GeForce GTX 860M vs Radeon HD 5850

Intro

Compare those specs to the Radeon HD 5850, which features core speeds of 725 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 RAM. It features 1440(288x5) SPUs along with 72 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M		45 Watts
Radeon HD 5850		151 Watts
	Difference: 106 Watts (236%)

Memory Bandwidth

Theoretically, the Radeon HD 5850 should be a lot faster than the GeForce GTX 860M in general. (explain)

Radeon HD 5850		128000 MB/sec
GeForce GTX 860M		64000 MB/sec
	Difference: 64000 (100%)

Texel Rate

The GeForce GTX 860M is much (approximately 47%) better at AF than the Radeon HD 5850. (explain)

GeForce GTX 860M		76512 Mtexels/sec
Radeon HD 5850		52200 Mtexels/sec
	Difference: 24312 (47%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 5850 is superior to the GeForce GTX 860M, by far. (explain)

Radeon HD 5850		23200 Mpixels/sec
GeForce GTX 860M		12752 Mpixels/sec
	Difference: 10448 (82%)

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: Memory bandwidth is the max amount of data (measured in MB per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better 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 the video card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated 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 drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.