The Lenovo D20 Laptop is a full-sized professional grade workstation, and it probably won’t win any beauty awards. It’s a humungous black metal and plastic tower, about 17 by 8 by 24 inches (HWD). Lenovo D20 ThinkStation on Rental and Sale in Bangalore, Chennai, Hyderabad, Pune, Mumbai, Coimbatore and Kochi.

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The ThinkStation D20 bears a striking resemblance to the S20 we reviewed last year, but is noticeably larger. It comes housed in a similar black case, but this time the case measures 8.25 in. x 23.62 in. x 17 in. (WxDxH), with a removable handle that adds two more inches to its height. As noted in past reviews, we like the handle, which makes it much easier to move the 52-lb. computer.


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The rear panel provides eight more USB ports as well as a 9-pin serial port, two RJ45 LAN ports, six audio jacks, S/PDIF input and output connections, a second 1394 port, and an eSATA connection. Pressing a small lever on the tool-less chassis is all it takes to remove the side panel to access the well-organized interior.

Inside, lenovo d20 specs the two CPU sockets were fitted with a pair of 2.67GHz Intel X5550 CPUs hidden beneath large heat sinks and cooling fans. Each of these quad-core CPUs has 8MB of smart cache and is rated at 95 watts of thermal design power (TDP). Lenovo offers the lenovo thinkstation d20 drivers with CPUs ranging from the 1.86GHz Xeon E5502 up to the 3.2GHz Xeon W5580.


two Intel Xeon (Quad Core) X5550 2.67GHz


8GB DDR3 SDRAM at 1333MHz


two Western Digital 500GB Caviar SATA 7,200 rpm drives in a RAID 0 array


NVIDIA Quadro FX 4800



The lenovo thinkstation d20 extended ATX form factor motherboard has capability for 12 DIMM sockets. Our evaluation unit came with 8GB installed as four 2GB DDR3 PC3-1060 1333MHz memory modules. The thinkstation d20 motherboard ram will be able to accommodate up to 192GB of RAM once 16GB DIMMs become available.

The lenovo d20 review motherboard provides a total of six expansion slots: two PCIe x16 slots, a PCIe x4 slot, a PCIe x1 slot, and a pair of standard PCI adapter card slots. One of the x16 slots on our evaluation unit was filled with an NVIDIA Quadro FX4800 graphics accelerator equipped with 1.5GB of memory. This large, ultra high-end board covered one of the PCI slots and was so wide that we questioned whether it would be possible to install a second FX4800, although Lenovo does offer that option. With two large graphics adapters installed, the only slots left accessible would be the PCIe x1 and one of the PCI card slots. Lenovo also offers less-powerful graphics boards, including the entry-level NVIDIA Quadro NVS290 as well as ATI boards including the Fire Pro V7750.

The internal drive cage provides five 3.5-in. drive bays with quick-release acoustic-damping rails. Our evaluation unit came equipped with a pair of 500GB Western Digital Caviar 7,200rpm SATA drives configured in a RAID 0 array; they appeared as a single 1TB drive. While that provided lots of storage space and can boost performance, it’s not the safest configuration: if either drive fails all data will be lost. The BIOS also supports RAID 1, RAID 5, and RAID 10 and the motherboard includes five SATA connectors. Other SATA as well as SAS drives are also available.

The 1060W power supply provides more than enough energy and enough additional power connectors to handle any expansion option. In spite of lots of fans, including those on the CPUs, rear panel, power supply, graphics card, and behind the hard drive bay, the ThinkStation D20 was virtually silent after its initial startup.

Cutting edge performance
Lenovo pre-installed the 64-bit version of Windows Vista and also sent us a pair of drives that we could swap out, so we could repeat all of our benchmark tests using Windows XP 64-bit Edition. Once again, Lenovo proved that its engineers know how to combine and configure first-class components to deliver cutting-edge performance. The ThinkStation D20 equipped with the NVIDIA Quadro FX4800 graphics board turned in some of the fastest SPEC viewperf scores we’ve ever recorded on a number of the datasets, with the top SolidWorks dataset numbers coming while running Vista.


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