Radeon R9 285 vs Radeon R9 380 2G

Intro

Compare those specs to the Radeon R9 380 2G, which comes with a GPU core clock speed of 970 MHz, and 2048 MB of GDDR5 memory set to run at 1425 MHz through a 256-bit bus. It also is comprised of 1792 SPUs, 112 Texture Address Units, and 32 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon R9 380 2G		8850 points
Radeon R9 285		8500 points
	Difference: 350 (4%)

Ethereum Mining Hash Rate

Radeon R9 380 2G		19 Mh/s
Radeon R9 285		18 Mh/s
	Difference: 1 (6%)

Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

The Radeon R9 380 2G should theoretically be a little bit faster than the Radeon R9 285 in general. (explain)

Radeon R9 380 2G		182400 MB/sec
Radeon R9 285		176000 MB/sec
	Difference: 6400 (4%)

Texel Rate

The Radeon R9 380 2G is just a bit (more or less 6%) better at AF than the Radeon R9 285. (explain)

Radeon R9 380 2G		108640 Mtexels/sec
Radeon R9 285		102816 Mtexels/sec
	Difference: 5824 (6%)

Pixel Rate

The Radeon R9 380 2G will be a small bit (approximately 6%) faster with regards to AA than the Radeon R9 285, and will be able to handle higher screen resolutions better. (explain)

Radeon R9 380 2G		31040 Mpixels/sec
Radeon R9 285		29376 Mpixels/sec
	Difference: 1664 (6%)

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 (counted in MB per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory per 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 lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.