AMD · Radeon

AMD Radeon 550X

The AMD Radeon 550X is a graphics card released on April 3, 2018, built on the GCN architecture. It has 512 shading units, 4 GB of GDDR5 memory on a 64-bit bus, 56.0 GB/s of memory bandwidth and a boost clock of 1.29 GHz. It scores 1,479 in the PassMark G3D benchmark. It supports DirectX 12.

GCN

9/10 key specs recorded · 45 facts

Depth: 27 recorded fields, 10 features, 5 PassMark workloads

Specification data last verified July 27, 2026 against PassMark Videocard Benchmark and AMD.com Specifications. Coverage: 9 of 10 tracked specifications recorded.

PassMark Videocard Benchmark AMD.com Specifications PassMark Videocard Benchmark

Shading units

512cores

8 compute units

Memory

4 GB

GDDR5 · 64-bit

Boost clock

1.29 GHz

Board power

n/a

Performance

The AMD Radeon 550X scores 1,479 in the PassMark G3D benchmark, higher than 60.8% of the 2,658 GPUs benchmarked (PassMark rank #1,192), measured across 65 submitted results. Its PassMark G2D score is 217.

PassMark G3D Mark

1,479

Rank #1,192
Faster than 60.8% of 2,658 GPUs
65 samples

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

PassMark workload tests

DirectX 9 23 fps

reference: fastest recorded 526 fps · faster than 40.2% of 1,675 GPUs

DirectX 10 5 fps

reference: fastest recorded 231 fps · faster than 35.9% of 1,602 GPUs

DirectX 11 10 fps

reference: fastest recorded 362 fps · faster than 31.2% of 1,430 GPUs

DirectX 12 10 fps

reference: fastest recorded 213 fps · faster than 35.8% of 1,274 GPUs

GPU Compute 644 ops/s

reference: fastest recorded 26,591 ops/s · faster than 34.3% 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 550X averages DirectX 9 23 fps, DirectX 10 5 fps, DirectX 11 10 fps, DirectX 12 10 fps and GPU Compute 644 ops/s, across 65 submitted results. Frames per second are PassMark test-scene rates, not game frame rates.

Theoretical throughput

FP32 (single precision) 1.65 TFLOPS stated by AMD

Pixel fill rate 20.6 GPixel/s stated by AMD

Texture fill rate 51.48 GTexel/s stated by AMD

AMD states a peak of FP32 (single precision) 1.65 TFLOPS, Pixel fill rate 20.6 GPixel/s and Texture fill rate 51.48 GTexel/s for the AMD Radeon 550X.

As stated by PassMark

First benchmarked 2019-09-03

Samples 65

PassMark listing (collected 2026-10-01)

Graphics processor

Architecture GCN

Codename Not recorded

Chip Not recorded

Process node Not recorded

Transistors Not recorded

Die size Not recorded

The AMD Radeon 550X is based on the GCN architecture.

Shader configuration

Shading units 512

Compute units 8

Streaming multiprocessors Not recorded

Execution units Not recorded

Texture units (TMUs) Not recorded

Render output units (ROPs) Not recorded

Ray tracing cores Not recorded

Tensor / AI cores Not recorded

XMX engines Not recorded

Infinity cache Not recorded

The AMD Radeon 550X has 512 shading units and 8 compute units.

The AMD Radeon 550X does not use XMX engines; those are specific to Intel Arc graphics. Feex has no recorded ray tracing core count for the AMD Radeon 550X.

Clock speeds

Base clock Not recorded

Boost clock 1.29 GHz

Game clock Not recorded

Memory clock Not recorded

Effective memory clock Not recorded

The AMD Radeon 550X boosts to 1.29 GHz.

Memory

Size 4 GB

Type GDDR5

Bus width 64-bit

Bandwidth 56.0 GB/s

The AMD Radeon 550X is equipped with 4 GB of GDDR5 memory, uses a 64-bit memory bus and delivers 56.0 GB/s of memory bandwidth.

Market

Launched April 3, 2018

Launch price Not recorded

Status Not recorded

Form factor Not recorded

Segment Desktop

Series Radeon

The AMD Radeon 550X was released on April 3, 2018.

Benchmarks

PassMark G3D 1,479

PassMark G2D 217

Rank #1,192

Samples 65

Graphics and compute APIs

The AMD Radeon 550X supports DirectX 12.

DirectX 12

CUDA is an NVIDIA technology and does not apply to the AMD Radeon 550X. Feex has no recorded Vulkan version for the AMD Radeon 550X. Feex has no recorded OpenCL version for the AMD Radeon 550X.

Features

The AMD Radeon 550X has 4 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 550X 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 550X supports AMD FreeSync and HDMI 4K output under Display features.

Software and drivers

Supported: Radeon Chill

AMD driver feature that lowers frame rate when there is little on-screen action to cut power use and heat.
Supported: Radeon ReLive

AMD's built-in tool for recording and streaming gameplay.

Not listed (6)

No source Feex holds states whether the AMD Radeon 550X supports Enhanced Sync, Image sharpening, Radeon Anti-Lag, Radeon Boost, Radeon Super Resolution and AMD Fluid Motion Frames. That is silence, not a statement that they are unsupported.

The AMD Radeon 550X supports Radeon Chill and Radeon ReLive under Software and drivers.

Media engine

The AMD Radeon 550X provides hardware encode for H.264 (AVC) and HEVC (H.265) and hardware decode for H.264 (AVC) and HEVC (H.265).

Hardware video codec support of the AMD Radeon 550X
Codec	Encode	Decode
H.264 (AVC)4K H.264: encode supported, decode supported	Supported	Supported
HEVC (H.265)	Supported	Supported

supported explicitly not supported not stated by the vendor

Not listed: AV1 and VP9. No source Feex holds states whether the AMD Radeon 550X supports these codecs; that is silence, not a statement that they are unsupported.

Display outputs

The AMD Radeon 550X offers outputs DisplayPort 1.4 HDR, HDMI 4K60 Support, Dual Link DVI and DisplayPort 1.4.

Outputs DisplayPort 1.4 HDR, HDMI 4K60 Support, Dual Link DVI

DisplayPort 1.4

Naming and aliases

The AMD Radeon 550X is also known by other names: PassMark also lists it as Radeon 550X.

Other names (PassMark) Radeon 550X

Frequently asked questions

How much VRAM does the AMD Radeon 550X have?

The AMD Radeon 550X has 4 GB of GDDR5 memory on a 64-bit bus. Its memory bandwidth is 56.0 GB/s.

How fast is the AMD Radeon 550X?

The AMD Radeon 550X scores 1,479 in the PassMark G3D benchmark, higher than 60.8% of the 2,658 GPUs benchmarked. Its PassMark rank is #1,192. In the PassMark DirectX 12 test it averages 10 fps.