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 7800 XT

CORE STATE Navi 32

VRAM 16 GB

CLOCK SPEED 2430 MHz

TDP 263 W

BUS WIDTH 256 bit

ARCHITECTURE RDNA 3.0

nm

PROCESS 5 nm

LAUNCH DATE 2023

PERFORMANCE BENCHMARKS

geekbench_opencl

12,876

139,381

geekbench_vulkan

14,748

143,060

3dmark_3dmark_steel_nomad_dx12

N/A

4,157

passmark_directx_10

N/A

121

passmark_directx_11

N/A

249

passmark_directx_12

N/A

93

passmark_directx_9

N/A

304

passmark_g2d

N/A

1,177

passmark_g3d

N/A

24,176

passmark_gpu_compute

N/A

13,473

DETAILED SPECIFICATIONS

SPECIFICATION

660M

RX 7800 XT

Core Specs

Shading Units

384

3,840 +900.0%

Shaders

384

3,840 +900.0%

TMUs

24

240 +900.0%

ROPs

16

96 +500.0%

Compute Units

6

60 +900.0%

Clocks

Base Clock

1500 MHz

1295 MHz

Boost Clock

1900 MHz

2430 MHz

Game Clock

—

2124 MHz

Memory Clock

System Shared

2438 MHz 19.5 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

624.1 GB/s

Cache

L1 Cache

128 KB per Array

128 KB per Array

L2 Cache

2 MB

4 MB

L3 Cache

—

64 MB

L0 Cache

32 KB per WGP

32 KB per WGP

Performance

Pixel Rate

30.40 GPixel/s

233.3 GPixel/s

Texture Rate

45.60 GTexel/s

583.2 GTexel/s

FP32 (TFLOPS)

1,459.2 GFLOPS

37.32 TFLOPS

FP64 (TFLOPS)

91.20 GFLOPS (1:16)

1,166.4 GFLOPS (1:32)

FP16 (TFLOPS)

2.918 TFLOPS (2:1)

74.65 TFLOPS (2:1)

AI/RT

RT Cores

6

60 +900.0%

Matrix Cores

—

120

Power

TDP

40 W

263 W

TDP (W)

40

263 +557.5%

Suggested PSU

—

600 W

Power Connectors

None

2x 8-pin

Architecture

Architecture

RDNA 2.0

RDNA 3.0

GPU Name

Rembrandt

Navi 32

Codename

—

Wheat Nas

Generation

Navi II IGP (Rembrandt Mobile)

Navi III (RX 7000)

Process Size

6 nm

5 nm

Transistors

13,100 million

28,100 million

Die Size

208 mm²

346 mm²

Foundry

TSMC

TSMC

Density

63.0M / mm²

81.2M / 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

2.2

Shader Model

6.8

6.8

Physical

Slot Width

IGP

Dual-slot

Length

—

267 mm 10.5 inches

Height

—

111 mm 4.4 inches

Outputs

Portable Device Dependent

1x HDMI 2.1a3x DisplayPort 2.1

Bus Interface

PCIe 4.0 x8

PCIe 4.0 x16

Other

Launch Price

—

499 USD

Production

End-of-life

Active

Predecessor

Vega II IGP

Navi II

Successor

Navi III IGP

Navi IV

View Radeon 660M Details View Radeon RX 7800 XT Details