GeForce 8800 GS vs GeForce GTS 150

Intro

Compare all of that to the GeForce GTS 150, which features a core clock frequency of 740 MHz and a GDDR3 memory speed of 500 MHz. It also makes use of a 256-bit memory bus, and makes use of a 55 nm design. It features 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 8800 GS		105 Watts
GeForce GTS 150		141 Watts
	Difference: 36 Watts (34%)

Memory Bandwidth

The GeForce 8800 GS should in theory be a small bit faster than the GeForce GTS 150 in general. (explain)

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

Texel Rate

The GeForce GTS 150 should be much (more or less 79%) faster with regards to anisotropic filtering than the GeForce 8800 GS. (explain)

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

Pixel Rate

If using a high resolution is important to you, then the GeForce GTS 150 is the winner, by a large margin. (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 (measured in MB per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total texture units of the card by the core clock 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.