Intel Prescott and P4EE processor support for system builders

Intel Prescott Support Information for System Builders

System Requirements and Recommended Components

Prescott is the codename for the new generation Pentium 4 processor core built on 90-nanometer technology and featuring advanced features such as larger caches sizes and new processor instruction. Originally it is being released in the 478-pin CPU package and will eventually be released in a new LGA-775 socket format.

Overall this new processor core requires special system configuration considerations as designated on this page, specifically motherboard design, BIOS and voltage regulation requirements, plus chassis design, cooling, and power supply requirements.

Prescott Designations: You can tell a Prescott CPU because in the Model Code there will be an "E" at then end they will have 1MB of L2 cache and run at 800MHz FSB. They should also be designated as being fabricated using 90nm (nanometer) technology process on 300mm wafers. However some Prescott have an "A" at the end and run at 533FSB and do not support hyperthreading, but they still have 1MB cache.

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Prescott Processors - ASI SKU

ASI SKU	SPEED	FSB	Intel Model	L1 Cache	L2 Cache	Special Notes
N/A	3.40E GHz	800 MHz	BX80546PG3400E	16KB	1MB	future release
25741	3.20E GHz	800 MHz	BX80546PG3200E	16KB	1MB	Hyper-Threading (HT) Technology, Intel NetBurst microarchitecture, a larger, 1 MB Level 2 (L2) cache and 13 new instructions (SSE3)
25742	3.0E GHz	800 MHz	BX80546PG3000E	16KB	1MB	Hyper-Threading (HT) Technology, Intel NetBurst microarchitecture, a larger, 1 MB Level 2 (L2) cache and 13 new instructions (SSE3)
25743	2.8E GHz	800 MHz	BX80546PG2800E	16KB	1MB	Hyper-Threading (HT) Technology, Intel NetBurst microarchitecture, a larger, 1 MB Level 2 (L2) cache and 13 new instructions (SSE3)
27478	2.8A	533 MHz	BX80546PE2800E	16KB	1MB	No Hyperthreading and will not work on 533FSB motherboard - see motherboard support chart
26836	2.4A	533 MHz	BX80546PE2400E	16KB	1MB	No Hyperthreading and will not work on 533FSB motherboard - see motherboard support chart

Motherboard Support

One of the major requirements to support a Prescott core is a motherboard that meets FMB 1.5 (FMB = Flexible Motherboard) voltage regulation specifications. Just because your chipset supports Prescott does not mean your mainboard will support it. The motherboard must have the correct voltage regulation. Secondly it must have an updated BIOS to recognize the processor. The chart below details these requirements.

Intel P4EE and Prescott Supported Motherboards Matrix

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Barebones (Desktop and Server)

ASI SKU	Manufacturer	Model	Prescott Support	Since Revision	BIOS	Notes
25455, 25456, 25457	ASUS	Terminator 2 (T2-P)	Yes	All	-	-
25458	ASUS	Terminator 2 (T2-R)	Yes	All	-	-
28389	ASUS	Pundit-R Barebone	Yes	All	All	-
28073	MSI	MBOX 661FM	Yes	All	All	-
27438	Shuttle	SB75G2V2	Yes	All	FB75S017	up to 2.80E
25257	Shuttle	ST61G4	Yes	All	FT61S01Z	up to 2.80E
26962	Shuttle	ST62K	Yes	All	FT62S00N	up tp 2.80E
27280	SuperMicro	5013C-M	Yes	All	All	-
27283	SuperMicro	5013C-M8	Yes	All	All	-
27363	SuperMicro	5033C-T	Yes	All	All	-

For Asus CPU support see - http://www.asus.com/support/cpusupport/cpusupport.aspx

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Chassis Support (CAG 1.1)

PC systems using the Intel Prescott Core processors are highly recommend to use only cases that meet the CAG 1.1 specification. CAG 1.1 is a thermal design specification and is the second major revision of Intel's TAC (Thermally Advantaged Chassis) specification designed to make the cases cooler and quieter.

The In-Win below cases all have the required CAG 1.1 features (note only the newer models that end with "T" not those that end in "G").

ASI SKU	Case Model	Photo	Dimensions	Power Supply	Thermal Solutions
27013	In-Win IW-S564T		16 1/2" x 7 3/4" x 18 5/16"	430 Watt w/Dual Fan	Side Panel Air Duct, Rear 90mm BB Fan x1
27012	In-Win IW-S523T		16 1/2" x 7 3/4" x 18 5/16"	430 Watt w/Dual Fan	Side Panel Air Duct, Rear 90mm BB Fan x1
27011	In-Win IW-S508T		16 1/2" x 7 3/4" x 18 5/16"	430 Watt w/Dual Fan	Side Panel Air Duct, Rear 90mm BB Fan x1
27009	In-Win IW-S506T		16 1/2" x 7 3/4" x 18 5/16"	430 Watt w/Dual Fan	Side Panel Air Duct, Rear 90mm BB Fan x1
26992	In-Win IW-S500T		16 1/2" x 7 3/4" x 18 5/16"	430 Watt w/Dual Fan	Side Panel Air Duct, Rear 90mm BB Fan x1
27010	In-Win IW-S700T		16.5" x 7.75" x 18.31"	430 Watt w/Dual Fan	Side Panel Air Duct, Rear 90mm BB Fan x1

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Power Supplies

To support the Prescott and P4EE processors a power supply with minimum 15A current output on +12 volt line, however even more may be required depending on how heavily loaded the system is with extra hard drives, a lot of PCI cards, or high-end video cards. We recommend 18A or higher. You can check this specification on the power supply output spec sticker. Of course it is recommended that you use one of the certified cases above.

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