GeForce 8800 GTS (G80) 640MB vs GeForce 940M

Intro

Compare all of that to the GeForce 940M, which makes use of a 28 nm design. nVidia has set the core speed at 1072 MHz. The DDR3 RAM works at a speed of 1000 MHz on this particular card. It features 384 SPUs as well as 24 TAUs and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the GeForce 8800 GTS (G80) 640MB should perform much faster than the GeForce 940M overall. (explain)

GeForce 8800 GTS (G80) 640MB		63360 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 47360 (296%)

Texel Rate

The GeForce 940M should be just a bit (about 4%) faster with regards to texture filtering than the GeForce 8800 GTS (G80) 640MB. (explain)

GeForce 940M		25728 Mtexels/sec
GeForce 8800 GTS (G80) 640MB		24624 Mtexels/sec
	Difference: 1104 (4%)

Pixel Rate

The GeForce 8800 GTS (G80) 640MB should be a small bit (about 20%) faster with regards to FSAA than the GeForce 940M, and also capable of handling higher screen resolutions while still performing well. (explain)

GeForce 8800 GTS (G80) 640MB		10260 Mpixels/sec
GeForce 940M		8576 Mpixels/sec
	Difference: 1684 (20%)

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 maximum amount of information (measured in megabytes per second) that can be transported across the external memory interface in a second. The number is calculated by multiplying the interface width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 processed per second. This is calculated 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 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 maximum amount of pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.