Hardware Spec Index

Zephyra GX-4891 Ultra 16GB GDDR6 Graphics Card

Graphics Cards · Zephyra · SKU GX4891-ULTRA · Released 2021 · Updated 2026-10-25

Key facts

Benchmark index34,983 (Graphics Cards scale)
Category rank#30,637
Street price$1,319
Power345 W (TGP)
Performance per dollar26.52
Released2021

Specifications

BrandZephyra
ModelZephyra GX-4891 Ultra
Video memory16 GB GDDR6
Memory bus256-bit
Memory speed14 Gbps
Memory bandwidth448 GB/s
Shader units14,848
Boost clock2,561 MHz
Bus interfacePCIe 4.0 x16
Total graphics power (TGP)345 W
Power connectors3× 8-pin PCIe
Recommended PSU750 W
Ray tracingHardware-accelerated
UpscalingFSR 1 (spatial)
Display outputs1× HDMI 2.1, 3× DisplayPort 1.4a
Resizable BARSupported
Card size3-slot, 306 mm

Related guides

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Cite this page: Hardware Spec Index, “Zephyra GX-4891 Ultra 16GB GDDR6 Graphics Card”, https://vextor7.com/item/96867979 (accessed 2026-10-25).