AMD Radeon RX 6850M XT vs ATI Mobility Radeon HD 4870 X2

VS

AMD Radeon RX 6850M XT

ATI Mobility Radeon HD 4870 X2

We compared two Mobile platform GPUs: 12GB VRAM Radeon RX 6850M XT and 1024MB VRAM Mobility Radeon HD 4870 X2 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 13 years late

Boost Clock2581MHz

More VRAM (12GB vs 1024GB)

Larger VRAM bandwidth (384.0GB/s vs 89.60GB/s)

1760 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6850M XT +1401%

13.21 TFLOPS

Mobility Radeon HD 4870 X2

0.88 TFLOPS

Radeon RX 6850M XT

VS

Mobility Radeon HD 4870 X2

Graphics Card

Jan 2022

Release Date

Jan 2009

Mobility Radeon

Generation

M9x

Mobile

Type

Mobile

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

2321 MHz

Base Clock

-

2581 MHz

Boost Clock

-

2000 MHz

Memory Clock

700 MHz

Memory

12GB

Memory Size

1024MB

GDDR6

Memory Type

GDDR5

192bit

Memory Bus

256bit

384.0GB/s

Bandwidth

89.60GB/s

Render Config

40

Compute Units

10

-

2560

Shading Units

800

160

TMUs

40

64

ROPs

16

-

40

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

3 MB

L2 Cache

256 KB

96 MB

L3 Cache

-

Theoretical Performance

165.2 GPixel/s

Pixel Rate

8.800 GPixel/s

413.0 GTexel/s

Texture Rate

22.00 GTexel/s

26.43 TFLOPS

FP16 (half)

-

13.21 TFLOPS

FP32 (float)

880.0 GFLOPS

825.9 GFLOPS

FP64 (double)

176.0 GFLOPS

Board Design

165W

TDP

Unknown

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

None

Graphics Processor

Navi 22

GPU Name

M98

Navi 22 XTM

GPU Variant

M98 XT L2 (216-0732023)

RDNA 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

7 nm

Process Size

55 nm

17.2 billion

Transistors

0.956 billion

335 mm²

Die Size

256 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

2.1

OpenCL

1.1

1.3

Vulkan

N/A

-

6.5

Shader Model

4.1

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