Hardware Spec Index

Zephyra GX-3666 Ultra 16GB GDDR6 Graphics Card

Graphics Cards · Zephyra · SKU GX3666-ULTRA · Released 2022 · Updated 2026-10-22

Key facts

Benchmark index18,722 (Graphics Cards scale)
Category rank#13,150
Street price$429
Power205 W (TGP)
Performance per dollar43.64
Released2022

Specifications

BrandZephyra
ModelZephyra GX-3666 Ultra
Video memory16 GB GDDR6
Memory bus256-bit
Memory speed20 Gbps
Memory bandwidth640 GB/s
Shader units7,424
Boost clock2,384 MHz
Bus interfacePCIe 4.0 x16
Total graphics power (TGP)205 W
Power connectors2× 8-pin PCIe
Recommended PSU650 W
Ray tracingHardware-accelerated
UpscalingFSR 2
Display outputs1× HDMI 2.1, 3× DisplayPort 1.4a
Resizable BARSupported
Card size2.5-slot, 253 mm

Related guides

How Much VRAM Do You Need? 1080p, 1440p, 4K and AIResizable BAR (ReBAR) ExplainedGDDR7 Memory ExplainedChoosing a GPU for 1440p GamingChoosing a GPU for 4K GamingPCIe 5.0 Explained

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Cite this page: Hardware Spec Index, “Zephyra GX-3666 Ultra 16GB GDDR6 Graphics Card”, https://vextor7.com/item/2854786 (accessed 2026-10-22).