AMD Radeon RX 6800 vs AMD Radeon 550X 640SP

VS

AMD Radeon RX 6800

AMD Radeon 550X 640SP

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6800 and 4GB VRAM Radeon 550X 640SP to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6800 's Advantages

Released 2 years and 6 months late

Boost Clock has increased by 97% (2105MHz vs 1071MHz)

More VRAM (16GB vs 4GB)

Larger VRAM bandwidth (512.0GB/s vs 48.00GB/s)

3200 additional rendering cores

AMD Radeon 550X 640SP 's Advantages

Lower TDP (50W vs 250W)

Score

Benchmark

FP32 (float)

Radeon RX 6800 +1079%

16.17 TFLOPS

Radeon 550X 640SP

1.371 TFLOPS

Radeon RX 6800

VS

Radeon 550X 640SP

Graphics Card

Oct 2020

Release Date

Apr 2018

Navi II

Generation

Polaris

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

1700 MHz

Base Clock

1019 MHz

2105 MHz

Boost Clock

1071 MHz

2000 MHz

Memory Clock

1500 MHz

Memory

16GB

Memory Size

4GB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

64bit

512.0GB/s

Bandwidth

48.00GB/s

Render Config

60

Compute Units

10

-

3840

Shading Units

640

240

TMUs

40

96

ROPs

16

-

60

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

4 MB

L2 Cache

256 KB

128 MB

L3 Cache

-

Theoretical Performance

202.1 GPixel/s

Pixel Rate

17.14 GPixel/s

505.2 GTexel/s

Texture Rate

42.84 GTexel/s

32.33 TFLOPS

FP16 (half)

1371 GFLOPS

16.17 TFLOPS

FP32 (float)

1371 GFLOPS

1010 GFLOPS

FP64 (double)

85.68 GFLOPS

Board Design

250W

TDP

50W

600 W

Suggested PSU

250 W

1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C

Outputs

1x DVI 1x HDMI 2.0b 1x DisplayPort 1.4a

2x 8-pin

Power Connectors

None

Graphics Processor

Navi 21

GPU Name

Lexa

Navi 21 XL (215-121000187)

GPU Variant

Lexa PRO (215-0904018)

RDNA 2.0

Architecture

GCN 4.0

TSMC

Foundry

GlobalFoundries

7 nm

Process Size

14 nm

26.8 billion

Transistors

2.2 billion

520 mm²

Die Size

103 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1

OpenCL

2.1

1.3

Vulkan

1.2

-

6.5

Shader Model

6.4

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