GeForce GTX 560 Ti 448 vs GeForce GTX 850M

Intro

Compare that to the GeForce GTX 850M, which has a clock speed of 876 MHz and a DDR3 memory speed of 1000 MHz. It also features a 128-bit bus, and makes use of a 28 nm design. It features 640 SPUs, 40 TAUs, and 16 Raster Operation 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 560 Ti 448		4200 points
GeForce GTX 850M		3340 points
	Difference: 860 (26%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
GeForce GTX 560 Ti 448		210 Watts
	Difference: 170 Watts (425%)

Memory Bandwidth

The GeForce GTX 560 Ti 448 should in theory perform quite a bit faster than the GeForce GTX 850M in general. (explain)

GeForce GTX 560 Ti 448		144000 MB/sec
GeForce GTX 850M		32000 MB/sec
	Difference: 112000 (350%)

Texel Rate

The GeForce GTX 560 Ti 448 will be a small bit (about 17%) better at anisotropic filtering than the GeForce GTX 850M. (explain)

GeForce GTX 560 Ti 448		40992 Mtexels/sec
GeForce GTX 850M		35040 Mtexels/sec
	Difference: 5952 (17%)

Pixel Rate

The GeForce GTX 560 Ti 448 is quite a bit (more or less 109%) faster with regards to anti-aliasing than the GeForce GTX 850M, and capable of handling higher resolutions better. (explain)

GeForce GTX 560 Ti 448		29280 Mpixels/sec
GeForce GTX 850M		14016 Mpixels/sec
	Difference: 15264 (109%)

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 data (counted in megabytes per second) that can be moved past the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This is worked out by multiplying the total number of texture units by the core clock 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 processed in a second.

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