GeForce 8800 GTX vs GeForce 940M

Intro

Compare all that to the GeForce 940M, which has GPU clock speed of 1072 MHz, and 2048 MB of DDR3 RAM running at 1000 MHz through a 64-bit bus. It also features 384 SPUs, 24 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce 8800 GTX should be quite a bit faster than the GeForce 940M overall. (explain)

GeForce 8800 GTX		86400 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 70400 (440%)

Texel Rate

The GeForce 8800 GTX will be quite a bit (approximately 43%) better at anisotropic filtering than the GeForce 940M. (explain)

GeForce 8800 GTX		36800 Mtexels/sec
GeForce 940M		25728 Mtexels/sec
	Difference: 11072 (43%)

Pixel Rate

The GeForce 8800 GTX should be a lot (about 61%) better at FSAA than the GeForce 940M, and also should be able to handle higher resolutions without losing too much performance. (explain)

GeForce 8800 GTX		13800 Mpixels/sec
GeForce 940M		8576 Mpixels/sec
	Difference: 5224 (61%)

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 (measured in megabytes per second) that can be moved past the external memory interface in one second. It's calculated by multiplying the card's interface 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 better the bandwidth is, the better 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 figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card 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 Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.