GPU Comparison

A

AMD

RADEON

AMD Radeon 660M

CORE STATE Rembrandt

VRAM System Shared

CLOCK SPEED 1900 MHz

TDP 40 W

BUS WIDTH System Shared

ARCHITECTURE RDNA 2.0

nm

PROCESS 6 nm

LAUNCH DATE 2022

VS

A

AMD

RADEON

Radeon RX 6950 XT

CORE STATE Navi 21

VRAM 16 GB

CLOCK SPEED 2310 MHz

TDP 335 W

BUS WIDTH 256 bit

ARCHITECTURE RDNA 2.0

nm

PROCESS 7 nm

LAUNCH DATE 2022

PERFORMANCE BENCHMARKS

geekbench_opencl

12,876

175,410

geekbench_vulkan

14,748

164,748

3dmark_3dmark_steel_nomad_dx12

N/A

4,235

geekbench_metal

N/A

222,653

passmark_directx_10

N/A

164

passmark_directx_11

N/A

300

passmark_directx_12

N/A

114

passmark_directx_9

N/A

303

passmark_g2d

N/A

1,063

passmark_g3d

N/A

28,070

passmark_gpu_compute

N/A

14,199

DETAILED SPECIFICATIONS

SPECIFICATION

660M

RX 6950 XT

Core Specs

Shading Units

384

5,120 +1233.3%

Shaders

384

5,120 +1233.3%

TMUs

24

320 +1233.3%

ROPs

16

128 +700.0%

Compute Units

6

80 +1233.3%

Clocks

Base Clock

1500 MHz

1860 MHz

Boost Clock

1900 MHz

2310 MHz

Game Clock

—

2100 MHz

Memory Clock

System Shared

2250 MHz 18 Gbps effective

Memory

Memory Size

System Shared

16 GB

VRAM (MB)

—

16,384

Memory Type

System Shared

GDDR6

Memory Bus

System Shared

256 bit

Bandwidth

System Dependent

576.0 GB/s

Cache

L1 Cache

128 KB per Array

128 KB per Array

L2 Cache

2 MB

4 MB

L3 Cache

—

128 MB

L0 Cache

32 KB per WGP

32 KB per WGP

Performance

Pixel Rate

30.40 GPixel/s

295.7 GPixel/s

Texture Rate

45.60 GTexel/s

739.2 GTexel/s

FP32 (TFLOPS)

1,459.2 GFLOPS

23.65 TFLOPS

FP64 (TFLOPS)

91.20 GFLOPS (1:16)

1,478.4 GFLOPS (1:16)

FP16 (TFLOPS)

2.918 TFLOPS (2:1)

47.31 TFLOPS (2:1)

AI/RT

RT Cores

6

80 +1233.3%

Power

TDP

40 W

335 W

TDP (W)

40

335 +737.5%

Suggested PSU

—

700 W

Power Connectors

None

2x 8-pin

Architecture

Architecture

RDNA 2.0

RDNA 2.0

GPU Name

Rembrandt

Navi 21

Generation

Navi II IGP (Rembrandt Mobile)

Navi II (RX 6000)

Process Size

6 nm

7 nm

Transistors

13,100 million

26,800 million

Die Size

208 mm²

520 mm²

Foundry

TSMC

TSMC

Density

63.0M / mm²

51.5M / mm²

API Support

DirectX

12 Ultimate (12_2)

12 Ultimate (12_2)

OpenGL

4.6

4.6

Vulkan

1.4

1.4

OpenCL

2.0

2.1

Shader Model

6.8

6.8

Physical

Slot Width

IGP

Triple-slot

Length

—

267 mm 10.5 inches

Height

—

120 mm 4.7 inches

Outputs

Portable Device Dependent

1x HDMI 2.12x DisplayPort 1.4a

Bus Interface

PCIe 4.0 x8

PCIe 4.0 x16

Other

Launch Price

—

1,099 USD

Production

End-of-life

End-of-life

Predecessor

Vega II IGP

Navi

Successor

Navi III IGP

Navi III

View Radeon 660M Details View Radeon RX 6950 XT Details