Hardware Spec Index

Zephyra GX-8421 Max 16GB GDDR6 Graphics Card

Graphics Cards · Zephyra · SKU GX8421-MAX · Released 2023 · Updated 2026-10-22

Key facts

Benchmark index19,353 (Graphics Cards scale)
Category rank#28,673
Street price$389
Power195 W (TGP)
Performance per dollar49.75
Released2023

Specifications

BrandZephyra
ModelZephyra GX-8421 Max
Video memory16 GB GDDR6
Memory bus256-bit
Memory speed16 Gbps
Memory bandwidth512 GB/s
Shader units7,040
Boost clock1,836 MHz
Bus interfacePCIe 4.0 x16
Total graphics power (TGP)195 W
Power connectors2× 8-pin PCIe
Recommended PSU600 W
Ray tracingHardware-accelerated
UpscalingFSR 3
Display outputs1× HDMI 2.1, 3× DisplayPort 1.4a
Resizable BARSupported
Card size2.5-slot, 247 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-8421 Max 16GB GDDR6 Graphics Card”, https://vextor7.com/item/45919001 (accessed 2026-10-22).