choice of the internal hard drive interface; conforming to the standards of the IBM PC compatible platform, cheaper but slower IDE drives were used instead of SCSI for the first time. An external SCSI port was still available, and the CD-ROM used SCSI internally, but the 630 used an older controller that was much slower than the ones used in higher-end Macs of the time. Video: One external monitor is supported through a DA-15 connector. A non-upgradeable 1 MB of DRAM is soldered to the motherboard; this provides resolution of up to 640×480 with 16-bit color, and 832×624 with 8-bit color. A separate video card is required for 24-bit color or higher resolutions. The choice to use DRAM instead of VRAM saves money due to its commonality, but results in lower performance and increased chance of flickering. In their testing, MacWorld described the video performance of the Quadra 630 as "mediocre". CD-ROM: Models equipped with a CD-ROM use the Apple CD 300i plus, a 2×-speed SCSI drive capable of reading 656 MB and 748 MB data CDs as well as audio CDs. The caddy tray from the Quadra 610 is replaced with a tray-based loading mechanism. Remote control: Models equipped with the TV/video system included a Sony RMC-A1 remote control; consequently, the remote would control both the Macintosh and any compatible Sony television at the same time. Performance: MacWorld Magazine ran benchmarks at the time of the Quadra's release and reported that performance is similar to a Quadra 950 but slightly slower than the 800. Models The Quadra 630 has different names depending on its target market: Macintosh Quadra 630 for professional and business use, Macintosh LC 630 for the K-12 educational market, and Macintosh Performa 630 for the consumer and higher-education markets. The Performa 630 was sold with several slightly different model numbers, depending on included hardware and software features. Some models included a 14" Shadow mask CRT called the Apple Performa Plus Display. Introduced July 18, 1994: Macintosh Quadra 630: 68040 processor at 33 MHz, with 4 MB of RAM, and a 250 MB hard disk. A 2× CD-ROM was available as an option. $1,199 USD. Macintosh Performa 630: FPU-less 68LC040 processor at 33 MHz, with 4 MB of RAM, and a 250 MB hard disk. Sold in the consumer retail channel. $1,449 USD. Macintosh Performa 630CD: Same as the Performa 630, with a CD-ROM drive. $1,849 USD.