Hardware Spec Index

Zephyra GX-1638 Ultra 16GB GDDR6 Graphics Card

Graphics Cards · Zephyra · SKU GX1638-ULTRA · Released 2022 · Updated 2026-10-18

Key facts

Benchmark index33,407 (Graphics Cards scale)
Category rank#36,109
Street price$1,309
Power320 W (TGP)
Performance per dollar25.52
Released2022

Specifications

BrandZephyra
ModelZephyra GX-1638 Ultra
Video memory16 GB GDDR6
Memory bus256-bit
Memory speed20 Gbps
Memory bandwidth640 GB/s
Shader units13,696
Boost clock1,934 MHz
Bus interfacePCIe 4.0 x16
Total graphics power (TGP)320 W
Power connectors3× 8-pin PCIe
Recommended PSU750 W
Ray tracingHardware-accelerated
UpscalingXeSS
Display outputs1× HDMI 2.1, 3× DisplayPort 1.4a
Resizable BARSupported
Card size3-slot, 297 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

Similar Graphics Cards

ModelBenchmarkPriceCompare
Veltrix GX-1575 Ultra 24GB GDDR6 Graphics Card38,564$2,239Compare
Zephyra GX-7317 Max 8GB GDDR6 Graphics Card10,782$139Compare
Teralux GX-8812 Pro 32GB GDDR6X Graphics Card44,800$2,159Compare
Nexora GX-1640 Max 8GB GDDR6 Graphics Card14,979$209Compare
Veltrix GX-6923 Edge 8GB GDDR6 Graphics Card23,635$599Compare
Veltrix GX-3628 Ultra 16GB GDDR6X Graphics Card35,850$1,649Compare

All Graphics Cards · JSON

Cite this page: Hardware Spec Index, “Zephyra GX-1638 Ultra 16GB GDDR6 Graphics Card”, https://vextor7.com/item/20004243 (accessed 2026-10-18).