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AMD Phenom X4 9850 (2.5GHz)
  • Editors' rating: 3 stars
      Overall score: 6.7 (3.0 stars)
AMD Phenom X4 9850 (2.5GHz) Reviewed on 03/26/2008

The Bottom Line: AMD's new Phenom X4 9850 is overpriced and outclassed compared with its Intel-based quad-core competition. If PC vendors can use this chip to make cheap systems (as they did with older Phenoms), we might have nicer things to say, but as a DIY part at this price, we can't recommend AMD's latest quad-core CPU.

Specs: Processor, AMD Phenom X4 9850

AMD Phenom 9600 (2.3GHz)
  • Editors' rating: 3 stars
      Overall score: 6.0 (3.0 stars)
AMD Phenom 9600 (2.3GHz) Reviewed on 12/10/2007

The Bottom Line: AMD's new Phenom quad-core CPU has little to recommend it over competing chips from Intel. The Phenom is marginally less-expensive, but not enough to make up for its subpar performance. Unless AMD drops prices more aggressively, it looks like Intel will maintain its grasp on the CPU market for the foreseeable future.

Specs: Processor, AMD Phenom X4 9600

AMD Phenom 9500 (2.2GHz, OEM)
  • Editors' rating: 3 stars
      Overall score: 6.0 (3.0 stars)
AMD Phenom 9500 (2.2GHz, OEM) Reviewed on 12/10/2007

The Bottom Line: AMD's new Phenom quad-core CPU has little to recommend it over competing chips from Intel. The Phenom is marginally less expensive, but not enough to make up for its subpar performance. Unless AMD drops prices more aggressively, it looks like Intel will maintain its grasp on the CPU market for the foreseeable future.

Specs: Processor, AMD Phenom X4 9500

Intel Core 2 Extreme QX9650
  • Editors' rating: 4 stars
      Overall score: 8.3 (4.0 stars)
Intel Core 2 Extreme QX9650 Reviewed on 10/28/2007

The Bottom Line: The CPU market is due for a lot of upheaval over the next 12 months, so you might be wise to wait for a clearer picture before plunking down $1,000 or so on Intel's new Core 2 Extreme QX9650 quad-core desktop processor. But if you want to claim ownership of the fastest multicore CPU around today, look no further.

Specs: Processor, Intel Core 2 Extreme QX9650

Intel Core 2 Extreme QX6850
  • Editors' rating: 4 stars
      Overall score: 8.3 (4.0 stars)
Intel Core 2 Extreme QX6850 Reviewed on 07/17/2007

The Bottom Line: The quad-core Core 2 Extreme QX6850 keeps the desktop CPU performance belt tied firmly around Intel's waist at a price that helps offset the lack of sizable performance gains. New products at the end of the year may outclass this new chip when they arrive, but for now, the QX6850 reigns supreme.

Specs: Processor, Intel Core 2 Extreme QX6850

Intel Core 2 Duo E6600
Intel Core 2 Duo E6600 Reviewed on 07/13/2006

The Bottom Line: Intel's Core 2 Duo line marks the end of AMD's run of dominance through the dual-core desktop-processor landscape. Not only are Intel's new chips fast, efficient, and well designed, but they're also aggressively priced and sure to send ripples though the desktop PC industry. If you are buying or building a new computer, we recommend that a Core 2 Duo chip be at its center.

Specs: Processor, Intel Core 2 Duo E6600

Intel Core 2 Duo E6400 Reviewed on 07/13/2006

The Bottom Line: Intel's Core 2 Duo line marks the end of AMD's run of dominance through the dual-core desktop-processor landscape. Not only are Intel's new chips fast, efficient, and well designed, but they're also aggressively priced and sure to send ripples though the desktop PC industry. If you are buying or building a new computer, we recommend that a Core 2 Duo chip be at its center.

Specs: Processor, Intel Core 2 Duo E6400

Intel Core 2 Duo E6300
Intel Core 2 Duo E6300 Reviewed on 07/13/2006

The Bottom Line: Intel's Core 2 Duo line marks the end of AMD's run of dominance through the dual-core desktop-processor landscape. Not only are Intel's new chips fast, efficient, and well designed, but they're also aggressively priced and sure to send ripples though the desktop PC industry. If you are buying or building a new computer, we recommend that a Core 2 Duo chip be at its center.

Specs: Processor, Intel Core 2 Duo E6300

Intel Core 2 Extreme X6800
  • Editors' rating: 4 stars
      Overall score: 8.7 (4.0 stars)
Intel Core 2 Extreme X6800 Reviewed on 07/13/2006

The Bottom Line: AMD's Athlon 64 FX line has worn the desktop CPU performance crown for over a year. The king is dead. Intel's new flagship Core 2 Extreme X6800 not only hands AMD a defeat on all of our benchmarks, but it's also a more efficient, better designed chip overall.

Specs: Processor, Intel Core 2 Extreme X6800

Intel Core 2 Duo E6700
  • Editors' rating: 4h stars
      Overall score: 9.0 (4.5 stars)
  • User rating: 4 stars
Intel Core 2 Duo E6700 Editors' choice Reviewed on 07/13/2006

The Bottom Line: Intel's Core 2 Duo E6700 offers the best price-to-performance ratio we've seen in a desktop chip. For half the cost of AMD's top-of-the-line chip, you get identical if not superior performance and better power efficiency. AMD surprised us last year with its completely dominant dual-core chips, but Intel regains the crown with Core 2 Duo.

Specs: Processor, Intel Core 2 Duo E6700

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