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Intel Pentium 4 2.66GHz Processor Review
Intel Pentium 4 2.66GHz Processor Review - PCSTATS
The Northwood core has a great reputation for its overclockability, even going so far as to pull back many enthusiasts from the loving clutches of AMD.
 85% Rating:   
Filed under: CPU / Processors Published:  Author: 
External Mfg. Website: Intel Nov 12 2002   C. Sun  
Home > Reviews > CPU / Processors > Intel Pentium4 2.66GHz

Intel Pentium 4 2.66GHz Processor Review

For those of us who want top of the line performance but don't want to spend a fortune, the Pentium 4 2.66 GHz processor offers a good mix of power and value. With a street price of $650 CDN ($300 US) the P4 2.66 is certainly more expensive than a comparable AMD Athlon XP, but it's still quite a bit less then the $830 CDN ($410 US) a P4 2.8 GHz commands.

I highly doubt you'll notice the 140 MHz speed difference, but the $180 price difference will be immediately evident!

The P4 2.66 GHz processor runs on a 133 MHz (533 MHz) FSB, uses the same familiar Socket m478 form factor and is based on the brand spanking new C1 stepping Northwood core.

The 2.66 GHz processor has all the technical goodies we expect from a Pentium 4 processor including NetBurst Architecture, SSE2 and Advanced Transfer Cache. It does not support Hyper-Threading however, that speciality is reserved for 3.06GHz, and faster Pentium 4's.

Still, the Northwood core is no slouch, with 55 million transistors in the core it is a large chunk of silicon. The chip runs on a default voltage of 1.525V (0.025V higher then B0 based Northwood's), and is based on the SL6DX revision. If you're interested in learning more about Pentium 4 technology, please read our Pentium 4 1.5 GHz and if you're interested in hearing about the Northwood P4 core, check out out P4 1.6A review.

The Northwood core has a great reputation for its overclockability, even going so far as to pull back many enthusiasts from the loving clutches of AMD. Based on the C1 core, this chip was facing some pretty high hopes; beginning first with a slow and steady increase in FSB values. Armed with a new Vantec 470W power supply I was confident I wouldn't be limited by the PSU as was the case with a 300 Antec power supply and a certain 2.8GHz Pentium 4 processor.

Sights were set on 145MHz, then 150MHz, and even 155 MHz FSB with no apparent problems. We did have to change the memory divider on the Albatron PX845E Pro from 3/4 to 1/1 to keep things going smoothly.

At 160 MHz FSB we had to up the CPU core voltage to 1.6V to stabilize things. At 164 MHz we hit a weird wall, no matter how high the CPU Vcore (even up to 1.85V!) was turned up, the 2.66GHz chip just wouldn't take it. Perhaps we need something better then air cooling to hit those high FSB's? In the end, the chip was pushed up to a very respectable 3.26 GHz on air cooling, with a voltage of 1.65V.

pcstats test system specs:

computer hardware:


AthlonXP 2700+
Pentium 4 2.66 GHz
Pentium 4 2.8 GHz
Pentium 4 2.4 GHz

Clock Speed:

13 x 166 MHz = 2.16 GHz (XP 2700+)
18 x 133 MHz = 2.4 GHz (P4)
21 x 133 MHz = 2.8 GHz (P4)
20 x 133 MHz = 2.66 GHz (P4)

20 x 163 MHz = 3.26 GHz

Motherboards: Albatron PX845E Pro*
Epox 8K3A+
Chipset: Intel i845E

ATi Radeon 9700 Pro


256MB Corsair XMS3200 CAS2

Hard Drive: 40GB Samsung SP4004H

Panasonic 1.44MB Floppy Drive

Heatsink: AVC Sunflower
Thermalright SK-6 w/40 CFM YS Tech
PowerSupply: Antec 300W PSU
Software Setup WindowsXP Build 2600
Intel INF 4.00
VIA 4in1 4.43V
ATi Catalyst 2.3

SysMark 2002
Business Winstone 2002
Content Creation 2002

Super Pi
SiSoft Sandra 2002 Pro
3DMark2001 SE
Quake III Arena

* - The Albatron PX845EPro enables a 3/4 memory divider by default at 133 MHz.

© 2023 PCSTATS.com Next Page >


Contents of Article: Intel Pentium4 2.66GHz
 Pg 1.  — Intel Pentium 4 2.66GHz Processor Review
 Pg 2.  Benchmarks: Bapco Sysmark 2002, Winstone 2002
 Pg 3.  Benchmarks: Super PI, POVRay
 Pg 4.  Benchmarks: Sandra 2002
 Pg 5.  Benchmarks: PCMark 2002, 3DMark 2001
 Pg 6.  Benchmarks: QIII Arena and Conclusions

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