Mtexels/sec
	Difference: 20960 (79%)

Pixel Rate

The GeForce GTS 150 is much (approximately 79%) better at anti-aliasing than the GeForce 8800 GS, and also capable of handling higher resolutions while still performing well. (explain)

GeForce GTS 150		11840 Mpixels/sec
GeForce 8800 GS		6600 Mpixels/sec
	Difference: 5240 (79%)

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 maximum amount of information (in units of MB per second) that can be transported past the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.