GeForce GTX 850M vs Radeon HD 3650 512MB

Intro

Compare those specifications to the Radeon HD 3650 512MB, which comes with GPU core speed of 725 MHz, and 512 MB of GDDR3 memory running at 800 MHz through a 128-bit bus. It also is made up of 120(24x5) SPUs, 8 TAUs, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
Radeon HD 3650 512MB		78 Watts
	Difference: 38 Watts (95%)

Memory Bandwidth

In theory, the GeForce GTX 850M should perform much faster than the Radeon HD 3650 512MB in general. (explain)

GeForce GTX 850M		32000 MB/sec
Radeon HD 3650 512MB		25600 MB/sec
	Difference: 6400 (25%)

Texel Rate

The GeForce GTX 850M will be a lot (more or less 504%) faster with regards to texture filtering than the Radeon HD 3650 512MB. (explain)

GeForce GTX 850M		35040 Mtexels/sec
Radeon HD 3650 512MB		5800 Mtexels/sec
	Difference: 29240 (504%)

Pixel Rate

The GeForce GTX 850M will be quite a bit (approximately 383%) better at anti-aliasing than the Radeon HD 3650 512MB, and also will be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 850M		14016 Mpixels/sec
Radeon HD 3650 512MB		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 max amount of data (measured in megabytes per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the bus width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's 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 processed per second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, 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 the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.