GeForce GTX 260 Core 216 vs GeForce GTX 850M

Intro

Compare those specs to the GeForce GTX 850M, which features core speeds of 876 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 memory. It features 640 SPUs along with 40 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
GeForce GTX 260 Core 216		202 Watts
	Difference: 162 Watts (405%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 260 Core 216 is 250% faster than the GeForce GTX 850M overall, because of its higher data rate. (explain)

GeForce GTX 260 Core 216		111888 MB/sec
GeForce GTX 850M		32000 MB/sec
	Difference: 79888 (250%)

Texel Rate

The GeForce GTX 260 Core 216 will be a bit (approximately 18%) faster with regards to texture filtering than the GeForce GTX 850M. (explain)

GeForce GTX 260 Core 216		41472 Mtexels/sec
GeForce GTX 850M		35040 Mtexels/sec
	Difference: 6432 (18%)

Pixel Rate

The GeForce GTX 260 Core 216 is a small bit (about 15%) faster with regards to FSAA than the GeForce GTX 850M, and should be capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 260 Core 216		16128 Mpixels/sec
GeForce GTX 850M		14016 Mpixels/sec
	Difference: 2112 (15%)

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 max amount of information (counted in MB per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 once 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, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per 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 calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.