AMD Radeon R9 270 vs AMD Radeon R9 280X

VS

AMD Radeon R9 270

AMD Radeon R9 280X

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 270 and 3GB VRAM Radeon R9 280X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 270 's Advantages

Lower TDP (150W vs 250W)

AMD Radeon R9 280X 's Advantages

Boost Clock has increased by 8% (1000MHz vs 925MHz)

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (288.0GB/s vs 179.2GB/s)

768 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 270

2.368 TFLOPS

Radeon R9 280X +72%

4.096 TFLOPS

3DMark Time Spy

Radeon R9 270

1603

Radeon R9 280X +46%

2348

Radeon R9 270

VS

Radeon R9 280X

Graphics Card

Nov 2013

Release Date

Oct 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

850 MHz

925 MHz

Boost Clock

1000 MHz

1400 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

384bit

179.2GB/s

Bandwidth

288.0GB/s

Render Config

20

Compute Units

32

-

1280

Shading Units

2048

80

TMUs

128

32

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

768 KB

-

Theoretical Performance

29.60 GPixel/s

Pixel Rate

32.00 GPixel/s

74.00 GTexel/s

Texture Rate

128.0 GTexel/s

-

2.368 TFLOPS

FP32 (float)

4.096 TFLOPS

148.0 GFLOPS

FP64 (double)

1024 GFLOPS

Board Design

150W

TDP

250W

450 W

Suggested PSU

600 W

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

Outputs

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

1x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Curacao

GPU Name

Tahiti

Curacao PRO (215-0848000)

GPU Variant

Tahiti XTL (215-0821065)

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.8 billion

Transistors

4.313 billion

212 mm²

Die Size

352 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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