Radeon R9 285 vs Radeon R9 380 2G

Intro

Compare all that to the Radeon R9 380 2G, which uses a 28 nm design. AMD has set the core frequency at 970 MHz. The GDDR5 RAM runs at a frequency of 1425 MHz on this specific model. It features 1792 SPUs as well as 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

Theoretically speaking, the Radeon R9 380 2G should be a bit faster than the Radeon R9 285 overall. (explain)

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

Texel Rate

The Radeon R9 380 2G will be a little bit (more or less 6%) more effective at anisotropic filtering 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%) more effective at full screen anti-aliasing than the Radeon R9 285, and will be able to handle higher screen resolutions without losing too much performance. (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 max amount of data (measured in MB per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the interface width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster 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 texture map elements (texels) that are processed in one second. This is calculated by multiplying the total texture units by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.