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

Radeon HD 8990 OEM

GeForce RTX 4090

Architecture

GCN 1.0 (2012−2020)

Ada Lovelace

GPU code name

Malta

AD102-300-A1

Market segment

Desktop

Release date

April 2013

September 2022

Interface

PCIe 3.0 x16

PCIe 4.0 x16

Supplementary power connectors

2x 8-pin

1x 16-pin

Boost clock speed

1000 MHz

2520 MHz

Core clock speed

950 MHz

2235 MHz

Floating-point performance

2x 4,096 gflops

Manufacturing process technology

28 nm

5 nm

Number of transistors

4,313 million

76,300 million

Pipelines / CUDA cores

2048

16384

Power consumption (TDP)

375 Watt

450 Watt

Texture fill rate

128.0

1,290

Memory type

GDDR5

GDDR6X

Maximum RAM amount

3 GB

24 GB

Memory bus width

384 Bit

Memory clock speed

6000 MHz

21000 MHz

Memory bandwidth

288.0 GB/s

1,008 GB/s

Shared memory

Display Connectors

1x DVI, 4x mini-DisplayPort

1x HDMI 2.1, 3x DisplayPort 1.4a

HDMI

DirectX

12 (11_1)

12 Ultimate (12_2)

CUDA

8.9

OpenCL

1.2

3.0

OpenGL

4.6

Shader Model

5.1

6.6

Vulkan

1.2.131

1.3