Hardware Spec Index

Kyndral GX-8644 Ultra 16GB GDDR7 Graphics Card

Graphics Cards · Kyndral · SKU GX8644-ULTRA · Released 2026 · Updated 2026-10-24

Key facts

Benchmark index31,076 (Graphics Cards scale)
Category rank#36,732
Street price$1,279
Power420 W (TGP)
Performance per dollar24.30
Released2026

Specifications

BrandKyndral
ModelKyndral GX-8644 Ultra
Video memory16 GB GDDR7
Memory bus256-bit
Memory speed28 Gbps
Memory bandwidth896 GB/s
Shader units14,208
Boost clock2,777 MHz
Bus interfacePCIe 5.0 x16
Total graphics power (TGP)420 W
Power connectors1× 12V-2x6 (16-pin)
Recommended PSU850 W
Ray tracingHardware-accelerated
UpscalingFSR 4, FSR 3.1
Display outputs1× HDMI 2.1b, 3× DisplayPort 2.1b
Resizable BARSupported
Card size3.5-slot, 294 mm

Related guides

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Cite this page: Hardware Spec Index, “Kyndral GX-8644 Ultra 16GB GDDR7 Graphics Card”, https://vextor7.com/item/11965313 (accessed 2026-10-24).