ASUS STRIX R9 390 DirectCU III OC

STRIX-R9390-DC3OC-8GD5-GAMING

Graphics Processor

Grenada

Cores

2560

TMUs

160

ROPs

Memory Size

8 GB

Memory Type

GDDR5

Bus Width

512 bit

Graphics Processor

GPU Name: Grenada

GPU Variant: Grenada PRO
(215-0880030)

Architecture: GCN 2.0

Foundry: TSMC

Process Size: 28 nm

Transistors: 6,200 million

Die Size: 438 mm²

Graphics Card

Release Date: Jun 18th, 2015

Generation: Pirate Islands
(R9 300)

Predecessor: Volcanic Islands

Successor: Arctic Islands

Production: End-of-life

Bus Interface: PCIe 3.0 x16

Clock Speeds

GPU Clock: ~~1000 MHz~~
1050 MHz (+5%)

Memory Clock: 1500 MHz
6 Gbps effective

Memory

Memory Size: 8 GB

Memory Type: GDDR5

Memory Bus: 512 bit

Bandwidth: 384.0 GB/s

Render Config

Shading Units: 2560

TMUs: 160

ROPs: 64

Compute Units: 40

L1 Cache: 16 KB (per CU)

L2 Cache: 1024 KB

Theoretical Performance

Pixel Rate: ~~64.00 GPixel/s~~
67.20 GPixel/s

Texture Rate: ~~160.0 GTexel/s~~
168.0 GTexel/s

FP32 (float) performance: ~~5.120 TFLOPS~~
5.376 TFLOPS

FP64 (double) performance: ~~640.0 GFLOPS~~
672.0 GFLOPS (1:8)

Board Design

Slot Width: Dual-slot

Length: ~~275 mm~~
300 mm
~~10.8 inches~~
11.8 inches

TDP: 275 W

Suggested PSU: 600 W

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

Power Connectors: ~~1x 6-pin + 1x 8-pin~~
2x 8-pin

Board Number: C679

Graphics Features

DirectX: 12 (12_0)

OpenGL: 4.6

OpenCL: 2.0

Vulkan: 1.2

Shader Model: 6.3

Grenada GPU Notes

Architecture Codename: Volcanic Islands
Chip Variant: Hawaii
CLRX Version: GCN 1.1
Graphics/Compute: GFX7 (gfx702)
Display Core Engine: 8.5
Unified Video Decoder: 4.2
Video Compression Engine: 2.0

Other retail boards based on this design (14)

Name	GPU Clock	Memory Clock	Other Changes
ASUS R9 390 DirectCU II	1000 MHz	1500 MHz	287 mm/11.3 inches
ASUS STRIX R9 390 DirectCU III OC	1050 MHz	1500 MHz	300 mm/11.8 inches
Club 3D R9 390 royalQueen	1010 MHz	1500 MHz	305 mm/12 inches
GIGABYTE R9 390 G1 Gaming	1025 MHz	1500 MHz	234 mm/9.2 inches
HIS R9 390 IceQ X2 II OC	1020 MHz	1500 MHz	297 mm/11.7 inches
HIS R9 390 IceQ X2 OC	1020 MHz	1500 MHz	297 mm/11.7 inches
MSI R9 390 Gaming	1040 MHz	1525 MHz	277 mm/10.9 inches
PowerColor PCS+ R9 390	1010 MHz	1500 MHz	305 mm/12 inches
Sapphire Nitro R9 390	1010 MHz	1500 MHz	308 mm/12.1 inches, 1x DVI 1x HDMI 3x DisplayPort
Sapphire Nitro R9 390 with Back Plate	1040 MHz	1500 MHz	308 mm/12.1 inches, 1x DVI 1x HDMI 3x DisplayPort
VTX3D R9 390 Dual Fan	1000 MHz	1500 MHz	250 mm/9.8 inches
XFX R9 390 Double Dissipation	1000 MHz	1500 MHz	295 mm/11.6 inches
XFX R9 390 Double Dissipation	1015 MHz	1500 MHz	295 mm/11.6 inches
XFX R9 390 Double Dissipation Black	1050 MHz	1500 MHz	295 mm/11.6 inches