Radeon R9 280X vs Radeon R9 380X

Intro

Compare all that to the Radeon R9 380X, which has core clock speeds of 970 MHz on the GPU, and 1425 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

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 380X		9519 points
Radeon R9 280X		8886 points
	Difference: 633 (7%)

Ethereum Mining Hash Rate

Radeon R9 280X		21 Mh/s
Radeon R9 380X		19 Mh/s
	Difference: 2 (11%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

The Radeon R9 280X should in theory perform a lot faster than the Radeon R9 380X overall. (explain)

Radeon R9 280X		288000 MB/sec
Radeon R9 380X		182400 MB/sec
	Difference: 105600 (58%)

Texel Rate

The Radeon R9 380X is a little bit (approximately 14%) faster with regards to anisotropic filtering than the Radeon R9 280X. (explain)

Radeon R9 380X		124160 Mtexels/sec
Radeon R9 280X		108800 Mtexels/sec
	Difference: 15360 (14%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 380X is a better choice, though only just barely. (explain)

Radeon R9 380X		31040 Mpixels/sec
Radeon R9 280X		27200 Mpixels/sec
	Difference: 3840 (14%)

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 largest amount of information (in units of megabytes per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This 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 card will be at handling 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 the video card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 ability to reach the max fill rate.