GPU Comparison

A

AMD

RADEON

AMD Radeon Pro 555X

CORE STATE Polaris 21

VRAM 4 GB

CLOCK SPEED —

TDP 75 W

BUS WIDTH 128 bit

ARCHITECTURE GCN 4.0

nm

PROCESS 14 nm

LAUNCH DATE 2018

VS

A

AMD

RADEON

Radeon RX 6900 XT

CORE STATE Navi 21

VRAM 16 GB

CLOCK SPEED 2250 MHz

TDP 300 W

BUS WIDTH 256 bit

ARCHITECTURE RDNA 2.0

nm

PROCESS 7 nm

LAUNCH DATE 2020

PERFORMANCE BENCHMARKS

geekbench_metal

17,638

207,444

geekbench_opencl

12,661

167,057

geekbench_vulkan

13,201

166,636

3dmark_3dmark_steel_nomad_dx12

N/A

4,079

passmark_directx_10

N/A

167

passmark_directx_11

N/A

279

passmark_directx_12

N/A

113

passmark_directx_9

N/A

268

passmark_g2d

N/A

1,055

passmark_g3d

N/A

26,732

passmark_gpu_compute

N/A

14,547

DETAILED SPECIFICATIONS

SPECIFICATION

Pro 555X

RX 6900 XT

Core Specs

Shading Units

768

5,120 +566.7%

Shaders

768

5,120 +566.7%

TMUs

48

320 +566.7%

ROPs

16

128 +700.0%

Compute Units

12

80 +566.7%

Clocks

Base Clock

—

1825 MHz

Boost Clock

—

2250 MHz

GPU Clock

907 MHz

—

Game Clock

—

2015 MHz

Memory Clock

1470 MHz 5.9 Gbps effective

2000 MHz 16 Gbps effective

Memory

Memory Size

4 GB

16 GB

VRAM (MB)

4,096

16,384 +300.0%

Memory Type

GDDR5

GDDR6

Memory Bus

128 bit

256 bit

Bandwidth

94.08 GB/s

512.0 GB/s

Cache

L1 Cache

16 KB (per CU)

128 KB per Array

L2 Cache

1024 KB

4 MB

L3 Cache

—

128 MB

L0 Cache

—

32 KB per WGP

Performance

Pixel Rate

14.51 GPixel/s

288.0 GPixel/s

Texture Rate

43.54 GTexel/s

720.0 GTexel/s

FP32 (TFLOPS)

1,393.2 GFLOPS

23.04 TFLOPS

FP64 (TFLOPS)

87.07 GFLOPS (1:16)

1,440.0 GFLOPS (1:16)

FP16 (TFLOPS)

1,393.2 GFLOPS (1:1)

46.08 TFLOPS (2:1)

AI/RT

RT Cores

—

80

Power

TDP

75 W

300 W

TDP (W)

75

300 +300.0%

Suggested PSU

—

700 W

Power Connectors

None

2x 8-pin

Architecture

Architecture

GCN 4.0

RDNA 2.0

GPU Name

Polaris 21

Navi 21

Generation

Radeon Pro Mac (500X Series)

Navi II (RX 6000)

Process Size

14 nm

7 nm

Transistors

3,000 million

26,800 million

Die Size

123 mm²

520 mm²

Foundry

GlobalFoundries

TSMC

Density

24.4M / mm²

51.5M / mm²

API Support

DirectX

12 (12_0)

12 Ultimate (12_2)

OpenGL

4.6

4.6

Vulkan

1.3

1.4

OpenCL

2.1

2.1

Shader Model

6.7

6.8

Physical

Slot Width

IGP

Triple-slot

Length

—

267 mm 10.5 inches

Height

—

120 mm 4.7 inches

Outputs

Portable Device Dependent

1x HDMI 2.12x DisplayPort 1.4a1x USB Type-C

Bus Interface

PCIe 3.0 x8

PCIe 4.0 x16

Other

Launch Price

—

999 USD

Production

End-of-life

End-of-life

Predecessor

—

Navi

Successor

—

Navi III

View Radeon Pro 555X Details View Radeon RX 6900 XT Details