Radeon R9 M380 vs Radeon RX 480 4GB

Intro

Compare that to the Radeon RX 480 4GB, which has GPU clock speed of 1120 MHz, and 4096 MB of GDDR5 RAM running at 1750 MHz through a 256-bit bus. It also features 2304 SPUs, 144 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon RX 480 4GB, in theory, should perform quite a bit faster than the Radeon R9 M380 in general. (explain)

Radeon RX 480 4GB		229376 MB/sec
Radeon R9 M380		96000 MB/sec
	Difference: 133376 (139%)

Texel Rate

The Radeon RX 480 4GB will be a lot (approximately 303%) more effective at AF than the Radeon R9 M380. (explain)

Radeon RX 480 4GB		161280 Mtexels/sec
Radeon R9 M380		40000 Mtexels/sec
	Difference: 121280 (303%)

Pixel Rate

The Radeon RX 480 4GB is a lot (approximately 124%) faster with regards to full screen anti-aliasing than the Radeon R9 M380, and also able to handle higher screen resolutions without slowing down too much. (explain)

Radeon RX 480 4GB		35840 Mpixels/sec
Radeon R9 M380		16000 Mpixels/sec
	Difference: 19840 (124%)

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 data (measured in megabytes per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the interface width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

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