Radeon HD 8990 OEM and GeForce RTX 4090 Max-Q - video card comparison

Radeon HD 8990 OEM

GeForce RTX 4090 Max-Q

Architecture

GCN 1.0 (2012−2020)

Ada Lovelace

GPU code name

Malta

AD103

Market segment

Desktop

Release date

April 2013

January 2023

Interface

PCIe 3.0 x16

PCIe 4.0 x16

Supplementary power connectors

2x 8-pin

None

Boost clock speed

1000 MHz

1455 MHz

Core clock speed

950 MHz

Floating-point performance

2x 4,096 gflops

Manufacturing process technology

28 nm

4 nm

Number of transistors

4,313 million

45,900 million

Pipelines / CUDA cores

2048

9728

Power consumption (TDP)

375 Watt

80 Watt

Texture fill rate

128.0

442.3

Memory type

GDDR5

GDDR6

Maximum RAM amount

3 GB

16 GB

Memory bus width

384 Bit

256 Bit

Memory clock speed

6000 MHz

14 GB/s

Memory bandwidth

288.0 GB/s

448.0 GB/s

Display Connectors

1x DVI, 4x mini-DisplayPort

Portable Device Dependent

DirectX

12 (11_1)

12 Ultimate (12_2)

CUDA

8.9

OpenCL

1.2

3.0

OpenGL

4.6

Shader Model

5.1

6.7

Vulkan

1.2.131

1.3