AMD Radeon R9 390 vs AMD Radeon R9 290X2

VS

AMD Radeon R9 390

AMD Radeon R9 290X2

We compared two Desktop platform GPUs: 8GB VRAM Radeon R9 390 and 4GB VRAM Radeon R9 290X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 390 's Advantages

Released 1 years late

More VRAM (8GB vs 4GB)

Larger VRAM bandwidth (384.0GB/s vs 345.6GB/s)

Lower TDP (275W vs 580W)

AMD Radeon R9 290X2 's Advantages

256 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 390

5.12 TFLOPS

Radeon R9 290X2 +10%

5.632 TFLOPS

Radeon R9 390

VS

Radeon R9 290X2

Graphics Card

Jun 2015

Release Date

Jun 2014

Pirate Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1500 MHz

Memory Clock

1350 MHz

Memory

8GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

512bit

Memory Bus

512bit

384.0GB/s

Bandwidth

345.6GB/s

Render Config

40

Compute Units

44

-

2560

Shading Units

2816

160

TMUs

176

64

ROPs

64

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

1024 KB

-

Theoretical Performance

64.00 GPixel/s

Pixel Rate

64.00 GPixel/s

160.0 GTexel/s

Texture Rate

176.0 GTexel/s

-

5.120 TFLOPS

FP32 (float)

5.632 TFLOPS

640.0 GFLOPS

FP64 (double)

704.0 GFLOPS

Board Design

275W

TDP

580W

600 W

Suggested PSU

950 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

4x 8-pin

Graphics Processor

Grenada

GPU Name

Hawaii

Grenada PRO (215-0880030)

GPU Variant

Hawaii XT (215-0852000)

GCN 2.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

6.2 billion

Transistors

6.2 billion

438 mm²

Die Size

438 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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