NVIDIA GeForce RTX 4090 vs AMD Radeon R9 390X

VS

NVIDIA GeForce RTX 4090

AMD Radeon R9 390X

We compared two Desktop platform GPUs: 24GB VRAM GeForce RTX 4090 and 8GB VRAM Radeon R9 390X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce RTX 4090 's Advantages

Released 7 years and 3 months late

Boost Clock2520MHz

More VRAM (24GB vs 8GB)

Larger VRAM bandwidth (1.01TB/s vs 384.0GB/s)

13568 additional rendering cores

AMD Radeon R9 390X 's Advantages

Lower TDP (275W vs 450W)

Score

Benchmark

FP32 (float)

GeForce RTX 4090 +1296%

82.58 TFLOPS

Radeon R9 390X

5.914 TFLOPS

3DMark Time Spy

GeForce RTX 4090 +759%

36499

Radeon R9 390X

4245

GeForce RTX 4090

VS

Radeon R9 390X

Graphics Card

Sep 2022

Release Date

Jun 2015

GeForce 40

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

2235 MHz

Base Clock

-

2520 MHz

Boost Clock

-

1313 MHz

Memory Clock

1500 MHz

Memory

24GB

Memory Size

8GB

GDDR6X

Memory Type

GDDR5

384bit

Memory Bus

512bit

1.01TB/s

Bandwidth

384.0GB/s

Render Config

-

Compute Units

44

128

SM Count

-

16384

Shading Units

2816

512

TMUs

176

ROPs

64

512

Tensor Cores

-

128

RT Cores

-

128 KB (per SM)

L1 Cache

16 KB (per CU)

72 MB

L2 Cache

1024 KB

-

Theoretical Performance

443.5 GPixel/s

Pixel Rate

67.20 GPixel/s

1290 GTexel/s

Texture Rate

184.8 GTexel/s

82.58 TFLOPS

FP16 (half)

-

82.58 TFLOPS

FP32 (float)

5.914 TFLOPS

1290 GFLOPS

FP64 (double)

739.2 GFLOPS

Board Design

450W

TDP

275W

850 W

Suggested PSU

600 W

1x HDMI 2.13x DisplayPort 1.4a

Outputs

2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

1x 16-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

AD102

GPU Name

Grenada

AD102-300-A1

GPU Variant

Grenada XT (215-0880004)

Ada Lovelace

Architecture

GCN 2.0

TSMC

Foundry

TSMC

5 nm

Process Size

28 nm

76.3 billion

Transistors

6.2 billion

609 mm²

Die Size

438 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (12_0)

4.6

OpenGL

4.6

3.0

OpenCL

2.0

1.3

Vulkan

1.2

8.9

CUDA

-

6.8

Shader Model

6.3

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