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 6600 XT

CORE STATE Navi 23

VRAM 8 GB

CLOCK SPEED 2589 MHz

TDP 160 W

BUS WIDTH 128 bit

ARCHITECTURE RDNA 2.0

nm

PROCESS 7 nm

LAUNCH DATE 2021

PERFORMANCE BENCHMARKS

geekbench_opencl

3,977

82,736

3dmark_3dmark_steel_nomad_dx12

N/A

1,804

geekbench_metal

N/A

108,608

geekbench_vulkan

N/A

89,263

passmark_directx_10

N/A

109

passmark_directx_11

N/A

163

passmark_directx_12

N/A

61

passmark_directx_9

N/A

194

passmark_g2d

N/A

912

passmark_g3d

N/A

16,461

passmark_gpu_compute

N/A

7,520

DETAILED SPECIFICATIONS

SPECIFICATION

HD 6850 X2

RX 6600 XT

Core Specs

Shading Units

960

2,048 +113.3%

Shaders

960

2,048 +113.3%

TMUs

48

128 +166.7%

ROPs

32

64 +100.0%

Compute Units

12

32 +166.7%

Clocks

Base Clock

—

1968 MHz

Boost Clock

—

2589 MHz

GPU Clock

800 MHz

—

Game Clock

—

2359 MHz

Memory Clock

1050 MHz 4.2 Gbps effective

2000 MHz 16 Gbps effective

Memory

Memory Size

2 GB

8 GB

VRAM (MB)

2,048

8,192 +300.0%

Memory Type

GDDR5

GDDR6

Memory Bus

256 bit

128 bit

Bandwidth

134.4 GB/s

256.0 GB/s

Cache

L1 Cache

8 KB (per CU)

128 KB per Array

L2 Cache

512 KB

2 MB

L3 Cache

—

32 MB

L0 Cache

—

32 KB per WGP

Performance

Pixel Rate

25.60 GPixel/s

165.7 GPixel/s

Texture Rate

38.40 GTexel/s

331.4 GTexel/s

FP32 (TFLOPS)

1.536 TFLOPS

10.60 TFLOPS

FP64 (TFLOPS)

—

662.8 GFLOPS (1:16)

FP16 (TFLOPS)

—

21.21 TFLOPS (2:1)

AI/RT

RT Cores

—

32

Power

TDP

254 W

160 W

TDP (W)

254

160 -37.0%

Suggested PSU

600 W

450 W

Power Connectors

2x 8-pin

1x 8-pin

Architecture

Architecture

TeraScale 2

RDNA 2.0

GPU Name

Barts

Navi 23

Generation

Northern Islands (HD 6800)

Navi II (RX 6000)

Process Size

40 nm

7 nm

Transistors

1,700 million

11,060 million

Die Size

255 mm²

237 mm²

Foundry

TSMC

TSMC

Density

6.7M / mm²

46.7M / mm²

API Support

DirectX

11.2 (11_0)

12 Ultimate (12_2)

OpenGL

4.4

4.6

Vulkan

—

1.4

OpenCL

1.2

2.1

Shader Model

5.0

6.8

Physical

Slot Width

Dual-slot

Dual-slot

Length

—

190 mm 7.5 inches

Height

—

110 mm 4.3 inches

Outputs

2x DVI1x HDMI 1.3a1x DisplayPort 1.1

1x HDMI 2.13x DisplayPort 1.4a

Bus Interface

PCIe 2.0 x16

PCIe 4.0 x8

Other

Launch Price

—

379 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 6600 XT Details