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Date:      Tue, 4 Feb 2014 18:23:08 -0600
From:      Jim Thompson <jim@netgate.com>
To:        =?windows-1252?Q?=22C=2E_Bergstr=F6m=22?= <cbergstrom@pathscale.com>
Cc:        Thomas Zander <riggs@freebsd.org>, freebsd-hackers@freebsd.org, Baptiste Daroussin <bapt@FreeBSD.org>
Subject:   Re: opteron a1100 arm
Message-ID:  <8537A333-176E-4DF4-A712-2ADFE1B75338@netgate.com>
In-Reply-To: <52F16BA4.4060202@pathscale.com>
References:  <alpine.BSF.2.00.1401311911120.2427@wojtek.tensor.gdynia.pl> <1391538649.19169.79261269.3C5F49D1@webmail.messagingengine.com> <CAFU734xXWyc_TqBJ7e4MhD2nB01BAejR_1vT9%2B_5Ar5mJncncA@mail.gmail.com> <493DEB39-C4B4-409E-B8B2-B1B11E013754@netgate.com> <20140204223528.GF23872@ithaqua.etoilebsd.net> <52F16BA4.4060202@pathscale.com>

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On Feb 4, 2014, at 4:37 PM, C. Bergstr=F6m <cbergstrom@pathscale.com> =
wrote:

> I don't track the Atom family and not sure if C2000 is the new =
out-of-order version, but until that is available - this is no =
comparison by a long shot.

Yes, the C2000 SoCs and Bay Trail are Silvermont architecture.  =
Silvermont has OOE and a better branch predictor than did Bonnell or =
Saltwell.
At 22nm, Intel had enough die area to just add in more cores rather than =
rely on =93hyper threading" for better threaded performance so Hyper =
Threading isn=92t part of this SoC.  The ISA
is roughly Westmere (think 2010 Core architecture).  AES-NI, SSE4.1/4.2 =
and extended page tables (so: bhyve) are all =91in there=92.

> Also 5w on the cpu package could easily be made up for in a superior =
motherboard and chassis design. Think about how much power interconnects =
takes, PCIe and everything else..

That=92s why the infrastructure guys (	=95 Dell, HP, NEC, Ericsson, =
Quanta, Supermicro, etc) are building micro server systems with 450 =
=91nodes=92 per rack.=



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