GeForce 8800 Ultra vs GeForce GTX 850M

Intro

Compare that to the GeForce GTX 850M, which uses a 28 nm design. nVidia has clocked the core frequency at 876 MHz. The DDR3 memory works at a speed of 1000 MHz on this model. It features 640 SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
GeForce 8800 Ultra		171 Watts
	Difference: 131 Watts (328%)

Memory Bandwidth

In theory, the GeForce 8800 Ultra will be 224% faster than the GeForce GTX 850M overall, due to its higher data rate. (explain)

GeForce 8800 Ultra		103680 MB/sec
GeForce GTX 850M		32000 MB/sec
	Difference: 71680 (224%)

Texel Rate

The GeForce 8800 Ultra is a little bit (about 12%) more effective at AF than the GeForce GTX 850M. (explain)

GeForce 8800 Ultra		39168 Mtexels/sec
GeForce GTX 850M		35040 Mtexels/sec
	Difference: 4128 (12%)

Pixel Rate

If using a high resolution is important to you, then the GeForce 8800 Ultra is the winner, but it probably won't make a huge difference. (explain)

GeForce 8800 Ultra		14688 Mpixels/sec
GeForce GTX 850M		14016 Mpixels/sec
	Difference: 672 (5%)

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 transported across the external memory interface within a second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record 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 called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.