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  • Intel Core 2 Extreme QX6700 Quad-Core Processor, 2.6 GHz, 8M L2 Cache, LGA775
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Intel Core 2 Extreme QX6700 Quad-Core Processor, 2.6 GHz, 8M L2 Cache, LGA775

by Intel
29 customer reviews
| 17 answered questions

Available from these sellers.
  • 2.66 GHz Quad-Core multi-tasking monster delivers twice the performance on highly-threaded apps
  • Wide Dynamic Execution improves gaming execution time and energy efficiency
  • Intelligent Power Capability delivers extreme energy-efficient performance
  • Smart Memory Access optimizes use of all available data bandwidth
  • Advanced Smart Cache provides a higher-performance, more efficient cache subsystem
1 new from $698.95 10 used from $32.00 2 refurbished from $69.99

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Technical Details

  • Brand Name: Intel
  • Model Number: BX80562QX6700
  • Processor Count: 2
  • Computer CPU Speed: 2.66 GHz
  • Computer CPU Manufacturer: Intel

Product Description

Product Description

Move over dual-core. Now you can experience the power of quad-core processing with this Intel Core 2 Extreme QX6700 2.66 GHz CPU!It features a 2.66 GHz clock speed, 1066 MHz bus speed and an impressive 8 MB L2 cache to zip through applications with accuracy and reliability. This Socket 775 processor is backed by Enhanced Intel Speedstep Technology, Intel EM64T, and Intel Virtualization Technology to boost your computer's performance to the highest level. Upgrade your desktop with this ultra-fast Intel Core 2 Extreme QX6700 2.66 GHz Quad-Core Processor today!

From the Manufacturer

Extreme dominance built-in. You've battled your enemies in this world and beyond, but never like this. With an Intel Core 2 Extreme processor, you'll have the best desktop PC experiences for years to come. Bar none. Experience performance second to none on highly-threaded apps and get in the game like it was meant to be played with the Intel Core 2 Extreme quad-core processor QX6700 -- the world's first quad-core desktop processor. Let them challenge you and let the annihilation begin.

When "Extreme" is an understatement.
It's not about playing the game. It's about dominating and winning the game. Designed for extreme power, the Dual-Core and Quad-Core Intel Core 2 Extreme desktop processors feature the latest arsenal of performance-rich technologies, and only from Intel:

  • Intel Wide Dynamic Execution, enabling delivery of more instructions per clock cycle to improve gaming execution time and energy efficiency
  • Intel Intelligent Power Capability, designed to deliver extreme energy-efficient performance
  • Intel Smart Memory Access, improving system performance by optimizing the use of all available data bandwidth
  • Intel Advanced Smart Cache, providing a higher-performance, more efficient cache subsystem. Optimized for industry leading multi-threaded games
  • Intel Advanced Digital Media Boost, accelerating a broad range of applications, including ultra-realistic game physics and human-like artificial intelligence for an intense gaming experience unlike any other

Warning: Graphics may appear to be too real.
The new Intel Core 2 Extreme processor has the power for incredible visual experiences. Get inside amazingly complex HD games and applications with the incredible performance from Intel's most advanced gaming desktop processor ever.

Energy-efficient performance? Rage on.
The Intel Core 2 Extreme processor was designed to enable energy-efficiency so you can run red hot. Plus, the added energy efficiency allows systems to run quieter so you only hear what you want to hear -- the sounds of sweet victory perhaps?

What's in the Box:
CPU, heatsink, fan, user guide.


Product Details

  • Product Dimensions: 10 x 4 x 7 inches
  • Shipping Weight: 1.4 pounds
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B000JNNAU0
  • Item model number: BX80562QX6700
  • Average Customer Review: 4.7 out of 5 stars  See all reviews (29 customer reviews)
  • Amazon Best Sellers Rank:
  • Product Warranty: For warranty information about this product, please click here
  • Discontinued by manufacturer: Yes
  • Date first available at Amazon.com: October 16, 2006

Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

30 of 32 people found the following review helpful By Richard Hagen on May 22, 2007
I love this processor, 4 cores really does make a difference. Yes, newer chips are already on the horizon, and you might be able to wait until this chip is much cheaper, but for the moment, even at the price its at.. this chip is well worth the money.

One of the reasons is that its an unlocked chip. You can overclock this to whatever specs you want, and it will not complain. Of course, the trick is to get the overclock USABLE and STABLE. That requires some thought and knowledge.. or a motherboard that has built in overclock profiles like the Asus Workstation Pro series of motherboards. Plus, it requires a GOOD COOLER.

This chip runs HOT. Its "failure temperature" is reported to be 212F / 100C, but I would be more conservative and say that if you start hitting 70C on this chip you need to re-evaluate your cooling. Another thing to note - the cooler that comes with the chip? TRASH. Well, let me qualify that statement a bit. The stock cooler *WILL* cool this chip to usable temperatures, if a) you do not overclock it at all b) have a very good airflow system and c) do not intend to do anything really heavy.

The last part there - "do not intend on doing anything really heavy" rather defeats the purpose of having a quadcore. You can surf and write documents on a Pentium M chip if that's all you need to do. This chip is meant to WORK, and WORK HARD. So, with that in mind, the stock cooler is not to be considered when you buy this chip. You HAVE to buy a better cooler and I would say it is also important (if not essential) to buy an aftermarket thermal paste like an Artic Silver or Arctic Cooling MX-1. Do not skimp on this, and it will reward you well.

For overlocking into 3.8ghz and upwards to 4GHZ you will need a very good water cooler.
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11 of 11 people found the following review helpful By Rascal on May 13, 2007
I've had P3 CPU's and P4's and AMD's for many years, but this Quad Core is unbelievable. I've burned Cd's, recorded music, and played games all at the same time with hardly a hiccup from the CPU. This buy is not only for now, but for the future as well. The only negative thing I can say about it, is that it does get your system a little warm, even with liquid cooling. But, with the amount of fans these days, it's not a problem.
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11 of 13 people found the following review helpful By Mark L. Maris on March 26, 2007
Verified Purchase
Fastest CPU on the market today (03-26-07). My processor is no longer the bottleneck in my system. One small tweak and I had all four cores running at 2.93GHz. With the help of the Zalman CNPS9500, this bad boy stays under 40c overclocked. I am sure there will be a faster proc out in the near future, but for now, there is nothing that can touch this thing.
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5 of 5 people found the following review helpful By Spooky on August 14, 2011
I have had the Intel® Core®2 Extreme QX6700 in my PC for nearly 5 years and it is a workhorse. I am a photographer and videographer and really push my system from time to time and have never had a problem with the QX6700. It's great performance and longevity has probably saved me thousands over the years, because I would usually upgrade my PC every two years and haven't had to since December 2006 (current date is Aug 14, 2011)

The rest of my system specs for those interested.

EVGA® Nvidia® nForce 680i SLI 3xPCIe 16x DDR2 800/1000/1200 Motherboard
nVidia® EVGA® GeForce 8800 GTX 768M DDR3 PCIe Graphics Card
8GB DDR2 1000MHz PC2-8000 Memory
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3 of 3 people found the following review helpful By Roger on February 19, 2013
Verified Purchase
I paid and extra $3.00 for express shipping. It was ordered on Monday evening and I received it Thursday morning. Packaging was more than expected for a used product. The CPU very clean contained in case, placed in Mylar bag and shipped in bubble bag. Most importantly of all it worked and continues to work great.

I have a Dell XPS 700 that I purchased in December of 2006. The original CPU was a Intel E6400 2.13GHz and achieved a respectable Windows Experience Index (WEI) of 5.1. Because the XPS 700 has a NVIDIA N590 chipset, I was able to "overclock" (OC) the E6400 to 2.66 GHz by flashing the BIOS to 1.4. and using the "N-Tune" utility from NVIDIA's website. The E6400 with the OC now has a WEI of 5.3. Note that N-Tune is an operating system (OS) utility and some games act abnormal in this mode. Examples are over talking or acting like they are on massive steroids. A nice work around is to use the command line "bcdedit /set useplatformclock TRUE". This will give the overclock benefit and cause the game programs to behave.

The XPS has (x2) GTX 550ti video cards. One is a PNY XLR8 and the other MSI Cyclone-II. The game bottleneck, even with the OC is the CPU, which is why I decided to upgrade.

In my research, I discovered that I could add a quad CPU up to a QX6800. It was an obscure statement on one of Dell's forums that went something like, unlike other XPS motherboards (MB), the H2C does NOT support the following…. and a list of CPUs followed. One enterprising user took a leap of faith and decided that the Dell tech meant that the XPS 700 would support the CPUs in the list and plopped one in and it worked. So, I decided to try.
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Verified Purchase
The Intel QX6700 is a very powerful and versatile CPU with Quad Core Design, 8MB L2 Cache and an Unlocked Multiplier which allows the PC Power user and tinkerers to over clock or under clock the CPU by changing the multiplier and/or FSB.

On my computer, I have a Gigabyte GA-P965-DS3 Motherboard (Version 1.0, Bios Version 13). With Intel's 965 chipset The Bios gives me a choice of multipliers for the QX6700 ranging from 6x to 16x. I have tested almost the entire range of multipliers and found through trial and error that the maximum usable range is between 6x and 11x with my current hardware configuration. outside the range of multipliers I specified above , my PC will either fail to boot, fail to load the OS (Windows XP) or fail to run applications in Windows causing the PC to reboot spontaneously, often without warning.

I have found my 'happy medium' configuration on my PC to be: OC the FSB from 266 MHz to: 333MHz, OC Memory from 800MHz to 833 MHz, CPU Bus speed multiplier:10x results in CPU Core OC from 2.66 GHz to:3.33.GHz; With these settings, my PC is about 95% stable, and never overheats as long as I clean the Case Air Filter, Fans and Heatsinks Monthly.

Note: The CPU Cooler I am using is a ThermalRight brand, Air Cooled unit with 8 Copper Heat Pipes transferring heat from the CPU to a 120mm W x 110mm H x 79mm D Aluminum Heatsink cooled with a 92mm SCYTHE KAMA PWM controlled variable speed fan rated at 200 RPM - 2500 RPM, 0 CFM - 55.55 CFM; Thermal Compound I used between the CPU and the CPU Cooler is: Arctic Silver 5 Thermal Compound; I highly recommend the use of Arctic Silver 5 Thermal compound for any heat sink application.

I am very happy with the Intel QX6700 Extreme Quad Core CPU I installed in my PC.
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