Atom to stay in-oder or go OoO?

By: Ungo (a.delete@this.b.c.d.e), October 1, 2009 2:00 am
Room: Moderated Discussions
AM (myname4rwt@jee.male) on 9/30/09 wrote:
---------------------------
>Ungo (a@b.c.d.e) on 9/28/09 wrote:
>---------------------------
>>AM (myname4rwt@jee.male) on 9/28/09 wrote:
>>---------------------------
>>>.. is something I've been wondering about. I mean, face it: to say that power efficiency
>>>of available Atoms compared to available ULV Core2s is unimpressive is an undeserved compliment.
>>>
>>>Power efficiency of Atom's main bins (4W/core, 1.6 GHz, 512k/core)
>>
>>http://ark.intel.com/ProductCollection.aspx?familyID=29035
>>
>>Atom 230 isn't a 'main bin'. It's the bin for leaky parts which Intel salvages
>>by selling them for use in desktops rather than the main volume driver for Atom (netbooks).
>>
>>The Z series Atoms are relatively recent developments, and are now likely the most
>>representative.
>
>The "representative" Z series Atoms are not available from Intel. Period.

You made that up. Admit it.

Because even a little effort expended on your part could have turned up search results like this:

http://tinyurl.com/yb2hx3u

Or this:

http://www.compulab.co.il/fitpc2/html/fitpc2-sb-datasheet.htm

Or, if you want something faster than 1.6 GHz:

http://tinyurl.com/ycsabke

>But if you're looking for the most common Atom bin by number of
>>chips shipped to date, that would be the N270 (2.5W @ 1.60GHz), the backbone of the netbook revolution.
>
>Source?

Just look up the specs of almost _any_ Atom netbook. If it's 1.6 GHz (and most of them are), it's either a N270 or (if introduced recently) a Z530.

Here, let me help you with a link to an amazon search for N270 in the netbook category (Amazon's not a bad point of reference since they carry most if not all of the major netbook brands):

http://tinyurl.com/y9d7xx2

Then go and try to find any Atom 230 netbooks on Amazon. I dare you...

(Hint: don't waste your time.)

>>>is clearly worse if you consider there have been 10W DC 1.6 GHz 3M Core2s (SU9600) for some time. And quickly checking for benchmarks vs Core2, e.g. I used this: http://www.tomshardware.com/reviews/intel-atom-efficiency,2069-8.html
>>
>>>it appears low-power 2.5W bin hardly makes it a winner on the metric it was allegedly
>>>optimized for. And power-efficiency at platform level -- just forget it.
>>
>>The THG article you linked to compares the performance of a 65W TDP 2.53GHz C2D
>>to a 4W 1.6GHz Atom 230, not a 10W 1.6GHz SU9600 to a 2.5W 1.6GHz N270 as you imply.
>
>Oh, and what would be the performance of the 10W part? :)

Why don't you tell me? It's up to you to support your argument. Don't ask me to do your legwork for you, it only makes you smell more trollish than you already do.

>>But if you look at what is available for pairing with the more current Z series
>
>Available?! I don't see Intel listing a single Z-series Atom as available.

You can't read?

http://ark.intel.com/ProductCollection.aspx?familyID=29035

"Status" column is the same for every Atom listed: "Launched". Yes, including every single Z series Atom.

>>Finally, I would note that there has been a rather large blind spot in much of
>>this discussion: die size. The SU9600 has a die literally 4x bigger than Atom N270.
>>(And 4x the TDP too.) Even after accounting for the fact that SU9600 has 2x as
>>many processor cores, it's still not terribly surprising that 2x the die area and
>>power budget results in a faster CPU core.
>
>You must have gotten my point completely wrong. That Atom loses in performance
>in a big way is not surprizing; surprizing part has to do with it doesn't seem to
>win in power efficiency either vs Core2.

The methodology by which you reached this conclusion is terrible, IMO. You should have at least tried to find a comparison between SU9600 and N270, or tried to find separate benchmarks of similar methodology. (Actually, SU3500 would be a better choice of C2D than SU9600, so you could compare one core to one core.)

Furthermore, why should you expect Atom to win in power efficiency? It was designed to hit a very low power target. That goal can be successfully achieved with good, bad, or average efficiency.

>>The flip side: it's economical for Intel
>>to sell the Atom at much, much lower prices.
>
>:) Oh give me a break, Banias derivative moved to 45nm and targeted for power efficiency
>would have hardly had any problem fitting the space and 4W/core power envelope,
>and I'm convinced would have looked *much* better on power-efficiency front combined with obviously higher performance.
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