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Intel® Pentium® 4 Processors 521
Processor Specifications:
Product Order Codes:
Box Order Code:
BX80547PG2800EK
OEM Order Code:
JM80547PG0721MM
Supported Features:
  • Hyper-Threading Technology 1
  • Execute Disable Bit 2
  • Notes:
    Some of these processors are offered as boxed processors with an unattached heatsink.

    These parts are multiple VIDs.

    This processor uses a physical signaling scheme of quad pumping the data transfers over a 200-MHz clock buffering scheme allowing for sustained 800-MHz data transfers.
    Legal Disclaimers:
    1 Hyper-Threading Technology requires a computer system with an Intel® Pentium® 4 processor or Intel® Core™ i7 processor supporting HT Technology and a Hyper-Threading Technology enabled chipset, BIOS and operating system. Performance will vary depending on the specific hardware and software you use. See http://www.intel.com/info/hyperthreading/ for more information including details on which processors support HT Technology.
    2 Enabling Execute Disable Bit functionality requires a PC with a processor with Execute Disable Bit capability and a supporting operating system. Check with your PC manufacturer on whether your system delivers Execute Disable Bit functionality.