Radeon HD 3650 256MB vs Radeon R5 M230

Intro

Compare all that to the Radeon R5 M230, which uses a 28 nm design. AMD has clocked the core frequency at 780 MHz. The DDR3 RAM works at a speed of 1000 MHz on this particular model. It features 320 SPUs as well as 20 Texture Address Units and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 3650 256MB is 60% quicker than the Radeon R5 M230 in general, because of its greater data rate. (explain)

Radeon HD 3650 256MB		25600 MB/sec
Radeon R5 M230		16000 MB/sec
	Difference: 9600 (60%)

Texel Rate

The Radeon R5 M230 is a lot (approximately 169%) faster with regards to anisotropic filtering than the Radeon HD 3650 256MB. (explain)

Radeon R5 M230		15600 Mtexels/sec
Radeon HD 3650 256MB		5800 Mtexels/sec
	Difference: 9800 (169%)

Pixel Rate

The Radeon R5 M230 will be a bit (more or less 8%) more effective at full screen anti-aliasing than the Radeon HD 3650 256MB, and also able to handle higher resolutions better. (explain)

Radeon R5 M230		3120 Mpixels/sec
Radeon HD 3650 256MB		2900 Mpixels/sec
	Difference: 220 (8%)

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 maximum amount of data (in units of megabytes per second) that can be moved past the external memory interface within a second. The number is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total number of texture units by the core clock 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 processed in a second.

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