Date: Thu, 19 Apr 2001 19:45:27 -1000 (HST) From: Vincent Poy <vince@oahu.WURLDLINK.NET> To: Linh Pham <lplist@closedsrc.org> Cc: Jeremiah Gowdy <jgowdy@home.com>, Charles Burns <burnscharlesn@hotmail.com>, <kris@obsecurity.org>, <mwlist@lanfear.com>, <freebsd@sysmach.com>, <questions@FreeBSD.ORG> Subject: Re: the AMD factor in FreeBSD Message-ID: <Pine.BSF.4.31.0104191943460.2730-100000@oahu.WURLDLINK.NET> In-Reply-To: <Pine.BSF.4.33.0104191339210.49251-100000@q.closedsrc.org>
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On Thu, 19 Apr 2001, Linh Pham wrote: > On 2001-04-19, Vincent Poy scribbled: > > # Somehow I thought the Intel and AMD x86 CPUs were CISC and had a > # portion that was RISC. > > AMD uses their RISC86 engine to turn crummy x86 instructions into > RISC-like instructions to crunch them more efficiently as it can. The > Pentium III processors do something like that since the P6 core, but the > original P6 core sucked at 16-bit code... so Intel had to reduce the > optimizations in the Out-of-Order engine to increase 16-bit performance > in the Pentium II. Interesting. I guess I never read about how AMD did it... I just remember reading a comparison of the Pentium versus the PowerPC 603 I think and it somehow gave the indication that Intel CPU's were CISC with RISC and the PowerPC was 100% RISC. > In reality... the x86 processors and, what people tend to call, RISC > processors now are really post-RISC. Trying to expand IPC and increase > Mhz :) Intel went the opposite with the P4. True but speaking about AMD, PIII and the likes, where does the Xeon fit in? Cheers, Vince - vince@WURLDLINK.NET - Vice President ________ __ ____ Unix Networking Operations - FreeBSD-Real Unix for Free / / / / | / |[__ ] WurldLink Corporation / / / / | / | __] ] San Francisco - Honolulu - Hong Kong / / / / / |/ / | __] ] HongKong Stars/Gravis UltraSound Mailing Lists Admin /_/_/_/_/|___/|_|[____] Almighty1@IRC - oahu.DAL.NET Hawaii's DALnet IRC Network Server Admin To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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