Hardware Spec Index

Zephyra GX-3991 XT 16GB GDDR6 Graphics Card

Graphics Cards · Zephyra · SKU GX3991-XT · Released 2024 · Updated 2026-10-19

Key facts

Benchmark index25,964 (Graphics Cards scale)
Category rank#49,799
Street price$739
Power270 W (TGP)
Performance per dollar35.13
Released2024

Specifications

BrandZephyra
ModelZephyra GX-3991 XT
Video memory16 GB GDDR6
Memory bus256-bit
Memory speed20 Gbps
Memory bandwidth640 GB/s
Shader units11,008
Boost clock2,581 MHz
Bus interfacePCIe 4.0 x16
Total graphics power (TGP)270 W
Power connectors1× 12V-2x6 (16-pin)
Recommended PSU700 W
Ray tracingHardware-accelerated
UpscalingFSR 3
Display outputs1× HDMI 2.1, 3× DisplayPort 1.4a
Resizable BARSupported
Card size3-slot, 278 mm

Related guides

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Cite this page: Hardware Spec Index, “Zephyra GX-3991 XT 16GB GDDR6 Graphics Card”, https://vextor7.com/item/17545363 (accessed 2026-10-19).