AMD Radeon R9 290X vs AMD Radeon R9 390X

VS

AMD Radeon R9 290X

AMD Radeon R9 390X

We compared two Desktop platform GPUs: 4GB VRAM Radeon R9 290X and 8GB VRAM Radeon R9 390X 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 290X

5.632 TFLOPS

Radeon R9 390X +5%

5.914 TFLOPS

3DMark Time Spy

Radeon R9 290X

3925

Radeon R9 390X +8%

4245

Radeon R9 290X

VS

Radeon R9 390X

Graphics Card

Oct 2013

Release Date

Jun 2015

Volcanic Islands

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

1500 MHz

Memory

4GB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

512bit

Memory Bus

512bit

320.0GB/s

Bandwidth

384.0GB/s

Render Config

44

Compute Units

44

-

2816

Shading Units

2816

176

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

67.20 GPixel/s

176.0 GTexel/s

Texture Rate

184.8 GTexel/s

-

5.632 TFLOPS

FP32 (float)

5.914 TFLOPS

704.0 GFLOPS

FP64 (double)

739.2 GFLOPS

Board Design

290W

TDP

275W

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 Processor

Hawaii

GPU Name

Grenada

Hawaii XT (215-0852000)

GPU Variant

Grenada XT (215-0880004)

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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