AMD Radeon R9 285 vs AMD Radeon R9 270

VS

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 285 and 2GB VRAM Radeon R9 270 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 285 's Advantages

Released 10 months late

512 additional rendering cores

AMD Radeon R9 270 's Advantages

Boost Clock925MHz

Larger VRAM bandwidth (179.2GB/s vs 176.0GB/s)

Lower TDP (150W vs 190W)

Score

Benchmark

FP32 (float)

Radeon R9 285 +38%

3.29 TFLOPS

Radeon R9 270

2.368 TFLOPS

Radeon R9 285

VS

Radeon R9 270

Graphics Card

Sep 2014

Release Date

Nov 2013

Volcanic Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

900 MHz

-

Boost Clock

925 MHz

1375 MHz

Memory Clock

1400 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

256bit

176.0GB/s

Bandwidth

179.2GB/s

Render Config

-

SM Count

-

28

Compute Units

20

1792

Shading Units

1280

112

TMUs

80

32

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

512 KB

Theoretical Performance

29.38 GPixel/s

Pixel Rate

29.60 GPixel/s

102.8 GTexel/s

Texture Rate

74.00 GTexel/s

3.290 TFLOPS

FP16 (half)

-

3.290 TFLOPS

FP32 (float)

2.368 TFLOPS

205.6 GFLOPS

FP64 (double)

148.0 GFLOPS

Graphics Processor

Tonga

GPU Name

Curacao

Tonga PRO (215-0851128)

GPU Variant

Curacao PRO (215-0848000)

GCN 3.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

5 billion

Transistors

2.8 billion

366 mm²

Die Size

212 mm²

Board Design

190W

TDP

150W

450 W

Suggested PSU

450 W

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

Outputs

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

2x 6-pin

Power Connectors

1x 6-pin

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

1.2

1.2.170

Vulkan

1.2

-

CUDA

-

6.5

Shader Model

5.1

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