Hardware Spec Index

Kyndral GX-8640 Ultra 16GB GDDR6 Graphics Card

Graphics Cards · Kyndral · SKU GX8640-ULTRA · Released 2023 · Updated 2026-10-25

Key facts

Benchmark index30,915 (Graphics Cards scale)
Category rank#5,468
Street price$1,099
Power325 W (TGP)
Performance per dollar28.13
Released2023

Specifications

BrandKyndral
ModelKyndral GX-8640 Ultra
Video memory16 GB GDDR6
Memory bus256-bit
Memory speed18 Gbps
Memory bandwidth576 GB/s
Shader units13,824
Boost clock2,225 MHz
Bus interfacePCIe 4.0 x16
Total graphics power (TGP)325 W
Power connectors1× 12V-2x6 (16-pin)
Recommended PSU750 W
Ray tracingHardware-accelerated
UpscalingDLSS 3
Display outputs1× HDMI 2.1, 3× DisplayPort 1.4a
Resizable BARSupported
Card size3-slot, 302 mm

Related guides

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Cite this page: Hardware Spec Index, “Kyndral GX-8640 Ultra 16GB GDDR6 Graphics Card”, https://vextor7.com/item/76525032 (accessed 2026-10-25).