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Expand your power

HP Z4 G4 WORKSTATION

Take your business to the next level of performance, expandability, and no compromise reliability in one complete

package. The HP Z4 G4 Workstation features a perfect mix of HP Z DNA in a performance workstation package

with up to 18 discrete processor cores, up to 512 GB of RAM, and multiple storage and PCIe conguration options.

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The HP Z4 G4 Workstation is HP’s high performance single processor

the latest professional graphics and single socket multicore processor

supplies, the new HP Z4 G4 workstation supports a vast selection

of hardware congurations.

Tool-free design

customers with an integrated security solution. Additionally, the side access panel continues to oer the security

features of its predecessor: the HP BPC Security Lock mounting feature, a security slot, and a padlock loop—

allowing customers to select the right level of security. For customers with remote security needs, a system intrusion

switch and a remote/centrally controlled solenoid lock are available as optional accessories.

The HP Z4 G4 Workstation also features HP SureStart Gen 3, HP Secure Erase, which enables the ability to

overwrite data ve times over ensuring complete data removal; and HP’s Manageability Integration Kit.

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Expandability and performance

eight memory slots, with support for the latest DDR4 memory, and up to ve

high-performance 3rd-generation

PCI Express expansion slots. To help eliminate bottlenecks with external devices, HP Z4 G4 also provides six rear

accessible SuperSpeed USB 3.1 Gen 1 ports1.

Quiet and reliable

Designed with the environment in mind

,

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The HP Z4 G4 Workstation utilizes PCI-Express 3.0 technology with high

performance over a variety of conditions. This paper provides guidance on

optimizing the performance of your system when using PCI-Express cards.

Integrated PCI-Express 3.0

The HP Z4 G4 uses the lntel

Core

X-series Processors

, with integrated PCI-

Express 3.0 controllers delivering a peak bandwidth of 16 GB/s per direction for each x16 slot (1 GB/s per lane).

PCI-Express 3.0 is backward compatible with 1.0 and 2.0, and slots will train to the highest common speed.

PCI Express 3.0 slots will initialize at 1.0 and then transition to 3.0 through a training sequence that involves four

adaptive training phases. It is recommended to carefully evaluate and validate PCI-Express 3.0 devices that are

not available or supported from HP. PCI-Express options vary by processor selection. There are dierences on the

motherboard tied to the processor family, therefore motherboards are not interchangeable between the Intel

Xeon

W Processors and Intel

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PCI-Express Slot Options

The HP Z4 G4 provides a total of ve high-performance Graphics and Expansion slots and supports up to two PCIe

3.0 graphics cards. Two M.2 slots are also available at PCIe 3.0 speeds. An additional bulkhead allows for a sixth

mechanical-only Expansion card. The HP Z4 G4, depending on system congurations, can support up to two

250 W cards.

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Intel

Core

Additional Tips

If possible, make sure all I/O cards are loaded in slots that have a PCI-Express Lane Width at least as wide as the

card (see Table 1).

For cards that are latency sensitive, load these cards in processor slots.

Ensure Idle Power Savings BIOS setting is set to Normal (BIOS setup menu -> Advanced -> Power

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controller.

SATA Storage Features

Controller interfaces and supported drive types.

The controllers support the following drive types and max link speeds:

desired Option ROM Launch Policy from the pull down menu. The OROM or UEFI driver is not available when the

SATA controller is set to AHCI.

If the setting is grayed out, it will be necessary to change Secure Boot Conguration in BIOS setup under

“Advanced”, “Secure Boot Conguration”, “Congure Legacy Support and Secure Boot”.

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“Legacy Support Enabled” will allow setting Option ROM Launch Policy to “All Legacy” or “All UEFI Except Video”.

When the Option ROM Launch Policy is set to All Legacy, the SATA OROM will only display at power on if there

are two or more RAID capable devices attached to the controller, or a single device is attached that contains RAID

metadata. In the latter case, the OROM will show that the RAID is failed or degraded.

When the Option ROM Launch Policy is set to UEFI, the legacy OROM will not display and management of RAID can

be performed in BIOS Setup under UEFI Drivers.

or uncheck the box for AHCI.

• RAID (Default; ACHI + RAID capability with greatest exibility for most users)

• AHCI (Required when using SEDs)

The following shows the settings for Controller Enable/Disable and SATA emulation mode.

Per port Enable/Disable of SATA ports

Individual SATA ports can be Disabled or Enabled individually from the BIOS menu under “Advanced”, “Port Options”.

Select Enable Disable, or eSATA from the pull down menu for the Port that you would like to Enable Disable or

designate as eSATA. Setting the port to eSATA will enable the port and mark it as an external port that can be ejected.

External SATA (eSATA)

External SATA (eSATA) is supported on the SATA controller with an optional eSATA bulkhead adapter.

Hot plug or Hot unplug and surprise removal/insertion of internal drives is not recommended.

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TRIM support for SSDs

on the SATA controller.

AHCI and RAID Technology

installed, the SATA emulation mode will be set to AHCI. The SATA emulation mode can be changed in BIOS setup

under “Advanced”, “System Options”, but changing the mode is not recommended and can result in boot failure or

AHCI (Advanced Host Controller Interface)

AHCI is a technical standard developed by Intel® for the hardware mechanism that allows software to communicate

with SATA (Serial ATA) devices. It is enumerated as a PCI device and transfers data between system memory and

SATA devices.

• Elimination of master/slave handling

• Native Command Queuing (NCQ) that allows a SATA device to internally optimize the order of command execution

• TRIM command support for SSDs which keeps track of les that have been deleted but not erased on the drive.

provides data redundancy protection against a single drive failure, does not use parity, and does not improve

performance. If a drive fails, the drive can be replaced by a drive of the same capacity or larger capacity to rebuild the

RAID array.

with parity data in distributed blocks across all member disks. A RAID 5 volume is tolerant of a single disk failure.

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controller must erase a block of memory prior to writing. This can slow performance in applications that perform

a lot of le write and le delete operations. One example is in compiling code where the compiler generates many

intermediate les that then get deleted.

The table below shows which RAID arrays support TRIM:

NVMe 0, 1, 10

HP Workstations ship with default storage cache settings that balance performance with data protection.

The balance of performance and protection can be adjusted by changing one or more of these settings.

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Windows write-cache buer ushing: DEFAULT: Enabled

When enabled, Windows will periodically instruct the storage device to commit data in the devices cache to the

non- volatile storage media. These periodic commands result in decreased overall system performance.

A user can choose to disable Windows write-cache buer ushing to restore system performance, allowing the

Intel

DEFAULT: Disabled

Windows write-cache buer ushing.

Note: If Windows write-cache buer ushing is enabled, Intel® RSTe write-back cache is disabled. To enable write-back cache on volumes, you must disable

Windows write-cache buer ushing.

The purpose of this section is to provide an overview of the memory

congurations for the HP Z4 G4 Workstation and to provide

recommendations to optimize performance.

• Single and dual rank 8 & 16Gb based DIMMs are supported

For the Intel Core i7-7800X, Core i9-7800X/XE, Core i7-9800 and Core i9-9800 Series Processors:

•8 GB and 16 GB PC4-2666-U 2666 MHz DDR4 Non-ECC Unbuered DIMMs

•Single and dual rank 8 Gb based DIMMs are supported

For the Intel Core i9-10900 Series Processors:

•8 GB, 16 GB, and 32GB PC4-2933-U 2933 MHz DDR4 Non-ECC Unbuered DIMMs

•Single and dual rank 8 and16 Gb based DIMMs are supported

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• 512 GB with Intel

Xeon

• 256 GB with Intel

Core

i9-10900X/XE Processor Family

• 8 memory sockets available

• 4 channels per processor and 2 sockets per channel

• Single-bit errors are automatically corrected

• Multi-bit errors are detected and will cause the system to immediately reboot and halt with an F1 prompt error

• By way of comparison, non-ECC memory does not detect or correct single-bit or multi-bit errors which can cause

• Command and Address errors are detected and will cause the system to immediately reboot and halt with an F1

System performance is largely based on the applications being used. Generally, to obtain the best performance, it is

• Load the memory modules in order of size, starting with the largest module and nishing with the smallest module.

• Each channel includes two DIMM sockets; black and white connector pairs represent a channel. The DIMMs

See gures below for loading order.

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* Not all features are available in all editions or versions of Windows. Systems may require upgraded and/or separately purchased hardware, drivers,

software or BIOS update to take full advantage of Windows functionality. Windows 10 is automatically updated, which is always enabled. ISP fees may

DISCLAIMERS

Core™ i7-X processor congs.

4

Core™ i9-X processor congs.

5

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of this technology. Performance and clock frequency will vary depending on application workload and your hardware and software congurations. Intel

®

LEARN MORE AT

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© Copyright 2019 HP Development Company, L.P. The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express warranty

statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein.

Intel, Xeon and Core are trademarks of Intel Corporation in the U.S. and other countries. All other trademarks are the property of their respective owner.