Enterprise SSD Endurance Explained: DWPD, TBW, and Choosing the Right Drive
"Use enterprise SSDs" is correct advice — and incomplete, because the category spans drives rated for a few...
HP Z640 compact dual-socket workstations in Doha: Intel Xeon E5-2600 v3 or v4 processors, eight DDR4 ECC slots for up to 256 GB, a 925 W supply and two PCIe x16 slots in a 171 mm wide minitower. Tested, and delivered across Qatar from Doha stock.
The Z640 is the compact dual-socket member of HP's Z440, Z640 and Z840 workstation generation, built on the Intel C612 chipset with LGA2011-3 sockets. It takes one Intel Xeon E5-1600 v3 or v4 processor, or one or two E5-2600 v3 or v4 processors, with the second processor and its four DIMM slots carried on a plug-in riser module. HP rates the chassis at 4U when racked, and it is only 171 mm wide, so it gives two-processor throughput in the footprint of a single-socket tower. It suits CAD, rendering, simulation and engineering analysis where the software scales across cores but desk space or rack space is limited. ServerDove stocks complete Z640 systems in Doha, typically with a Xeon E5-2600 v4 processor, DDR4 ECC memory, SSD storage and an NVIDIA Quadro card, and can source other builds and parts on request.
HP describes the Z640 as a rackable minitower in hematite brushed aluminium and HP black. It has an integrated front handle and a rear flip-up handle, tool-less access to the expansion cards, memory and system board, and a dedicated 9.5 mm slim optical bay. The front panel carries the power button, a drive activity LED and four USB 3.0 ports, the topmost with charging capability. The same chassis is used for single-processor and dual-processor builds; the difference is whether the second CPU and memory riser is fitted, which also takes away the top PCIe x1 slot.
The QuickSpecs list three processor families. A Z640 built with an E5-1600 series processor cannot take a second processor; only E5-2600 series systems can be expanded to two, and both processors must be identical. HP supplied the second processor as a kit containing the riser module, the processor and its heatsink, and states that upgrading the first processor (CPU0) is not supported by HP. Two v4 examples below are the models most often seen in refurbished units.
| Family | Sockets supported | Cores per processor (datasheet range) | Memory speed |
|---|---|---|---|
| Xeon E5-1600 v3 | 1 only | 4 to 8 | Up to 2133 MT/s |
| Xeon E5-1600 v4 | 1 only | 4 to 8 | Up to 2400 MT/s |
| Xeon E5-2600 v3 (Haswell-EP) | 1 or 2 | 4 to 18 | Up to 2133 MT/s |
| Xeon E5-2600 v4 (Broadwell-EP) | 1 or 2 | 4 to 22 | Up to 2400 MT/s |
| Processor | Cores | Base clock | Memory speed | TDP |
|---|---|---|---|---|
| Xeon E5-2620 v4 | 8 | 2.1 GHz | 2133 MT/s | 85 W |
| Xeon E5-2630 v4 | 10 | 2.2 GHz | 2133 MT/s | 85 W |
| Xeon E5-2640 v4 | 10 | 2.4 GHz | 2133 MT/s | 90 W |
| Xeon E5-2650 v4 | 12 | 2.2 GHz | 2400 MT/s | 105 W |
| Xeon E5-2680 v4 | 14 | 2.4 GHz | 2400 MT/s | 120 W |
| Xeon E5-2690 v4 | 14 | 2.6 GHz | 2400 MT/s | 135 W |
| Xeon E5-2697 v4 | 18 | 2.3 GHz | 2400 MT/s | 145 W |
| Xeon E5-2699 v4 | 22 | 2.2 GHz | 2400 MT/s | 145 W |
Lower-numbered parts such as the E5-2603 v4 and E5-2609 v4 run memory at 1866 MT/s and have no Turbo Boost. High-clock parts such as the E5-2637 v4 and E5-2643 v4 give fewer cores at 3.4 to 3.5 GHz, which suits single-threaded CAD work better than an 18-core part.
Eight DDR4 slots in total: four on the system board for the first processor and four on the optional riser for the second. Only ECC registered (RDIMM) and load-reduced (LRDIMM) modules are supported, and the two types cannot be mixed. Slots belonging to a processor that is not installed must be left empty, and a two-processor system with memory on only one processor is not a supported configuration.
| Module type | Capacities listed | Maximum system memory |
|---|---|---|
| DDR4 ECC RDIMM | 4 GB, 8 GB, 16 GB | 128 GB with 8 x 16 GB |
| DDR4 ECC LRDIMM | 32 GB | 256 GB with 8 x 32 GB and two processors |
HP lists DDR4-2133 and DDR4-2400 registered option kits for this platform. Memory runs at the lower of the module rating and the processor's supported speed, so 2400 MT/s modules only reach that speed behind an E5-2600 v4 or E5-1600 v4 processor. Each processor has four memory channels, so four matched DIMMs per processor gives the full bandwidth. ServerDove carries compatible registered modules in the server memory range.
The QuickSpecs group the supported cards into professional 2D (NVIDIA NVS 310, NVS 315 and NVS 510), entry 3D (NVIDIA Quadro K420, K620 and P600, AMD FirePro W2100), mid-range 3D (Quadro K1200, K2200, M2000 and P2000, FirePro W4300 and W5100, Radeon Pro WX 4100), high-end 3D (Quadro M4000, M5000, M6000 24 GB, P4000 and P5000, FirePro W7100, Radeon Pro WX 7100) and ultra 3D (Quadro P6000 24 GB). Most cards can be fitted in pairs, but the Quadro M5000 and M6000 are limited to one card each in this chassis. The power supply provides two graphics power cables, and the two PCIe Gen3 x16 slots take full-length cards with the extender. The Quadro M2000 fitted to our stocked configuration is a single-slot mid-range card. Other cards are available in the graphics cards collection; send us the model you plan to use and we will confirm power and slot fit.
The Z640 has two internal 3.5-inch bays with acoustic dampening rails and two external 5.25-inch bays. A third and fourth 3.5-inch drive each take one external bay through an adapter; a third and fourth 2.5-inch drive share one external bay in a 2:1 carrier. The system board has six SATA 6 Gb/s ports with integrated RAID 0, 1, 10 and HP's RAID 0 Data (boot drive plus a two-drive stripe), and RAID 5 is listed among the factory-integrated options.
| Drive type | Maximum drives | Capacities listed | Controller |
|---|---|---|---|
| 3.5-inch SATA 7200 rpm HDD | 4 | 500 GB to 4 TB, 16 TB total | Integrated SATA |
| 2.5-inch SATA SSD | 4 | 128 GB to 2 TB | Integrated SATA |
| 2.5-inch SAS 10K HDD | 4 | 300 GB to 1.2 TB, 4.8 TB total | Add-in SAS card required |
| 2.5-inch SAS 15K HDD | 4 | 300 GB, 600 GB, 2.4 TB total | Add-in SAS card required |
| HP Z Turbo Drive and G2 (M.2 NVMe on a PCIe card) | Up to 4 via Quad Pro | 256 GB, 512 GB, 1 TB | PCIe slot |
| Intel 750 Series PCIe SSD | 1 | 400 GB, 800 GB, 1.2 TB | PCIe slot |
The SAS options are the LSI 9217-4i4e 8-port 6 Gb/s card and the LSI 9270-8i RAID-on-chip card with an optional iBBU09 battery. HP's build rules did not combine PCIe SSDs with a SAS controller or SAS drives, and PCIe SSDs cannot be used in a boot RAID set. Standard 2.5-inch SATA SSDs, as fitted to our stocked unit, are the simplest upgrade for an existing machine.
| Slot | Type | Notes |
|---|---|---|
| 1 (top) | PCIe Gen2 x1, open-ended | Half-length; not available when the second CPU module is fitted |
| 2 | PCIe Gen3 x16 | Full-length with extender; primary graphics |
| 3 | PCIe Gen2 x4, open-ended | Full-length with extender |
| 4 | PCIe Gen3 x8, open-ended | Full-length with extender |
| 5 | PCIe Gen3 x16 | Full-length with extender; second graphics card |
| 6 | PCI 32-bit/33 MHz | Legacy PCI, full-length with extender |
Open-ended connectors let a longer card sit in a shorter slot at the lower link width. Rear ports: four USB 3.0, two USB 2.0, two PS/2, one RJ-45 Gigabit Ethernet on the integrated Intel I218LM controller, audio line in and line out, and a rear power button. A serial port is available through an optional bracket cabled to the board. Inside there is a 2x5 header for two USB 2.0 ports and a 2x10 header for one USB 3.0 port. Optional cards listed include the Intel I210-T1 and I350-T4 network adapters and an HP Thunderbolt 2 card.
One tool-free 925 W supply rated at 90% efficiency, wide-ranging with active power factor correction, operating from 90 to 269 V AC at 47 to 66 Hz. It carries two graphics power cables. There is no redundant option and no lower-wattage variant listed for the Z640, so the same supply covers every configuration from a single E5-1600 processor to two 145 W E5-2600 v4 processors with two high-end cards.
| Form factor | Rackable minitower, 4U in a rack |
|---|---|
| Height | 442.9 mm |
| Width | 171.45 mm |
| Depth | 464.8 mm to the service panel; 473.3 mm to the PCIe retainer clips |
| Weight | 15.0 kg minimum, 17.0 kg typical, 21.8 kg maximum configuration |
| Operating temperature | 5 to 35 °C |
| Operating humidity | 8% to 85% relative, non-condensing |
HP shipped the Z640 with Windows 10 Pro 64-bit for Workstations, Windows 10 Pro with downgrade rights to Windows 7 Professional 64-bit, Windows 10 Home 64-bit (single-processor systems only), Windows 7 Professional 64-bit or Windows 8.1 Pro 64-bit, or with the HP Installer Kit for Linux covering Red Hat Enterprise Linux 6.6 and 7, SUSE Linux Enterprise Desktop 11 and Ubuntu 14.04. Windows 7 and 8.1 Enterprise, RHEL Desktop 6 and 7, and SLED 11 SP3 and 12 are listed as supported. Later releases such as Windows 11 are outside HP's published support for this platform; ask us before buying if you need a particular operating system.
Our Z640 systems are refurbished and tested before they are listed, and are held in Doha, so delivery across Qatar is typically one day. Each unit is covered by the ServerDove warranty, and an extended warranty can be quoted on request. The stocked configuration pairs a Xeon E5-2680 v4 with 32 GB of memory, a 1 TB SSD and a Quadro M2000; if you need a second processor, more memory, a different graphics card or a dual-processor build, tell us the workload and we will quote it.
The Z640 sits between the single-socket HP Z440 and the full-size HP Z840; the wider HP workstations range covers all three. Installation and base configuration are available as a service, business customers can request quotations for bulk orders, and you can reach us on WhatsApp (+974 5521 2108), by email at sales@serverdove.com or through the contact page.
Same generation, same C612 chipset and the same E5-2600 v3 and v4 processors. The Z640 is a 171 mm wide minitower with eight DIMM slots, up to 256 GB of memory, four drives, two PCIe x16 slots and a 925 W supply. The Z840 is a full tower with sixteen DIMM slots, up to 1 TB of memory, five 3.5-inch or eight 2.5-inch drives, three PCIe x16 slots and a choice of 850 W or 1125 W supplies. Choose the Z640 when space matters and the Z840 when memory, drives or GPUs do.
The Z440 is the single-socket model of the same generation, with one LGA2011-3 socket, eight DIMM slots and a 700 W supply. The Z640 adds a second processor on a riser module, which brings the second set of four DIMM slots and lets it use the E5-2600 series. If your software scales across many cores, the Z640 is the step up; for single-threaded CAD an E5-1600 v4 Z440 or Z640 gives the same result at a lower cost.
Only if the machine was built with an E5-2600 series processor. Systems with an E5-1600 series processor cannot take a second CPU. The upgrade needs HP's second CPU and memory riser module, an identical processor and its heatsink, and it occupies the top PCIe x1 slot. Send us the current processor model and we will quote the matching parts.
Up to 256 GB, which needs two processors, all eight slots and 32 GB load-reduced DIMMs. With registered DIMMs the listed modules are 4, 8 and 16 GB, giving 64 GB per processor. RDIMMs and LRDIMMs cannot be mixed, and only ECC memory is supported. Fill four matched modules per processor for full bandwidth.
Yes, through HP Z Turbo Drive cards, which hold an M.2 NVMe SSD on a half-height PCIe card, and the Quad Pro carrier that takes up to four modules. The Intel 750 Series add-in card is also listed. There is no M.2 slot on the system board itself, and HP did not combine PCIe SSDs with the SAS controller options. SATA SSDs fit the standard 2.5-inch bays.
HP's list runs from NVIDIA NVS and Quadro K-series cards up to the Quadro P5000, P6000 and M6000 24 GB, plus AMD FirePro W-series and Radeon Pro WX cards. Two PCIe Gen3 x16 slots and two graphics power cables allow a pair of most cards; the M5000 and M6000 are limited to one. For a card that is not on HP's list, tell us its length and power connectors and we will check the fit rather than guess.
The Z640 was introduced in 2014 and HP's last QuickSpecs revision dates from 2018, so it is no longer a current product. Drivers and documentation remain available, and parts are widely stocked. For a firm answer on HP service for a specific serial number, ask us and we will check before you buy.
Yes. Systems are held in Doha and delivery across Qatar is typically one day. Installation, cabling and base configuration are available as a service, and business customers can ask for a quotation for several units. Hardware is covered by the ServerDove warranty, with extended cover quoted on request.
وثائق الشركة المصنّعة لهذه المنصة. تُفتح الملفات في تبويب جديد.
"Use enterprise SSDs" is correct advice — and incomplete, because the category spans drives rated for a few...
"Refurbished" describes a process, not a guarantee. A properly refurbished server has been diagnosed, tested and verified component...
Cabling is the one network decision you can't undo — a switch is swapped in an afternoon, but...
A UPS is judged entirely on a day it's never been tested. Two mistakes cause most failures: sizing...