Radeon HD 3850 1GB vs Radeon R9 M380

Intro

Compare that to the Radeon R9 M380, which has core clock speeds of 1000 MHz on the GPU, and 1500 MHz on the 4096 MB of GDDR5 RAM. It features 640 SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Radeon R9 M380 should perform a lot faster than the Radeon HD 3850 1GB in general. (explain)

Radeon R9 M380		96000 MB/sec
Radeon HD 3850 1GB		52992 MB/sec
	Difference: 43008 (81%)

Texel Rate

The Radeon R9 M380 should be quite a bit (approximately 274%) better at texture filtering than the Radeon HD 3850 1GB. (explain)

Radeon R9 M380		40000 Mtexels/sec
Radeon HD 3850 1GB		10688 Mtexels/sec
	Difference: 29312 (274%)

Pixel Rate

The Radeon R9 M380 should be a lot (more or less 50%) faster with regards to AA than the Radeon HD 3850 1GB, and also should be able to handle higher screen resolutions without losing too much performance. (explain)

Radeon R9 M380		16000 Mpixels/sec
Radeon HD 3850 1GB		10688 Mpixels/sec
	Difference: 5312 (50%)

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 largest amount of information (counted in MB per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

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