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AMD Radeon R9 390

Grenada
Graphics Processor
2560
Cores
160
TMUs
64
ROPs
8192 MB
Memory Size
GDDR5
Memory Type
512 bit
Bus Width
AMD Radeon R9 390 Photo AMD Grenada Photo
The Radeon R9 390 is a performance graphics card by AMD, launched in June 2015. Built on the 28 nm process, and based on the Grenada graphics processor, in its Grenada PRO 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. Unlike the fully unlocked Radeon R9 390X, which uses the same GPU but has all 2816 shaders enabled, AMD has disabled some shading units on the Radeon R9 390 to reach the product's target shader count. It features 2560 shading units, 160 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 1000 MHz, memory is running at 1500 MHz.
Being a dual-slot card, the AMD Radeon R9 390 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 390 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 329 US Dollars.

Graphics Processor

GPU Name
Grenada
GPU Variant
Grenada PRO
(215-0880030)
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
329 USD
Bus Interface
PCIe 3.0 x16

Relative Performance

2%
3%
4%
5%
5%
6%
7%
9%
9%
10%
11%
11%
13%
13%
14%
15%
15%
16%
17%
18%
18%
19%
19%
22%
22%
23%
23%
23%
23%
24%
25%
26%
27%
28%
28%
28%
28%
28%
28%
29%
30%
31%
33%
34%
34%
35%
35%
37%
39%
40%
41%
41%
42%
43%
44%
44%
45%
47%
48%
48%
48%
48%
49%
53%
53%
54%
55%
55%
56%
56%
57%
57%
58%
63%
65%
66%
67%
67%
68%
70%
71%
73%
75%
76%
76%
84%
92%
94%
100%
Radeon R9 390
101%
102%
103%
104%
105%
106%
107%
107%
108%
114%
116%
118%
118%
129%
132%
134%
144%
158%
164%
176%
176%
186%
218%
223%
243%
277%
Based on TPU review data: "Performance Summary" at 1920x1080

Clock Speeds

GPU Clock
1000 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
2560
TMUs
160
ROPs
64
Compute Units
40

Theoretical Performance

Pixel Rate
64.00 GPixel/s
Texture Rate
160.0 GTexel/s
FP32 (float) performance
5,120 GFLOPS
FP64 (double) performance
640.0 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
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 (14)

Name GPU Clock Memory Clock Other Changes
ASUS R9 390 DirectCU II 1000 MHz 1500 MHz 11.3 inches/287 mm
ASUS STRIX R9 390 DirectCU III OC 1050 MHz 1500 MHz 11.8 inches/300 mm
Club 3D R9 390 royalQueen 1010 MHz 1500 MHz 12 inches/305 mm
GIGABYTE R9 390 G1 Gaming 1025 MHz 1500 MHz 9.21 inches/234 mm
HIS R9 390 IceQ X2 II 1020 MHz 1500 MHz 11.7 inches/297 mm
HIS R9 390 IceQ X2 OC 1020 MHz 1500 MHz 11.7 inches/297 mm
MSI R9 390 Gaming 1040 MHz 1525 MHz 10.9 inches/277 mm
PowerColor PCS+ R9 390 1010 MHz 1500 MHz 12 inches/305 mm
Sapphire Nitro R9 390 1010 MHz 1500 MHz 12.13 inches/308 mm, 1x DVI 1x HDMI 3x DisplayPort
Sapphire Nitro R9 390 with Back Plate 1040 MHz 1500 MHz 12.13 inches/308 mm, 1x DVI 1x HDMI 3x DisplayPort
VTX3D R9 390 Dual Fan 1000 MHz 1500 MHz 9.84 inches/250 mm
XFX R9 390 Double Dissipation 1000 MHz 1500 MHz 11.61 inches/295 mm
XFX R9 390 Double Dissipation 1015 MHz 1500 MHz 11.61 inches/295 mm
XFX R9 390 Double Dissipation Black 1050 MHz 1500 MHz 11.61 inches/295 mm