AMD Radeon R9 M390 Mac Edition vs AMD Radeon RX 6850M XT

VS

AMD Radeon R9 M390 Mac Edition AMD Radeon RX 6850M XT

We compared two Mobile platform GPUs: 2GB VRAM Radeon R9 M390 Mac Edition and 12GB VRAM Radeon RX 6850M XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M390 Mac Edition 's Advantages

Lower TDP (80W vs 165W)

AMD Radeon RX 6850M XT 's Advantages

Released 6 years and 8 months late

Boost Clock2581MHz

More VRAM (12GB vs 2GB)

Larger VRAM bandwidth (384.0GB/s vs 174.7GB/s)

1536 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 M390 Mac Edition

1.962 TFLOPS

Radeon RX 6850M XT +573%

13.21 TFLOPS

Radeon R9 M390 Mac Edition

VS

Radeon RX 6850M XT

Graphics Card

May 2015

Release Date

Jan 2022

Crystal System

Generation

Mobility Radeon

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

2321 MHz

-

Boost Clock

2581 MHz

1365 MHz

Memory Clock

2000 MHz

Memory

2GB

Memory Size

12GB

GDDR5

Memory Type

GDDR6

256bit

Memory Bus

192bit

174.7GB/s

Bandwidth

384.0GB/s

Render Config

-

SM Count

-

16

Compute Units

40

1024

Shading Units

2560

64

TMUs

160

32

ROPs

64

-

Tensor Cores

-

RT Cores

40

16 KB (per CU)

L1 Cache

128 KB per Array

512 KB

L2 Cache

3 MB

Theoretical Performance

30.66 GPixel/s

Pixel Rate

165.2 GPixel/s

61.31 GTexel/s

Texture Rate

413.0 GTexel/s

-

FP16 (half)

26.43 TFLOPS

1.962 TFLOPS

FP32 (float)

13.21 TFLOPS

122.6 GFLOPS

FP64 (double)

825.9 GFLOPS

Graphics Processor

Pitcairn

GPU Name

Navi 22

Pitcairn PRO (215-0828062)

GPU Variant

Navi 22 XTM

GCN 1.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

7 nm

2.8 billion

Transistors

17.2 billion

212 mm²

Die Size

335 mm²

Board Design

80W

TDP

165W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

None

Graphics Features

12 (11_1)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

1.2

OpenCL

2.1

1.2

Vulkan

1.3

-

CUDA

-

5.1

Shader Model

6.5

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