AMD launches 65nm X2s

By Justin Mann on December 21, 2006, 12:01 PM
AMD promised 65nm X2's for this month, and they have delivered. While not offering any spectacular core revisions that will see performance boosts, they have given themselves a lot of leverage for faster clock speeds and reduction in power requirements. How much of a benefit are they seeing? From the 4000+ to the 5000+, Techreport has taken an in-depth look at the 65nm X2s, all of which have a 65W TDP. This is a 27% reduction in dissipation from their 90nm counterparts, a significant chunk. Core voltages have been lowered, and pricing remains the same. A 4000+ is coming in at only $169, almost half of what the 3800+ sat at over over a year.

The article goes over power efficiency and overclocking potential for these revised CPUs. The results are pretty much expected. When idling, the 65nm parts are able to boast lower power draws than the Core 2 and comparable older X2s, and perform well under load. Until AMD improves their core, however, they won't be beating Intel in the performance arena. Even when overclocked, the Core 2 is still outpacing the X2 clock for clock. It's a great step, though, and AMD is still full of promises.

User Comments: 1

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peas said:
"Core 2 is still outpacing the X2 clock for clock"Core 2 has only marginally better IPC (instructions per clock) than the Athlon X2. Some of that differential is larger cache which is easy to slap on. The rest can easily be made up for with raw clock speed. Remember too that benchmarks can be misleading. Performance is very much dependent on how code is written and compiled. One app may run faster on Core2, while another may run faster on X2.Intel rode the nasty P4 for years. It has terrible IPC, yet people still bought it because of Intel's marketing with clock speed. The Athlon trounced it not only in efficiency but in pure performance, yet many, many people still bought the P4. Comparing the Core2 and X2, the differential is *much* smaller than with the P4. The differential is so small that it's basically non-existent. A few tweaks to the X2 could very well push it past the Core2.Both Intel and AMD are having difficulty improving the architecture of their chips. AMD's K8 (X2) is largely based on K7 (the original Athlon). Intel's Core2 is largely based on P6 (Pentium Pro, II, III). The defining battle between them will be their true next-generation architectures. At this point, AMD has established itself as a major player and Core2 does not change that.
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