Dell Precision ™ T5500/T7500 Tower Workstations Technical GuideP L E A S E S E E I M P O R T A N T I N F O R M A T I O N O N P A G E 3 7P A G E 2 8 O F 3 7System Configurations NOTE: Offerings may vary by region.Operating SystemNOTE: One of the following Operating Systems will be preinstalled.T5500 T7500Windows Vista® operating system (default unless another ischosen)Windows Vista® Ultimate (32 and 64 bit), Windows Vista® Business(32 and 64 bit) (SP1 when available)Windows® XP support via a Windows Vista downgrade Windows® XP Professional SP2 (32 and 64 bit)Other Red Hat® Enterprise Linux® 5.3 64-bit Factory Installed, Suse®SLED Linux (China only), FreeDOSOS Media Support X XChipsetT5500 T7500ChipsetIntel® 5520 Chipset X XTPM 1.2 Security Device (Trusted Platform Module) (whereavailable)16KB located atTPM1P2 on chipset16KB located atTPM1P2 on chipsetBroadcom® 5761 Gigabit Ethernet Controller X XProcessor ChoicesNOTE: Processor numbers are not a measure of performance. All processors are quad-core except for the E5502Processor (speed, GT/s, wattage, cache)Intel® Xeon® Processor X5580 3.20GHz, 6.4GT/s, 130 watts, 8MB L3 cacheIntel® Xeon® Processor X5570 2.93GHz, 6.4GT/s, 95 watts, 8MB L3 cacheIntel® Xeon® Processor X5560 2.80GHz, 6.4GT/s, 95 watts, 8MB L3 cacheIntel® Xeon® Processor X5550 2.66GHz, 6.4GT/s, 95 watts, 8MB L3 cacheIntel® Xeon® Processor E5540 2.53GHz, 5.86GT/s, 80 watts, 8MB L3 cacheIntel® Xeon® Processor E5530 2.40GHz, 5.86GT/s, 80 watts, 8MB L3 cacheIntel® Xeon® Processor E5520 2.26GHz, 5.86GT/s, 80 watts, 8MB L3 cacheIntel® Xeon® Processor E5506 2.13GHz, 4.8GT/s, 80 watts, 4MB L3 cacheIntel® Xeon® Processor E5504 2.04GHz, 4.8GT/s, 80 watts, 4MB L3 cache