iXBT Labs - Computer Hardware in Detail






Iwill and Soltek Barebone Systems Review

It turned out that the barebone systems examined today come from companies whose models were reviewed before. Moreover, two of three models are very similar to the earlier tested products from Iwill and Soltek, that is why our permanent readers may find useful only examination of the Iwill ZPC. Those who are looking for "the same but with pearl buttons" can turn to the new variations of the old things. Thus, Soltek's new Qbic retains its excellent case but utilizes the Athlon XP which is not welcomed by barebone makers.

Iwill XP4-G

The Iwill XP4-G is almost identical to the XP4, except a bit altered face appearance and one peculiarity caused by the different chipset of the XP4-G mainboard. The current model has a pretty small (190x270x165 mm) cubic aluminum case with air vents on its sides. The front panel made of silvery speckled plastic isn't loud but a lot will depend on a 5" drive.

The functional elements on its face are the same though they changed their positions (this set of elements is the minimal standard for today): 2 USB (2.0) ports, line-out (for headphones), mic-in, power and Reset buttons. An external bay is covered with a metallic bracket waiting for you to replace it with a respective drive.

The backside remains entirely the same. Here you can find 2 PS/2, 1 LPT, 1 COM, 1 VGA, 1 LAN, 2 USB (2.0), 3 Audio. Now the big fan blows out air from the power supply unit (such unit is a very rare thing among barebone systems), and the small one directly cools the insides. There is also an output for the only expansion card.

The internal design is very simple: the power supply unit is pressed to the back panel, and the warm air goes out through vent holes on its sides. A small Delta fan is also attached to the back panel. The CD/DVD and hard drives (there are only two bays - 5" and 3" ones) are attached right to the mounts. It's really convenient because no racks are needed and the IDE cable placed among them lets avoid the problem of how to arrange the cables inside. But if the floppy drive is installed before the hard drive, you will have to demount the former to put the HDD inside. Unfortunately, the case can't house two internal bays but I wish this one should be a little higher so that the hard drive wouldn't pressed so tightly to the upper device.

The mianboard used in the Iwill XP4-G is based on the i845GE chipset. Beside the higher speed there appears one more difference between two Iwill's models which makes them supplemental rather than competing. As compared to the i845GV, the i845GE supports external AGP cards, that is why the only expansion slot in the XP4 is of the PCI standard, and the XP4-G has an AGP one (4x, only 1.5V cards). The board also supports processors with the FSB up to 533 MHz, DDR200/266/333 (only one slot!), 6 USB 2.0 ports (but there is place only for 4 of them), 6-channel ALC650 AC'97 codec and network Realtek 8100B PHY controller. In the scarce and very inconvenient WhizPro BIOS you can adjust memory timings and select its frequency, manually assign IRQs, change the FSB clock up to 250 MHz in 1MHz steps with flexible regulation of AGP/PCI bus frequencies.

As to the fans, we couldn't figure it out how we could set the threshold for the two rear fans to start up. Moreover, a temperature sensor on the mainboard is lacking or doesn't work. However, when we mounted the standard test cooler CoolerMaster CI4-7I53A (there is no CPU cooler supplied) the temperature of the monitored components didn't exceed the extreme values.

As you can see, even the Intel Pentium 4 3.06 GHz, the most efficient and hottest processor among supported models, paired with one of the hottest video cards based on the GeForce4 Ti 4600 didn't let down the cooler on the Iwill XP4-G.

Here are the brief characteristics of this barebone system that ships in a usual cardboard box with a handle.

  • Components and accessories: PC case, power supply unit, board, CD, user guide, ATA66 cable, power cable, screw
  • Format: cube
  • Dimensions: 190x270x165 mm
  • Bays: 1 internal 3.5", 1 external 5.25"
  • Power supply unit: Chyang Fun CWT-220FXC-P, 220 W (marking)
  • Board, chipset: Iwill XP4-G, Intel 845GE
  • Video: i845GE integrated graphics (excellent 2D quality up to 1024x768x32@100 Hz)
  • Audio: AC'97 codec ALC650
  • Network: 10/100 Mbit Fast Ethernet, Realtek RTL8100B
  • Expansion slots: 1 AGP (for full-size cards)
  • Connectors in front: 2 Audio (mic/headphones), 2 USB (2.0)
  • Connectors behind: 2 PS/2, 1 LPT, 1 COM, 1 VGA, 1 LAN, 2 USB (2.0), 3 Audio

Iwill ZPC

If you look at this model and its specs you will see that the Iwill ZPC belongs to a special class of miniature devices. If other barebone systems are actually just small copies of desktop models, the ZPC, like the EZgo MiniPC, is a conceptual model. Here a lot is offered in sacrifice, and the price grows up in proportion to deviation from the standards. What for such computer is needed will be discussed after its full examination. Just note that judging by its dimensions (184x263x54 mm) it's comparable to an ordinary internal CD/DVD drive.


It's encompassed into a tiny aluminum case with two figured plexiglas plates above and below. The case can stand upright. The latter is recommended in the manual, but on the photo you can see how stable the Iwill ZPC is, that is why you shouldn't place it on desktop. The miniature dimensions put forward the cooling issue. The air hole is only one (with a decorative air vent). Besides, there is only one output on the backside. There are no air vents on its sides probably to protect the mounting surface from hot air. The weight of this model is 4 kg at most.

The front panel houses 2 FireWire, 2 USB (2.0) ports, line-out and a mic-in, power and Reset buttons and a slim CD/DVD drive bay. Originally Iwill planned on a big choice of color combinations of the frontal surface and case, but then decided on only two versions: a black case with a slit-type drive (which is tested) and a silvery one designed for a drive with an in-out tray.

On the back are 2 PS/2, 1 COM (no second serial and parallel ports), 1 VGA, 1 LAN, 2 USB (2.0) and 2 audio connectors that double the front ones (only one input/output of the doublers works at a time). A round connector on the left indicates that the ZPC uses an external power supply unit (from Delta Electronics, 19V, 90W). The rear panel is attached with 4 screws; when it's unscrewed the contents can be drawn out as a single whole.

The heart of the computer is a mainboard with an affixed special daughter card with disc storage units. At first glance the insides are carefully designed, the only cable inside is used to connect the cooler!

All the connectors and buttons in front and behind are soldered out on the board (therefore it should be handled very carefully). 4 connectors looking like IDE ones are used to connect internal devices. The mainboard is built on the i845GV chipset (an analog of the i845G without an external AGP port), supports FSB up to 533 MHz and memory up to 266 MHz (only one module). The photos of the connectors perfectly show what peripherals can be supported. No expansion cards are certainly supported.

The computer is designed for one 2.5" hard drive (of the notebook PC type) and one slim-type CD/DVD drive. The drive is not supplied with the computer, but you can order it separately and it will match the front cover in color. The installation procedure is unusual: first you must press the hard drive to the special daughter card, move it over its interface connector and then fasten its backside with screws. The floppy drive installs the same way, only on the reserve side of the card. Then you must attach the daughter card to the mainboard, with all three connectors going into three "IDE connectors" on the board (the connectors are shown on the photo next to the hard drive). Since the hard drive is placed not higher than the plugs on the daughter card, the connection looks like a bridge, and the hard drive hangs over the chipset heatsink (affecting its thermal conditions).


The cooler comes from a noname company with a 70mm fan from Bi-Sonic. The aluminum heatsink 12 mm high is designed in the form of ramifying branches with a copper core in the middle. There are two clips that fasten it to the board. The fan draws the air taken from outside onto the sink, and its rotation speed makes only 2800-3000 rpm which (together with noiseless notebook-type disc storage units) maintains noise at a low level. This is the quietest barebone system among the tested models equipped with fans.

The cooler is pretty effective. But we tested it with the Pentium 4 1.8 GHz because it arrived in our lab with this processor, while the maximum permitted CPU is Pentium 4 2.53 GHz (however, it reached 45°C under load). Besides, we couldn't monitor the hard drive's temperature, but the threshold of 50°C looks like to be exceeded. It's quite possible that the potential overheating of other components inside the case made the developers limit the maximum CPU clock (the cooler might cope with a 3GHz model).

Finally have a look at the photo of the voltage changer card that is inserted into the last fourth "IDE connector" on the mainboard behind. In the BIOS (I hope no one would undertake overclocking) you can change memory timings and its frequency, manually assign IRQs, change the FSB clock up to 166 MHz in 1MHz steps with correct regulation of AGP/PCI bus frequencies.

Here are the brief characteristics of this barebone system.

  • Components and accessories: PC case, external power supply unit, internal voltage changer card, mainboard, daughter card for disc storage units, CD (without a printed manual which I hope will be supplied with production models), power supply cable, screws, matching optical drive (optional)
  • Format: flat box :)
  • Dimensions: 184x263x54 mm (with the plastic covers)
  • Bays: no
  • External power supply unit: Delta Electronics ADP-90FB, 90 W (marking)
  • Board, chipset: Iwill ZPC, Intel 845GV
  • Video: i845GV integrated graphics (excellent 2D quality up to 1024x768x32@100 Hz)
  • Audio: AC'97 codec ALC650 (stereo only)
  • Network: 10/100 Mbt Fast Ethernet, Realtek RTL8100B PHY
  • Expansion slots: no
  • Connectors in front: 2 Audio (mic/line-out), 2 USB (2.0), 2 FireWire
  • Connectors behind: 2 PS/2, 1 COM, 1 VGA, 1 LAN, 2 USB (2.0), 2 Audio (mic/line-out)

Soltek Qbic EQ3701M


The EQ3701M is encompassed into the same aluminum case (Shuttle G2) with a mirror cover on the face, like that on the EQ3000M. But since the mainboards used in these systems are different, the layout of connectors in front and behind is also different. The EQ3000M is not an entirely Soltek's solution since the case is made by Shuttle and reminds its XPC. However, we do not reproach it because usage of other's but successful idea is preferable for end-users.

The silvery power and reset buttons and black speckles of the ports match well the mirror surface. On the other hand, this mirror-like cover is made of plastic, that is why scratches and fingerprints are inevitable. Another problem is that the front panel will lose its attractive look with the installation of 3" and 5" drives. So, keep in mind that the EQ3701M will look less effective in the real life. Also note that this model of the Qbic series doesn't have a twin with a mat-white surface (indexed W), but it's possible that in future such variant will be also available. The collection of connectors is not outstanding, but there is everything you may need, and all connectors except S/PDIF-Out double on the backside (it lets you choose the place of connection). So, in front it has S/PDIF-out, 2 standard audio connectors, 2 USB (2.0) and 1 FireWire. Two external 5" bays distinguish Soltek's Qbic EQ3xxx models among all barebone systems on the market. The EQ3000 has a twin with a single 5.25" bay, but the today's hero has only one variation.

The backside has a traditional design for Shuttle/Soltek barebone computers. It can differ only in connectors. Here we can see PS/2 keyboard and mouse ports, 1 COM, 2 analog monitor outputs, S-Video output, 2 FireWire, 2 USB (2.0), mains and 3 standard audio connectors. The mainboard also has LPT and second COM ports, but you have to find the cables for them yourselves (they can be placed either on a standard panel placed instead of an expansion card or inserted into holes on the backside). Finally, the Soltek EQ3701M has a power supply connector, a small fan on the power supply unit, a big fan and two slits for expansion cards.

The arrangement of the components is identical to any Shuttle's barebone PC, and entirely coincides with the EQ3000M. The installation is very simple: you don't have to screw or unscrew anything. It's just desirable that you put the drives into the rack when it's out of the case (there are only two screws).

For better ventilation all standard cables should be stretched along the panels which have special plastic clips for them. Two ATA66 and one FDD cables are cut into stripes and tightened into one thin bundle.

It was strange to find ATA cables with two connectors each (one cable is designed for only one device) - Soltek stubbornly keeps to such a strange policy of completing its PCs, which have 2 5" bays as a distinguishable factor (2 optical drives + 1 hard drive = 3 devices). Of course, you can buy a narrow cable separately or make it out of a usual wide one, but owners of expensive systems have the right to count on something more.

The cooling system consists of a CPU cooler supplied and a quality 80mm fan from ADDA with temperature control support for the backside. (Note that Shuttle models come with coolers based on the I.C.E. heat-pipe technology where the CPU cooler and the fan on the backside make a single whole.) We couldn't find out who made the CPU cooler and we can't give you its specs, but it has an all-copper heatsink, a well polished base, and 6 fastening teeth (a screwdriver needed). The cooling effectiveness is very high.

The hard drive's and system's temperature remains acceptable even with the hot GeForce4 Ti 4600 based card and at the maximum CPU load. The CPU's temperature looks dangerous because the maximum allowable Barton's temperature of 85°C was almost reached (the BIOS turns off the system when an assigned temperature threshold is reached). Why do we consider such cooler system sufficient? The BIOS offers three modes of operation of the CPU's fan which differ in the speed of rotation. We set the quietest mode with the frequency of 2400-2500 rpm in the standby mode and up to 2900 rpm under load (by the way, the other fan inside the PC case rotated at 1800 to 2200 rpm and it was very quiet). Besides, we used the processor with the highest heat generation degree among all processors supported by the EQ3701M board. That is why, the cooling system has a solid reserve in case of high air temperature or other potential problems.

Like all other barebone makers Soltek uses its own mainboards, and in this case it is Soltek B7A-F based on the NVIDIA nForce2-GT chipset. The board supports FSB clock up to 333 MHz (up to Barton 3000+ inclusive), up to 2 GB DDR200/266/333/400 (2 DIMM slots only), external AGP 8x video accelerators, 6 USB 2.0 ports, 3 FireWire ports, 10/100 Mbit Ethernet and 6-channel sound (at the expense of the APU included into the south bridge with the Dolby Digital support and with Realtek ALC650 AC'97 codec). Besides, the integrated video accelerator simultaneously supports two analog monitor-outs (nView technology) or a TV-out (S-Video) instead one of them, and demonstrates more or less good performance in games (the details are a bit later). One AGP and one PCI slots for full-sized cards are standard for barebone computers from Shuttle and Soltek. But the overclocking features of the EQ3701M are not standard: you can change the FSB clock up to 250 MHz in 1MHz steps, CPU, chipset and AGP voltage (up to 1.85, 1.8, 1.8 and 2.8 V respectively), CPU clock ratio up to x22, memory timings, memory clock and PCI/AGP clock in a wide range. The chipset's rich potential is thus entirely realized.

Here are the brief characteristics of this barebone system that ships in a beautiful cardboard box with a handle.

  • Components and accessories: PC case, power supply unit, CPU cooler, board, CD, user guides, 3 cables (2 ATA66 and 1 FDD), power cable, screws
  • Format: cube
  • Dimensions: 215x295x230 mm
  • Bays: 1 internal and 1 external 3.5", 2 external 5.25"
  • Power supply unit: Enhance Electronics ENP-2320, 200 W (marking)
  • Board, chipset: Soltek B7A-F, NVIDIA nForce2-GT
  • Video: NVIDIA nForce2 IGP integrated graphics
  • Audio: NVIDIA nForce2 APU (MCP-T) + ALC650 AC'97 codec
  • Network: 10/100 Mbit Fast Ethernet, NVIDIA nForce2 MAC + ICS 1893 PHY
  • Expansion slots: 1 AGP and 1 PCI (for full-size cards)
  • Connectors in front: S/PDIF Out (TosLink), 2 Audio (mic/headphones), 2 USB (2.0), 1 FireWire
  • Connectors behind: 2 PS/2, 1 COM, 2 VGA, 1 TV-Out (S-Video), 1 LAN, 2 USB (2.0), 2 FireWire, 3 Audio



  • Processors:
    • Intel Pentium 4 3.06 GHz (23x133 MHz), Socket 478
    • Intel Pentium 4 Northwood 1.8 GHz (18x100 MHz), Socket 478
    • AMD Athlon XP 3000+ (13x166 MHz = 2167 MHz), Socket A

  • Mainboards:
    • Iwill XP4-G on the i845GE chipset in the Iwill XP4-G
    • Iwill ZPC on the i845GV chipset in the Iwill ZPC
    • Soltek B7A-F on the NVIDIA nForce2-GT in the Soltek EQ3701M

  • Memory: 2x256 MB PC3200(DDR400) DDR SDRAM DIMM TwinMOS, CL 2 (used as DDR333 for Iwill XP4-G and Soltek EQ3701M and as DDR266 for Iwill ZPC)
  • External video card: Palit Daytona GeForce4 Ti 4600
  • Hard drive: IBM IC35L040AVER07-0, 7200 rpm


  • OS and drivers:
    • Windows XP Professional SP1
    • DirectX 9.0a
    • Intel Chipset Software Installation Utility 4.30.1006
    • Intel Application Accelerator 2.3
    • Intel Extreme Graphics Driver 13.1
    • NVIDIA UDP 2.42
    • NVIDIA Detonator XP 40.72 (VSync=Off)

  • Test applications:
    • VirtualDub 1.5.1 + DivX codec 5.05 Pro
    • WinAce 2.2
    • Gray Matter Studios & Nerve Software Return to Castle Wolfenstein v1.1
    • Croteam/GodGames Serious Sam: The Second Encounter v1.07

The performance tests are actually useless, because if you want to estimate their speed you should check it up in the reviews of these chipsets. Boards based on the same chipset but produced by different companies can have different speed, but the gap can be 2-3% at most. Moreover, the scores of each contestant will be shown on a separate diagram to that no one could reproach us of speed comparison.

We are going to use the tests where we can estimate the performance drop caused by the integrated video core (it's just interesting to figure out to what degree the processor simply heats up air). Also, we will thoroughly test them in 3D games where an integrated core doesn't always have an alternative, and absolute figures are very important because they answer the question: can I play or not?

Finally we will test each model separately in a great deal of benchmarks in order to reveal possible artifacts in performance and check the overall operability with all integrated controllers enabled.

The Soltek has brilliant scores (the dual-channel memory controller of the nForce2 looks like to be specially created to demonstrate superiority of the chipset in such tests). The Iwill XP4-G has more modest scores by 4-10%. (This test turns to be useless for the Iwill ZPC because its integrated video core doesn't have an alternative.)

The speed in games is not a strong point of the i845GE: without an external video card the Iwill XP4-G can be used only for a slide-show in gaming resolutions even with the most powerful supported processor. However, you can even run at 800x600.

The i845GV is slow as well, and a faster processor wouldn't help it either. Taking into account that the video system of the Iwill ZPC can't be improved, this barebone PC leaves the rows of contenders.

The Soltek EQ3701M guarantees over 50 fps in 1024x768x32 in the games (though it was coupled with the fastest processor and used the dual-channel memory mode). Anyway, you can make this computer playable even without an external card.


The Iwill XP4 and the Soltek EQ3701M are good computers that pleasantly extend the row of products of their companies. The Iwill ZPC could be recommended as a replacement for an average office PC thanks to its small dimensions and attractive appearance... if it were not its price (around $300 at the time of writing this article on our local market; it's $100 over the price of more functional models of the XP4 series of the same company). Can it be used as a multimedia center?.. The ZPC has neither TV-out nor outputs for 6-channel sound (only stereo). Also, it lacks for 3D performance to be a good home system. Besides, a DVI-out is not exotic today. Thus, this expensive product repeats the positioning of another ultra-small PC: this is an image model for those who value appearance and quietness most of all.

In closing, here is a brief list of the most typical strong and weak points of each barebone system.

Iwill XP4-G


  • Easy assembling/disassembling
  • USB 2.0 support
  • High-profile AGP card supported


  • No PCI slots
  • Only 1 memory slot
  • The hard drive gets very hot, and the inside temperature seems to grow up much

Iwill ZPC


  • Stylish design
  • Miniature dimensions
  • USB 2.0 support
  • FireWire support
  • No cables inside
  • Good CPU cooler supplied
  • Quiet cooling system


  • Difficult to assemble/disassemble
  • No AGP or PCI slots, no expandability at all
  • Only one memory slot
  • No TV-out, S/PDIF, 6-channel sound or other attributes for a separate media center
  • Very high inside temperature, including that of the hard drive
  • High cost of the system and its components

Soltek Qbic EQ3701M


  • Stylish design
  • Easy assembling/disassembling
  • Two 5.25" drives supported
  • High-profile AGP and PCI cards supported
  • Decent 3D (for integrated graphics)
  • USB 2.0 support
  • FireWire support
  • Quality integrated audio processor (not codec!)
  • Optical S/PDIF-out
  • Integrated TV-out (S-Video)
  • Analog output for a second monitor
  • Parallel and second serial ports supported
  • Pretty good CPU cooler
  • Quiet cooling system at a good performance level
  • Narrow cables supplied
  • (?) Rich overclocking capabilities


  • PC case doesn't match in color with FDD/CD/DVD drives
  • Cables supplied can't be used for 3 IDE devices

Serguei Pikalov (peek@ixbt.com)
Dmitry Mayorov (destrax@ixbt.com)

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