GPU Comparison

A

AMD

RADEON

AMD Radeon RX 6600S

CORE STATE Navi 23

VRAM 4 GB

CLOCK SPEED 2000 MHz

TDP 80 W

BUS WIDTH 128 bit

ARCHITECTURE RDNA 2.0

nm

PROCESS 7 nm

LAUNCH DATE 2022

VS

NVIDIA

GEFORCE

GeForce GTX 645 OEM

CORE STATE GK106S

VRAM 1024 MB

CLOCK SPEED —

TDP 65 W

BUS WIDTH 128 bit

ARCHITECTURE Kepler

nm

PROCESS 28 nm

LAUNCH DATE 2013

PERFORMANCE BENCHMARKS

geekbench_opencl

66,403

N/A

passmark_directx_10

81

N/A

passmark_directx_11

105

N/A

passmark_directx_12

56

N/A

passmark_directx_9

176

N/A

passmark_g2d

647

N/A

passmark_g3d

12,649

N/A

passmark_gpu_compute

4,879

N/A

DETAILED SPECIFICATIONS

SPECIFICATION

RX 6600S

GTX 645 OEM

Core Specs

Shading Units

1,792

576 -67.9%

Shaders

1,792

576 -67.9%

TMUs

112

48 -57.1%

ROPs

64

16 -75.0%

Compute Units

28

—

Clocks

Base Clock

1700 MHz

—

Boost Clock

2000 MHz

—

GPU Clock

—

824 MHz

Game Clock

1881 MHz

—

Memory Clock

1750 MHz 14 Gbps effective

1000 MHz 4 Gbps effective

Memory

Memory Size

4 GB

1024 MB

VRAM (MB)

4,096

1,024 -75.0%

Memory Type

GDDR6

GDDR5

Memory Bus

128 bit

128 bit

Bandwidth

224.0 GB/s

64.00 GB/s

Cache

L1 Cache

128 KB per Array

16 KB (per SMX)

L2 Cache

2 MB

256 KB

L3 Cache

32 MB

—

L0 Cache

32 KB per WGP

—

Performance

Pixel Rate

128.0 GPixel/s

9.888 GPixel/s

Texture Rate

224.0 GTexel/s

39.55 GTexel/s

FP32 (TFLOPS)

7.168 TFLOPS

949.2 GFLOPS

FP64 (TFLOPS)

448.0 GFLOPS (1:16)

39.55 GFLOPS (1:24)

FP16 (TFLOPS)

14.34 TFLOPS (2:1)

—

AI/RT

RT Cores

28

—

Power

TDP

80 W

65 W

TDP (W)

80

65 -18.8%

Suggested PSU

—

250 W

Power Connectors

None

None

Architecture

Architecture

RDNA 2.0

Kepler

GPU Name

Navi 23

GK106S

Generation

Navi Mobile (RX 6000M)

GeForce 600

Process Size

7 nm

28 nm

Transistors

11,060 million

2,540 million

Die Size

237 mm²

221 mm²

Foundry

TSMC

TSMC

Density

46.7M / mm²

11.5M / 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

Single-slot

Length

—

147 mm 5.8 inches

Outputs

Portable Device Dependent

1x 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 6600S Details View GeForce GTX 645 OEM Details