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So, there is still room for the new faster CPUs to come out within this product family. In Q2 2005 Intel is going to announce Pentium 4 670 working at 3.8GHz.

However, the question about the “fastest CPU” title is so far not in favor of Pentium 4 660, and not in favor of Pentium 4 570. There is one more CPU based on Prescott 2M core, which has just been announced today and which belongs to the Pentium 4 Extreme Edition family. This newcomer works at 3.73GHz clock rate and is intended to support 1066MHz bus frequency. Note that even though the new Pentium 4 Extreme Edition 3.73GHz boasts most of the features present in the new Pentium 4 6XX processors, it doesn’t support EIST technology. The other two technologies, XD bit and EM64T, are fully supported.

And here is the info we get from the CPU-Z diagnostic utility about the new Pentium 4 Extreme Edition 3.73GHz and Pentium 4 660 processors:


Intel Pentium 4 660


Intel Pentium 4 Extreme Edition 3.73GHz

Summing up, I would like to offer you a table with all the formal characteristics of the newly announced Pentium 4 6XX and Pentium 4 Extreme Edition 3.73GHz processors. For a more illustrative comparison we are also offering you the specs for the Pentium 4 5XX side-by-side with those of the newcomers:

 

Pentium 4 5XX

Pentium 4 6XX

Pentium 4 Extreme Edition 3.73 GHz

Package

LGA775

LGA775

LGA775

Processor rating

570, 560, 550, 540, 530, 520

660, 650, 640, 630

None

Clock frequencies

2.8 – 3.8 GHz

3.0 – 3.6 GHz

3.73 GHz

Bus frequency

800 MHz

800 MHz

1066 MHz

Core

Prescott

Prescott 2M

Prescott 2M

Manufacturing technology

90nm, strained silicon

90nm, strained silicon

90nm, strained silicon

L1 data cache

16 KB

16 KB

16 KB

Trace cache

12000 micro-ops

12000 micro-ops

12000 micro-ops

L2 cache

1024 KB

2048 KB

2048 KB

EM64T

None

Yes

Yes

XD-bit

Yes

Yes

Yes

EIST

None

Yes

None

Hyper-Threading technology

Yes

Yes

Yes

SIMD-instructions support

SSE, SSE2, SSE3

SSE, SSE2, SSE3

SSE, SSE2, SSE3

Number of transistors

125 mln

169 mln

169 mln

Die size

112 sq.mm

135 sq.mm

135 sq.mm

As for the thermal characteristics of the new processors, I should say that their heat dissipation lies within the same range as that of the Pentium 4 5XX CPU family. It means that Pentium 4 6XX working at up to 3.4GHz frequencies fit into the 84W TDP, while the top models including the new Pentium 4 Extreme Edition 3.73GHz feature 115W TDP.

This way the new CPUs can be freely used in the same mainboards as the previous generation of Pentium 4 LGA775 processors. The only requirement is the support of the new CPUs in the mainboard BIOS.

So, please meet the newcomers:


Pentium 4 570, Pentium 4 660, Pentium 4 Extreme Edition 3.73 GHz

 
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