What is Digg?39 Comments
- geminitojanus, on 10/12/2007, -0/+7Oh, and the article mentions a Pentium M with HyperThreading; yes it actually was made. No, you wouldn't want one. The Pentium M (and thus the P8 archetecure) simply took the Williamette apart piece by piece and replaced some of the newer units with older ones from their Tualatin Pentium 3 chip. What they ended up with first was basically a Pentium 4 with Pentium 3 FPUs and ALUs (and hyperthreading). Next, they cut hyperthreading off the chip, along with the branch predictor (the new BP unit was designed from the ground up for mobile chips). Next they cut off the cache logic/enumerators and replaced them with versions from the Mobile Pentium 3 (and the Cache was also redesigned so parts of it could be turned off). Lastly, the new version of SpeedStep was added, and micro-operation fusion was introduced to the instruction decoder to make better use of the chip (Micro-op fusion is the progenitor to HyperThreading in the Pentium 4; what's the use of filling up all of the units on the chip, if you're doing calculations you could have combined in the first place and ran as one instruction?).
What you ended up with was a very lean Pentium 4 with mean mobile power. The Pentium M would not have been possible without the Pentium 4 and the Pentium 3 before it, so even though Netburst did end up sucking, I appreciate the technology. - geminitojanus, on 10/12/2007, -0/+5Yes it's the same chip in the iMac Core Duo. No, this chip isn't 64 bit (while the extensions may be available on the chip, they were left off for a reason, much as Hyperthreading was left off in the first generation Pentium 4s because it was severely immature at the time).
It's highly likely that if you did find a way to turn these extensions back on (which I doubt you will, Intel probably used E-fuses to turn off the registers), if you did, you'd probably be sorely disappointed by the crashing and the inconsistancies. Remember, Intel shipped these chips without running tests on those areas of the chip (they effectively quarenteened it with e-fuses; this is the same procedure used to turn an ordinary Pentium into a Celeron), so these areas on the chip could be damaged and not work at all.
So, this is really a non-article, even though it's kinda cool they're ready for x86-64. - giant.robot, on 10/12/2007, -0/+3Unfortunately the 64-bit instructions are unavailable on the Yonah. All chip manufacturers do this when they grade different chips. Half of the USB 1.1 chipsets sold in the past few years are really USB 2.0 chips with the extra data lines left unconnected.
- robbh66, on 10/12/2007, -0/+2Direct link to the real article:
http://www.hexus.net/content/item.php?item=4604 - dleifelohcs, on 10/12/2007, -0/+2It's well-noted that XP Pro x64 Edition supports EMI.
XP Pro x64 only runs on 64 Bit Processors.
Supposedly the Yonah is a 64 bit processor.
Mactel machines use a Yonah Processor.
Getting Yonah processors to use the 64bit instructions will lead us to be able to run XP Pro x64 Edition on Mactels? - tape, on 10/12/2007, -0/+2"one AND the same".
come on, people. - mikeazorin, on 10/12/2007, -0/+1There must be some weird agreement or something, because Apple should really be hyping the 64-bit in laptop thing right now.
- foxhoundadmin, on 10/12/2007, -0/+1listen to what geminitojanus had to say. 64-bit is physically disabled for a reason.
- digmc, on 10/12/2007, -2/+3I'm using an Acer 5672WLMI with the Duo Core processor and just tried to boot a copy of Ubuntu 64Bit Live CD... Guess what! I get a message saying the processor does not support 64Bit instructions.
No Digg! - Kitsune818, on 10/12/2007, -0/+1This reminds me of the difference between a P4 505 and a 506.. They just didn't burn out the 64 bit on the 506.
- Gamil, on 10/12/2007, -0/+1No Sh*t Sherlock!, and i thought that Intel would use 2 16 bit cores, what was i thinking. but guess what the reason why Intel doesn't advertise that it is 64bit is because the processor doesn't contain a 64bit instruction set. It's not that Intel has just disabled the 64bit abilities, it's because the processor doesn't know how to use both 32bit cores to handle 64bit instructions.
Besides, if you want a 64bit processor, go with AMD. And compare the chip architectures. AMD has been making CONSUMER 64bit processors for a lot longer than Intel. Sounds like AMD has more experience with 64 bit than Intel. Last time i counted, Intel had less than 10 consumer 64bit processors, all of them extremely expensive, and ALL of them were dual core, not native 64 bit single cores. And AMD has more than 15 64bit consumer processors, many of which are natively 64bit single core processors.
hmmm.... gee i wonder why Cray Supercomputers use AMD. - gamekid, on 10/12/2007, -0/+0"Yes, that Core Duo you have right now is a 64-bit chip."
--but I DON'T have one you insensitive clod! - sud0n1m, on 10/12/2007, -0/+0Hey, that didnt put my shameless plug tags in there - I guess it thought they were html!
- DenZ88, on 10/12/2007, -0/+0Interesting..
Maybe Vista is going to be 64-bit for all editions - cawpin, on 10/12/2007, -0/+0LOL ^^ Ditto. That's exactly what I was thinking.
For those who don't understand, it is "One and the same." - yaroze, on 10/12/2007, -0/+0Alot of features can be limited by Chipsets, example, JT or Jackson Technology more commonly known an HT was available on the Willamette P4s (yes the 1st ones) but the Chipsets back then kept chocking on extra data being issued/used
so they turned it off in the CPU.
this is quite common, yes the CPU can do it, but the rest of the platform can't handle it. - appidydafoo, on 10/12/2007, -0/+0"One in the same"... *golf clap*
- sud0n1m, on 10/12/2007, -0/+0Is there anyone exploring this avenue to enable the 64-bit instructions on the intel Mac? That seems like a great way for me to get rid of this $11,288 burning a hole in my pocket.
http://windowsxp.onmac.net
- inactive, on 10/12/2007, -0/+0This is cool, people got more than they bargained for.
- foxhoundadmin, on 10/12/2007, -0/+0"Getting Yonah processors to use the 64bit instructions will lead us to be able to run XP Pro x64 Edition on Mactels?"
no. mactels use a bios replacement known as efi. xp uses bios. they are compatible (via legacy support), but apple chose not to include legacy bios support in with their efi. go figure. - gamekid, on 10/12/2007, -0/+0"Hey, that didnt put my shameless plug tags in there - I guess it thought they were html!"
testing: bold italic plug
Assuming you weren't joking of course. ;) - gamekid, on 10/12/2007, -0/+0Yup, tags are removed. b, i, and plug tags have no effect. ;)
- TomPetty, on 10/12/2007, -0/+0real link: http://www.hexus.net/content/item.php?item=4604
- mmartin, on 10/12/2007, -0/+0"I'm using an Acer 5672WLMI with the Duo Core processor and just tried to boot a copy of Ubuntu 64Bit Live CD... Guess what! I get a message saying the processor does not support 64Bit instructions.
No Digg!"
The same reason that it says it isn't it is disabled in the chipset! please learn to read. - Jozer99, on 10/12/2007, -0/+0Windows XP Professional 64 Bit edition is EMI compatable, but only the version for Itanium. The x64 version is not EMI compatable. Gonna have to wait for Vista for that.
- justinaugust, on 10/12/2007, -0/+0No, this has nothing to do with it "being disable in the chipset." Sossoman was never announced to be a 64bit processor. This Hexus article is based on that piece of misinformation.
Lame. - mmartin, on 10/12/2007, -0/+0"pfft.
no it's not n00b."
The hell it isn't..... It's disabled in the chipset N00B! - websterphreaky, on 10/21/2007, -2/+1Come on Intel Kool Aid Drinkers! The Core Duo is nothing more than a redux of the Pentium 3 of the 1990's in a shrunken circuit package with some slight redesign by Intel's Israeli "budget" design center! It wasn't even meant to be a full product release until Intel's main project flopped and AMD was clearly eating Intel alive in the 64-bit consumer market.
IT'S ONLY TWO 32-Bit P-3 cores, NOT a true 64-Bit processor. The REAL truth is available on the net, buried by the Intel whore media, but it is there if you look hard. - diggfanboy, on 10/12/2007, -2/+1Isn't this the same info??
http://digg.com/apple/Intel_s_Core_Due_capable_of_EM64T_and_VT_(hidden_features_gems)_
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http://aboutdigg.blogspot.com - yikiad, on 10/12/2007, -1/+0isn't this the same chip in the imac?
- shockingbird, on 10/12/2007, -2/+1Dupe
- diggnationdevon, on 10/12/2007, -1/+0Yes!!!!!!!!!!!!!!!!
- diggfanboy, on 10/12/2007, -2/+0@ geminitojanus
Wow that was more information then I ever expected. Thanks.
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http://aboutdigg.blogspot.com - ramsinks.com, on 10/12/2007, -3/+0pfft.
no it's not n00b. - inactive, on 10/12/2007, -5/+1just refreshed and got 64 diggs on page, lol
- tardmongerster, on 10/12/2007, -5/+0No *****, Sherlock. If you bought a new chip in the past 6 months, it's x64.
- inactive, on 10/12/2007, -5/+0thats so funny, 69!
- Rice, on 10/12/2007, -5/+0just refreshed and got 69 diggs on page, lol
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