AMD Radeon R9 390 vs NVIDIA RTX A400

VS

AMD Radeon R9 390

NVIDIA RTX A400

We compared two Desktop platform GPUs: 8GB VRAM Radeon R9 390 and 4GB VRAM RTX A400 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 390 's Advantages

More VRAM (8GB vs 4GB)

Larger VRAM bandwidth (384.0GB/s vs 96.00GB/s)

1792 additional rendering cores

NVIDIA RTX A400 's Advantages

Released 8 years and 10 months late

Boost Clock1762MHz

Lower TDP (50W vs 275W)

Score

Benchmark

FP32 (float)

Radeon R9 390 +89%

5.12 TFLOPS

RTX A400

2.706 TFLOPS

Radeon R9 390

VS

RTX A400

Graphics Card

Jun 2015

Release Date

Apr 2024

Pirate Islands

Generation

Quadro Ampere(Ax000)

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x8

Clock Speeds

-

Base Clock

1417 MHz

-

Boost Clock

1762 MHz

1500 MHz

Memory Clock

1500 MHz

Memory

8GB

Memory Size

4GB

GDDR5

Memory Type

GDDR6

512bit

Memory Bus

64bit

384.0GB/s

Bandwidth

96.00GB/s

Render Config

40

Compute Units

-

SM Count

6

2560

Shading Units

768

160

TMUs

24

64

ROPs

16

-

Tensor Cores

24

-

RT Cores

6

16 KB (per CU)

L1 Cache

128 KB (per SM)

1024 KB

L2 Cache

2 MB

-

Theoretical Performance

64.00 GPixel/s

Pixel Rate

28.19 GPixel/s

160.0 GTexel/s

Texture Rate

42.29 GTexel/s

-

FP16 (half)

2.706 TFLOPS

5.120 TFLOPS

FP32 (float)

2.706 TFLOPS

640.0 GFLOPS

FP64 (double)

42.29 GFLOPS

Board Design

275W

TDP

50W

600 W

Suggested PSU

250 W

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

Outputs

4x mini-DisplayPort 1.4a

1x 6-pin + 1x 8-pin

Power Connectors

None

Graphics Processor

Grenada

GPU Name

GA107

Grenada PRO (215-0880030)

GPU Variant

-

GCN 2.0

Architecture

Ampere

TSMC

Foundry

Samsung

28 nm

Process Size

8 nm

6.2 billion

Transistors

8.7 billion

438 mm²

Die Size

200 mm²

Graphics Features

12 (12_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.0

OpenCL

3.0

1.2

Vulkan

1.3

-

CUDA

8.6

6.3

Shader Model

6.8

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