Radeon HD 3650 vs Radeon R9 M380

Intro

Compare those specs to the Radeon R9 M380, which has a clock frequency of 1000 MHz and a GDDR5 memory frequency of 1500 MHz. It also makes use of a 128-bit bus, and uses a 28 nm design. It is made up of 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 M380 will be 275% quicker than the Radeon HD 3650 in general, due to its greater bandwidth. (explain)

Radeon R9 M380		96000 MB/sec
Radeon HD 3650		25600 MB/sec
	Difference: 70400 (275%)

Texel Rate

The Radeon R9 M380 should be much (about 590%) faster with regards to texture filtering than the Radeon HD 3650. (explain)

Radeon R9 M380		40000 Mtexels/sec
Radeon HD 3650		5800 Mtexels/sec
	Difference: 34200 (590%)

Pixel Rate

The Radeon R9 M380 should be a lot (approximately 452%) better at anti-aliasing than the Radeon HD 3650, and also will be able to handle higher resolutions better. (explain)

Radeon R9 M380		16000 Mpixels/sec
Radeon HD 3650		2900 Mpixels/sec
	Difference: 13100 (452%)

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 maximum amount of information (counted in MB per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher 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 amount of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number 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 drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.