Radeon HD 3650 vs Radeon R5 M255

Intro

Compare those specifications to the Radeon R5 M255, which has core clock speeds of 940 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 RAM. It features 320 SPUs along with 20 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 3650 will be 60% quicker than the Radeon R5 M255 overall, because of its greater bandwidth. (explain)

Radeon HD 3650		25600 MB/sec
Radeon R5 M255		16000 MB/sec
	Difference: 9600 (60%)

Texel Rate

The Radeon R5 M255 will be quite a bit (approximately 224%) faster with regards to anisotropic filtering than the Radeon HD 3650. (explain)

Radeon R5 M255		18800 Mtexels/sec
Radeon HD 3650		5800 Mtexels/sec
	Difference: 13000 (224%)

Pixel Rate

The Radeon R5 M255 will be quite a bit (approximately 159%) faster with regards to AA than the Radeon HD 3650, and will be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon R5 M255		7520 Mpixels/sec
Radeon HD 3650		2900 Mpixels/sec
	Difference: 4620 (159%)

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 (counted in megabytes per second) that can be transported past the external memory interface within a second. It's calculated by multiplying the bus width by its memory clock speed. 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 anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.