Radeon R9 285 vs Radeon R9 380 2G

Intro

Compare those specifications to the Radeon R9 380 2G, which has a core clock speed of 970 MHz and a GDDR5 memory frequency of 1425 MHz. It also makes use of a 256-bit memory bus, and makes use of a 28 nm design. It features 1792 SPUs, 112 TAUs, 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 just a 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 a small 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 is just a bit (more or less 6%) faster with regards to AA than the Radeon R9 285, and also should be able to handle higher resolutions while still performing well. (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: Memory bandwidth is the largest amount of information (measured in megabytes per second) that can be transported across the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory speed. In the case of DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better 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 applied per second. This number is worked out by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the graphics 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 maximum number of pixels that the graphics chip can 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 ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.