AMD Radeon RX 455 OEM vs AMD Radeon R5 340X OEM

VS

AMD Radeon RX 455 OEM

AMD Radeon R5 340X OEM

We compared two Desktop platform GPUs: 2GB VRAM Radeon RX 455 OEM and 2GB VRAM Radeon R5 340X OEM 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 and 1 months late

Larger VRAM bandwidth (104.0GB/s vs 16.00GB/s)

384 additional rendering cores

AMD Radeon R5 340X OEM 's Advantages

Lower TDP (65W vs 100W)

Score

Benchmark

FP32 (float)

Radeon RX 455 OEM +133%

1.613 TFLOPS

Radeon R5 340X OEM

0.691 TFLOPS

Radeon RX 455 OEM

VS

Radeon R5 340X OEM

Graphics Card

Jun 2016

Release Date

May 2015

Arctic Islands

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

-

1625 MHz

Memory Clock

1000 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

64bit

104.0GB/s

Bandwidth

16.00GB/s

Render Config

12

Compute Units

6

-

768

Shading Units

384

48

TMUs

24

16

ROPs

8

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

128 KB

-

Theoretical Performance

16.80 GPixel/s

Pixel Rate

7.200 GPixel/s

50.40 GTexel/s

Texture Rate

21.60 GTexel/s

-

1.613 TFLOPS

FP32 (float)

691.2 GFLOPS

100.8 GFLOPS

FP64 (double)

43.20 GFLOPS

Board Design

100W

TDP

65W

300 W

Suggested PSU

250 W

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

Outputs

1x DVI 1x DisplayPort 1.2

1x 6-pin

Power Connectors

None

Graphics Processor

Tobago

GPU Name

Oland

Tobago PRO (215-0875010)

GPU Variant

Oland XT (215-0837000)

GCN 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.08 billion

Transistors

0.95 billion

160 mm²

Die Size

77 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.0

OpenCL

1.2

Vulkan

1.2

-

6.3

Shader Model

5.1

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