AMD Processors: Athlon 64 X2 3800+
Intel Processors: Pentium D 805, 820
Our final dual-core category is something of an accident of history. Because Intel recently introduced its third generation of dual-core processors with the Core 2 Duos, but is still making some first-generation 8XX-series parts, the latter are now dirt cheap.
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Introduction Performance Dual-Core CPUs Mainstream Dual-Core CPUs Bargain Dual-Core CPUs Single-Core CPUs Quick Charts: Specs & Prices |
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Intel Pentium D 805, 820: True, the 2.66-GHz 805 and 2.8-GHz 820 are fabricated in Intel's older, 90-nm process technology and have smaller L2 caches than their 9XX cousins (2 x 1MB versus 2 x 2MB). Other than that, however, there's no significant difference. Though the more advanced 65-nm process used with the 9XX would lead one to assume that they're better on power consumption, the 805 and 820 do okay on that score, with a 95W thermal design power spec. Yet, at street prices of $93 and $120, respectively, they're the cheapest dual-cores around.
AMD Athlon 64 X2 3800+: The 3800+ boasts the same 2000-MHz HyperTransport bus as its higher-end 5000+ sibling. With a 2.0-GHz clock and 2 x 512KB L2 cache, it's also got nothing to be ashamed of, spec-wise. However, at $162, it doesn't quite bring up the bargain-priced rear of the market the way the low-end Intel 805 and 820 do.