AMD Radeon R9 390X vs AMD Radeon RX 7900 GRE

VS

AMD Radeon R9 390X

AMD Radeon RX 7900 GRE

We compared two Desktop platform GPUs: 8GB VRAM Radeon R9 390X and 16GB VRAM Radeon RX 7900 GRE to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7900 GRE 's Advantages

Released 8 years and 1 months late

Boost Clock2245MHz

More VRAM (16GB vs 8GB)

Larger VRAM bandwidth (576.0GB/s vs 384.0GB/s)

2304 additional rendering cores

Lower TDP (260W vs 275W)

Score

Benchmark

FP32 (float)

Radeon R9 390X

5.914 TFLOPS

Radeon RX 7900 GRE +677%

45.98 TFLOPS

3DMark Time Spy

Radeon R9 390X

4245

Radeon RX 7900 GRE +426%

22344

Radeon R9 390X

VS

Radeon RX 7900 GRE

Graphics Card

Jun 2015

Release Date

Jul 2023

Pirate Islands

Generation

Navi III

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1287 MHz

-

Boost Clock

2245 MHz

1500 MHz

Memory Clock

2250 MHz

Memory

8GB

Memory Size

16GB

GDDR5

Memory Type

GDDR6

512bit

Memory Bus

256bit

384.0GB/s

Bandwidth

576.0GB/s

Render Config

44

Compute Units

80

-

2816

Shading Units

5120

176

TMUs

320

64

ROPs

160

-

RT Cores

80

16 KB (per CU)

L1 Cache

256 KB per Array

1024 KB

L2 Cache

6 MB

-

L3 Cache

64 MB

Theoretical Performance

67.20 GPixel/s

Pixel Rate

359.2 GPixel/s

184.8 GTexel/s

Texture Rate

718.4 GTexel/s

-

FP16 (half)

91.96 TFLOPS

5.914 TFLOPS

FP32 (float)

45.98 TFLOPS

739.2 GFLOPS

FP64 (double)

1437 GFLOPS

Board Design

275W

TDP

260W

600 W

Suggested PSU

600 W

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

Outputs

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

1x 6-pin + 1x 8-pin

Power Connectors

2x 8-pin

Graphics Processor

Grenada

GPU Name

Navi 31

Grenada XT (215-0880004)

GPU Variant

Navi 31 XL (215-145000206)

GCN 2.0

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

5 nm

6.2 billion

Transistors

57.7 billion

438 mm²

Die Size

529 mm²

Graphics Features

12 (12_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.0

OpenCL

2.2

1.2

Vulkan

1.3

-

6.3

Shader Model

6.7

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