GeForce GTX 950M vs Radeon HD 3650 256MB

Intro

Compare all of that to the Radeon HD 3650 256MB, which features core clock speeds of 725 MHz on the GPU, and 800 MHz on the 256 MB of DDR2 RAM. It features 120(24x5) SPUs as well as 8 Texture Address Units and 4 Rasterization Operator Units.

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

Theoretically speaking, the GeForce GTX 950M is 25% quicker than the Radeon HD 3650 256MB in general, due to its greater data rate. (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 (more or less 530%) more effective at AF 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

The GeForce GTX 950M will be quite a bit (about 404%) better at AA than the Radeon HD 3650 256MB, and should be capable of handling higher screen resolutions without slowing down too much. (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: Memory bandwidth is the largest amount of data (measured in MB per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the bus width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This number is calculated by multiplying the total amount of texture units 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.