Capabilities: 4 DIMM slots, up to 128 GB, (Optional Extra 4x DIMM slots with CPU riser - Max 256GB) DDR4 RDIMM. 4 DDR3 memory slots. Memory: Integrated Dual 48K configurable transmit receive FIFO Buffers. 5” Bays 13. 1 motherboard only supports Xeon v1 CPU's, which have ram clock speeds up to 1600MHz. 99. 99. Popular items in this category. 06-29-2022 09:34 AM. No Xeon E5-4669 v4 showed up at all. The HP Z640 is a desktop computer that comes with a single installed processor. With. T4P01UT#ABA — HP Workstation Z640 - MT - 4U - 1 x Xeon E5-2630V4 / 2. (Not available when 2nd processor/memory module is installed) Slot 2: PCI Express Gen3 x16 Full-height, Full-length (with extender) Slot 3: PCI Express Gen2 x4 with open-ended connector* Full-height, Full-length (with extender) QuickSpecs HP Z640 Workstation Overview DA - 15080€€€Worldwide QuickSpecs — Version 2 — 10/1/2014 Page€ 4For details on the supported memory configurations on the HP Z440 Workstation, please refer to the System Technical Specifications - System Board section of this document. 0 kg (33. 3GHz and in a z420 / E5-1650 v2 6-core @ 4. It has a 2013 boot block date. As I expected this should work fine to maximum WS machine performance. 50 inches. Product specifications. com. The controllers support the following drive types and max link speeds: Controller Number of ports Max link speed. To accept the new setting, press F10. 6GHz 8 Core - 64GB DDR4 RAM - LSI 9217 4i4e SAS SATA Raid Card - 2TB (2X New 1TB SSD Enterprise) - NVIDIA GEFORCE GTX 1660 6GB - PSU - Windows 10 PRO (Renewed) :. Safety & Comfort Guide User Guide. Refurbished HP Z640 Mid-Tower Workstation - 1x Intel Xeon E5-2699 v3 2. 94. 5 · 1. Brand. RAM Memory Maximum Size: 16 GB: See more. Optional vPro® supportOptional NVIDIA® RTX™ GPU15. Tried another GPU (RTX 2060) and changed the original setting that messed me up. Each processor supports up to 4 channels of DDR4 memory. 0. Read more. HyperX Alloy Origins - Mechanical Gaming Keyboard - HX Red (US Layout) HyperX Gaming Keyboards: 4P4F6AA: View product : HyperX Alloy Core RGB - Gaming Keyboard (US Layout) 1 ACCEPTED SOLUTION. For details on the supported memory configurations on the HP Z440 Workstation, please refer to the System Technical Specifications - System Board section of this document. DIMMs should be equally distributed across all four memory channels for optimal performance. Memory. 16GB DDR4-2133 ECC Registered RAM. 32GB DDR4-2133 ECC Load Reduced (LR) RAM. Memory RAM for Z640 Rackable Minitower Workstation. If an 2400 MT/s capable CPU is used in the system, the maximum speed the memory runs at is 2400 MT/s, regardless of the specified speed of. (1 Review) $34. KingstonMemoryShop stocks DDR4 8GB, 16GB, 32GB and 64GB memory upgrades for your HP Z640 [Workstation] Desktop to boost performance and capacity. N1G35AA. It looks like HP is no longer producing it. 14 products. RAM: 128GB ECC DDR4. All was well. Visit our HP Z440 Gaming Computer Blog Page:HP Z640 Workstation Overview c04400040 t DA s 15080 Worldwide t Version 28 t June 5, 2017 Page 2 6. Intel Xeon E5-1650 v3 3. Operating System Driver Support: Windows Vista 32-bit SP1, Windows Vista x64 SP1, Windows XP 32 bit professional, Windows XP x64 . Connector: RJ45. nota: Para obtener más información sobre las configuraciones de memoria admitidas en la estación de trabajo HP Z640, consulte las Especificaciones técnicas del sistema -. 256GB (4x64GB) DDR4 PC4-2400 PC4-19200 Load Reduced 4Rx4 Memory Upgrade Kit - HP. my hp z640 - single cpu e5 2620 v4 - Ram 8x4=32G - vga m2000. 2 + DVI-I DL: Connectivity:Upgrade Power Supply to support the Graphics Cards below: HP Z440 700W Power Supply PN: 758467-001. The HP Workstation design team has taken a proactive approach (beyond industry regulations) to recyclability and selecting materials that reduce the risk to the environment. The Z640 925W. Regulatory, Safety, and Environmental Notices User Guide. Experience the quietFor details on the supported memory configurations on the HP Z440 Workstation, please refer to the System Technical Specifications - System Board section of this document. 256GB. HP Z640 Workstation (Refurbished) Intel Xeon E5-2600 v4 Series. ) Maximum configuration: 21. Operating System: Microsoft Windows 10 (64-bit) Good Day, The fan assembly fans (from part 642166-001) of my Z820 are constantly running at full speed. 2. MKTLLC StoreVisit Store. HP. The only constraint is that 3090 asks for 2-8pin connectors with max 375W consumption. Level 1. For details on the supported memory configurations on the HP Z640 Workstation, please refer to the System Technical Specifications - System Board section of this document. Quadro 4200 4GB. 16GB DDR4-2133 ECC Registered RAM. More speed with little fuss: Installing and testing RAM modulesWorkstation z Z640. Eligible to handle the largest and the most complex graphics. 2 enable/ Secure Boot enable /. 54 MB. System: HP Z640 Workstation. For details on the supported memory configurations on the HP Z640 Workstation, please refer to the System Technical Specifications - System Board section of this document. NET! 🇺🇸. The HP Z640 also supports DDR4 memory and NVME. #1. 08 MB. 92 Sale price $415. Each processor supports up to 4 channels of DDR4 memory. Server Type Specification Price Buy Now; HP Z640 Workstation (Basic): Used HP Z640 Workstation which supports up to Single Intel® Xeon® E5-1600 v3/v4 or E5-2600 v3/v4 Processors / 1 x Intel Xeon Processor E5-2620 v3 (2. Contact Cloud Ninjas today to help compare your options. Memory Modes. HP Business PCs - HP Client Security Manager and Windows 11 compatibility. Windows 32-bit operating systems, memory above 3 GB may not all be available due to system resources. To realize full performance at least one DIMM must be inserted into each channel. I had 64GB in my Z420 - this was a 2013 bootblock / 'v2' machine and I was running 8x8GB 1866Mhz DDR3 ECC Registered modules. add the video card - fans on high for the video card, low for the case, a few minutes later all fans on high. $49. HP Z640 specifications. 91. Storage. 32GB DDR4-2133 ECC Load Reduced (LR) RAM. Each processor supports up to 4 channels of DDR4 memory. 4) Load bios to default setting (because UEFI boot option greyed out for me), I selected TPM 1. HP Z640 Tower Server - Intel Xeon E5-2690 V3 2. If an 1866MHz capable CPU is used in the system, the maximum speed the memory will run at is 1866MHz, regardless of the specified speed of the memory. ADD + 16GB MEMORY/RAM To Any HP Workstation LINKED BELOW+ 64GB MEMORY/RAM To Any HP Workstation LINKED. Xeon E5-2620 v3 Intel Bench 66%, 6,890 samples. About this item. When i plug nvme 970 evo plus in hp turbo z adapter g2 into slot 5 , fan rear run >2500 prm, very noise. 1. Configuration. Intel. Here is the Maintenance and Service Guide for the workstation. The speed that the memory runs is determined by the processors and is limited to 2133 MHz for the Haswell processor generation. Large L3 cache for superior. For details on the supported memory configurations on the HP Z640 Workstation, please refer to the System Technical Specifications - System Board section of this document. 8. Presently the machine has an E5-2620v2 with 32gb @1600MHz (4x8) of Memory. HP Z640 Workstation . Free delivery and free returns with a 100% money back guarantee. Intel N100 Max 3. All of our servers are refurbished to a very high standard. CHASSIS AND SYSTEM. ) Maximum configuration: 21. Processor Brand. (all core maximum turbo steps, one core. Your email address will not be published. ONLY registered and. 3% back in HP Rewards. 0 kg (37. Find low. 1. Get HP Workstation Z640 memory upgrades and get ️ Lifetime warranty Great savings Factory original memory just like HP does @Memory. A z640 / 2X E5-2667 v3 8-core /Quadro K4200 /128GB RAM /. Enter your serial number to check your warranty status. Free delivery and free returns with a 100% money back guarantee. 2 PCIe x16 Gen 3 Slots 10. The system will not operate properly if you install unsupported DIMMs. Technical white paper HP Z640 Workstation 5 Memory technology The HP Z640 Workstation introduces support for DDR4 2400 MHz Registered DIMMs. - SkillBench (space shooter). note: For details on the supported memory configurations on the HP Z640 Workstation, please refer to the System Technical Specifications - System Board section of this document. The HP Z6 G4 is the successor to the HP Z640 personal workstation. 7. It's easy to buy HP. 99. 2GHz, boosting to 3. We have a wide range of workstations, including HP Z440, HP Z640, HP Z820, HP Z420, etc. (1) Refurbished HP Z640 Desktop Workstation, Intel Xeon E5-2640 E3 @2. Add. Microsoft Windows 10 (64-bit) View All (2) Category: Others; I have the same question. AU $450. Rear Flip-Up Handle 15. 5625. It is easy to see if your "Ambient Air Sensor" is misreading too high/low. DIMM Support: 4GB to 32GB. Each processor supports up to 4 channels of DDR4 memory. Read honest and unbiased product reviews from our users. 54 TBSporting a pair of Intel Xeon E5-2667 v3 processors, HP's Z640 offers 32 virtual cores with Hyper-Threading enabled. Specs HP Z640 Tower Intel Xeon E5 v3 E5-2620V3 16 GB DDR4-SDRAM 256 GB SSD Windows 7 Professional Workstation Black J5E42UP PCs/Workstations Intel® Xeon® E5-2620 v3 (2. 949. DVD-RAM: 45S. 2TB (2X 600GB SAS New HDD) - NVS 310 512MB - 925W PSU - Windows 10 PRO (Renewed) at Amazon. For fixing high RAM usage simply follow the below steps. 4,8 TB. For details on the supported memory configurations on the HP Z640 Workstation, please refer to the System Technical Specifications - System Board section of this document. Specs HP Z640 Tower Intel® Xeon® E5 v4 E5-2680V4 64 GB DDR4-SDRAM 256 GB SSD Windows 7 Professional Workstation Black X3F46UC PCs/Workstations Intel® Xeon® E5-2680 v4 (2. 16GB DDR4-2133 ECC Registered RAM. Memory layout (slots x size) 2 x 8 GB. Maximum capacity the HP Z640 can offer physically is 4x7. 79x. When I used 8GB or 16GB DDR4 memory: 4x 8GB 1Rx4 PC4-2400T-R or 4x 16GB 2Rx4 PC4-2133P-R. Maximum RAM Capacity. The types of memory supported on a HP Z620 are: • 2 GB and 4 GB PC3-12800E 1600MHz DDR3 Unbuffered ECC DIMMs • 4 GB and 8 GB PC3-12800R 1600MHz DDR3. 2TB (2X 600GB SAS New HD - NVS 310 512MB - 925W PSU - Windows 10 PRO (Renewed)Find your system on our list of over 175,000 computers. 73 MB. The CPUs determine the speed at which the memory is clocked. - Reports are generated and presented on userbenchmark. The HP Z640 also supports DDR4 memory and NVME. Ports/slots/bays. HP Z840 Graphics Card Install – EVGA RTX 2080 Ti. I was hoping to move up to an E5-2697v2 - or explore the option of having 2xE5-2697v2's with a CPU. Product: HP Z640. Buy Kingston HP Z640 Workstation Memory RAM & SSD upgrades. 32 GB. ram speed is set by the motherboards chipset and cpu installed, lower end cpu's will have a slower ram speed limit compared to a highend cpu. - RAM tests include: single/multi core bandwidth and latency. samsung m386b4g70dm0-cma4qm. Specification page for HP Z640 WorkstationThe recently acquired z640 (E5-1650 v3 / 16GB HP 2133 ECC Reg / ZTurbo Drive 512GB NVMe/ GTX 1060 6GB / HGST Enterprise 6TB) W10)will start and run very well on the 1X 16GB HP-labelled RAM module. In this video we'll show you how to install Memory/Ram in to an HP Z440 Workstation. 6 GB GDDR6: 4 GB GDDR6. Whereas the max RAM the. Maximum internal memory supported by processor. HP Z640 SSD Configuration Guide. Total Memory Slots. 16GB DDR4-2133 ECC Registered RAM. Configure. System Lenovo ThinkStation P700 HP Z640 Workstation Hard disk Vendor and model number Western Digital® WD5000AAKX-0 Toshiba DT01ACA0 Number of disks in system 2 2 Size (GB) 500 500 Buffer size (MB) 16 32 RPM 7,200 7,200 Type SATA 6. The Z640 925W. The answer is yes, that it likely will, and I'd not hesitate to test that. 6GHz 8 Core - 16GB DDR4 RAM - LSI 9217 4i4e SAS SATA Raid Card - 1. The Z640 925W. 128 GB. ONLY registered and. The beeping most likely is because either the new module is bad or the wrong type of memory. GDDR6. System Processor Total memory Baseline configuration Each processor supports up to six channels of DDR4 memory. 100 Desktop; 1000 Series Notebook; 1005; 100B; 110 Desktop; 120 Desktop;. Quantity. Connector: RJ45. Crucial Memory and SSD upgrades - 100% Compatibility Guaranteed for HP - Compaq HP Z640 Workstation. (came with mine at time of purchase) and max out the RAM slots with 16GB sticks for $150 bringing this beast to a 24 core, 128GB mem virtual lab. 5GHz 6 Core - 64GB DDR4 RAM - LSI 9217 4i4e SAS SATA Raid Card -. Maximum: 11. 1[1] provides incredible expansion in a small footprint. On the Create New Array screen, select the primary disk for the IM volume (the disk with the data you want to mirror. Specification page for HP Z640 Workstation These HP Workstations can be used for high end graphic intensive applications, 3D modeling, creative works, engineering purposes, architecture, video editing. Concentrate on your work using a workstation that is whisper quiet. Memory clock speed: 2133 MHz. With 64GB (8 x 8GB) of DDR4-2133 memory our machine is filled to the brim and set up to handle some sizeable visualisation models. Brand. The Computer has 16 Slots (8 Slots per CPU) to install memory, already with basic factory installed standard memory installed. Up to 4 Memory Slots Up to 256GB DDR4 RAM; Up to 2x Graphics Cards 925W Power Supply; CREATE LINK. 5mm. According to nVidia specs the RTX 2018 is 215-225W max power consumption also. IBM Logo; Registrieren; Anmelden; Having it to support existing signout flows. Crucial Memory and SSD upgrades - 100% Compatibility Guaranteed for HP - Compaq HP Z640 Workstation. CPU: Intel Xeon E5-2620 v3 1st Bench 63%, 2,624 samples. 16GB DDR4-2133 ECC Registered RAM. 6GHz Intel Xeon Broadwell E5-1650. note: For details on the supported memory configurations on the HP Z640 Workstation, please refer to the System Technical Specifications - System Board section of this document. 5 Max Turbo Frequency (SR2NA) How much Memory should I get? The base line should be a. SDH. $199. Each processor supports up to 4 channels of DDR4 memory. Refurbished HP Z640 Mid-Tower Workstation - 1x Intel Xeon E5-2683 v3 2. 17. 1. Type in “Regedit” and then hit Enter. 250-1000 Nits. Skip to Content Skip to Main Menu. The Z640 includes a stock 925W Power Supply, that is ideal for high end GPU upgrades. NET. ram speed is set by the motherboards chipset and cpu installed, lower end cpu's will have a slower ram speed limit compared to a highend cpu. Resolution steps below: "511- CPU fan not detected" and/or "523-CPU fan (2) not detected. 8GB DDR4-2133 ECC Registered RAM. HP Workstation Z640 Memory Upgrades Guaranteed Compatible. For details on the supported memory configurations on the HP Z640 Workstation, please refer to the System Technical Specifications - System Board section of this document. The single processor Z640 has 4 DIMM Slots supporting up to 512GB DDR4 ECC Memory. Popular items in this category. Whether you are looking to configure your Workstation z Z640 yourself or upgrade it, equipping a device with sufficient RAM is one quick and easy way to ensure smoother and more efficient. 5 GHz), 32GB DDR4, 256GB SSD, DVD±RW, Gigabit LAN,. 48 GB. Each processor supports up to 4 channels of DDR4 memory. Level 12. If a 2400 MT/s capable CPU is used in the system, the maximum speed the memory runs at is 2400 MT/s, regardless of the specified speed of the. SSD 512GB 2. We also have the 16Gb version. 4ghz - 16gb Ram - 2gb Nvidia GPU) $335. For best Z840 Workstation Computer performance use the maximum amount of 256GB RDIMM / 2 TB LRDIMM (2 CPU), fill all the slots with the max allowed memory per slot for your Computer. Storage configurations and RAID Its architecture introduces several new functionalities and technologies. Available for 2-day shipping 2-day shipping. 925W, 90% Efficient Power Supply 16. Operating System: Microsoft Windows 10 (64-bit) I recently purchased a HP Z640 with an e5-2620v3. 0. I measured 80dB. Memory technology The HP Z640 Workstation introduces support for DDR4 2133 MHz Registered DIMMs. The HP Z640 Workstation featuring Windows 8. 99. Supports up to 256GB with two processors. 32GB DDR4-2133 ECC Load Reduced (LR) RAM. Expand your capabilities with HP’s Z640 Workstation offering powerful performance, whisper-quiet computing, and. Manuals. Remember, those are averages and there are E5-1650 v4's nearly at nearly 2300. Maximum Memory: 256GB: Memory. FHD, WUXGA, or WQUXGA. With up to 8 memory DIMMs, up to 4 internal hard drives, optional Thunderbolt™ 2,[4] and the HP Z Turbo Drive, you get storage, performance, and the freedom to create. What is the warranty on these memory?If you are considering switching, or upgrading to the HP Z620, make sure you buy the Rev. 2 Adapter, a PCIe card which mounts the 960 Pro. DDR4-3200MT/s • 8GB Module Capacity • 8Gb Die Density • RDIMM • 1 Rank x 8 • PC4-25600 • CL=22 • Ext Timing 22-22-22 • 1. . HP Workstation Z640: Total Memory Slots: 8: Maximum Memory: 256GB: Memory. Arrives by Fri, Nov 10 Buy HP Z640 Tower - 2X Intel Xeon E5-2630 V3 2. Using HP's DDR4 SmartMemory with an appropriate processor, and optimized memory configuration can achieve memory speeds of up to 2400MHz. Each processor supports up to 4 channels of DDR4 memory. 2 GHz),. note: For details on the supported memory configurations on the HP Z640 Workstation, please refer to the System Technical Specifications - System Board section of this document. 08-23-2017 11:21 PM. Crucial Scanner. Enter model or choose from the list below. Max # DIMMS: 8x32GB. search; India. Why may there be various speeds of HP Workstation Z620 memory? Some servers often have various configurations and versions. On the RAID Disk column for this disk, and then select Yes. 40 56. Configure Your HP Z640 Workstation . Maximum Memory: 48GB: Memory. Each processor supports up to 4 channels of DDR4 memory. Here is my steps. Product details. The HP Z640 Workstation has all the base components to be converted in to a high end gaming computer. 7: 23. The Z640 is a single Processor workstation with possibilities for 4x 2. Memory was not recognized in any other slot. Maximum internal memory supported by processor. Those with exceptionally complex datasets are able to buy a machine with a maximum of 256GB (8 x 32GB DIMMs). Corsair Dominator Platinum RGB 32GB (2 x 16GB) DDR5 6200MHz Desktop. 6GHz 12 Core 32GB DDR4 RAM LSI 9217 4i4e SAS SATA Raid Card 1. When used with a single processor, the Z640 offers 4DIMM slots supporting a memory up to 512GB and of up to 1TB memory maximum using dual processors to improve the system performance. Maximum Memory: 256GB: Maximum Memory Per Slot: 32GB ECC RDIMMs: Number Of Memory Sockets: 8: Device Specifications; Make & Model: HP Z440 [Workstation] Device Type:For details on the supported memory configurations on the HP Z840 Workstation, please refer to the System Technical Specifications - System Board section of this document. 768 GBPage 50 is where the info about memory modules starts with the type and then how to add them, so the computer will work properly. Max Speed: 2400MHz. HP Z840 NVMe M. Operating System: Microsoft Windows 10 (64-bit) The Z640 rear fans are running 2500RPM and they are very loud. In some countries or regions, HP may provide a printed warranty in the box. The better value is the Xeon E5-1650 v4: 6C@3. 25” Bays 12. 2TB (2X 600GB SAS New HD - NVS 310 512MB - 925W PSU - Windows 10 PRO (Renewed): Servers - Amazon. Look at Chapter 1, Hardware overview, Page 14, in the section titled "Graphics cards", for all of the specifications on cards that are compatible with the motherboard. if a 1067 MHz-capable CPU is included in the system, the maximum speed at which the memory will run is 1067 MHz regardless of the specified speed of the memory. I am not sure where I could find the maximum supported ram for each slot. HP Z640 CPU 2 Riser, Fan & Heatsink £122. 6GHz in Turbo Boost. NET! 🇺🇸5y. 00 (48 Offers) Free Shipping. com. What HP Workstation Z440 memory speed is supported? DDR4-2133 and DDR4-2400. What HP Workstation Z620 memory speed is supported? DDR3-1600 and DDR3-1866. Find full product specifications and compatibility information for your HP Z640 WorkstationWindows 11 has a minimum memory requirement of 4 GB. 53 GHz, 4 MB cache, 1066 memory,. Report back with the results. @60 Hz. HP Z640 Tower Server ;. HP Z230 Tower Workstation enhance storage capacity with six available drive bays including a 2. com. Free shipping! | Black Friday deals start now! The z620 first version has a maximum of 12 RAM slots, 8 on the motherbaord and 4 on the 2nd CPU riser board, supporting a maximum of 96GB RAM. • The HP Z640 is a step up into advanced system configurations. Contact Cloud. The fan plug-in socket for that device is already built into the Z640 motherboard just like it is for the Z440 motherboard. It's easy to buy HP Workstation Z600. 2 Internal 3. Plan for the future and avoid re-qualifying devices every year, saving you serious time and money. Processor Brand. . For more details see the Intel® Turbo Boost Max Technology 3. Level 1. 32GB DDR4-2133 ECC Load Reduced (LR) RAM. txt) or read online for free. Maximum Memory. 22 MB. Memory slots: 4x DIMM. 8GHz) / 16GB ECC / GTX 1060 3GB/ Samsung M. Max Resolution (DP) 4096 x 2304 @ 60 Hz 4096 x 2304 @ 60 Hz 4096 x 2304 @ 60 Hz 4096 x 2304 @ 60 Hz 4096 x 2304 @ 60 Hz. HP Z640 is a compact tower form factor, but is more versatile and expandable than the HP Z440 and is positioned below the HP Z840. IBM WebSphere Portal. Proper individual DIMM capacityAmazon. The Z640 only has 4 memory sockets soldered onto its motherboard whereas the Z440 has 8. Operating System: Microsoft Windows 10 (64-bit) I purchased an a HP second CPU module in order to use a upgrade my Z640 to a dual-CPU system. 7680 x 4320. 5” Bays 13. I already have matching processors. Intel Gigabit CT Desktop NIC. Operating System: Microsoft Windows 10 (64-bit) I recently purchased a HP Z640 with an e5-2620v3. HP Z440, Z640, and Z840 Workstation Series - Maintenance and Service Guide. "512-Rear. 0GHz Max Turbo, 10MB Cache, 140W TDP . note: For details on the supported memory configurations on the HP Z640 Workstation, please refer to the System Technical Specifications - System Board section of this document. Restart the. NET. It features four DIMM memory slots, allowing for a maximum memory clock speed of 2133 MHz. I can set the speed to maximum in bios, so PWM works. Refurbished HP Z640 Workstation E5-2690 v3 2. Would like to improve performance and thinking of replacing the CPU without changing RAM. 4GB DDR4-2133 ECC Registered RAM. 16GB DDR4-2133 ECC Registered RAM. Start tapping the Esc key BEFORE starting the PC and then press the start button. 00. Maximum RAM Capacity. 8. 5Ghz 32GB Ram 512GB NVMe M4000 925W W10P. Intel Xeon W3503, 2. Intel Core E5-2630V3. Crucial Memory and SSD upgrades - 100% Compatibility Guaranteed for HP - Compaq HP Z640 Workstation. 8. 00 (7 Offers) Free Shipping. Connector: RJ45. NEW | HP Workstation Z640 2x Xeon E5-2623V4 32GB Ram 256GB Dual SSD K420 Win10PrCrucial Memory and SSD upgrades - 100% Compatibility Guaranteed for HP - Compaq HP Z640 Workstation. For best Z440 Workstation Computer performance use the maximum amount of 256GB (2CPU), fill all the slots with the max allowed memory per slot for your Computer. Each processor supports up to 4 channels of DDR4 memory. For Size Comparison:Buy HP Z640 PC Desktops & All-In-One Computers and get the best deals at the lowest prices on eBay! Great Savings & Free Delivery / Collection on many items. HP Z640’s are an Optional Dual socket Xeon based workstation. Generally, maximum memory performance is achieved by evenly distributing total desired memory capacity across all operational channels. It is enumerated as a PCI device and transfers data between system memory and SATA devices. 4 GHz), 16GB DDR4,. If an 1866MHz capable CPU is used in the system, the maximum speed the memory will run at is 1866MHz, regardless of the specified speed of the memory. 5″.