NVIDIA GeForce RTX 3090 vs AMD Radeon R9 390X

VS

NVIDIA GeForce RTX 3090

AMD Radeon R9 390X

We compared two Desktop platform GPUs: 24GB VRAM GeForce RTX 3090 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 3090 's Advantages

Released 5 years and 3 months late

Boost Clock1695MHz

More VRAM (24GB vs 8GB)

Larger VRAM bandwidth (936.2GB/s vs 384.0GB/s)

7680 additional rendering cores

AMD Radeon R9 390X 's Advantages

Lower TDP (275W vs 350W)

Score

Benchmark

FP32 (float)

GeForce RTX 3090 +501%

35.58 TFLOPS

Radeon R9 390X

5.914 TFLOPS

3DMark Time Spy

GeForce RTX 3090 +369%

19948

Radeon R9 390X

4245

GeForce RTX 3090

VS

Radeon R9 390X

Graphics Card

Sep 2020

Release Date

Jun 2015

GeForce 30

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1395 MHz

Base Clock

-

1695 MHz

Boost Clock

-

1219 MHz

Memory Clock

1500 MHz

Memory

24GB

Memory Size

8GB

GDDR6X

Memory Type

GDDR5

384bit

Memory Bus

512bit

936.2GB/s

Bandwidth

384.0GB/s

Render Config

-

Compute Units

44

82

SM Count

-

10496

Shading Units

2816

328

TMUs

176

112

ROPs

64

328

Tensor Cores

-

82

RT Cores

-

128 KB (per SM)

L1 Cache

16 KB (per CU)

6 MB

L2 Cache

1024 KB

-

Theoretical Performance

189.8 GPixel/s

Pixel Rate

67.20 GPixel/s

556.0 GTexel/s

Texture Rate

184.8 GTexel/s

35.58 TFLOPS

FP16 (half)

-

35.58 TFLOPS

FP32 (float)

5.914 TFLOPS

556.0 GFLOPS

FP64 (double)

739.2 GFLOPS

Board Design

350W

TDP

275W

750 W

Suggested PSU

600 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

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

1x 12-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

GA102

GPU Name

Grenada

GA102-300-A1

GPU Variant

Grenada XT (215-0880004)

Ampere

Architecture

GCN 2.0

Samsung

Foundry

TSMC

8 nm

Process Size

28 nm

28.3 billion

Transistors

6.2 billion

628 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

8.6

CUDA

-

6.6

Shader Model

6.3

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