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 6700 XT

CORE STATE Navi 22

VRAM 12 GB

CLOCK SPEED 2581 MHz

TDP 230 W

BUS WIDTH 192 bit

ARCHITECTURE RDNA 2.0

nm

PROCESS 7 nm

LAUNCH DATE 2021

PERFORMANCE BENCHMARKS

geekbench_opencl

12,876

100,730

geekbench_vulkan

14,748

108,032

3dmark_3dmark_steel_nomad_dx12

N/A

2,435

geekbench_metal

N/A

129,041

passmark_directx_10

N/A

124

passmark_directx_11

N/A

173

passmark_directx_12

N/A

77

passmark_directx_9

N/A

242

passmark_g2d

N/A

951

passmark_g3d

N/A

19,786

passmark_gpu_compute

N/A

9,336

DETAILED SPECIFICATIONS

SPECIFICATION

660M

RX 6700 XT

Core Specs

Shading Units

384

2,560 +566.7%

Shaders

384

2,560 +566.7%

TMUs

24

160 +566.7%

ROPs

16

64 +300.0%

Compute Units

6

40 +566.7%

Clocks

Base Clock

1500 MHz

2321 MHz

Boost Clock

1900 MHz

2581 MHz

Game Clock

—

2424 MHz

Memory Clock

System Shared

2000 MHz 16 Gbps effective

Memory

Memory Size

System Shared

12 GB

VRAM (MB)

—

12,288

Memory Type

System Shared

GDDR6

Memory Bus

System Shared

192 bit

Bandwidth

System Dependent

384.0 GB/s

Cache

L1 Cache

128 KB per Array

128 KB per Array

L2 Cache

2 MB

3 MB

L3 Cache

—

96 MB

L0 Cache

32 KB per WGP

32 KB per WGP

Performance

Pixel Rate

30.40 GPixel/s

165.2 GPixel/s

Texture Rate

45.60 GTexel/s

413.0 GTexel/s

FP32 (TFLOPS)

1,459.2 GFLOPS

13.21 TFLOPS

FP64 (TFLOPS)

91.20 GFLOPS (1:16)

825.9 GFLOPS (1:16)

FP16 (TFLOPS)

2.918 TFLOPS (2:1)

26.43 TFLOPS (2:1)

AI/RT

RT Cores

6

40 +566.7%

Power

TDP

40 W

230 W

TDP (W)

40

230 +475.0%

Suggested PSU

—

550 W

Power Connectors

None

1x 6-pin + 1x 8-pin

Architecture

Architecture

RDNA 2.0

RDNA 2.0

GPU Name

Rembrandt

Navi 22

Generation

Navi II IGP (Rembrandt Mobile)

Navi II (RX 6000)

Process Size

6 nm

7 nm

Transistors

13,100 million

17,200 million

Die Size

208 mm²

335 mm²

Foundry

TSMC

TSMC

Density

63.0M / mm²

51.3M / 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

Dual-slot

Length

—

267 mm 10.5 inches

Height

—

110 mm 4.3 inches

Outputs

Portable Device Dependent

1x HDMI 2.13x DisplayPort 1.4a

Bus Interface

PCIe 4.0 x8

PCIe 4.0 x16

Other

Launch Price

—

479 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 6700 XT Details