HD Flash? One of my friend has a Pentium 4 3.0GHz system based on the Prescott core. It can't play 720p Youtube videos without significant stuttering.
Well, I never had any problems with HD playback with my lousy Pentium 4 3.40GHz, albeit I had an HD 2600PRO. Heck, even my laptop was able to play a 8.2GB x264 1080P movie without significant suttering, it did once in a while, like every 30 seconds, but not bad considering its old technology.
I said clock for clock. If you look at the link originally posted, the benchmarks pretty much follow this. Atom also has more bandwidth to help make up for the in order handicap.
I'm not really understanding how you're concluding that out of order vs in order leads to more responsiveness despite both CPUs benchmarking the same. Work being done just as fast is work being done just as fast...
Benchmarks and real scenarios are totally different. An out of order Atom would show even better results that are posted there. A Dual Core Athlon 64 smokes a Pentium 4, why an Atom Dual Core doesn't smoke it, it only outperforms it, doesn't smoke it like a real Dual Core processor like Pentium E series or Athlon X2. (Dual Core Atoms are just too crippled to call them Real Dual Cores, they're like cheesy Dual cores for me,

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What Tom's Hardware shows is that, in branchy/dynamic/Non linear code, Atom is faster than a Pentium 4 thanks to its shallow execution pipeline, but in linear code like video encoding, the Pentium 4 is faster, Netburst architecture always has been very bad for general purpose code that requires lots of loops, subroutines and branches, that's why in such scenarios like Office, Athlon 64 was considerably faster overall. But in Handbrake, the Atom being faster than the Pentium 4 might be because of more optimizations like SSE3/SSE4/etc instructions, the Pentium 4 used in that review is only SSE2, but God only knows....
QUOTE from the Tom's hardware review:
"Performance? Don’t Expect Too Much
Performance-wise, there are benchmarks in which the old Pentium 4 still does well. This applies to workloads that haven’t been multi-threaded or coded to take advantage of newer instruction set enhancements, such as SSE3. All others, though, run much faster on the dual-core Atom D510, mostly thanks to its second processing core. The performance difference is glaring.
Note that all of the test systems deliver rather limited performance if you compare them to a modern PC based on an AMD Athlon II, Phenom II, or Intel’s Core i3/i5/i7. We’re clearly talking about entry-level performance in this article. "