Logic Supply LGX AG150 Fanless Mini PC

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INTEL DN2800MT MAINBOARD


The Intel DN2800MT inside the Logic Supply LGX AG150 system.

The Intel DN2800MT board defines almost every aspect of the system's performance and capabilities. Its Atom CPU is a 1.86 GHz dual-core with hyperthreading, so the performance should be reasonably snappy. It is nicely featured with six USB 2.0 connectors (two onboard headers are unused), two PCI Express Mini Card expansion slots (one accepts only a half height card), and onboard connector for embedded DisplayPort in case the back panel HDMI and VGA ports are not enough. One of the most important features is the built-in DC power converter, which accept inputs of 8V~19V, making it very versatile. Audio aficionados should note that even though the board has a S/PDIF header, the system is not equipped with either optical or coax connection for it on the back panel. The board is normally equipped with a low profile passive heatsink for the CPU, but this heatsink is not used in the LGX AG150 system.

 Intel DN2800MT Specifications
Processor 1.86 GHz Intel Atom N2800 (dual core)
Chipset Intel NM10
System Memory 2 DDR3 800/1066 SO-DIMM; Up to 4 GB
Graphics Integrated Intel GMA 3650 (640 MHz)
Expansion Slots PCI Express x1
PCI Express Mini Card (full height - can be used as mSATA)
PCI Express Mini Card (half height)
Onboard Serial ATA 2 SATA (3 Gb/sec.) connectors (one multiplexed with mSATA)
Onboard USB 8 USB 2.0 (2 high-current/fast-charging)
Onboard LAN Intel 82574 10/100/1000
Onboard Audio Intel HD Audio (2+2 channel)
Back Panel I/O 2 USB 2.0 high current ports
2 USB 2.0 ports
1 VGA port
1 HDMI port
1 LAN port
2 Audio jacks
1 12-volt DC jack (8 V to 19 V)
Onboard I/O Connectors 4 USB 2.0 via 2 pin headers
2 SATA connectors
2 RS-232 COM pin headers (AT/Everex)
1 LPT pin header
1 Front panel audio pin header
1 Front panel pin header
1 Embedded DisplayPort (eDP)
1 Fan pin header
1 LVDS connector (18/24-bit, single-/dual-channel)
1 LVDS inverter
1 SATA power connector
1 S/PDIF output
1 In-chassis stereo speakers output
1 DMIC digital microphone input
1 Front panel HD Audio/AC’97
BIOS 8 Mb Flash with Intel Platform Innovation Framework for EFI PnP
System Monitoring & Management Power Management, Wake on USB, Wake on keyboard, Wake on mouse, Wake on LAN, Wake on serial port, Fan speed control, Voltage range monitoring
Operating Temperature 0ºC ~ 50ºC
Form Factor Thin Mini-ITX (17 x 17 cm, <20 mm z-height)
Includes Driver CD
2 Backplates (one ATX full height, one ATX half height)
2 SATA cables
Quick reference guide

You may recall our recent review of the Jetway NF9C-2600, another mini-ITX board that uses a Cedar Trail Atom CPU and the NM10 chipset, like the DN2800MT. A key aspect of the Cedar Trail Atom is an integrated GPU, a PowerVR SGX 545 from Imagination Technologies. Intel claims the new graphics performance is twice that of the previous Atom, Pine Trail, but driver development seems to be lagging. The platform currently supports only 32-bit version operating systems, and we experienced a lot of screen flickering with the Jetway running Windows 7 32-bit, at least with the late-2011 drivers available at the time. This is an issue we'll investigate here.

LGX AG150 DETAILS

Accessories included with the sample system included the Windows 7 disc, two antennae for WiFi, a pair of bolt-in brackets for permanent secure mounting with necessary screws, four stick-on rubber feet, and a Seasonic external 60W AC/DC adapter with AC cable. The Seasonic SSA-0601D-12 runs on 100~240VAC, outputs 12VDC, and is rated for Level 5 efficiency as per the International Efficiency Marking Protocol (rev. Oct. 2008, PDF), referenced by Energy Star. This rating describes efficiency at 49~250W output to be at least 87%. Figuring out what the efficiency for such a device is at <49W load requires a more mathematically inclined mind than mine; the formula is there in the linked PDF. It's obviously going to be lower than 87% as the load is reduced. In any case, this is the most efficient class of external AC/DC adapters available to consumers today.


Logic Supply LGX AG150 package contents.


LGX AG150 back panel: Two WiFi antennae ports, DC power port, two standard USB 2.0 port and two higher current USB 2.0 ports, LAN port, VGA and HDMI ports, and analog speaker & mic ports. The unused cutout on the top right corner is for an AUX12V 4-pin jack, for applications where that is a preferred interface.


The front panel offers a small, neat power switch, two more USB 2.0 ports and two RS-232 ports.


The two brackets for permanent installation are easy to mount.


With the cover off: Note violet colored TIM on CPU heat block. The use of an SSD in this type of system is a natural. Note how the power for the SSD comes via a connector on the mainboard.

Almost all small fanless cases utilize heatpipes to funnel the heat from components to heatsinks integrated into the case exterior. In the ML200 case, no heatpipes are used. The original CPU heatsink is replaced with a solid block of aluminum, sized so that it just touches the underside of the cover when the cover is secured. A small, thin piece of rubbery thermal interface material goes between the heat block and ribbed aluminum cover. When the cover is secured, the rubbery TIM gets compressed, allowing good transfer of heat from the CPU into the casing, which enables convection cooling. The ribbed casing top does most of the heat disspation, but as the U-shaped cover is also firmly screwed to the u-shaped bottom half, the entire aluminum casing helps with cooling.



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