The Compaq Evo D51C Technical Specifications

By Andrew Tennyson

Though it came with many options, the Dc5100 included no monitor.
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The Compaq Evo D51C is a convertible miniature tower desktop computer sold as part of Compaq’s Evo 510 series of products. The company marketed the Evo 510 line toward the corporate and small business market. The computer came with the Windows XP Professional operating system and a three-year manufacturer’s warranty. The Evo 510 D51C has since been discontinued.


The D51C measures 17.7 inches tall, 6.6 inches wide and 16.8 inches deep. Standard versions of the computer weigh approximately 26 pounds before optional upgrades and accessories. The D51C has a 220-watt power supply, carbon silver chassis and five total drive bays, including a pair of 3.5-inch internal ATA hard drive bays, two 5.25-inch external half-height bays and one 3.5-inch floppy disk drive bay. The D51C features the Intel 845G chipset. Compaq sold the computer bundled with a restoration CD, power cord, PS/2 keyboard and PS/2 mouse.

Processor, Memory, Storage

Base versions of the D51C feature an Intel Pentium 4 processor with a clock speed of 2.0 GHz, 256KB of Level 2 cache and a 400 MHz front-side bus. Compaq offered upgraded versions of the D51C with Pentium 4 processors with clock speeds of up to 2.5 GHz, 512KB of Level 2 cache and a 533 MHz front-side bus. Standard versions of the D51C came with 256MB of 266-MHz PC2100 DDR SDRAM. The computer supports a maximum of 2GB of RAM via two DIMM slots. For storage, Compaq outfitted all versions of the D51C with 40GB, 7200rpm hard drives.


An integrated Intel Extreme Graphics graphical processing unit handles video on the computer. The chip supports monitors with resolutions up to 1,600 by 1,200 pixels. Monitors were sold separately. An integrated Intel 845G stereo audio chip handles sound on the computer. The chip is compatible with AC ’97 and Sound Blaster standards. Base versions of the D51C feature 48X CD-ROM drives. Compaq offered a CD-RW drive as an optional upgrade.

Connectivity and Expansion

Compaq equipped the D51C with an integrated Intel PRO/100 VM network connection for connecting to the Internet and local area networks. Additional ports and connections on the D51C include two serial ports, one parallel port, two front-facing and four rear-facing USB jacks, four 3.5mm audio ports, one PS/2 mouse port, one PS/2 keyboard port and a 15-pin VGA adapter.