GPU Comparison

A

AMD

RADEON

AMD Radeon HD 6850 X2

CORE STATE Barts

VRAM 2 GB

CLOCK SPEED —

TDP 254 W

BUS WIDTH 256 bit

ARCHITECTURE TeraScale 2

nm

PROCESS 40 nm

LAUNCH DATE 2011

VS

A

AMD

RADEON

Radeon RX 6400

CORE STATE Navi 24

VRAM 4 GB

CLOCK SPEED 2321 MHz

TDP 53 W

BUS WIDTH 64 bit

ARCHITECTURE RDNA 2.0

nm

PROCESS 6 nm

LAUNCH DATE 2022

PERFORMANCE BENCHMARKS

geekbench_opencl

3,977

32,977

3dmark_3dmark_steel_nomad_dx12

N/A

176

geekbench_vulkan

N/A

38,040

passmark_directx_10

N/A

54

passmark_directx_11

N/A

70

passmark_directx_12

N/A

30

passmark_directx_9

N/A

93

passmark_g2d

N/A

722

passmark_g3d

N/A

7,673

passmark_gpu_compute

N/A

2,812

DETAILED SPECIFICATIONS

SPECIFICATION

HD 6850 X2

RX 6400

Core Specs

Shading Units

960

768 -20.0%

Shaders

960

768 -20.0%

TMUs

48

48 0.0%

ROPs

32

32 0.0%

Compute Units

12

12 0.0%

Clocks

Base Clock

—

1923 MHz

Boost Clock

—

2321 MHz

GPU Clock

800 MHz

—

Game Clock

—

2039 MHz

Memory Clock

1050 MHz 4.2 Gbps effective

2000 MHz 16 Gbps effective

Memory

Memory Size

2 GB

4 GB

VRAM (MB)

2,048

4,096 +100.0%

Memory Type

GDDR5

GDDR6

Memory Bus

256 bit

64 bit

Bandwidth

134.4 GB/s

128.0 GB/s

Cache

L1 Cache

8 KB (per CU)

128 KB per Array

L2 Cache

512 KB

1024 KB

L3 Cache

—

16 MB

L0 Cache

—

32 KB per WGP

Performance

Pixel Rate

25.60 GPixel/s

74.27 GPixel/s

Texture Rate

38.40 GTexel/s

111.4 GTexel/s

FP32 (TFLOPS)

1.536 TFLOPS

3.565 TFLOPS

FP64 (TFLOPS)

—

222.8 GFLOPS (1:16)

FP16 (TFLOPS)

—

7.130 TFLOPS (2:1)

AI/RT

RT Cores

—

12

Power

TDP

254 W

53 W

TDP (W)

254

53 -79.1%

Suggested PSU

600 W

250 W

Power Connectors

2x 8-pin

None

Architecture

Architecture

TeraScale 2

RDNA 2.0

GPU Name

Barts

Navi 24

Generation

Northern Islands (HD 6800)

Navi II (RX 6000)

Process Size

40 nm

6 nm

Transistors

1,700 million

5,400 million

Die Size

255 mm²

107 mm²

Foundry

TSMC

TSMC

Density

6.7M / mm²

50.5M / mm²

API Support

DirectX

11.2 (11_0)

12 Ultimate (12_2)

OpenGL

4.4

4.6

Vulkan

—

1.4

OpenCL

1.2

2.2

Shader Model

5.0

6.8

Physical

Slot Width

Dual-slot

Single-slot

Outputs

2x DVI1x HDMI 1.3a1x DisplayPort 1.1

1x HDMI 2.11x DisplayPort 1.4a

Bus Interface

PCIe 2.0 x16

PCIe 4.0 x4

Other

Launch Price

—

159 USD

Production

End-of-life

End-of-life

Predecessor

Evergreen

Navi

Successor

Southern Islands

Navi III

View Radeon HD 6850 X2 Details View Radeon RX 6400 Details