Hardware Spec Index

Zephyra GX-6621 Ultra 8GB GDDR6 Graphics Card

Graphics Cards · Zephyra · SKU GX6621-ULTRA · Released 2022 · Updated 2026-10-19

Key facts

Benchmark index16,759 (Graphics Cards scale)
Category rank#46,481
Street price$299
Power170 W (TGP)
Performance per dollar56.05
Released2022

Specifications

BrandZephyra
ModelZephyra GX-6621 Ultra
Video memory8 GB GDDR6
Memory bus128-bit
Memory speed16 Gbps
Memory bandwidth256 GB/s
Shader units5,504
Boost clock1,938 MHz
Bus interfacePCIe 4.0 x8
Total graphics power (TGP)170 W
Power connectors2× 8-pin PCIe
Recommended PSU600 W
Ray tracingHardware-accelerated
UpscalingDLSS 3
Display outputs1× HDMI 2.1, 3× DisplayPort 1.4a
Resizable BARSupported
Card size2-slot, 226 mm

Related guides

How Much VRAM Do You Need? 1080p, 1440p, 4K and AIResizable BAR (ReBAR) ExplainedGDDR7 Memory ExplainedChoosing a GPU for 1440p GamingChoosing a GPU for 4K GamingPCIe 5.0 Explained

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Cite this page: Hardware Spec Index, “Zephyra GX-6621 Ultra 8GB GDDR6 Graphics Card”, https://vextor7.com/item/7946321 (accessed 2026-10-19).