Hardware Spec Index

Zephyra GX-3939 Ultra 16GB GDDR6 Graphics Card

Graphics Cards · Zephyra · SKU GX3939-ULTRA · Released 2020 · Updated 2026-10-19

Key facts

Benchmark index29,803 (Graphics Cards scale)
Category rank#16,866
Street price$1,099
Power320 W (TGP)
Performance per dollar27.12
Released2020

Specifications

BrandZephyra
ModelZephyra GX-3939 Ultra
Video memory16 GB GDDR6
Memory bus256-bit
Memory speed14 Gbps
Memory bandwidth448 GB/s
Shader units13,696
Boost clock2,120 MHz
Bus interfacePCIe 4.0 x16
Total graphics power (TGP)320 W
Power connectors3× 8-pin PCIe
Recommended PSU750 W
Ray tracingHardware-accelerated
UpscalingFSR 1 (spatial)
Display outputs1× HDMI 2.0b, 3× DisplayPort 1.4
Resizable BARSupported
Card size3-slot, 303 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-3939 Ultra 16GB GDDR6 Graphics Card”, https://vextor7.com/item/83175742 (accessed 2026-10-19).