Radeon R9 380 2G vs Radeon R9 390X 8G

Intro

Compare all that to the Radeon R9 390X 8G, which has a GPU core clock speed of 1050 MHz, and 8192 MB of GDDR5 RAM running at 1500 MHz through a 512-bit bus. It also features 2816 SPUs, 176 Texture Address Units, and 64 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 390X 8G		13555 points
Radeon R9 380 2G		8850 points
	Difference: 4705 (53%)

Ethereum Mining Hash Rate

Radeon R9 390X 8G		32 Mh/s
Radeon R9 380 2G		19 Mh/s
	Difference: 13 (68%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 380 2G		190 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 85 Watts (45%)

Memory Bandwidth

The Radeon R9 390X 8G, in theory, should perform a lot faster than the Radeon R9 380 2G in general. (explain)

Radeon R9 390X 8G		384000 MB/sec
Radeon R9 380 2G		182400 MB/sec
	Difference: 201600 (111%)

Texel Rate

The Radeon R9 390X 8G should be quite a bit (more or less 70%) better at texture filtering than the Radeon R9 380 2G. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
Radeon R9 380 2G		108640 Mtexels/sec
	Difference: 76160 (70%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 390X 8G is superior to the Radeon R9 380 2G, and very much so. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
Radeon R9 380 2G		31040 Mpixels/sec
	Difference: 36160 (116%)

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 data (counted in MB per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. 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 number of texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate 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 drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.