AMD Radeon RX 6700 XT vs AMD Radeon R9 390X

VS

AMD Radeon RX 6700 XT AMD Radeon R9 390X

We compared two Desktop platform GPUs: 12GB VRAM Radeon RX 6700 XT 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 XT 's Advantages

Released 5 years and 9 months late

Boost Clock2581MHz

More VRAM (12GB vs 8GB)

Lower TDP (230W vs 275W)

AMD Radeon R9 390X 's Advantages

256 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 6700 XT +123%

13.21 TFLOPS

Radeon R9 390X

5.914 TFLOPS

3DMark Time Spy

Radeon RX 6700 XT +200%

12772

Radeon R9 390X

4245

Radeon RX 6700 XT

VS

Radeon R9 390X

Graphics Card

Mar 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

2321 MHz

Base Clock

-

2581 MHz

Boost Clock

-

2000 MHz

Memory Clock

1500 MHz

Memory

12GB

Memory Size

8GB

GDDR6

Memory Type

GDDR5

192bit

Memory Bus

512bit

384.0GB/s

Bandwidth

384.0GB/s

Render Config

-

SM Count

-

40

Compute Units

44

2560

Shading Units

2816

160

TMUs

176

64

ROPs

64

-

Tensor Cores

-

40

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

3 MB

L2 Cache

1024 KB

Theoretical Performance

165.2 GPixel/s

Pixel Rate

67.20 GPixel/s

413.0 GTexel/s

Texture Rate

184.8 GTexel/s

26.43 TFLOPS

FP16 (half)

-

13.21 TFLOPS

FP32 (float)

5.914 TFLOPS

825.9 GFLOPS

FP64 (double)

739.2 GFLOPS

Graphics Processor

Navi 22

GPU Name

Grenada

Navi 22 XT (215-127000006)

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

230W

TDP

275W

550 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 6-pin + 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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