AMD Radeon R5 340X OEM vs AMD Radeon R9 285X

VS

AMD Radeon R5 340X OEM AMD Radeon R9 285X

We compared two Desktop platform GPUs: 2GB VRAM Radeon R5 340X OEM and 3GB VRAM Radeon R9 285X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R5 340X OEM 's Advantages

Lower TDP (65W vs 200W)

AMD Radeon R9 285X 's Advantages

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (264.0GB/s vs 16.00GB/s)

1664 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R5 340X OEM

0.691 TFLOPS

Radeon R9 285X +493%

4.104 TFLOPS

Radeon R5 340X OEM

VS

Radeon R9 285X

Graphics Card

May 2015

Release Date

Unknown

Pirate Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1000 MHz

Memory Clock

1375 MHz

Memory

2GB

Memory Size

3GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

384bit

16.00GB/s

Bandwidth

264.0GB/s

Render Config

-

SM Count

-

6

Compute Units

32

384

Shading Units

2048

24

TMUs

128

8

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

768 KB

Theoretical Performance

7.200 GPixel/s

Pixel Rate

32.06 GPixel/s

21.60 GTexel/s

Texture Rate

128.3 GTexel/s

-

FP16 (half)

-

691.2 GFLOPS

FP32 (float)

4.104 TFLOPS

43.20 GFLOPS

FP64 (double)

-

Graphics Processor

Oland

GPU Name

Tonga

Oland XT (215-0837000)

GPU Variant

Tonga XT (215-0851313)

GCN 1.0

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

0.95 billion

Transistors

5 billion

77 mm²

Die Size

366 mm²

Board Design

65W

TDP

200W

250 W

Suggested PSU

550 W

1x DVI 1x DisplayPort 1.2

Outputs

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

None

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Features

12 (11_1)

DirectX

12 (12_0)

4.6

OpenGL

4.6

1.2

OpenCL

2.0

1.2

Vulkan

1.2

-

CUDA

-

5.1

Shader Model

6.3

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