AMD Radeon R7 340 OEM vs AMD Radeon R9 280

VS

AMD Radeon R7 340 OEM

AMD Radeon R9 280

We compared two Desktop platform GPUs: 2GB VRAM Radeon R7 340 OEM and 3GB VRAM Radeon R9 280 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R7 340 OEM 's Advantages

Released 1 years and 2 months late

Lower TDP (50W vs 200W)

AMD Radeon R9 280 's Advantages

Boost Clock has increased by 20% (933MHz vs 780MHz)

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (240.0GB/s vs 64.00GB/s)

1408 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R7 340 OEM

0.599 TFLOPS

Radeon R9 280 +458%

3.344 TFLOPS

Radeon R7 340 OEM

VS

Radeon R9 280

Graphics Card

May 2015

Release Date

Mar 2014

Pirate Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

730 MHz

Base Clock

827 MHz

780 MHz

Boost Clock

933 MHz

1000 MHz

Memory Clock

1250 MHz

Memory

2GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

384bit

64.00GB/s

Bandwidth

240.0GB/s

Render Config

6

Compute Units

28

-

384

Shading Units

1792

24

TMUs

112

8

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

768 KB

-

Theoretical Performance

6.240 GPixel/s

Pixel Rate

29.86 GPixel/s

18.72 GTexel/s

Texture Rate

104.5 GTexel/s

-

599.0 GFLOPS

FP32 (float)

3.344 TFLOPS

37.44 GFLOPS

FP64 (double)

836.0 GFLOPS

Board Design

50W

TDP

200W

250 W

Suggested PSU

550 W

1x DVI 1x HDMI 1.4a 1x VGA

Outputs

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

None

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Oland

GPU Name

Tahiti

-

GPU Variant

Tahiti PRO3 (215-0821330)

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

0.95 billion

Transistors

4.313 billion

77 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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