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AMD Radeon R9 390 X2

Graphics Processor
Grenada x2
Cores
2560 x2
TMUs
160 x2
ROPs
64 x2
Memory Size
8 GB x2
Memory Type
GDDR5
Bus Width
512 bit x2
The Radeon R9 390 X2 is an enthusiast-class graphics card by AMD, launched in September 2015. Built on the 28 nm process, and based on the Grenada graphics processor, in its Grenada PRO variant, the card supports DirectX 12. This ensures that all modern games will run on Radeon R9 390 X2. 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 X2 to reach the product's target shader count. Radeon R9 390 X2 combines two graphics processors to increase performance. It features 2560 shading units, 160 texture mapping units, and 64 ROPs, per GPU. AMD has paired 16 GB GDDR5 memory with the Radeon R9 390 X2, which are connected using a 512-bit memory interface per GPU (each GPU manages 8,192 MB). The GPU is operating at a frequency of 1000 MHz, memory is running at 1350 MHz.
Being a triple-slot card, the AMD Radeon R9 390 X2 draws power from 4x 8-pin power connectors, with power draw rated at 580 W maximum. Display outputs include: 2x DVI, 1x HDMI, 1x DisplayPort. Radeon R9 390 X2 is connected to the rest of the system using a PCI-Express 3.0 x16 interface. Its price at launch was 1399 US Dollars.

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
Sep 3rd, 2015
Generation
Pirate Islands
(R9 300)
Production
Active
Launch Price
1,399 USD
Bus Interface
PCIe 3.0 x16

Relative Performance

2%
GeForce 210
3%
GeForce 9400 GT
3%
Radeon HD 4550
4%
Radeon HD 5450
5%
Radeon HD 6450
5%
GeForce GT 520
6%
GeForce GT 220
8%
GeForce GT 430
8%
Radeon HD 5570
9%
Radeon HD 4670
9%
GeForce GT 440
9%
GeForce GT 240
11%
GeForce 9600 GT
12%
Radeon HD 5670
12%
GeForce GT 640
13%
GeForce 9800 GT
13%
Radeon HD 6670
14%
Radeon HD 4830
15%
Radeon HD 4770
15%
Radeon HD 4850
16%
GeForce GTS 250
16%
GeForce GTS 450
17%
Radeon HD 5750
19%
Radeon HD 7750
19%
Radeon HD 5770
20%
GeForce GTX 260
20%
Radeon HD 4870
20%
Radeon Vega 8
20%
GeForce GTX 550 Ti
20%
GeForce GTX 650
22%
Radeon HD 5830
23%
Radeon HD 6790
23%
Radeon HD 4890
24%
GeForce GTX 460
24%
Radeon RX Vega 11
24%
GeForce GT 1030
25%
GeForce GTX 275
25%
Radeon HD 7770 GHz Edition
25%
GeForce GTX 280
25%
GeForce GTX 465
26%
Radeon HD 6850
27%
GeForce GTX 285
29%
Radeon HD 5850
29%
GeForce GTX 650 Ti
29%
Radeon HD 7790
31%
Radeon RX 550
31%
GeForce GTX 470
32%
Radeon HD 6870
34%
Radeon HD 5870
35%
GeForce GTX 560 Ti
35%
Radeon HD 4870 X2
36%
GeForce GTX 750 Ti
36%
Radeon HD 6950
37%
GeForce GTX 295
38%
GeForce GTX 650 Ti Boost
38%
Radeon HD 7850
39%
GeForce GTX 480
40%
Radeon HD 6970
41%
Radeon R7 265
42%
Radeon RX 460
42%
Radeon R7 370
42%
GeForce GTX 660
42%
GeForce GTX 570
43%
Radeon RX 560
45%
GeForce GTX 950
46%
Radeon HD 7870 GHz Edition
47%
Radeon R9 270X
48%
GeForce GTX 660 Ti
48%
GeForce GTX 580
48%
GeForce GTX 1050
48%
Radeon HD 7950
49%
Radeon HD 5970
51%
GeForce GTX 760
54%
GeForce GTX 670
56%
GeForce GTX 960
57%
Radeon R9 380
58%
Radeon R9 285
58%
Radeon HD 7970
59%
GeForce GTX 680
60%
GeForce GTX 1050 Ti
62%
GeForce GTX 770
63%
Radeon HD 6990
65%
Radeon R9 280X
66%
GeForce GTX 590
66%
Radeon HD 7970 GHz Edition
73%
GeForce GTX 780
75%
GeForce GTX 1650
80%
Radeon RX 470
81%
Radeon R9 290
85%
Radeon RX 570
87%
Radeon R9 390
87%
Radeon R9 290X
88%
GeForce GTX 970
89%
GeForce GTX TITAN
91%
GeForce GTX 780 Ti
92%
Radeon R9 390X
92%
Radeon HD 7990
93%
Radeon RX 480
93%
GeForce GTX 690
96%
GeForce GTX 1060 6 GB
97%
Radeon RX 5500 OEM
98%
Radeon RX 580
99%
Radeon RX 5500 XT
100%
Radeon R9 390 X2
101%
GeForce GTX 980
101%
GeForce GTX 1650 SUPER
102%
Radeon R9 FURY
106%
Radeon RX 590
112%
Radeon R9 295X2
113%
GeForce GTX 1660
114%
Radeon R9 FURY X
116%
GeForce GTX 980 Ti
119%
GeForce GTX TITAN X
126%
GeForce GTX 1660 SUPER
129%
GeForce GTX 1660 Ti
129%
GeForce GTX 1070
138%
Radeon RX Vega 56
146%
GeForce GTX 1070 Ti
150%
Radeon RX Vega 64
152%
GeForce GTX 1080
152%
GeForce RTX 2060
158%
Radeon RX 5700
171%
GeForce RTX 2060 SUPER
177%
GeForce RTX 2070
181%
Radeon RX 5700 XT
183%
Radeon VII
188%
TITAN X Pascal
194%
GeForce GTX 1080 Ti
196%
GeForce RTX 2070 SUPER
209%
GeForce RTX 2080
221%
GeForce RTX 2080 SUPER
244%
GeForce RTX 2080 Ti
Based on TPU review data: "Performance Summary" at 1920x1080
Performance estimated based on architecture, shader count and clocks.

Clock Speeds

GPU Clock
1000 MHz
Memory Clock
1350 MHz
5400 MHz effective

Memory

Memory Size
8 GB
Memory Type
GDDR5
Memory Bus
512 bit
Bandwidth
345.6 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
Texture Rate
160.0 GTexel/s
FP32 (float) performance
5.120 TFLOPS
FP64 (double) performance
640.0 GFLOPS (1:8)

Board Design

Slot Width
Triple-slot
TDP
580 W
Suggested PSU
950 W
Outputs
2x DVI
1x HDMI
1x DisplayPort
Power Connectors
4x 8-pin
Board Number
C671

Graphics Features

DirectX
12 (12_0)
OpenGL
4.6
OpenCL
2.0
Vulkan
1.2.131
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

Retail boards based on this design (1)

Name GPU Clock Memory Clock Other Changes
PowerColor DEVIL13 Dual-Core R9 390 1000 MHz 1350 MHz