Intel Atom Processor
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From: Andrei Popescu on 17 Feb 2010 02:50 On Tue,16.Feb.10, 10:34:09, Stefan Monnier wrote: > >> Which architecture should I use for an Intel Atom Processor? > > It depends on the exact model. > > There are some Atom micros supporting 64 bits (amd64) but the vast > > majority don't (just 32 bits, so i386 is required), so better check first > > the serial number. > > Don't bother checking: since you had to ask the question, you won't care > whether you run a 64bit or 32bit kernel, and since those processors > don't support much more than 2GB anyway, there's no point running > a 64bit kernel. Atom 330 supports 4GB AFAIK. Regards, Andrei -- Offtopic discussions among Debian users and developers: http://lists.alioth.debian.org/mailman/listinfo/d-community-offtopic
From: Marc Olive on 17 Feb 2010 03:00 El Tuesday 16 February 2010 16:52:06 Stan Hoeppner va escriure: > As a bonus, due to various architectural reasons I won't delve into, 32bit > binaries will usually run slightly faster than the 64 bit cousins Really? Didn't know. 64bit binaries should be faster than a 32bit one... where's the problem? > -- > Stan -- Marc Olivé Grup Blau -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/201002170833.07108.marc.olive(a)grupblau.com
From: Kelly Harding on 17 Feb 2010 03:20 >> >> Don't bother checking: since you had to ask the question, you won't care >> whether you run a 64bit or 32bit kernel, and since those processors >> don't support much more than 2GB anyway, there's no point running >> a 64bit kernel. > > Atom 330 supports 4GB AFAIK. > It depends which chipset it is put with, theres a few combinations iirc. Some are limited to 1.5Gb/2Gb, others more. Dunno about the ION combo. kelly -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/e4f72f791002170010i5be0a18awb599db26485eab5f(a)mail.gmail.com
From: Andrei Popescu on 17 Feb 2010 03:30 On Mi,17.feb.10, 08:10:36, Kelly Harding wrote: > > Atom 330 supports 4GB AFAIK. > > It depends which chipset it is put with, theres a few combinations iirc. > > Some are limited to 1.5Gb/2Gb, others more. > > Dunno about the ION combo. It's the nVidia ION I had in mind ;) Regards, Andrei -- Offtopic discussions among Debian users and developers: http://lists.alioth.debian.org/mailman/listinfo/d-community-offtopic
From: Stan Hoeppner on 17 Feb 2010 05:40
Marc Olive put forth on 2/17/2010 1:33 AM: > El Tuesday 16 February 2010 16:52:06 Stan Hoeppner va escriure: >> As a bonus, due to various architectural reasons I won't delve into, 32bit >> binaries will usually run slightly faster than the 64 bit cousins > > Really? Didn't know. > 64bit binaries should be faster than a 32bit one... where's the problem? Instruction word size. On average, depending on individual instruction encoding, the word length for 64bit binaries can be close to double the word length of 32bit binaries. What do you think the effect of this is on L1 and L2 instruction caches? That's right, you can fit many more of the 32bit binary instructions in the caches than 64bit instructions. There are plenty of rename registers available, and when combined with the extra cache loading, the slight performance boost allowed by the extra 8 GPRs of 64bit mode is negated and 32bit code pulls slightly ahead. The only real advantage of 64bit mode for the vast majority of desktop and server applications is more efficient addressing of memory beyond 2GB. 32bit mode has to use PAE which is very inefficient compared to direct 64bit addressing. For any workstation or server that has 2GB of memory or less, 32bit OS and apps will be slightly faster than 64bit. We're only talking 1-2% per core here, basically not noticeable at the application level. You have to run timed benchies to see a 1-2% difference. Like I said, 32bit mode will be "slightly" faster than 64bit mode. I didn't say it would be perceptible. ;) -- Stan -- To UNSUBSCRIBE, email to debian-user-REQUEST(a)lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmaster(a)lists.debian.org Archive: http://lists.debian.org/4B7BC5E5.7070004(a)hardwarefreak.com |