AMD Radeon R9 255 OEM vs AMD Radeon Pro Duo

VS

AMD Radeon R9 255 OEM

AMD Radeon Pro Duo

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 255 OEM and 4GB VRAM Radeon Pro Duo to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 255 OEM 's Advantages

Boost Clock930MHz

Lower TDP (65W vs 350W)

AMD Radeon Pro Duo 's Advantages

Released 2 years and 4 months late

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (512.0GB/s vs 73.60GB/s)

3584 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 255 OEM

0.952 TFLOPS

Radeon Pro Duo +760%

8.192 TFLOPS

Radeon R9 255 OEM

VS

Radeon Pro Duo

Graphics Card

Dec 2013

Release Date

Apr 2016

Volcanic Islands

Generation

Radeon Pro

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

900 MHz

Base Clock

-

930 MHz

Boost Clock

-

1150 MHz

Memory Clock

500 MHz

Memory

2GB

Memory Size

4GB

GDDR5

Memory Type

HBM

128bit

Memory Bus

4096bit

73.60GB/s

Bandwidth

512.0GB/s

Render Config

8

Compute Units

64

-

512

Shading Units

4096

32

TMUs

256

16

ROPs

64

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

2 MB

-

Theoretical Performance

14.88 GPixel/s

Pixel Rate

64.00 GPixel/s

29.76 GTexel/s

Texture Rate

256.0 GTexel/s

-

FP16 (half)

8.192 TFLOPS

952.3 GFLOPS

FP32 (float)

8.192 TFLOPS

59.52 GFLOPS

FP64 (double)

512.0 GFLOPS

Board Design

65W

TDP

350W

250 W

Suggested PSU

750 W

No outputs

Outputs

1x HDMI 1.4a 3x DisplayPort 1.2

1x 6-pin

Power Connectors

3x 8-pin

Graphics Processor

Cape Verde

GPU Name

Capsaicin

Cape Verde PRX

GPU Variant

Capsaicin XT

GCN 1.0

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.5 billion

Transistors

8.9 billion

123 mm²

Die Size

596 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.0

1.2

Vulkan

1.2

-

5.1

Shader Model

6.0

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