Atom HT gain

Article: Medfield, Intel's x86 Phone Chip
By: Foo_ (foo.delete@this.nomail.com), January 25, 2012 8:06 am
Room: Moderated Discussions
Wilco (Wilco.Dijkstra@ntlworld.com) on 1/25/12 wrote:
---------------------------
>
>I don't see how you get to HT giving a 70% speedup - that would be amazing if it
>were true. IntelUser's claim is 2 real cores are 30% faster than 1 HT core on some
>benchmarks, so that's 2/1.3 = 1.54, ie. a 54% HT gain. I can imagine this would
>be true for a benchmark which has a lot of cache misses (as Atom stalls due to being
>in-order), but I doubt this is typical. Is there evidence that HT does much better
>on average than the 20-30% typically claimed?

From my experience on a (now dead) Atom netbook, the HT speedup is generally around 40%. This is in typical desktop usage (e.g. compiling).

20-30% is what you get on a Core i3 (personal experience there too).
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