GPU Comparison

A

AMD

RADEON

AMD Radeon RX 6600M

CORE STATE Navi 23

VRAM 8 GB

CLOCK SPEED 2416 MHz

TDP 100 W

BUS WIDTH 128 bit

ARCHITECTURE RDNA 2.0

nm

PROCESS 7 nm

LAUNCH DATE 2021

VS

NVIDIA

GEFORCE

GeForce GTX 660 Rev. 2

CORE STATE GK104

VRAM 2 GB

CLOCK SPEED 1032 MHz

TDP 140 W

BUS WIDTH 192 bit

ARCHITECTURE Kepler

nm

PROCESS 28 nm

LAUNCH DATE 2014

PERFORMANCE BENCHMARKS

3dmark_3dmark_steel_nomad_dx12

1,495

N/A

geekbench_metal

94,242

N/A

geekbench_opencl

66,290

N/A

geekbench_vulkan

73,740

N/A

passmark_directx_10

87

N/A

passmark_directx_11

136

N/A

passmark_directx_12

52

N/A

passmark_directx_9

184

N/A

passmark_g2d

728

N/A

passmark_g3d

13,929

N/A

passmark_gpu_compute

5,646

N/A

DETAILED SPECIFICATIONS

SPECIFICATION

RX 6600M

GTX 660 Rev. 2

Core Specs

Shading Units

1,792

960 -46.4%

Shaders

1,792

960 -46.4%

TMUs

112

80 -28.6%

ROPs

64

24 -62.5%

Compute Units

28

—

Clocks

Base Clock

2068 MHz

980 MHz

Boost Clock

2416 MHz

1032 MHz

Game Clock

2177 MHz

—

Memory Clock

1750 MHz 14 Gbps effective

1502 MHz 6 Gbps effective

Memory

Memory Size

8 GB

2 GB

VRAM (MB)

8,192

2,048 -75.0%

Memory Type

GDDR6

GDDR5

Memory Bus

128 bit

192 bit

Bandwidth

224.0 GB/s

144.2 GB/s

Cache

L1 Cache

128 KB per Array

16 KB (per SMX)

L2 Cache

2 MB

384 KB

L3 Cache

32 MB

—

L0 Cache

32 KB per WGP

—

Performance

Pixel Rate

154.6 GPixel/s

20.64 GPixel/s

Texture Rate

270.6 GTexel/s

82.56 GTexel/s

FP32 (TFLOPS)

8.659 TFLOPS

1.981 TFLOPS

FP64 (TFLOPS)

541.2 GFLOPS (1:16)

82.56 GFLOPS (1:24)

FP16 (TFLOPS)

17.32 TFLOPS (2:1)

—

AI/RT

RT Cores

28

—

Power

TDP

100 W

140 W

TDP (W)

100

140 +40.0%

Suggested PSU

—

300 W

Power Connectors

None

1x 6-pin

Architecture

Architecture

RDNA 2.0

Kepler

GPU Name

Navi 23

GK104

Generation

Navi Mobile (RX 6000M)

GeForce 600

Process Size

7 nm

28 nm

Transistors

11,060 million

3,540 million

Die Size

237 mm²

294 mm²

Foundry

TSMC

TSMC

Density

46.7M / mm²

12.0M / mm²

API Support

DirectX

12 Ultimate (12_2)

12 (11_0)

OpenGL

4.6

4.6

Vulkan

1.4

1.2.175

OpenCL

2.1

3.0

CUDA

—

3.0

Shader Model

6.8

6.5 (5.1)

Physical

Slot Width

IGP

Dual-slot

Length

—

241 mm 9.5 inches

Outputs

Portable Device Dependent

2x DVI1x HDMI 1.4a1x DisplayPort 1.2

Bus Interface

PCIe 4.0 x8

PCIe 3.0 x16

Other

Production

End-of-life

End-of-life

Predecessor

Polaris Mobile

GeForce 500

Successor

—

GeForce 700

View Radeon RX 6600M Details View GeForce GTX 660 Rev. 2 Details