AMD Radeon R9 290X2 vs AMD Radeon R9 285X

VS

AMD Radeon R9 290X2

AMD Radeon R9 285X

We compared two Desktop platform GPUs: 4GB VRAM Radeon R9 290X2 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 R9 290X2 's Advantages

More VRAM (4GB vs 3GB)

Larger VRAM bandwidth (345.6GB/s vs 264.0GB/s)

768 additional rendering cores

AMD Radeon R9 285X 's Advantages

Lower TDP (200W vs 580W)

Score

Benchmark

FP32 (float)

Radeon R9 290X2 +37%

5.632 TFLOPS

Radeon R9 285X

4.104 TFLOPS

Radeon R9 290X2

VS

Radeon R9 285X

Graphics Card

Jun 2014

Release Date

Unknown

Volcanic Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1350 MHz

Memory Clock

1375 MHz

Memory

4GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

512bit

Memory Bus

384bit

345.6GB/s

Bandwidth

264.0GB/s

Render Config

44

Compute Units

32

-

2816

Shading Units

2048

176

TMUs

128

64

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

768 KB

-

Theoretical Performance

64.00 GPixel/s

Pixel Rate

32.06 GPixel/s

176.0 GTexel/s

Texture Rate

128.3 GTexel/s

-

5.632 TFLOPS

FP32 (float)

4.104 TFLOPS

704.0 GFLOPS

FP64 (double)

-

Board Design

580W

TDP

200W

950 W

Suggested PSU

550 W

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

Outputs

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

4x 8-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Hawaii

GPU Name

Tonga

Hawaii XT (215-0852000)

GPU Variant

Tonga XT (215-0851313)

GCN 2.0

Architecture

GCN 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

6.2 billion

Transistors

5 billion

438 mm²

Die Size

366 mm²

Graphics Features

12 (12_0)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.0

OpenCL

2.0

1.2

Vulkan

1.2

-

6.3

Shader Model

6.3

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