Hardware Spec Index

Zephyra GX-4991 Ultra 16GB GDDR6 Graphics Card

Graphics Cards · Zephyra · SKU GX4991-ULTRA · Released 2024 · Updated 2026-10-22

Key facts

Benchmark index34,317 (Graphics Cards scale)
Category rank#16,399
Street price$1,439
Power355 W (TGP)
Performance per dollar23.85
Released2024

Specifications

BrandZephyra
ModelZephyra GX-4991 Ultra
Video memory16 GB GDDR6
Memory bus256-bit
Memory speed18 Gbps
Memory bandwidth576 GB/s
Shader units15,488
Boost clock2,031 MHz
Bus interfacePCIe 4.0 x16
Total graphics power (TGP)355 W
Power connectors1× 12V-2x6 (16-pin)
Recommended PSU800 W
Ray tracingHardware-accelerated
UpscalingFSR 3
Display outputs1× HDMI 2.1, 3× DisplayPort 1.4a
Resizable BARSupported
Card size3-slot, 301 mm

Related guides

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Cite this page: Hardware Spec Index, “Zephyra GX-4991 Ultra 16GB GDDR6 Graphics Card”, https://vextor7.com/item/1149720 (accessed 2026-10-22).