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AMD Radeon R9 390X

Grenada
Graphics Processor
2816
Cores
176
TMUs
64
ROPs
8192 MB
Memory Size
GDDR5
Memory Type
512 bit
Bus Width
AMD Radeon R9 390X Photo AMD Grenada Photo
The Radeon R9 390X is a high-end graphics card by AMD, launched in June 2015. Built on the 28 nm process, and based on the Grenada graphics processor, in its Grenada XT variant, the card supports DirectX 12.0. The Grenada graphics processor is a large chip with a die area of 438 mm² and 6,200 million transistors. It features 2816 shading units, 176 texture mapping units and 64 ROPs. AMD has placed 8,192 MB GDDR5 memory on the card, which are connected using a 512-bit memory interface. The GPU is operating at a frequency of 1050 MHz, memory is running at 1500 MHz.
Being a dual-slot card, the AMD Radeon R9 390X draws power from 1x 6-pin + 1x 8-pin power connectors, with power draw rated at 275 W maximum. Display outputs include: 2x DVI, 1x HDMI, 1x DisplayPort. Radeon R9 390X is connected to the rest of the system using a PCI-Express 3.0 x16 interface. The card measures 275 mm in length, and features a dual-slot cooling solution. Its price at launch was 429 US Dollars.

Graphics Processor

GPU Name
Grenada
GPU Variant
Grenada XT
(215-0880004)
Architecture
GCN 2.0
Process Size
28 nm
Transistors
6,200 million
Die Size
438 mm²

Graphics Card

Release Date
Jun 18th, 2015
Generation
Pirate Islands
(R9 300)
Production
Active
Launch Price
429 USD
Bus Interface
PCIe 3.0 x16

Relative Performance

2%
3%
3%
4%
5%
5%
7%
9%
9%
10%
10%
10%
12%
13%
13%
14%
14%
15%
16%
17%
17%
18%
18%
21%
21%
21%
22%
22%
22%
22%
23%
25%
25%
26%
26%
26%
27%
27%
27%
27%
29%
29%
31%
32%
32%
33%
33%
35%
37%
38%
38%
39%
39%
41%
41%
41%
42%
44%
45%
46%
46%
46%
46%
49%
50%
51%
52%
52%
52%
53%
53%
54%
55%
59%
61%
62%
63%
63%
64%
66%
67%
69%
70%
71%
71%
79%
87%
88%
94%
95%
96%
97%
98%
99%
100%
Radeon R9 390X
100%
101%
102%
107%
109%
111%
111%
122%
124%
126%
136%
149%
154%
166%
166%
175%
205%
210%
229%
261%
Based on TPU review data: "Performance Summary" at 1920x1080

Clock Speeds

GPU Clock
1050 MHz
Memory Clock
1500 MHz
6000 MHz effective

Memory

Memory Size
8192 MB
Memory Type
GDDR5
Memory Bus
512 bit
Bandwidth
384.0 GB/s

Render Config

Shading Units
2816
TMUs
176
ROPs
64
Compute Units
44

Theoretical Performance

Pixel Rate
67.20 GPixel/s
Texture Rate
184.8 GTexel/s
FP32 (float) performance
5,914 GFLOPS
FP64 (double) performance
739.2 GFLOPS (1:8)

Board Design

Slot Width
Dual-slot
Length
10.83 inches
275 mm
TDP
275 W
Outputs
2x DVI
1x HDMI
1x DisplayPort
Power Connectors
1x 6-pin + 1x 8-pin
Board Number
C671,
C679

Graphics Features

DirectX
12.0 (12_0)
OpenGL
4.5
OpenCL
2.0
Vulkan
1.1.82
Shader Model
6.0

Grenada GPU Notes

Chip Variant: Hawaii
Graphics/Compute: GFX7 (gfx702)
Display Core Engine: 8.5
Unified Video Decoder: 4.2
Video Compression Engine: 2.0
ROCm Support

Retail boards based on this design (16)

Name GPU Clock Memory Clock Other Changes
ASUS R9 390X DirectCU II 1050 MHz 1500 MHz 11.3 inches/287 mm
ASUS STRIX R9 390X DirectCU III OC 1070 MHz 1500 MHz 11.8 inches/300 mm
Club 3D R9 390X royalQueen 1060 MHz 1500 MHz 12 inches/305 mm
GIGABYTE R9 390X G1 Gaming 1060 MHz 1500 MHz 9.57 inches/243 mm, 1x DVI 1x HDMI 3x DisplayPort
GIGABYTE R9 390X WindForce 2X 1050 MHz 1500 MHz 9.57 inches/243 mm, 1x DVI 1x HDMI 3x DisplayPort
HIS R9 390X IceQ X2 1050 MHz 1500 MHz 11.7 inches/297 mm
HIS R9 390X IceQ X2 II 1060 MHz 1500 MHz 11.7 inches/297 mm
HIS R9 390X IceQ X2 OC 1070 MHz 1500 MHz 11.7 inches/297 mm
MSI R9 390X Gaming 1080 MHz 1525 MHz 10.9 inches/277 mm
PowerColor Devil R9 390X 1100 MHz 1525 MHz 11.22 inches/285 mm
PowerColor PCS+ R9 390X 1060 MHz 1500 MHz 12 inches/305 mm
Sapphire Nitro R9 390X w/ Back Plate 1060 MHz 1500 MHz 12.1 inches/307 mm, 1x DVI 1x HDMI 3x DisplayPort
Sapphire Tri-X R9 390X 1055 MHz 1500 MHz 12.13 inches/308 mm, 1x DVI 1x HDMI 3x DisplayPort
Sapphire Tri-X R9 390X w/ Back Plate 1080 MHz 1500 MHz 12.1 inches/307 mm, 1x DVI 1x HDMI 3x DisplayPort
XFX R9 390X Double Dissipation 1050 MHz 1500 MHz 11.61 inches/295 mm
XFX R9 390X Double Dissipation Black 1090 MHz 1500 MHz 11.61 inches/295 mm