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• CNET Editor rating:
  3.5 stars Very good

  Overall score: 7.0 (3.5 stars)
• Average user rating: 4.0 stars out of 7 reviews

The Bottom Line: AMD's new high-end dual-core CPU offers plenty of bang for the buck, outpacing Intel's Pentium 965 Extreme Edition, which costs $200 more. Sounds like a good deal, but wait to see what Intel's next-gen Core 2 Duo chips have to offer when they debut later this year. Read review

Specs: AMD Athlon 64 X2 5000+ Energy Efficient

• CNET Editor rating:
  3.0 stars Good

  Overall score: 6.0 (3.0 stars)
• Average user rating: 3.0 stars out of 6 reviews

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. Read review

Specs: AMD Phenom X4 9500

• CNET Editor rating:
  0.0 stars

  Overall score: 0.0 (0.0 stars)
• Average user rating: 0 stars No reviews, write one!

Specs: Intel Core i5 i5-3330

• CNET Editor rating:
  0.0 stars

  Overall score: 0.0 (0.0 stars)
• Average user rating: 4.5 stars out of 2 reviews

Specs: AMD FX FX 4100

• CNET Editor rating:
  4.0 stars Excellent

  Overall score: 8.7 (4.0 stars)
• Average user rating: 5.0 stars out of 4 reviews

The Bottom Line: If you thought dual cores were over the top, get ready. Intel presents the Core 2 Extreme QX6700, a single CPU with four distinct processing cores. At $999, the first quad-core CPU will remain an enthusiast part for a while, but as a glimpse of the future, it's clear that clock speed is out and core counts are in. Read review

Specs: Intel Core 2 Extreme QX6700

• CNET Editor rating:
  3.0 stars Good

  Overall score: 6.7 (3.0 stars)
• Average user rating: 4.5 stars out of 8 reviews

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. Read review

Specs: AMD Phenom X4 9850

• CNET Editor rating:
  3.0 stars Good

  Overall score: 6.0 (3.0 stars)
• Average user rating: 4.0 stars out of 3 reviews

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. Read review

Specs: AMD Phenom X4 9600

• CNET Editor rating:
  0.0 stars

  Overall score: 0.0 (0.0 stars)
• Average user rating: 0 stars No reviews, write one!

Specs: AMD Sempron LE-1250 Energy Efficient

• CNET Editor rating:
  0.0 stars

  Overall score: 0.0 (0.0 stars)
• Average user rating: 0 stars No reviews, write one!

Specs: Intel Core i7 i7-3770K

• CNET Editor rating:
  0.0 stars

  Overall score: 0.0 (0.0 stars)
• Average user rating: 0 stars No reviews, write one!

Specs: Intel Xeon

• CNET Editor rating:
  0.0 stars

  Overall score: 0.0 (0.0 stars)
• Average user rating: 0 stars No reviews, write one!

Specs: AMD FX FX-4170

• CNET Editor rating:
  0.0 stars

  Overall score: 0.0 (0.0 stars)
• Average user rating: 0 stars No reviews, write one!

Specs: Intel Core i5 i5-2400

• CNET Editor rating:
  0.0 stars

  Overall score: 0.0 (0.0 stars)
• Average user rating: 0 stars No reviews, write one!

Specs: AMD FX FX-4130

• CNET Editor rating:
  0.0 stars

  Overall score: 0.0 (0.0 stars)
• Average user rating: 0 stars No reviews, write one!

Specs: AMD FX FX 6100

• CNET Editor rating:
  0.0 stars

  Overall score: 0.0 (0.0 stars)
• Average user rating: 5.0 stars out of 1 review

Specs: Intel Celeron E3400

• CNET Editor rating:
  0.0 stars

  Overall score: 0.0 (0.0 stars)
• Average user rating: 0 stars No reviews, write one!

Specs: Intel Xeon E5420

• CNET Editor rating:
  0.0 stars

  Overall score: 0.0 (0.0 stars)
• Average user rating: 0 stars No reviews, write one!

Specs: AMD FX FX-8120

• CNET Editor rating:
  0.0 stars

  Overall score: 0.0 (0.0 stars)
• Average user rating: 5.0 stars out of 1 review

Specs: Intel Xeon E3110

• CNET Editor rating:
  0.0 stars

  Overall score: 0.0 (0.0 stars)
• Average user rating: 0 stars No reviews, write one!

Specs: AMD A series A6-3670K

• CNET Editor rating:
  0.0 stars

  Overall score: 0.0 (0.0 stars)
• Average user rating: 5.0 stars out of 1 review

Specs: AMD Athlon 64 LE-1640 Energy Efficient

• CNET Editor rating:
  0.0 stars

  Overall score: 0.0 (0.0 stars)
• Average user rating: 0 stars No reviews, write one!

Specs: AMD A series A4-3300

• CNET Editor rating:
  0.0 stars

  Overall score: 0.0 (0.0 stars)
• Average user rating: 0 stars No reviews, write one!

Specs: AMD Athlon 64 X2 5200+ Energy Efficient

• CNET Editor rating:
  0.0 stars

  Overall score: 0.0 (0.0 stars)
• Average user rating: 0 stars No reviews, write one!

Specs: Intel Core i5 i5-650

• CNET Editor rating:
  0.0 stars

  Overall score: 0.0 (0.0 stars)
• Average user rating: 4.5 stars out of 6 reviews

Specs: AMD Athlon 64 X2 6000+

• CNET Editor rating:
  0.0 stars

  Overall score: 0.0 (0.0 stars)
• Average user rating: 4.5 stars out of 2 reviews

Specs: Intel Core i7 i7-2600K