GeForce 940M vs Radeon HD 3650 256MB

Intro

Compare those specifications to the Radeon HD 3650 256MB, which features a clock speed of 725 MHz and a DDR2 memory frequency of 800 MHz. It also uses a 128-bit memory bus, and makes use of a 55 nm design. It is made up of 120(24x5) SPUs, 8 Texture Address Units, and 4 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 3650 256MB should theoretically perform much faster than the GeForce 940M in general. (explain)

Radeon HD 3650 256MB		25600 MB/sec
GeForce 940M		16000 MB/sec
	Difference: 9600 (60%)

Texel Rate

The GeForce 940M will be quite a bit (more or less 344%) faster with regards to texture filtering than the Radeon HD 3650 256MB. (explain)

GeForce 940M		25728 Mtexels/sec
Radeon HD 3650 256MB		5800 Mtexels/sec
	Difference: 19928 (344%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce 940M is the winner, by a large margin. (explain)

GeForce 940M		8576 Mpixels/sec
Radeon HD 3650 256MB		2900 Mpixels/sec
	Difference: 5676 (196%)

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 largest amount of data (measured in megabytes per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the interface width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 again. If it uses 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.