AMD Radeon RX 455 OEM vs AMD Radeon R9 390

VS

AMD Radeon RX 455 OEM

AMD Radeon R9 390

We compared two Desktop platform GPUs: 2GB VRAM Radeon RX 455 OEM and 8GB VRAM Radeon R9 390 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 455 OEM 's Advantages

Released 1 years late

Lower TDP (100W vs 275W)

AMD Radeon R9 390 's Advantages

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (384.0GB/s vs 104.0GB/s)

1792 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 455 OEM

1.613 TFLOPS

Radeon R9 390 +217%

5.12 TFLOPS

Radeon RX 455 OEM

VS

Radeon R9 390

Graphics Card

Jun 2016

Release Date

Jun 2015

Arctic Islands

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1625 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

512bit

104.0GB/s

Bandwidth

384.0GB/s

Render Config

12

Compute Units

40

-

768

Shading Units

2560

48

TMUs

160

16

ROPs

64

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

1024 KB

-

Theoretical Performance

16.80 GPixel/s

Pixel Rate

64.00 GPixel/s

50.40 GTexel/s

Texture Rate

160.0 GTexel/s

-

1.613 TFLOPS

FP32 (float)

5.120 TFLOPS

100.8 GFLOPS

FP64 (double)

640.0 GFLOPS

Board Design

100W

TDP

275W

300 W

Suggested PSU

600 W

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

Outputs

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

1x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Tobago

GPU Name

Grenada

Tobago PRO (215-0875010)

GPU Variant

Grenada PRO (215-0880030)

GCN 2.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.08 billion

Transistors

6.2 billion

160 mm²

Die Size

438 mm²

Graphics Features

12 (12_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.0

OpenCL

2.0

1.2

Vulkan

1.2

-

6.3

Shader Model

6.3

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