Intel Performance
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Intel® Pentium® 4 Processor
64 Bit Computing
 
64-Bit Computing: EM64T

Intel® Extended Memory 64 Technology (EM64T) delivers the flexibility for operating systems and future software that support 64-bit computing. Intel processors with EM64T also bring the responsiveness of Hyper-Threading Technology into the 64-bit computing environment.

As with any new technology, the emerging desktop platform 64-bit software ecosystem is expected to lag behind hardware readiness.
Not all available 64-bit compilers are properly configured to take advantage of Intel Technology.

(The following scores are estimates**)

64-Bit Computing: EM64T

64-Bit Computing: EM64T

** Estimate measurements on a PC running a preproduction version of Windows* XP Professional x64

32-bit SPEC* tests show similar performance on 32-bit and 64-bit OS.

64-bit SPEC* tests running on 64-bit OS exhibit higher performance resulting from new features in the 64-bit compiler and new hardware features.
64-Bit Computing Performance Estimates
Intel® Pentium® 4 Processor with HT Technology Extreme Edition 3.73GHz and Intel® 925XE Express Chipset SPECfp*_base 2000 SPECint*_base 2000
32-bit Benchmark on 32-bit OS 2013 1793
32-bit Benchmark on 64-bit OS 1998 1770
64-bit Benchmark on 64-bit OS 2189 1805
† Look for systems with the Intel® Pentium® 4 Processor with HT Technology logo and also including an Intel® 925XE, 925X or 915 Express Chipset (see the product spec sheet or ask your salesperson). Performance and functionality will vary depending on (i) the specific hardware and software you use and (ii) the feature enabling/system configuration by your system vendor. See www.intel.com/info/hyperthreading for information on HT Technology or consult your system vendor for more information.

Look for systems with the Intel® Pentium® 4 Processor with HT Technology logo which your system vendor has verified utilize Hyper-Threading Technology. Performance will vary depending on the specific hardware and software you use.  See www.intel.com/info/hyperthreading for information.

Test System Configuration
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