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HP Z6 G4 on eBay

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Before you buy: wipe any drives that come with it, and ask the seller whether the Windows license is genuine. Asset tags, Computrace and BIOS passwords lock some machines: check the listing for them.

Card memory sizes: Wikipedia (CC BY-SA 4.0).

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CPU GPU
Details Model Price w/ shipping CPUs CPU Cores PassMark $/1k PassMark Memory GPU VRAM Storage OS Win 11 list PSU Price Shipping Condition Format Ships from Price checked Listing title

HP Z6 G4: facts

CPUs
up to 2 (HP Z6 G4 Workstation QuickSpecs, c05527761, Version 59, April 1, 2024 (Wayback capture 2025-11-22; the h20195 copy and its older captures are cut off at 1 MiB))
CPU families
Xeon Scalable gen 1 or Xeon Scalable gen 2 (HP Z6 G4 Workstation QuickSpecs, c05527761, Version 59, April 1, 2024 (Wayback capture 2025-11-22; the h20195 copy and its older captures are cut off at 1 MiB))
Memory slots
12 (HP Z6 G4 Workstation QuickSpecs, c05527761, Version 59, April 1, 2024 (Wayback capture 2025-11-22; the h20195 copy and its older captures are cut off at 1 MiB))
Memory types
registered (RDIMM) (HP Z6 G4 Workstation QuickSpecs, c05527761, Version 59, April 1, 2024 (Wayback capture 2025-11-22; the h20195 copy and its older captures are cut off at 1 MiB))
Maximum memory
768 GB (384 GB with Xeon Scalable gen 1; 768 GB with Xeon Scalable gen 2) (HP Z6 G4 Workstation QuickSpecs, c05527761, Version 59, April 1, 2024 (Wayback capture 2025-11-22; the h20195 copy and its older captures are cut off at 1 MiB))
Power supply
1,000 W (HP Z6 G4 Workstation QuickSpecs, c05527761, Version 59, April 1, 2024 (Wayback capture 2025-11-22; the h20195 copy and its older captures are cut off at 1 MiB))
PCIe x16 slots
2 (HP Z6 G4 Workstation QuickSpecs, c05527761, Version 59, April 1, 2024 (Wayback capture 2025-11-22; the h20195 copy and its older captures are cut off at 1 MiB))
Double-wide graphics cards
up to 2 (HP Z6 G4 Workstation QuickSpecs, c05527761, Version 59, April 1, 2024 (Wayback capture 2025-11-22; the h20195 copy and its older captures are cut off at 1 MiB))
Graphics power leads
2x 6-pin graphics power cables (6/8-pin convertible) (HP Z6 G4 Workstation QuickSpecs, c05527761, Version 59, April 1, 2024 (Wayback capture 2025-11-22; the h20195 copy and its older captures are cut off at 1 MiB))
Drive bays
2x 3.5in internal, 2x 5.25in external, 1x 9.5mm slim optical (HP Z6 G4 Workstation QuickSpecs, c05527761, Version 59, April 1, 2024 (Wayback capture 2025-11-22; the h20195 copy and its older captures are cut off at 1 MiB))
Weight
13.6 kg (HP Z6 G4 Workstation QuickSpecs, c05527761, Version 59, April 1, 2024 (Wayback capture 2025-11-22; the h20195 copy and its older captures are cut off at 1 MiB))