Date: Tue, 2 Aug 2005 08:36:37 -0400 From: B Thomas <bjthomas3@gmail.com> To: freebsd-smp@freebsd.org Subject: Re: Experiences with Intel 820 Dual-Core.... Message-ID: <a8a6bd9805080205366b90e3d@mail.gmail.com> In-Reply-To: <20050802120036.015A616A421@hub.freebsd.org> References: <20050802120036.015A616A421@hub.freebsd.org>
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The Pentium D 820 is not HT enabled. You get 2 cores, but they do not support multiple hyperthreads per core. I'm typing this on a new D 820 system, and there are 2 cores, but that's it. See http://www.intel.com/products/processor/pentium_D/index.htm for more info. As for overall performance, it's a bit of apples to oranges. My other system (hyperthreaded) had a faster clock speed, but the 820 has a larger cache and somewhat faster data paths. Overall, the dual core feels faster, but it may be the overall system and not the processor. -b > Message: 2 > Date: Mon, 1 Aug 2005 21:57:43 -0400 > From: Indigo 23 <indigo23@gmail.com> > Subject: Re: Experiences with Intel 820 Dual-Core.... > To: freebsd-smp@freebsd.org > Message-ID: <6f50eac405080118571e8e817b@mail.gmail.com> > Content-Type: text/plain; charset=3DISO-8859-1 >=20 > Well more specifically, I was just wondering if it is a wise idea to turn= on > HyperThreading (i.e. will I see any benefit performance wise)? >=20 > PS. I know about the security issue regarding HT already.
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