Radeon R9 280 vs Radeon R9 380 2G

Intro

Compare those specifications to the Radeon R9 380 2G, which features a core clock speed of 970 MHz and a GDDR5 memory frequency of 1425 MHz. It also features a 256-bit memory bus, and uses a 28 nm design. It features 1792 SPUs, 112 Texture Address Units, and 32 Raster Operation Units.

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 280		7961 points
	Difference: 889 (11%)

Ethereum Mining Hash Rate

Radeon R9 280		22 Mh/s
Radeon R9 380 2G		19 Mh/s
	Difference: 3 (16%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 380 2G		190 Watts
Radeon R9 280		250 Watts
	Difference: 60 Watts (32%)

Memory Bandwidth

Performance-wise, the Radeon R9 280 should theoretically be much superior to the Radeon R9 380 2G in general. (explain)

Radeon R9 280		240000 MB/sec
Radeon R9 380 2G		182400 MB/sec
	Difference: 57600 (32%)

Texel Rate

The Radeon R9 380 2G is a small bit (approximately 4%) faster with regards to AF than the Radeon R9 280. (explain)

Radeon R9 380 2G		108640 Mtexels/sec
Radeon R9 280		104496 Mtexels/sec
	Difference: 4144 (4%)

Pixel Rate

The Radeon R9 380 2G will be just a bit (approximately 4%) more effective at AA than the Radeon R9 280, and also will be capable of handling higher resolutions while still performing well. (explain)

Radeon R9 380 2G		31040 Mpixels/sec
Radeon R9 280		29856 Mpixels/sec
	Difference: 1184 (4%)

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 (in units of MB per second) that can be transferred over the external memory interface in a second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 number of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the graphics 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 maximum amount of pixels that the graphics chip can possibly write to the 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 speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.