Dell GX1 P manual 7DEOH9LGHR0HPRU\5HTXLUHPHQWV

2X AGP provides a dedicated bus from the video subsystem to the system chip set. AGP-based video subsystems have two significant performance advantages over PCI-based video subsystems:

— The AGP bus reduces bandwidth requirements of the PCI bus, improving overall system performance.

— The AGP bus allows a 3D video subsystem to execute directly from main memory.

‡ A diskette/tape drive interface, which supports a 3.5-inch diskette drive and, optionally, a second diskette drive or tape drive.

‡ Enhanced integrated drive electronics (EIDE) support. The primary and secondary interface are both located on the PCI bus to provide faster data throughput. Each interface supports high-capacity EIDE drives, as well as devices such as ATA 33 hard-disk drives, EIDE CD-ROM drives, and EIDE tape drives.

‡ Two high-performance serial ports and one bidirectional parallel port for connect- ing external devices. The parallel port is fully Enhanced Capabilities Port (ECP)-compliant.

‡ A Personal System/2 (PS/2)-style keyboard port and a PS/2-compatible mouse port.

Introduction 1-3

synchronous graphics random-access memory (SGRAM) video memory; the Dell OptiPlex GX1p comes with 8 MB of SGRAM video memory. Maximum resolu- tions are 1600 x 1200 with 65,536 colors noninterlaced and 1280 x 1024 and 1024 x 768 with true-colors noninterlaced. In 800 x 600 and 640 x 480 resolutions, 16.7 million colors are available for true-color graphics using a 32-bits per pixel (bpp) format. True-color provides higher performance, but uses more graphics memory. Table 1-1 lists the video memory requirements for the Microsoft Windows® 95, WIndows 98, and Windows NT 4.0 operating systems.

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640 x 480	True-color	85 Hz	4 MB
	(32 bpp)
800 x 600	True-color	85 Hz	4 MB
	(32 bpp)
1024 x 768	True-color	85 Hz	4 MB
	(32 bpp)
1280 x 1024	True-color	75 Hz	8 MB
	(32 bpp)
1600 x 1200	65,536 colors	75 Hz	8 MB
	(16 bpp)