GeForce GTX 850M vs Radeon HD 3650

Intro

Compare those specifications to the Radeon HD 3650, which features GPU core speed of 725 MHz, and 1024 MB of GDDR4 RAM running at 800 MHz through a 128-bit bus. It also is made up of 120(24x5) SPUs, 8 TAUs, and 4 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
Radeon HD 3650		78 Watts
	Difference: 38 Watts (95%)

Memory Bandwidth

The GeForce GTX 850M, in theory, should perform a lot faster than the Radeon HD 3650 overall. (explain)

GeForce GTX 850M		32000 MB/sec
Radeon HD 3650		25600 MB/sec
	Difference: 6400 (25%)

Texel Rate

The GeForce GTX 850M will be a lot (about 504%) more effective at anisotropic filtering than the Radeon HD 3650. (explain)

GeForce GTX 850M		35040 Mtexels/sec
Radeon HD 3650		5800 Mtexels/sec
	Difference: 29240 (504%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 850M is the winner, by a large margin. (explain)

GeForce GTX 850M		14016 Mpixels/sec
Radeon HD 3650		2900 Mpixels/sec
	Difference: 11116 (383%)

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 (measured in megabytes per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This figure is calculated 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 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 number of pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes 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, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.