GeForce 8800 GTS (G92) vs GeForce GTX 650

Intro

Compare all of that to the GeForce GTX 650, which has a clock speed of 1058 MHz and a GDDR5 memory frequency of 1250 MHz. It also features a 128-bit bus, and uses a 28 nm design. It is comprised of 384 SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

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

Theoretically speaking, the GeForce GTX 650 should perform much faster than the GeForce 8800 GTS (G92) overall. (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 a lot (about 23%) more effective at 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 quite a bit (more or less 63%) faster with regards to full screen anti-aliasing than the GeForce 8800 GTS (G92), and also able to handle higher resolutions while still performing well. (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 information (in units of MB per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied 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 processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the card's 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 is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.