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Topic: EM64T

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	EM64T - Wikipedia, the free encyclopedia
		EM64T was originally implemented on the E revision (Prescott) of Pentium 4 line of microprocessors, which were supported by i915P (Grantsdale) and i925X (Alderwood) chipsets in June of 2004.
		EM64T lacks the ability to save and restore a reduced (and thus faster) version of the floating-point state (involving the FXSAVE and FXRSTOR instructions).
		EM64T supports microcode update as in 32-bit mode, although it has been rumored that AMD processors have supported programmable microcode (an undocumented feature) for years.
	en.wikipedia.org /wiki/EM64T (788 words)

	EM64T at opensource encyclopedia (Site not responding. Last check: 2007-09-07)
		EM64T (Extended Memory 64-bit Technology) is an extension to the IA-32 instruction set developed by Intel which adds 64 bit extentions to the x86 architecture.
		EM64T is derived from and largely compatible with AMD's AMD64 instruction set extension.
		The history of the EM64T project is long and convoluted, mainly due to the internal politics of the Intel Corporation.
	www.wiki.tatet.com /EM64T.html (671 words)

	MBReview.com - The #1 Source For Motherboard Reviews!
		The processors that feature support for EM64T are backwards compatible with 32-bit systems, and also capable of taking advantage of the added memory and computational capabilities of 64-bit processing.
		EM64T is built off of the IA-32 architecture, with additional registers, instructions, and otherwise enhanced instructions.
		When an EM64T capable processor operates under compatibility mode, it allows the bulk of legacy 16-bit and 32-bit applications to run without any need to be recompiled under a 64-bit environment.
	www.mbreview.com /em64t.php (899 words)

	The Pentium 4 adds 64-bit Extensions > The Pentium 4 adds 64-bit Extensions (Site not responding. Last check: 2007-09-07)
		EM64T and AMD64 have a few minor technical differences which should prove to be inconsequential.
		EM64T, which was first introduced by Intel's 3.6GHz Xeon processor with 800MHz front-side bus, is an extension of Intel's classic IA-32 32-bit architecture.
		EM64T enables processors to run 64-bit operating systems and access much larger amounts of memory and bigger databases while retaining full backwards compatibility with existing 32-bit and 16-bit operating systems and applications.
	www.quepublishing.com /articles/article.asp?p=366538 (1843 words)

	IBM Redbooks \| 64-bit Computing with Intel EM64T and AMD AMD64
		The discussion whether or not EM64T and AMD64 really are 64-bit processors can be confusing to some because Intel calls its architecture “Extended Memory 64 Technology”.
		EM64T and AMD64 are, with the exception of a few instructions such as 3DNOW, binary compatible with each other.
		EM64T for example, supports 40-bit of physical addressing capable of supporting up to 1 Terabyte (TB) of physical memory.
	www.redbooks.ibm.com /abstracts/tips0475.html (1620 words)

	Intel® Extended Memory 64 Technology (EM64T) (Site not responding. Last check: 2007-09-07)
		A1: Intel®; Extended Memory 64 Technology, or Intel®; EM64T is an enhancement to Intel's IA-32 architecture.
		Intel®; EM64T is one of a number of platform innovations Intel is delivering to enhance Intel's IA-32 platforms.
		Even though the hardware microarchitecture for each company's processor is different, the operating system and software ported to one processor will likely run on the other processor due to the close similarity of the instruction set architectures.
	www.intel.com /technology/64bitextensions/FAQ.htm (1732 words)

	Shuttle Europe - BIOS-Updates for new Intel CPU functions (XD, TM2, EM64T & EIST)
		TM2 reduces processor temperature by lowering the CPU clock multiplier, and thereby the processor core speed.
		EM64T allowing platforms to access larger amounts of memory.
		Processors running in legacy mode (where a 32-bit application is running under a 32-bit operating system) remain fully compatible with today's existing 32-bit applications and operating systems.
	eu.shuttle.com /en/DesktopDefault.aspx/tabid-388/633_read-10715 (385 words)

	Pentium 4 with EM64T support? [Archive] - techPowerUp! Forums
		either P4 EM64T or AMD 64 are the true 64-bit processor anyway.
		EM64T is a 64 bits extension added to the x86 architecture....
		Google for comparisons between the 2, you'll see that both win a lot of benchmarks, pick a CPU based on what you use it for.
	forums.techpowerup.com /archive/index.php/t-3728.html (397 words)

	Server Products - Availability of EM64T Drivers for 64-bit Extended Operation Systems
		Intel®; Extended Memory 64 Technology (EM64T) is an innovation added to Intel's IA-32 Server/Workstation platforms.
		All Intel EM64T ready drivers for major system components are posted and available for download at the links above.
		If you do not find a Intel EM64T system component driver posted, then the driver is simply not available at this time.
	developer.intel.com /support/motherboards/server/sb/cs-020158.htm (141 words)

	ITworld.com - Intel releases next generation Xeon
		This will be followed in early 2005 by a new EM64T version of the Xeon MP processors, which are designed for 4-way and 8-way systems.
		Monday's news was accompanied by announcements from a number of hardware vendors, including Dell Inc. and Hewlett-Packard Co. detailing plans to release EM64T workstations with as much as 16G bytes of memory.
		Workstation users such as digital content creators and computer-aided design engineers are among the relatively few groups of users who are working on applications that are bumping up against the 4G-byte addressable memory limit of 32-bit processors.
	www.itworld.com /Comp/2087/040628xeon (750 words)

	Press Releases - Fluent Inc. Announces Support For Intel’s EM64T 64-bit Processor
		Building on the successes of Intel’s architecture for the FLUENT user community, Intel EM64T extensions, together with several innovations in microprocessor architecture and resource ability, virtually eliminate the limitations in addressing large data set, while simultaneously and transparently supporting peak performance of 32-bit codes.
		"Clusters built on Intel Xeon processor-based platforms that support Intel EM64T and PCI Express technology, combined with low-latency interconnects, offer Fluent a way to dramatically reduce turnaround time and expand its ability to use CFD for virtual prototyping," said Tom Macdonald, Intel vice president, Enterprise Platforms Group, and general manager, Advanced Components Division.
		The Intel Xeon processor supporting Intel EM64T and InfiniBand will be showcasing performance and parallel scalability, using Fluent CFD software applications for the 10 TeraFlop sized demonstration, at the Supercomputing SC04 show, Nov. 6-12, in Pittsburgh, PA.
	www.fluent.com /about/news/pr/pr78.htm (552 words)

	[H]ard\|Forum - EM64T Information
		This might be the case, as the voltages and thermal requirements for EM64T processors are the same.
		A: Motherboards released with supported chipsets, that were shipped out before validation of EM64T processor could occur will likely need a BIOS update.
		The reason they are missing from EM64T is because AMD disabled the 2 instructions and removed both from the system programming guide, then later re-enabled both.
	www.hardforum.com /showthread.php?t=845699 (2238 words)

	TrustedReviews - EM64T Server Roundup
		When AMD announced its Opteron processor and 8000-series chipsets over year ago it seemed to be taking a huge gamble by offering the server market simultaneous 32 and 64bit processing.
		However, it looks to have paid off as in the understatement of the year, Intel announced its EM64T (extended memory 64 technology) confirming that AMD’s hunch was right all along.
		In this round-up we take a look at three examples of Intel’s new processors and chipsets from Supermicro, HP and Dell but first we delve deeper into EM64T as it adds a number of significant features that AMD will be hard-pushed to match.
	www.trustedreviews.com /article.aspx?art=816 (615 words)

	The great 64-bit shootout \| InfoWorld \| Analysis \| 2004-09-17 \| By Paul Venezia
		Synthetic CPU tests can provide numbers pointing one way or the other and can help unmask weaknesses and strengths in chip architectures, but what matters most is how the processors perform in production.
		But the Intel processor was so fresh, we had to stick with 32-bit benchmarks and postpone tests of the chip’s 64-bit x86 capabilities, which are based on, but not identical to, the AMD’s x86-64 standard.
		Whereas the EM64T Xeon is no slouch, the Opteron reigns supreme.
	www.infoworld.com /article/04/09/17/38FE64shootout2_1.html (1221 words)

	X-bit labs - Hardware news - Intel to Launch Intel Pentium 4 500-Series Processors with EM64T in June.
		The company advices partners to make sure Extended Memory 64 Technology is supported by BIOS of mainboards that are planned to be used by them at that time.
		Intel’s lineup of EM64T- and EDB-enabled Intel Pentium 4 processors 500-series will consist of models 571, 561, 551, 541, 531 and 521, which are clocked at 3.80GHz, 3.60GHz, 3.40GHz, 3.20GHz, 3.00GHz and 2.80GHz respectively.
		Intel is also expected to release its Intel Celeron D chips with EM64T capability later during the year.
	www.xbitlabs.com /news/cpu/display/20050506032247.html (677 words)

	Will your Intel CPU run EM64T?
		There is also a very nice table with S-Specs for CPUs where you can find out which cores support EM64T and which don't.
		To further confirm that I am not spatting rubbish at you, see here.
		And here is their (lame) reply: "Unfortunately, as the merchandise is neither stored at nor shipped from this facility, it would not be possible for us to specify or guarantee which version/revision of a product one may receive when ordering unless it is so stated in the product description."
	www.theinquirer.net /?article=20852 (387 words)

	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.
	developer.intel.com /performance/desktop/platform_technologies/EM64T.htm (263 words)

	X-bit labs - Hardware news - Intel’s 64-bit Pentium 4 Processors Begin to Emerge in Retail.
		Intel Corp.’s Pentium 4 processors with Extended Memory 64 Technology begin to emerge for sale in retail and can be purchased by end-users, not computer makers.
		The chips come in fl and white retail packaging and are positioned primarily for uniprocessor servers and workstations.
		Intel Pentium 4 processors with EM64T come in LGA775 form-factor and are compatible with mainboards based on i915- and i925-series chipsets.
	www.xbitlabs.com /news/cpu/display/20050120140538.html (513 words)

	IBM intros Power, EM64T Intel servers
		Our sources tell us that it inked a deal with Intel about a year back to concentrate on EM64T chips rather than chips from the opposition.
		IBM's Intel EM64T servers in the XSeries include mid sized and smaller clients.
		The firm claims here that clients can run their 32-bit applications "faster than ever" and can migrate to 64-bits when they want.
	www.theinquirer.net /?article=18898 (204 words)

	Intel® Extended Memory 64 Technology (EM64T)
		Intel EM64T represents a natural addition to Intel's computing architecture, allowing platforms to access larger amounts of memory.
		Intel Extended Memory 64 Technology (Intel EM64T) is a feature of to Intel's computing architecture that enables the desktop processor platform to access larger amounts of memory.
		Intel®; EM64T requires a computer system with a processor, chipset, BIOS, operating system, device drivers and applications enabled for Intel EM64T.
	www.intel.com /technology/64bitextensions (478 words)

	Intel releases new 64-bit compilers, supports EM64T \| TG Daily (Site not responding. Last check: 2007-09-07)
		Now in version 8.1, the big news of the Intel compilers is the ability for software to access larger amounts of memory, which is generally referred to as EM64T for Xeon and Pentium 4-based servers and workstations.
		Besides the compilers, the products can be extended with with Intel's integrated performance primitives, the VTune performance analyzers and the firms's math kernel library.
		Intel said, that the tools can also be used for future EM64T desktop processors.
	www.tgdaily.com /2004/10/04/intel_releases_new_64/index.html (325 words)

	Red Hat Enterprise Linux 3 Update 2 Release Notes (AMD64/EM64T Edition)
		This means that systems containing one Intel® EM64T processor are likely to perform better than a single-processor AMD64 system when running CPU-intensive applications.
		This is likely to result in lower performance for IO-intensive workloads for Intel® EM64T as compared to AMD64 processors.
		The Red Hat Enterprise Linux 3 Update 2 kernel excludes these instructions in both C and assembly language code and therefore will suffer a small amount of performance degradation.
	www.centos.org /docs/3/release-notes/as-amd64/RELEASE-NOTES-U2-x86_64-en.html (2078 words)

	Intel™ Extended Memory 64 Technology (EM64T)
		The paper begins with a description of the characteristics and advantages of 64-bit computing.
		The paper then discusses the main features of EM64T, briefly compares it to the Intel Itanium architecture, and presents the operating system and chip set support required for EM64T.
		All prices, specifications and promotional offers are subject to error, change and/or substitution at Dell's discretion at any time without notice.
	www1.ca.dell.com /content/topics/global.aspx/vectors/en/2004_em64t?c=ca&cs=cabsdt1&l=en&s=bsd (347 words)

	Intel executive: EM64T has set back Itanium \| InfoWorld \| News \| 2004-09-08 \| By Robert McMillan, IDG News Service
		After initially expressing reluctance to the idea, Intel last February followed rival Advanced Micro Devices Inc.'s (AMD's) lead and announced plans to make its 32-bit Xeon and Pentium processors capable of processing data in larger, 64-bit chunks, than they could previously handle, and thus allow them to run 64-bit applications.
		Intel had been reluctant to support the 64-bit extension of x86 -- a technology that it calls EM64T and AMD calls AMD64 -- for fear that it would hamper the adoption of the Itanium processor line, which is also designed for 64-bit applications.
		Though Intel had at one point positioned Itanium as the general purpose enterprise processing platform of the future, Talwalkar's statements reflected the company's growing realization that 64-bit versions of x86 are unlikely to be displaced by Itanium, said Gordon Haff, an analyst with industry research firm Illuminata Inc.
	www.infoworld.com /article/04/09/08/HNsetback_1.html (1256 words)

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