GeForce GTX 460 vs GeForce GTX 850M

Intro

Compare those specifications to the GeForce GTX 850M, which makes use of a 28 nm design. nVidia has set the core speed at 876 MHz. The DDR3 RAM is set to run at a speed of 1000 MHz on this specific model. It features 640 SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 850M		3340 points
GeForce GTX 460		2557 points
	Difference: 783 (31%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
GeForce GTX 460		150 Watts
	Difference: 110 Watts (275%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 460 should in theory be a lot better than the GeForce GTX 850M overall. (explain)

GeForce GTX 460		86400 MB/sec
GeForce GTX 850M		32000 MB/sec
	Difference: 54400 (170%)

Texel Rate

The GeForce GTX 460 is a little bit (approximately 8%) faster with regards to texture filtering than the GeForce GTX 850M. (explain)

GeForce GTX 460		37800 Mtexels/sec
GeForce GTX 850M		35040 Mtexels/sec
	Difference: 2760 (8%)

Pixel Rate

The GeForce GTX 460 should be a bit (about 16%) faster with regards to FSAA than the GeForce GTX 850M, and will be capable of handling higher resolutions more effectively. (explain)

GeForce GTX 460		16200 Mpixels/sec
GeForce GTX 850M		14016 Mpixels/sec
	Difference: 2184 (16%)

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 megabytes per second) that can be transferred past the external memory interface in one second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one 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 worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.