AMD Radeon R9 390 X2 vs AMD Radeon RX 580

Table of Contents

Graphics Processor

GPU model Grenada Polaris 20
GPU variant Grenada PRO (215-0880030) Polaris 20 XTX (215-0910038)
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 Apr 18th, 2017
Generation Pirate Islands Polaris
Production End-of-life Active
Launch price 1,399 USD 229 USD
Interface PCIe 3.0 x16 PCIe 3.0 x16
Predecessor Volcanic Islands Arctic Islands
Successor Arctic Islands Vega
Current price Amazon / Newegg
Reviews 52 in our database

Clocks

GPU clock 1000 MHz
Memory clock 1350 MHz 5.4 Gbps effective 2000 MHz 8 Gbps effective
Base clock 1257 MHz
Boost clock 1340 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 42.88 GPixel/s
Texture rate 160.0 GTexel/s 193.0 GTexel/s
FP32 (float) performance 5.120 TFLOPS 6.175 TFLOPS
FP64 (double) performance 640.0 GFLOPS (1:8) 385.9 GFLOPS (1:16)
FP16 (half) performance 6.175 TFLOPS (1:1)

Dimensions & Outputs

Slot width Triple-slot Dual-slot
TDP 580 W 185 W
Suggested PSU 950 W 450 W
Outputs 2x DVI1x HDMI1x DisplayPort 1x HDMI3x DisplayPort
Power connectors 4x 8-pin 1x 8-pin
Board number C671 C940, D009-04
Length 241 mm 9.5 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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