The OptiPlex GX620 packs a lot of power into a fairly small minitower case.
With a 3.6-GHz Pentium D 960 dual-core processor and 1GB of 533-MHz DDR2 RAM, the GX620 broke the bank for performance, scoring an amazing 10,523 and edging the tricked-out Alienware system.

In terms of power consumption, the GX620 proved full of surprises. It had the most efficient idle power consumption rates in the review. Idle, the GX620 took up only 83 watts per second. It remained efficient while in action working, spending only 102 watts on our Excel chart and 398 watts opening applications, which put it well above average.

Of course, its feature set couldn’t touch that of the MJ-12 7550a from Alienware, but no office system really needs to. The GX620 came to us with an 80GB SATA drive—a bit small for high-end applications, perhaps, but more than enough storage space for wider deployment—and spinning at a high-speed 10,000 RPMs.

The GX620 Mini-Tower has plenty of expansion space, including two PCI slots, a full-height PCIe card slot filled with an ATI Radeon x600 PCIe x16 graphics card plus a smaller PCIe x1 slot. The Small Form Factor GX620 model, understandably, has room for only half-height expansion cards. Unfortunately, the Radeon x600 card requires an included adapter cable/dongle to connect to your monitor. The Radeon graphics card doesn’t have the usual VGA or DVI connectors on it, so you must use the dongle to connect monitor(s) to the proprietary connector on the graphics card. This is inconvenient, to say the least. One positive is that the video card supports dual displays, which is very useful for business.

Review By Hardwarecentral

Unlike the ultra-small case, it makes room for an internal, 275-watt power supply instead of a laptop-style external brick. It also holds twice as much memory (up to 4GB of DDR-2/533) and has expansion slots — one PCI Express x16 for a graphics upgrade and one PCI for older I/O cards, although both are low-profile or half-height slots. Our test system filled the PCIe slot with a 128MB ATI Radeon X600 SE card, as a step up from the 945G chipset’s Graphics Media Accelerator 950 integrated video.

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Review By Itreviews

The first thing you notice about the new DT chassis - apart from the fact that it’s not finished in Dell black but a pleasant shade of dark metallic grey instead - is that it can either be set up as a normal desktop or, if space is at a premium, stood on its side as a thin mini-tower.

The front fascia contains a panel in which sit two audio and two USB 2.0 ports (the rear panel contains another six USB ports) and something Dell calls DirectDetect; an LED panel that displays hard drive activity, network function and other systems status.

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Review By Reviews.Cnet

All four OptiPlex GX620 case designs share the same dull black-and-gray design and blunt, squared-off front panel. But at least you can tuck the small-form-factor and ultra-small-form-factor cases out of view if you use Dell’s nifty optional telescoping LCD-monitor stand, which we received as part of our review system.

Our test system, running Windows XP Pro, included a USB keyboard and optical mouse plus a 17-inch LCD monitor, the Dell UltraSharp 1704FPT. It also included a CD-RW/DVD-ROM combo drive and a floppy drive. You can opt for a double-layer DVD burner or a basic CD-ROM drive, but Dell does not offer an optional flash-card reader.

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Review By Pcpro.co.uk

In fact, the three cases that make up the GX520 range - Small Form Factor (SF), Desktop (DT) and Mini-tower (MT) - are also used in the GX620 range, but the GX620 gets a pint-sized fourth member too called the Ultra Small Form Factor (USFF).

Combining both series gives you four chassis and seven basic models to choose from, with image and BIOS compatibility throughout. The GX620 devices, with their bigger designation number, are the high achievers of the family. The difference, says Dell, is that the GX520s are for deployment as mainstream PCs, with perhaps a three-year lifespan before disposal, whereas the GX620s, with more complex motherboards higher specifications and better upgrade possibilities, are destined for more demanding environments and longer deployment.

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Review By Pcmag

The overall system response and performance is fairly good. Business Winstone scored 21.8 points while Multimedia Content managed 29.7 points. The webpage rendering in PCMark05 managed an impressive 3.05 pages seconds. The file decryption test managed a impressive bandwidth of 74.07 MB/s. The memory intensive performance could have been better overall, but was held back but the single channel (512MB) memory, not particularly a negative in our view as it does leave an option of upgrading the memory. Well spaced out keyboard with large keys is a joy to use and this turned out to be a really efficient PC on the whole. In our view, the Dell OptiPlex GX620 is one of the most impressive and professionally built Business PCs we have come across.

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