AMD Radeon R9 380 vs AMD Radeon R9 390X

Compare AMD Radeon R9 380 4 GB vs AMD Radeon R9 390X 8 GB, specs and GPU benchmark score. Which is the better graphics card for the money?

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Specifications
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Benchmark Score

Overall Score

General gaming and workstation score

1280 points

1869% significantly better overall score

65 points

Flux Core frame rate

Volumetric ray casting test, a computationally expensive method of rendering high-quality scenes

29 FPS

5 FPS slightly higher Flux Core frame rate

25 FPS

Electron frame rate

Randomly generated noise sphere test

19 FPS

23 FPS

4 FPS slightly higher Electron frame rate

City frame rate

Procedurally generated city scene with voxel rendering

26 FPS

30 FPS

4 FPS slightly higher City frame rate

Clouds frame rate

Real-time noise calculation and ray marching test

10 FPS

14 FPS

4 FPS significantly higher Clouds frame rate

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Other Benchmarks

3DMark Graphics score

High-end graphics benchmark

2801 points

4254 points

51% significantly higher 3DMark Graphics score

Specifications

Core Clock Speed

Nominal chip frequency

970 MHz

1050 MHz

8% slightly higher core clock speed

Boost Clock Speed

Higher turbo frequency when power conditions are met

970 MHz

1050 MHz

8% slightly higher boost clock speed

Memory

Onboard memory size for textures and vertices

4 GiB

8 GiB

100% significantly more memory

Memory Bus Width

Number of parallel lines to the memory chips

256 Bit

512 Bit

100% significantly larger memory bus width

Memory Bandwidth

Data transfer speed between GPU core and memory

4 GB/s

384 GB/s

9499% significantly higher memory bandwidth

TDP

Thermal Design Power: Measure of heat generated by the GPU

190 W

44% significantly lower TDP

275 W

Pixel Rate

Number of pixels that can be rendered per second

31.04 Gigapixels/s

67.2 Gigapixels/s

116% significantly higher pixel rate

Texture Rate

Number of textured pixels that can be rendered per second

108.6 Gigatexels/s

184.8 Gigatexels/s

70% significantly higher texture rate

Floating Point Performance

Raw number of floating point operations per second

3.48 TFLOPS

5.91 TFLOPS

70% significantly better floating point performance

Shading Units

Number of processors dedicated to shader processing

1792

2816

57% significantly more shading units

Texture Mapping Units

Number of processors dedicated to applying textures

112

176

57% significantly more texture mapping units

Render Output Processors

Number of processors dedicated to final pixel rendering

100% significantly more render output processors

Other details

Rank

Ranking in the hardwareDB database

244th of 586

530th of 586

Family

The product line

Radeon R9 300 Series

Release date

The official date of release of this chip

2015 June

Memory Type

The type of memory used by this chip

GDDR5

DirectX Support

Maximum version of DirectX supported

12.0

OpenGL Support

Maximum version of OpenGL supported

4.6

4.5

Radeon R9 380 vs Radeon R9 390X comparison

For gaming, the Radeon R9 380 graphics card is better than the Radeon R9 390X in our tests.

The Radeon R9 390X has a slightly higher core clock speed. This is the frequency at which the graphics core is running at. While not necessarily an indicator of overall performance, this metric can be useful when comparing two GPUs based on the same architecture. In addition, the Radeon R9 390X also has a slightly higher boost clock speed. The boost clock speed is the frequency that the GPU core can reach if the temperature is low enough. The allows for higher performance in certain scenarios.

As stated by the manufacturer, the Radeon R9 390X has significantly more memory with 8 GiB of memory compared to 4 GiB. If you're planning at playing games at high resolutions with high-quality textures, you will need a lot of memory.

In addition, the Radeon R9 380 has a significantly lower TDP at 190 W when compared to the Radeon R9 390X at 275 W. Heat output doesn't match power consumption directly but, it's a good estimate.

In terms of raw gaming performance in our GPU benchmark, the Radeon R9 380 is better than the Radeon R9 390X.