AMD · Radeon

AMD Radeon R9 390X

The AMD Radeon R9 390X is a graphics card released on June 1, 2015, built on the GCN architecture using a 28 nm process. It has 2,816 shading units, 8 GB of GDDR5 memory on a 512-bit bus, 384.0 GB/s of memory bandwidth, a boost clock of 1.05 GHz and a 275 W board power rating. It scores 9,185 in the PassMark G3D benchmark. It supports DirectX 12, OpenGL 4.5 and OpenCL 2.0.

GCNGrenada XT28 nm

10/10 key specs recorded · 66 facts

Depth: 46 recorded fields, 3 features, 5 PassMark workloads

Specification data last verified October 1, 2026 against PassMark Videocard Benchmark, AMD.com Specifications and Wikipedia GPU list tables (wikigrid-2026-09). Coverage: 10 of 10 tracked specifications recorded.

PassMark Videocard Benchmark AMD.com Specifications PassMark Videocard Benchmark Wikipedia GPU list tables (wikigrid-2026-09)

Shading units

2,816cores

44 compute units

Memory

8 GB

GDDR5 · 512-bit

Boost clock

1.05 GHz

1.05 GHz base

Board power

275 W

Performance

The AMD Radeon R9 390X scores 9,185 in the PassMark G3D benchmark, higher than 87.9% of the 2,658 GPUs benchmarked (PassMark rank #331), measured across 1,403 submitted results. Its PassMark G2D score is 816.

PassMark G3D Mark

9,185

Rank #331
Faster than 87.9% of 2,658 GPUs
1,403 samples

0relative to the fastest GPU on record (41,928)

PassMark workload tests

DirectX 9 142 fps

reference: fastest recorded 526 fps · faster than 82.9% of 1,675 GPUs

DirectX 10 55 fps

reference: fastest recorded 231 fps · faster than 78% of 1,602 GPUs

DirectX 11 57 fps

reference: fastest recorded 362 fps · faster than 73.8% of 1,430 GPUs

DirectX 12 40 fps

reference: fastest recorded 213 fps · faster than 74.4% of 1,274 GPUs

GPU Compute 3,553 ops/s

reference: fastest recorded 26,591 ops/s · faster than 77.1% of 1,447 GPUs

Averages of PassMark PerformanceTest submissions; frames/sec are PassMark test-scene rates, not game FPS. Tests PassMark does not report for this card are omitted. PassMark listing

In the PassMark workload tests the AMD Radeon R9 390X averages DirectX 9 142 fps, DirectX 10 55 fps, DirectX 11 57 fps, DirectX 12 40 fps and GPU Compute 3,553 ops/s, across 1,403 submitted results. Frames per second are PassMark test-scene rates, not game frame rates.

Theoretical throughput

Texture fill rate 184.8 GTexel/s calculatedcalculated from TMUs x boost clock (MHz) / 1000 = 176 x 1050 / 1000

Texture fill rate (184.8 GTexel/s) is calculated by Feex from stored specifications, not stated by AMD.

As stated by PassMark

Category Desktop

Bus interface PCIe 3.0 x16

Max memory 8 GB

Core clock 1050 MHz

Memory clock 1500 MHz

DirectX 12.0

OpenGL 4.5

Max TDP 275 W

First benchmarked 2016-04-05

Samples 1,403

PassMark listing (collected 2026-10-01)

PassMark's own listing for the AMD Radeon R9 390X states the PCIe 3.0 x16 interface, up to 8 GB of memory, a core clock of 1050 MHz, DirectX 12.0 and OpenGL 4.5, first benchmarked on 2016-04-05. These are PassMark's figures, shown separately from the specification tables above.

Graphics processor

Architecture GCN

Codename Grenada XT

Chip Not recorded

Process node 28 nm

Transistors 6,200 M

Die size 438 mm²

The AMD Radeon R9 390X is based on the GCN architecture, uses the Grenada XT graphics processor, is manufactured on a 28 nm process, contains 6,200 million transistors and has a die size of 438 mm².

Shader configuration

Shading units 2,816

Compute units 44

Streaming multiprocessors Not recorded

Execution units Not recorded

Texture units (TMUs) 176

Render output units (ROPs) 64

Ray tracing cores Not recorded

Tensor / AI cores Not recorded

XMX engines Not recorded

Infinity cache Not recorded

The AMD Radeon R9 390X has 2,816 shading units, 44 compute units, 176 texture mapping units and 64 render output units.

The AMD Radeon R9 390X does not use XMX engines; those are specific to Intel Arc graphics. Feex has no recorded ray tracing core count for the AMD Radeon R9 390X.

Clock speeds

Base clock 1.05 GHz

Boost clock 1.05 GHz

Game clock Not recorded

Memory clock Not recorded

Effective memory clock Not recorded

The AMD Radeon R9 390X runs at a base clock of 1.05 GHz and boosts to 1.05 GHz.

Memory

Size 8 GB

Type GDDR5

Bus width 512-bit

Bandwidth 384.0 GB/s

The AMD Radeon R9 390X is equipped with 8 GB of GDDR5 memory, uses a 512-bit memory bus and delivers 384.0 GB/s of memory bandwidth.

Board and power

The AMD Radeon R9 390X has a board power rating of 275 W and it connects over PCIe 3.0 x16.

Board power (TDP) 275 W

Total board power Not recorded

Suggested PSU Not recorded

Power connectors Not recorded

Slot width Not recorded

Length Not recorded

Width Not recorded

Height Not recorded

Cooler Not recorded

Max temperature Not recorded

Bus interface PCIe 3.0 x16

Market

Launched June 1, 2015

Launch price $429

Status Not recorded

Form factor Not recorded

Segment Desktop

Series Radeon

The AMD Radeon R9 390X was released on June 1, 2015 and launched at a price of $429.

Benchmarks

PassMark G3D 9,185

PassMark G2D 816

Rank #331

Samples 1,403

Graphics and compute APIs

The AMD Radeon R9 390X supports DirectX 12, OpenGL 4.5 and OpenCL 2.0.

DirectX 12

OpenGL 4.5

OpenCL 2.0

CUDA is an NVIDIA technology and does not apply to the AMD Radeon R9 390X. Feex has no recorded Vulkan version for the AMD Radeon R9 390X.

Features

The AMD Radeon R9 390X has 2 supported features recorded outside the media engine. A feature that no source mentions is shown as not listed, never as unsupported.

Display features

Supported: AMD FreeSync

Support for AMD's variable refresh rate technology, which syncs compatible displays to the GPU to reduce tearing and stutter.
Supported: HDMI 4K output

The vendor states the GPU can drive a 4K display over HDMI.

Not listed (6)

No source Feex holds states whether the AMD Radeon R9 390X supports Stereoscopic 3D, 10-bit color output, VR ready, 8K display output, HDR output and 12-bit color output. That is silence, not a statement that they are unsupported.

The AMD Radeon R9 390X supports AMD FreeSync and HDMI 4K output under Display features.

Media engine

Feex holds no codec support statement for the AMD Radeon R9 390X.

AMD Video Coding Engine SupportedAMD's older dedicated video-encoding block found on many GCN-era Radeon GPUs.

Not listed: H.264 (AVC), HEVC (H.265), AV1 and VP9. No source Feex holds states whether the AMD Radeon R9 390X supports these codecs; that is silence, not a statement that they are unsupported.

Media engines recorded for the AMD Radeon R9 390X: AMD Video Coding Engine.

Display outputs

The AMD Radeon R9 390X offers outputs DisplayPort, HDMI.

Outputs DisplayPort, HDMI

Naming and aliases

The AMD Radeon R9 390X is also known by other names: PassMark also lists it as ASUS R9 390X Series.

Other names (PassMark) ASUS R9 390X Series

Frequently asked questions

How much VRAM does the AMD Radeon R9 390X have?

The AMD Radeon R9 390X has 8 GB of GDDR5 memory on a 512-bit bus. Its memory bandwidth is 384.0 GB/s.

How much power does the AMD Radeon R9 390X use and what power supply does it need?

The AMD Radeon R9 390X has a board power rating of 275 W.

How fast is the AMD Radeon R9 390X?

The AMD Radeon R9 390X scores 9,185 in the PassMark G3D benchmark, higher than 87.9% of the 2,658 GPUs benchmarked. Its PassMark rank is #331. In the PassMark DirectX 12 test it averages 40 fps.

What bus interface does the AMD Radeon R9 390X use?

The AMD Radeon R9 390X connects over PCIe 3.0 x16.

When was the AMD Radeon R9 390X released and how much did it cost at launch?

The AMD Radeon R9 390X was released on June 1, 2015 and launched at a price of $429.

Corrections to this record

After an audit, 1 empty field was filled from sources. Each change is listed with its old value, new value, rule and sources.

1 filled value

Architecture: GCN (was Not recorded). Rule: Architecture from chip codename. chip Grenada -> GCN 2. Sources: Wikipedia: List of AMD graphics processing units (revision 1376670003).

The audit log is public: all changes for this GPU, the corrections overview and the method.