AMD Radeon RX 7700 vs AMD Radeon R9 390X

VS

AMD Radeon RX 7700

AMD Radeon R9 390X

We compared two Desktop platform GPUs: 12GB VRAM Radeon RX 7700 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 7700 's Advantages

Boost Clock2600MHz

More VRAM (12GB vs 8GB)

Larger VRAM bandwidth (432.0GB/s vs 384.0GB/s)

256 additional rendering cores

Lower TDP (200W vs 275W)

Score

Benchmark

FP32 (float)

Radeon RX 7700 +440%

31.95 TFLOPS

Radeon R9 390X

5.914 TFLOPS

Radeon RX 7700

VS

Radeon R9 390X

Graphics Card

Unknown

Release Date

Jun 2015

Navi III

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1900 MHz

Base Clock

-

2600 MHz

Boost Clock

-

2250 MHz

Memory Clock

1500 MHz

Memory

12GB

Memory Size

8GB

GDDR6

Memory Type

GDDR5

192bit

Memory Bus

512bit

432.0GB/s

Bandwidth

384.0GB/s

Render Config

48

Compute Units

44

-

3072

Shading Units

2816

192

TMUs

176

96

ROPs

64

-

48

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

1024 KB

64 MB

L3 Cache

-

Theoretical Performance

249.6 GPixel/s

Pixel Rate

67.20 GPixel/s

499.2 GTexel/s

Texture Rate

184.8 GTexel/s

63.90 TFLOPS

FP16 (half)

-

31.95 TFLOPS

FP32 (float)

5.914 TFLOPS

998.4 GFLOPS

FP64 (double)

739.2 GFLOPS

Board Design

200W

TDP

275W

550 W

Suggested PSU

600 W

1x HDMI 2.1a 2x DisplayPort 2.1 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 Processor

Navi 32

GPU Name

Grenada

Navi 32

GPU Variant

Grenada XT (215-0880004)

RDNA 3.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

5 nm

Process Size

28 nm

28.1 billion

Transistors

6.2 billion

346 mm²

Die Size

438 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.2

OpenCL

2.0

1.3

Vulkan

1.2

-

6.7

Shader Model

6.3

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