Hardware Spec Index

Kyndral GX-8644 Ultra 24GB GDDR7 Graphics Card

Graphics Cards · Kyndral · SKU GX8644-ULTRA · Released 2025 · Updated 2026-10-20

Key facts

Benchmark index33,203 (Graphics Cards scale)
Category rank#18,009
Street price$1,299
Power405 W (TGP)
Performance per dollar25.56
Released2025

Specifications

BrandKyndral
ModelKyndral GX-8644 Ultra
Video memory24 GB GDDR7
Memory bus384-bit
Memory speed30 Gbps
Memory bandwidth1,440 GB/s
Shader units13,568
Boost clock2,847 MHz
Bus interfacePCIe 5.0 x16
Total graphics power (TGP)405 W
Power connectors1× 12V-2x6 (16-pin)
Recommended PSU850 W
Ray tracingHardware-accelerated
UpscalingXeSS 2
Display outputs1× HDMI 2.1b, 3× DisplayPort 2.1b
Resizable BARSupported
Card size3.5-slot, 300 mm

Related guides

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Cite this page: Hardware Spec Index, “Kyndral GX-8644 Ultra 24GB GDDR7 Graphics Card”, https://vextor7.com/item/2987484 (accessed 2026-10-20).