AMD Radeon R9 280X2 vs AMD Radeon R9 255 OEM

VS

AMD Radeon R9 280X2

AMD Radeon R9 255 OEM

We compared two Desktop platform GPUs: 3GB VRAM Radeon R9 280X2 and 2GB VRAM Radeon R9 255 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 280X2 's Advantages

Boost Clock has increased by 8% (1000MHz vs 930MHz)

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (288.0GB/s vs 73.60GB/s)

1536 additional rendering cores

AMD Radeon R9 255 OEM 's Advantages

Lower TDP (65W vs 375W)

Score

Benchmark

FP32 (float)

Radeon R9 280X2 +330%

4.096 TFLOPS

Radeon R9 255 OEM

0.952 TFLOPS

Radeon R9 280X2

VS

Radeon R9 255 OEM

Graphics Card

Unknown

Release Date

Dec 2013

Volcanic Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

950 MHz

Base Clock

900 MHz

1000 MHz

Boost Clock

930 MHz

1500 MHz

Memory Clock

1150 MHz

Memory

3GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

128bit

288.0GB/s

Bandwidth

73.60GB/s

Render Config

32

Compute Units

8

-

2048

Shading Units

512

128

TMUs

32

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

768 KB

L2 Cache

256 KB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

14.88 GPixel/s

128.0 GTexel/s

Texture Rate

29.76 GTexel/s

-

4.096 TFLOPS

FP32 (float)

952.3 GFLOPS

1024 GFLOPS

FP64 (double)

59.52 GFLOPS

Board Design

375W

TDP

65W

750 W

Suggested PSU

250 W

6x mini-DisplayPort 1.2

Outputs

No outputs

3x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

Tahiti

GPU Name

Cape Verde

Tahiti XTL (215-0821065)

GPU Variant

Cape Verde PRX

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

4.313 billion

Transistors

1.5 billion

352 mm²

Die Size

123 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.2

OpenCL

1.2

Vulkan

1.2

-

5.1

Shader Model

5.1

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