Hardware Spec Index

Zephyra GX-6403 SE 16GB GDDR6X Graphics Card

Graphics Cards · Zephyra · SKU GX6403-SE · Released 2021 · Updated 2026-10-24

Key facts

Benchmark index32,315 (Graphics Cards scale)
Category rank#38,460
Street price$1,099
Power325 W (TGP)
Performance per dollar29.40
Released2021

Specifications

BrandZephyra
ModelZephyra GX-6403 SE
Video memory16 GB GDDR6X
Memory bus256-bit
Memory speed19 Gbps
Memory bandwidth608 GB/s
Shader units13,824
Boost clock2,393 MHz
Bus interfacePCIe 4.0 x16
Total graphics power (TGP)325 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, 299 mm

Related guides

How Much VRAM Do You Need? 1080p, 1440p, 4K and AIResizable BAR (ReBAR) ExplainedChoosing a GPU for 1440p GamingChoosing a GPU for 4K GamingGDDR7 Memory ExplainedPCIe 5.0 Explained

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Cite this page: Hardware Spec Index, “Zephyra GX-6403 SE 16GB GDDR6X Graphics Card”, https://vextor7.com/item/27362066 (accessed 2026-10-24).