AMD Radeon R9 285X vs AMD Radeon R9 280X

VS

We compared two Desktop platform GPUs: 3GB VRAM Radeon R9 285X 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 285X 's Advantages

Lower TDP (200W vs 250W)

AMD Radeon R9 280X 's Advantages

Boost Clock1000MHz

Larger VRAM bandwidth (288.0GB/s vs 264.0GB/s)

Score

Benchmark

FP32 (float)

Radeon R9 285X

4.104 TFLOPS

Radeon R9 280X

4.096 TFLOPS

Radeon R9 285X

VS

Radeon R9 280X

Graphics Card

Unknown

Release Date

Oct 2013

Volcanic Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

850 MHz

-

Boost Clock

1000 MHz

1375 MHz

Memory Clock

1500 MHz

Memory

3GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

384bit

Memory Bus

384bit

264.0GB/s

Bandwidth

288.0GB/s

Render Config

-

SM Count

-

32

Compute Units

32

2048

Shading Units

2048

128

TMUs

128

32

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

768 KB

L2 Cache

768 KB

Theoretical Performance

32.06 GPixel/s

Pixel Rate

32.00 GPixel/s

128.3 GTexel/s

Texture Rate

128.0 GTexel/s

-

FP16 (half)

-

4.104 TFLOPS

FP32 (float)

4.096 TFLOPS

-

FP64 (double)

1024 GFLOPS

Graphics Processor

Tonga

GPU Name

Tahiti

Tonga XT (215-0851313)

GPU Variant

Tahiti XTL (215-0821065)

GCN 3.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

5 billion

Transistors

4.313 billion

366 mm²

Die Size

352 mm²

Board Design

200W

TDP

250W

550 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 + 1x 8-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.0

OpenCL

1.2

Vulkan

1.2

-

CUDA

-

6.3

Shader Model

5.1

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