AMD Radeon R9 270 vs AMD Radeon R9 255 OEM

VS

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 270 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 270 's Advantages

Larger VRAM bandwidth (179.2GB/s vs 73.60GB/s)

768 additional rendering cores

AMD Radeon R9 255 OEM 's Advantages

Boost Clock has increased by 1% (930MHz vs 925MHz)

Lower TDP (65W vs 150W)

Score

Benchmark

FP32 (float)

Radeon R9 270 +148%

2.368 TFLOPS

Radeon R9 255 OEM

0.952 TFLOPS

Radeon R9 270

VS

Radeon R9 255 OEM

Graphics Card

Nov 2013

Release Date

Dec 2013

Volcanic Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

900 MHz

Base Clock

900 MHz

925 MHz

Boost Clock

930 MHz

1400 MHz

Memory Clock

1150 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

179.2GB/s

Bandwidth

73.60GB/s

Render Config

-

SM Count

-

20

Compute Units

8

1280

Shading Units

512

80

TMUs

32

ROPs

16

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

Theoretical Performance

29.60 GPixel/s

Pixel Rate

14.88 GPixel/s

74.00 GTexel/s

Texture Rate

29.76 GTexel/s

-

FP16 (half)

-

2.368 TFLOPS

FP32 (float)

952.3 GFLOPS

148.0 GFLOPS

FP64 (double)

59.52 GFLOPS

Graphics Processor

Curacao

GPU Name

Cape Verde

Curacao PRO (215-0848000)

GPU Variant

Cape Verde PRX

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.8 billion

Transistors

1.5 billion

212 mm²

Die Size

123 mm²

Board Design

150W

TDP

65W

450 W

Suggested PSU

250 W

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

Outputs

No outputs

1x 6-pin

Power Connectors

1x 6-pin

Graphics Features

12 (11_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.2

OpenCL

1.2

Vulkan

1.2

-

CUDA

-

5.1

Shader Model

5.1

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