Hardware Spec Index

Zephyra GX-3818 Ultra 16GB GDDR6X Graphics Card

Graphics Cards · Zephyra · SKU GX3818-ULTRA · Released 2022 · Updated 2026-10-25

Key facts

Benchmark index32,757 (Graphics Cards scale)
Category rank#15,940
Street price$1,299
Power345 W (TGP)
Performance per dollar25.22
Released2022

Specifications

BrandZephyra
ModelZephyra GX-3818 Ultra
Video memory16 GB GDDR6X
Memory bus256-bit
Memory speed23 Gbps
Memory bandwidth736 GB/s
Shader units14,976
Boost clock2,336 MHz
Bus interfacePCIe 4.0 x16
Total graphics power (TGP)345 W
Power connectors3× 8-pin PCIe
Recommended PSU750 W
Ray tracingHardware-accelerated
UpscalingDLSS 3
Display outputs1× HDMI 2.1, 3× DisplayPort 1.4a
Resizable BARSupported
Card size3-slot, 297 mm

Related guides

How Much VRAM Do You Need? 1080p, 1440p, 4K and AIResizable BAR (ReBAR) ExplainedChoosing a GPU for 1440p GamingChoosing a GPU for 4K GamingGDDR7 Memory ExplainedPCIe 5.0 Explained

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Cite this page: Hardware Spec Index, “Zephyra GX-3818 Ultra 16GB GDDR6X Graphics Card”, https://vextor7.com/item/1260313 (accessed 2026-10-25).