GeForce GTX 950M vs Radeon HD 3650 256MB

Intro

Compare that to the Radeon HD 3650 256MB, which has GPU clock speed of 725 MHz, and 256 MB of DDR2 RAM running at 800 MHz through a 128-bit bus. It also is comprised of 120(24x5) SPUs, 8 Texture Address Units, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950M		55 Watts
Radeon HD 3650 256MB		78 Watts
	Difference: 23 Watts (42%)

Memory Bandwidth

The GeForce GTX 950M, in theory, should perform a lot faster than the Radeon HD 3650 256MB in general. (explain)

GeForce GTX 950M		32000 MB/sec
Radeon HD 3650 256MB		25600 MB/sec
	Difference: 6400 (25%)

Texel Rate

The GeForce GTX 950M is quite a bit (approximately 530%) more effective at texture filtering than the Radeon HD 3650 256MB. (explain)

GeForce GTX 950M		36560 Mtexels/sec
Radeon HD 3650 256MB		5800 Mtexels/sec
	Difference: 30760 (530%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 950M is the winner, by far. (explain)

GeForce GTX 950M		14624 Mpixels/sec
Radeon HD 3650 256MB		2900 Mpixels/sec
	Difference: 11724 (404%)

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 information (in units of megabytes per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the bus width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This figure 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 card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.