AMD Radeon RX 6700 vs AMD Radeon R9 390X

VS

We compared two Desktop platform GPUs: 10GB VRAM Radeon RX 6700 and 8GB VRAM Radeon R9 390X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6700 's Advantages

Released 6 years late

Boost Clock2450MHz

More VRAM (10GB vs 8GB)

Lower TDP (175W vs 275W)

AMD Radeon R9 390X 's Advantages

Larger VRAM bandwidth (384.0GB/s vs 320.0GB/s)

512 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6700 +90%

11.29 TFLOPS

Radeon R9 390X

5.914 TFLOPS

3DMark Time Spy

Radeon RX 6700 +162%

11147

Radeon R9 390X

4245

Radeon RX 6700

VS

Radeon R9 390X

Graphics Card

Jun 2021

Release Date

Jun 2015

Navi II

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1941 MHz

Base Clock

-

2450 MHz

Boost Clock

-

2000 MHz

Memory Clock

1500 MHz

Memory

10GB

Memory Size

8GB

GDDR6

Memory Type

GDDR5

160bit

Memory Bus

512bit

320.0GB/s

Bandwidth

384.0GB/s

Render Config

-

SM Count

-

36

Compute Units

44

2304

Shading Units

2816

144

TMUs

176

64

ROPs

64

-

Tensor Cores

-

36

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

3 MB

L2 Cache

1024 KB

Theoretical Performance

156.8 GPixel/s

Pixel Rate

67.20 GPixel/s

352.8 GTexel/s

Texture Rate

184.8 GTexel/s

22.58 TFLOPS

FP16 (half)

-

11.29 TFLOPS

FP32 (float)

5.914 TFLOPS

705.6 GFLOPS

FP64 (double)

739.2 GFLOPS

Graphics Processor

Navi 22

GPU Name

Grenada

Navi 22 XTL

GPU Variant

Grenada XT (215-0880004)

RDNA 2.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

17.2 billion

Transistors

6.2 billion

335 mm²

Die Size

438 mm²

Board Design

175W

TDP

275W

450 W

Suggested PSU

600 W

1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C

Outputs

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

1x 8-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.1

OpenCL

2.0

1.3

Vulkan

1.2

-

CUDA

-

6.5

Shader Model

6.3

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