GeForce 8800 GTS (G92) vs GeForce GTX 650

Intro

Compare that to the GeForce GTX 650, which uses a 28 nm design. nVidia has set the core speed at 1058 MHz. The GDDR5 RAM works at a frequency of 1250 MHz on this card. It features 384 SPUs along with 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
GeForce 8800 GTS (G92)		135 Watts
	Difference: 71 Watts (111%)

Memory Bandwidth

The GeForce GTX 650 should theoretically perform quite a bit faster than the GeForce 8800 GTS (G92) in general. (explain)

GeForce GTX 650		80000 MB/sec
GeForce 8800 GTS (G92)		62080 MB/sec
	Difference: 17920 (29%)

Texel Rate

The GeForce 8800 GTS (G92) is much (more or less 23%) faster with regards to anisotropic filtering than the GeForce GTX 650. (explain)

GeForce 8800 GTS (G92)		41600 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 7744 (23%)

Pixel Rate

The GeForce GTX 650 is much (approximately 63%) more effective at full screen anti-aliasing than the GeForce 8800 GTS (G92), and also capable of handling higher resolutions more effectively. (explain)

GeForce GTX 650		16928 Mpixels/sec
GeForce 8800 GTS (G92)		10400 Mpixels/sec
	Difference: 6528 (63%)

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 (counted in MB per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 can be processed in one second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called 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, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.