AMD Radeon R9 390 X2 vs AMD Radeon RX 480

Graphics Processor

GPU model Grenada Ellesmere
GPU variant Grenada PRO (215-0880030) Polaris 10 XT (215-0876184)
Architecture GCN 2.0 GCN 4.0
Foundry TSMC GlobalFoundries
Manufacturing process 28 nm 14 nm
Number of transistors 6,200 million 5,700 million
Die size 438 mm² 232 mm²

Graphics Card

Release date Sep 3rd, 2015 Jun 29th, 2016
Generation Pirate Islands Arctic Islands
Production End-of-life Active
Launch price 1,399 USD 229 USD
Interface PCIe 3.0 x16 PCIe 3.0 x16
Predecessor Volcanic Islands Pirate Islands
Successor Arctic Islands Polaris
Reviews 86 in our database

Clocks

GPU clock 1000 MHz
Memory clock 1350 MHz 5.4 Gbps effective 2000 MHz 8 Gbps effective
Base clock 1120 MHz
Boost clock 1266 MHz

Memory Configuration

Memory size 8 GB 8 GB
Memory type GDDR5 GDDR5
Memory bus width 512 bit 256 bit
Bandwidth 345.6 GB/s 256.0 GB/s

Render Configuration

Shading units 2560 2304
TMUs 160 144
ROPs 64 32
Compute units 40 36
Cache L1 16 KB (per CU) 16 KB (per CU)
Cache L2 1024 KB 2 MB

Performance

Pixel rate 64.00 GPixel/s 40.51 GPixel/s
Texture rate 160.0 GTexel/s 182.3 GTexel/s
FP32 (float) performance 5.120 TFLOPS 5.834 TFLOPS
FP64 (double) performance 640.0 GFLOPS (1:8) 364.6 GFLOPS (1:16)
FP16 (half) performance 5.834 TFLOPS (1:1)

Dimensions & Outputs

Slot width Triple-slot Dual-slot
TDP 580 W 150 W
Suggested PSU 950 W 450 W
Outputs 2x DVI1x HDMI1x DisplayPort 1x HDMI3x DisplayPort
Power connectors 4x 8-pin 1x 6-pin
Board number C671 C940, D009-47
Length 240 mm 9.4 inches
Width 95 mm 3.7 inches
Height 35 mm 1.4 inches

API Support & Features

DirectX 12 (12_0) 12 (12_0)
OpenGL 4.6 4.6
OpenCL 2.0 2.1
Vulkan 1.2 1.2
Shader model 6.3 6.4

Other Features

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