Radeon HD 3650 512MB vs Radeon R9 M380

Intro

Compare that to the Radeon R9 M380, which has a clock frequency of 1000 MHz and a GDDR5 memory speed of 1500 MHz. It also features a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Radeon R9 M380 should be a lot faster than the Radeon HD 3650 512MB in general. (explain)

Radeon R9 M380		96000 MB/sec
Radeon HD 3650 512MB		25600 MB/sec
	Difference: 70400 (275%)

Texel Rate

The Radeon R9 M380 should be quite a bit (about 590%) better at AF than the Radeon HD 3650 512MB. (explain)

Radeon R9 M380		40000 Mtexels/sec
Radeon HD 3650 512MB		5800 Mtexels/sec
	Difference: 34200 (590%)

Pixel Rate

The Radeon R9 M380 will be quite a bit (more or less 452%) better at anti-aliasing than the Radeon HD 3650 512MB, and will be able to handle higher resolutions while still performing well. (explain)

Radeon R9 M380		16000 Mpixels/sec
Radeon HD 3650 512MB		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 max amount of information (in units of megabytes per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number 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 applied per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines 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 output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.