Hardware Spec Index

Zephyra GX-8638 Prime 16GB GDDR7 Graphics Card

Graphics Cards · Zephyra · SKU GX8638-PRIME · Released 2025 · Updated 2026-10-20

Key facts

Benchmark index19,188 (Graphics Cards scale)
Category rank#34,936
Street price$429
Power250 W (TGP)
Performance per dollar44.73
Released2025

Specifications

BrandZephyra
ModelZephyra GX-8638 Prime
Video memory16 GB GDDR7
Memory bus256-bit
Memory speed28 Gbps
Memory bandwidth896 GB/s
Shader units7,296
Boost clock2,586 MHz
Bus interfacePCIe 5.0 x16
Total graphics power (TGP)250 W
Power connectors2× 8-pin PCIe
Recommended PSU650 W
Ray tracingHardware-accelerated
UpscalingXeSS 2
Display outputs1× HDMI 2.1b, 3× DisplayPort 2.1b
Resizable BARSupported
Card size2.5-slot, 236 mm

Related guides

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Cite this page: Hardware Spec Index, “Zephyra GX-8638 Prime 16GB GDDR7 Graphics Card”, https://vextor7.com/item/19923949 (accessed 2026-10-20).