Hardware Spec Index

Zephyra GX-6640 Ultra 12GB GDDR6 Graphics Card

Graphics Cards · Zephyra · SKU GX6640-ULTRA · Released 2019 · Updated 2026-10-25

Key facts

Benchmark index17,521 (Graphics Cards scale)
Category rank#29,156
Street price$369
Power180 W (TGP)
Performance per dollar47.48
Released2019

Specifications

BrandZephyra
ModelZephyra GX-6640 Ultra
Video memory12 GB GDDR6
Memory bus192-bit
Memory speed16 Gbps
Memory bandwidth384 GB/s
Shader units6,144
Boost clock2,420 MHz
Bus interfacePCIe 3.0 x16
Total graphics power (TGP)180 W
Power connectors2× 8-pin PCIe
Recommended PSU600 W
Ray tracingHardware-accelerated
UpscalingFSR 1 (spatial)
Display outputs1× HDMI 2.0b, 3× DisplayPort 1.4
Resizable BARSupported (firmware update)
Card size2.5-slot, 235 mm

Related guides

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Cite this page: Hardware Spec Index, “Zephyra GX-6640 Ultra 12GB GDDR6 Graphics Card”, https://vextor7.com/item/27368917 (accessed 2026-10-25).