Dell XPS 730x

Dell XPS 730x in Stealth Blue with X-Panel

The Dell XPS 730x is an eXtreme Performance System for gaming and high-performance computing[1] released November 16, 2008[2] and ended life in August 2009.[1] The XPS 730 series was unique in that they had user-servicable non-proprietary standard ATX-size computer components that allowed the user to upgrade the components through an Exchange Program.[3]

History

Need history details based on XPS 700 "User Upgradable" series

Differences between 730 and 730x

There were a number of differences between the 730 and 730x series.

Component XPS 730 XPS 730x
CPU Types Intel Core 2 Quad Intel Core i7 (First-Generation)
Socket LGA 775 LGA 1366
Chipset Nvidia nForce 790i Intel X58
Theater Lighting Not available Standard on all models
Motherboard Tray No lip allowing for E-ATX and XL-ATX motherboards Has a re-enforced lip that must be removed to fit an E-ATX or XL-ATX motherboard

Warranty and Support

Dell warranty support will be available until August 2012.[4]

Dell stopped internal development support for the XPS 730x in August, 2009[5] and has not released any updated BIOS nor software since.

OEM Software

Amongst Dell's normal line of software installed, there were two pieces of software that was unique to the XPS systems.

Alienware AlienFX

AlienFX Software

The Alienware AlienFX application is Dell proprietary application used to control the LED "Zones" for lighting. One internal and four external zones were configurable to show 15 different colors (plus "black" which effectively turned off the LED for that zone). Once a configuration has been set, the configuration could be saved to a Profile.

The AlienFX application also had the ability to hook into a few 3rd party application events, such as New Mail notification from Microsoft Outlook's email client.

The AlienFX software is hardcoded to only run on the XPS 730x motherboard with BIOS versions 1.0.0 through 1.0.6.[6] Using a different motherboard or changing the BIOS (see below) prevents the software from installing and starting up.

Dell XPS Thermal Monitor

XPS Thermal Monitor Software

The Dell XPS Thermal Monitor application is a Dell proprietary application used to control a number of chassis devices. The three devices that can be manually controlled are:

Amongst direct control of these fans, the software is able to monitor additional devices. They are:

Using these sensors, the XPS Thermal Monitoring software is able to monitor these inputs and adjust the fans automatically. When the software is set to Automatic, the software itself does not manage the fan and water pump speeds. Instead, it signals the Master Control Board to monitor the inputs and adjust the speeds accordingly.[7]

There is also an option to override the automatic operations of the Master Control Board for the three devices listed above. Unchecking the Automatic configuration allows a user to manually set the speeds of the fan, or to build an custom monitor curve based on temp inputs.

The Thermal Monitor software is hardcoded to only run on the XPS 730x motherboard with BIOS versions 1.0.0 through 1.0.6. Using a different motherboard, or changing the BIOS (see below) prevents the software from installing and starting up.

Chassis

The aluminum chassis was built and assembled in Japan[8] and shipped overseas for installation of internal parts. The case is an ATX and BTX hybrid design that mounts the motherboard from the right-side of the case, up-side-down compared to normal ATX cases. This places the CPU at the lowest point in the case, which allows the CPU's fan to receive the coolest amount of air for overclocking.[9]

The internal space is segmented between an upper chamber and a lower chamber. The upper chamber houses four (4) 5.25" drive bays, two (2) 3.5" front-mounted bays for Dell USB accessories, four (4) 3.5" drive bays mounted transversely with a dedicated server-grade high-speed 80x25mm PWM fan, and the oversized Power Supply Unit. The lower chamber consists of two server-grade high-speed 120x38mm PWM fans mounted in the front in special fan housings that includes separate detachable shrouds, the Dell Master Control Board which monitors all inputs as well as controlling all system LEDs and Fans, CPU cooling assembly, and the motherboard assembly.

The physical chassis is also structurally different from the majority of PC cases and towers that use a stamped steel construction. The Dell XPS 730 and 730X chassis uses a sheetmetal skeleton frame as the core to give it structural integrity, with the outer upper, lower and left panels glued onto this frame. The outer panels are 2.5mm thick aluminum which creates a very robust and sturdy structure.

The XPS 730x chassis was available in three (3) colors:

In addition, there was an optional "X" side panel with clear Plexiglas allowing the internal components to be visible from the outside.

Fans

There are a number of fans located in the chassis, and depending on what model (H2C vs. non-H2C versions), different fans were used in different places.

These fans are usually considered server-grade because of their high static air-flows and Pulse-width modulation (a.k.a. PWM) regulation of speed.

Upper Chamber Fan

The upper chamber has only one fan, an 80mm x 80mm x 25mm PWM fan with general specifications of 12VDC, 0.275 Amps with a minimal airflow of 33 CFM (unknown max). It is used to cool the four HDD bays by drawing air over the front two, and push air over the rear two.

A number of different fans came in the XPS 730/730X systems in this position, but they generally all have the same measurements such as the Nidec MX940 M35613-35DEL2.

This is also one of the loudest fans in the system. Replacing it with an 80x80x25 PWM fan is usually a direct plug-n-play since there are a large number of these available.

Lower Chamber / Front Fans

The lower chamber has a number of different fans. The front-section consists of two 120mm x 120mm x 38mm axial PWM fans with general specifications of 12VDC, 1.4 Amps, 16.8 Watts, 4000RPM max, Airflow: 160 CFM, Static pressure: 0.883 IN H2O, dual-ball bearings.[10] A number of different fans also came in these positions, but generally they all have the same measurements such as the Nidec TA450DC.

The H2C's "Rear Fan"

This fan is actually used to cool the CPU's voltage regulator modules. It is mounted on the H2C's assembly and wired through the H2C connector.

The fan is a 60mm x 60mm x 20mm fan with the general specifications of Airflow: 12.4 - 18.0 CFM, Static pressure: 2.2 - 4.4 mm H2O.[11]

With the stock system, the system owner have control over the speed of this fan to limit the noise it generates.

Non-H2C "Rear Fan"

Unlike the name suggests, this fan is actually used to directly cool the CPU's heatsink. It is a 90mm x 90mm x 38mm fan.

The system owner is not able to control the speed of this fan since it is controlled by the master control board.

Note that with non-H2C systems that use this fan, it is often the loudest fan in the system. At system start-up, it immediately is set to 100% duty cycle (full speed) for several seconds while the system performs a number of self-checks.

Motherboard

The motherboard is Dell P/N P270J and uses the Intel X58 chipset. Primarily, its core features were:

PCI-E Configuration

The 36 lanes allows for up to 3-way SLI/Crossfire[6] native to the chipset. The PCI-E slots are assigned as follows:

The PCI-E Bandwidth Links when using multiple GPUs are as follows:[6]

PCI_E1 PCI_E3 PCI_E5
1 GPU x16 Unoccupied Unoccupied
2 GPUs[13] x16 Unoccupied x8
2 GPUs x16 x16 Unoccupied
3 GPUs[14] x16 x8 x8

In addition to the three (3) PCI-E x16 "green" slots, the two PCI-E x1 slots and the single PCI slot go through the Northbridge controller. The motherboard is a standard ATX size, and is rumored to be manufactured by MSI or Foxconn. It accepts standard ATX 24-pin power.

The OEM motherboard is the same motherboard as the Alienware Area-51 ALX motherboard.[15] The only difference is the BIOS. See BIOS versions below for updating to the latest Alienware bios to enable additional support for newer RAM and CPUs.

BIOS

The Dell XPS 730x BIOS is an AMI bios.[6]

Version 1.0.5

The last BIOS released from Dell was version 1.0.5. This version has a number of limitations, most notable:

A number of users have installed 12 GB (3 x 4GB DIMM sticks) with this bios version. However, while the BIOS will register the full amount of ram, memory errors will be generated when using 70% of more of physical RAM because of the tRFC limitation of 100.[6] DDR3 SDRAM memory sticks of 4 GB in size requires at least an tRFC setting of 122 or higher.[16]

A BIOS upgrade to Alienware A10 or higher is required to increase the rRFC limit to 150, which allows for 12 GB (3 x 4 GB) support, as well as enabling additional XMP Profile 1 and 2 support.[6]

Version 1.0.6

The last production machines sold by Dell, and replaced under warranty, shipped with version 1.0.6 in them.[17] This version was never released on Dell's website. It retains the same limitations as the 1.0.5, except the PCH voltage are now adjustable and some overclocking recovery options have been added.

BIOS Upgrades

List information about 1.0.6 forced upgrades, and Alienware A10 forced upgrades

Upgrading BIOS to Dell 1.0.6

List special information on how to install the non-released 1.0.6 version

Upgrading BIOS to Alienware A10

List information and known issues about upgrading to Alienware BIOS, how it is the same motherboard, and how to upgrade it to A10.

Motherboard Tray

Info about the special motherboard tray and ATX, E-ATX and XL-ATX 8-slot support.

Master Control Board (MCB)

Rather than having the control mechanism integrated into the H2C unit, the pump, fans and TEC are controlled separately by a Dell daughterboard, the Master Control Board (MCB). The MCB uses Enthusiast System Architecture (ESA) to monitor and control the pump, fans and TEC in addition to controlling the XPS LED lights, other fans, and sensors. The H2C cooling and LED lighting system cannot be reused in another computer case without the MCB or custom-made control circuits to take its place.

Nvidia System Tools

Because the MCB is based on Nvidia's ESA technology, it is open to be controlled via non-Dell software.[7] Currently the only software available is Nvidia's System Tools which is available as a plug-in for Nvidia's Control Panel that comes with every Nvidia driver install.

Using ATI Graphics Cards

The control software from nVidia will not install if no other nVidia products (such as a graphics card, chipset or drive controller) are present in the PC. The software can be installed if the motherboard uses an nVidia chipset, or if an nVidia graphics card is used as the primary display adapter. In a PC with an ATI/AMD graphics card as the primary display adpater, and no nVidia chipset on the motherboard, an option is to install a secondary graphics card with a nVidia GPU.

Front Temp Sensor

Need detailed information

Master Control Board Tray

Info about MCB tray and Fans mounting.

Power Supply Unit (PSU)

The Dell 1000 Watt PSU is an oversized (taller and wider) than standard ATX Power supply units, although it does use the standard ATX bolt pattern to secure it to the chassis. The PSU also has a detachable wiring harness allowing for removal of the PSU for replacement without having to disconnect all powered accessories.

Multi-GPU Support

The stock PSU comes with four (4) 6-pin connectors. Each pair is colored differently and each pair is on a dedicated 12V rail. This configuration easily supports two (2) GPUs with two (2) 6-pin power connectors each. To support three (3) GPUs, or two (2) GPUs with 8-pin power connectors, a person could use a combination of Molex connectors, or upgrade the PSU to an aftermarket unit (see upgrades below).

10-pin Master Control Board connector

The stock PSU comes with a proprietary 10-pin power connector for the Master Control Board. It is hardwired into the wiring harness. If changing the PSU, it is required to modify the new PSU to use this same 10-pin connector to power the Master Control Board for all LEDs, Fans and sensor inputs.

H2C Water Cooling

The XPS 730x uses H2Ceramic cooling, also often called H2C. It is a computer cooling advertised specifically as facilitating CPU overclocking. H2C is a two-stage Liquid/Thermoelectric (TEC) hybrid cooling system that combines a liquid-to-air heat exchanger, a thermoelectric fluid chiller, and control circuitry to optimize CPU cooling with minimal power.

Theater Lighting

Another Dell-exclusive only available on the XPS 730X systems was Theater Lighting. It consists of five (5) strategically placed super-bright white Light-emitting diodes powered by two (2) AA batteries that help system builders see inside of their case for maintenance. These normally stay off until the side cover is removed. When the cover is removed, the lights are turned on and remain on until the cover is placed back on. Since the lights operate on batteries, they remain active even if the power is disconnected from the system.

Aftermarket Upgrades

The Dell XPS 730 / 730X uses standard ATX components. Because of this, users are able to upgrade the internal components to newer aftermarket versions. Depending on the component being upgraded, some custom wiring may be needed.

Upgrading Motherboard

State the case is actually an 8-slot case, allowing for XL-ATX. Though the top 8th slot only allows for a single-slot width card to be installed and is an extremely tight fit with the chamber divider in the case.

ATX Form Factor

The Dell XPS 730X uses the industry standard ATX form factor making it easy to mount any aftermarket unit.

The motherboard tray can be modified to allow fitting of E-ATX or Extended ATX motherboards. E-ATX is not an industry standard, but its general definition is extending a normal ATX from 9.6 in (244mm) to something wider. It is not uncommon for some E-ATX boards to reach 11 in (274mm) in width. But all E-ATX motherboards should be confined to 12 in (305mm) in height, allowing them to fit the Dell XPS 730X motherboard tray.

Dell's Front Panel I/O Connector

A common concern when swapping motherboards with an aftermarket unit is the front panel I/O connector. This front panel connector for the Dell XPS 730 and 730X chassis uses an USB-like interface, though the pins are different for the front panel (power switch, power light, hdd light, etc.).

It should be noted that Dell used the industry standard (industry specification needs to be stated here) USB-like front-panel connector that is compatible with several mainstream motherboard manufacturers such as MSI, ASRock, EVGA and so on. The XPS 730/730X front panel connector is a direct fit and properly wired for these types of motherboards.

Other motherboard manufacturers do not use this USB-like interface and opt to use direct pinouts which require the installer to painfully wire each pin. For example, it is common for Asus to not use this common USB interface. If you attempt to use an Asus motherboard, you will be forced to wire the front-panel connector manually by disassembling the connector and using the Dell XPS 730X pinout guide for the front-panel I/O to figure out what pin goes where (pictures needed). There are some additional options, such as USB debugging pinouts that make it easier (picture and reference number needed).

Upgrading CPU

List info about support CPUs in 1.0.5-1.0.6, as well as Alienware A10 bios

Upgrading H2C Water Cooling Unit

List information about 120mm replaceable units

Upgrading GPUs

List upgrading on OEM mobo and PSU.

List full-card length support. E.g. ATI cards

List issues with Nvidia System Tools with ATI cards

Upgrading Power Supply Unit

Need info about 10-pin connector

Upgrading Fans

It is not generally needed to upgrade the OEM fans. All fans are of server-grade quality, being extreme high-speed fans that move a very generous amount of air. Just about no aftermarket fan can move as much CFM as the OEM fans, except other server-grade high-speed fans.

List info about Dell's 5-pin connector

Inform about Master Control Board's controller

Upgrading RAM

Reference information about 1.0.6 limitations above.

Upgrading Harddrives

SATA Revision 2.0 motherboard

List information about standards for case cooling that the XPS 730x complies with, allowing for hot Wester Digital VelociRaptors to be installed

References

  1. ↑ 1.0 1.1 As stated through Dell, Inc.
  2. ↑ "Wikipedia: Dell XPS."
  3. ↑ "Dell XPS 720 Red System; Details About the XPS 700 Exchange Program - Direct2Dell - Direct2Dell - Dell Community". En.community.dell.com. 2007-06-14. Retrieved 2012-01-03.
  4. ↑ Up to 3 years of support was available based on date of purchase. Dell stopped taking orders in August 2009.
  5. ↑ Attempted to contact Dell for confirmation
  6. ↑ 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 As confirmed by Eric Duncan in testing
  7. ↑ 7.0 7.1 Per development by Eric Duncan of the ESA and Nvidia's API, and also the monitoring of sensors listed above when application was running and not running.
  8. ↑ As noted per Japanese QA language stamping on the inside of the case
  9. ↑ Per Convection principals
  10. ↑ [Nidec Corporation|http://www.nidecamerica.com]
  11. ↑ [Vette Corp|http://www.wakefield-vette.com/resource-center/downloads/brochures/Fan-Product.pdf]
  12. ↑ Inserting a card into PCI_E5 switches this to x8 mode
  13. ↑ Recommended in the Dell owner's manual for better cooling.
  14. ↑ See OEM PSU limitations
  15. ↑ Confirmed by Dell Support Representative
  16. ↑ 16.0 16.1 Mushkin and Patriot representatives during support calls
  17. ↑ Confirmed by numerous users

External links