AMD Radeon R9 390X vs AMD Radeon R9 290X

VS

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

Main Differences

AMD Radeon R9 390X 's Advantages

Released 1 years and 8 months late

More VRAM (8GB vs 4GB)

Larger VRAM bandwidth (384.0GB/s vs 320.0GB/s)

Lower TDP (275W vs 290W)

Score

Benchmark

FP32 (float)

Radeon R9 390X +5%

5.914 TFLOPS

Radeon R9 290X

5.632 TFLOPS

3DMark Time Spy

Radeon R9 390X +8%

4245

Radeon R9 290X

3929

Radeon R9 390X

VS

Radeon R9 290X

Graphics Card

Jun 2015

Release Date

Oct 2013

Pirate Islands

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

1500 MHz

Memory Clock

1250 MHz

Memory

8GB

Memory Size

4GB

GDDR5

Memory Type

GDDR5

512bit

Memory Bus

512bit

384.0GB/s

Bandwidth

320.0GB/s

Render Config

-

SM Count

-

44

Compute Units

44

2816

Shading Units

2816

176

TMUs

176

64

ROPs

64

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

1024 KB

Theoretical Performance

67.20 GPixel/s

Pixel Rate

64.00 GPixel/s

184.8 GTexel/s

Texture Rate

176.0 GTexel/s

-

FP16 (half)

-

5.914 TFLOPS

FP32 (float)

5.632 TFLOPS

739.2 GFLOPS

FP64 (double)

704.0 GFLOPS

Graphics Processor

Grenada

GPU Name

Hawaii

Grenada XT (215-0880004)

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

Board Design

275W

TDP

290W

600 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 (12_0)

4.6

OpenGL

4.6

2.0

OpenCL

2.0

1.2

Vulkan

1.2

-

CUDA

-

6.3

Shader Model

6.3

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