AMD Radeon HD 8870M vs AMD Radeon RX 6850M XT

VS

AMD Radeon HD 8870M

AMD Radeon RX 6850M XT

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 8870M 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 RX 6850M XT 's Advantages

Released 8 years and 9 months late

Boost Clock has increased by 233% (2581MHz vs 775MHz)

More VRAM (12GB vs 2GB)

Larger VRAM bandwidth (384.0GB/s vs 72.00GB/s)

1920 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 8870M

0.992 TFLOPS

Radeon RX 6850M XT +1231%

13.21 TFLOPS

Radeon HD 8870M

VS

Radeon RX 6850M XT

Graphics Card

Apr 2013

Release Date

Jan 2022

Solar System

Generation

Mobility Radeon

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

725 MHz

Base Clock

2321 MHz

775 MHz

Boost Clock

2581 MHz

1125 MHz

Memory Clock

2000 MHz

Memory

2GB

Memory Size

12GB

GDDR5

Memory Type

GDDR6

128bit

Memory Bus

192bit

72.00GB/s

Bandwidth

384.0GB/s

Render Config

10

Compute Units

40

-

640

Shading Units

2560

40

TMUs

160

16

ROPs

64

-

RT Cores

40

16 KB (per CU)

L1 Cache

128 KB per Array

256 KB

L2 Cache

3 MB

-

L3 Cache

96 MB

Theoretical Performance

12.40 GPixel/s

Pixel Rate

165.2 GPixel/s

31.00 GTexel/s

Texture Rate

413.0 GTexel/s

-

FP16 (half)

26.43 TFLOPS

992.0 GFLOPS

FP32 (float)

13.21 TFLOPS

62.00 GFLOPS

FP64 (double)

825.9 GFLOPS

Board Design

Unknown

TDP

165W

-

Portable Device Dependent

Outputs

No outputs

-

Power Connectors

None

Graphics Processor

Venus

GPU Name

Navi 22

Venus XT (216-0846000)

GPU Variant

Navi 22 XTM

GCN 1.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

7 nm

1.5 billion

Transistors

17.2 billion

123 mm²

Die Size

335 mm²

Graphics Features

12 (11_1)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.1 (1.2)

OpenCL

2.1

1.2.170

Vulkan

1.3

-

6.5 (5.1)

Shader Model

6.5

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