Hardware Spec Index

Zephyra GX-8640 XT 12GB GDDR6 Graphics Card

Graphics Cards · Zephyra · SKU GX8640-XT · Released 2021 · Updated 2026-10-19

Key facts

Benchmark index16,850 (Graphics Cards scale)
Category rank#10,975
Street price$339
Power180 W (TGP)
Performance per dollar49.71
Released2021

Specifications

BrandZephyra
ModelZephyra GX-8640 XT
Video memory12 GB GDDR6
Memory bus192-bit
Memory speed18 Gbps
Memory bandwidth432 GB/s
Shader units6,144
Boost clock2,146 MHz
Bus interfacePCIe 4.0 x16
Total graphics power (TGP)180 W
Power connectors2× 8-pin PCIe
Recommended PSU600 W
Ray tracingHardware-accelerated
UpscalingFSR 1 (spatial)
Display outputs1× HDMI 2.1, 3× DisplayPort 1.4a
Resizable BARSupported
Card size2.5-slot, 237 mm

Related guides

How Much VRAM Do You Need? 1080p, 1440p, 4K and AIResizable BAR (ReBAR) ExplainedGDDR7 Memory ExplainedChoosing a GPU for 1440p GamingChoosing a GPU for 4K GamingPCIe 5.0 Explained

Similar Graphics Cards

ModelBenchmarkPriceCompare
Kyndral GX-6985 Core 8GB GDDR6 Graphics Card20,254$429Compare
Orbita GX-6556 Prime 32GB GDDR6 Graphics Card40,099$1,749Compare
Kyndral GX-7614 Edge 24GB GDDR6 Graphics Card40,314$1,979Compare
Kyndral GX-5660 Core 8GB GDDR6 Graphics Card14,704$219Compare
Kyndral GX-6079 Ti 32GB GDDR6 Graphics Card36,455$1,519Compare
Zephyra GX-3994 Prime 24GB GDDR7 Graphics Card40,599$2,069Compare

All Graphics Cards · JSON

Cite this page: Hardware Spec Index, “Zephyra GX-8640 XT 12GB GDDR6 Graphics Card”, https://vextor7.com/item/203133 (accessed 2026-10-19).