Hardware Spec Index

Zephyra GX-3947 XT 16GB GDDR6X Graphics Card

Graphics Cards · Zephyra · SKU GX3947-XT · Released 2021 · Updated 2026-10-27

Key facts

Benchmark index37,776 (Graphics Cards scale)
Category rank#6,222
Street price$1,749
Power390 W (TGP)
Performance per dollar21.60
Released2021

Specifications

BrandZephyra
ModelZephyra GX-3947 XT
Video memory16 GB GDDR6X
Memory bus256-bit
Memory speed23 Gbps
Memory bandwidth736 GB/s
Shader units17,280
Boost clock2,058 MHz
Bus interfacePCIe 4.0 x16
Total graphics power (TGP)390 W
Power connectors3× 8-pin PCIe
Recommended PSU800 W
Ray tracingHardware-accelerated
UpscalingFSR 1 (spatial)
Display outputs1× HDMI 2.1, 3× DisplayPort 1.4a
Resizable BARSupported
Card size3-slot, 323 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-3947 XT 16GB GDDR6X Graphics Card”, https://vextor7.com/item/71751911 (accessed 2026-10-27).