Radeon HD 7770M and Radeon RX 6600 XT - video card comparison

Radeon HD 7770M

Radeon RX 6600 XT

Architecture

GCN (2011−2017)

Navi / RDNA2 (2020−2022)

GPU code name

Chelsea XT

Navi 23

Market segment

Laptop

Desktop

Release date

April 2012

July 2021

Interface

PCIe 2.0 x16

PCIe 4.0 x8

Supplementary power connectors

1x 8-pin

Boost clock speed

2589 MHz

Core clock speed

675 MHz

1968 MHz

Floating-point performance

691.2 gflops

Manufacturing process technology

28 nm

7 nm

Number of transistors

1,500 million

11,060 million

Pipelines / CUDA cores

512

2048

Power consumption (TDP)

32 Watt

160 (TGP) Watt

Texture fill rate

21.60

331.4

Memory type

GDDR5

GDDR6

Maximum RAM amount

1 GB

8 GB

Memory bus width

128 Bit

Memory clock speed

4000 MHz

16000 MHz

Memory bandwidth

64 GB/s

256.0 GB/s

Shared memory

Display Connectors

No outputs

1x HDMI, 2x DisplayPort

HDMI

DirectX

12 (11_1)

12.0 Ultimate (12_2)

OpenCL

1.2

2.1

OpenGL

4.6

Shader Model

5.1

6.5

Vulkan

1.2.131

1.2