Radeon R9 280X vs Radeon R9 380X

Intro

Compare that to the Radeon R9 380X, which makes use of a 28 nm design. AMD has set the core speed at 970 MHz. The GDDR5 memory is set to run at a frequency of 1425 MHz on this specific model. 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

As far as performance goes, the Radeon R9 280X should in theory be quite a bit superior to the Radeon R9 380X in general. (explain)

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

Texel Rate

The Radeon R9 380X will be just a bit (more or less 14%) more effective at AF than the Radeon R9 280X. (explain)

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

Pixel Rate

The Radeon R9 380X is a small bit (about 14%) faster with regards to AA than the Radeon R9 280X, and should be able to handle higher screen resolutions without losing too much performance. (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: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be moved across the external memory interface in one second. It is worked out by multiplying the bus width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This number is calculated by multiplying the total amount of texture units of the card 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 processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.