Hardware Spec Index

Kyndral GX-6639 XT 32GB GDDR6 Graphics Card

Graphics Cards · Kyndral · SKU GX6639-XT · Released 2021 · Updated 2026-10-26

Key facts

Benchmark index39,394 (Graphics Cards scale)
Category rank#49,630
Street price$2,049
Power390 W (TGP)
Performance per dollar19.23
Released2021

Specifications

BrandKyndral
ModelKyndral GX-6639 XT
Video memory32 GB GDDR6
Memory bus512-bit
Memory speed14 Gbps
Memory bandwidth896 GB/s
Shader units17,152
Boost clock1,862 MHz
Bus interfacePCIe 4.0 x16
Total graphics power (TGP)390 W
Power connectors3× 8-pin PCIe
Recommended PSU800 W
Ray tracingHardware-accelerated
UpscalingFSR 1 (spatial)
Display outputs1× HDMI 2.1, 3× DisplayPort 1.4a
Resizable BARSupported
Card size3-slot, 325 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

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Cite this page: Hardware Spec Index, “Kyndral GX-6639 XT 32GB GDDR6 Graphics Card”, https://vextor7.com/item/5263428 (accessed 2026-10-26).