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21 Comments
- antron, on 10/12/2007, -0/+5fanboydcs:
450mm is the size of the round silicon wafer that ICs are fabbed onto.
A bigger wafer means higher yields -- more ICs per wafer. - bovik, on 10/12/2007, -0/+1450mm is the wafer diameter = 18"
like a large pizza - Lord_oftheTrons, on 10/12/2007, -0/+0^-- No stupid digger.
I remember watching a while process on how Intel makes their wafers. Some pretty amazing technology. Building the silicon layer by layer, it was a good video. If I can find a link I'll post it. - randyest, on 10/12/2007, -0/+0"Uhhh, that would mean close to 1000 Yonah CPU's from one single wafer. Sweet!"
Uhh, a lot more than that. See, 450mm is 635850mm^2. Ignoring the small loss from taking square dice from a round wafer, 1/1000of the 450mm wafer is about 635mm^2, which would be a square die with 25mm edges. It's pretty much impossible to manufacture a die that big without defects.
According to http://episteme.arstechnica.com/groupee/forums/a/tpc/f/77909774/m/749002127731 Yonah is 90.3mm^2, or about 9.5mm on a side. So that would allow about 7000 Yonah dice to be made from a 450mm wafer.
That said, I don't know why that matters to you or anyone else; Yonah will never be made on 450mm wafers. By the time fabs are using 450mm wafers Yonah will be long obsolete. - mrmorris, on 10/12/2007, -0/+0"Uhh, a lot more than that."
You assume a 45nm process whereas I assume 65nm with Yonah 90mm^2 die. That amounts to some 1767chips, accounting for edge and yield loss I'd say we're close to the beforementioned 1000.
"By the time fabs are using 450mm wafers Yonah will be long obsolete."
Irrelevant, be it Yonah, Merom or something entirely different, there will be future laptop CPU's around that die size. - fuelvolts, on 10/12/2007, -0/+0the article is correct - they are refering to the wafer diameter, not the chip manufacturing process
RTFA!!!! - cyberdork, on 10/12/2007, -0/+0I wanna see those waferboxes and tweezers :-)
geez, I'm still working with 100mm wafers. - jd2mclar, on 10/12/2007, -0/+0I thought they must mean either micrometer or nanometer too, but the quote says: "The objective for the next generation is to make it more evolutionary,” Kramer added. “Three hundred millimeter was quite an abrupt change with many new standards. If we repeat that, we will have failed,” he added.
- oldcyborg, on 10/12/2007, -0/+0I can hardly imagine cutting chips from wafers the size of pizza (lge). I can see where it would be much better to go at it incrementally, and avoid the several billion dollar cost of ONE FAB.... Thats how much money there is in chips.... There have been several FABS built in the last 5 years, and all are operating in the black.... Tax breaks or not. Thats a helluva chunk of change to put into a gonna be obsolete factory, in five years...Whew...
Cyborg
yeah - scottmc, on 10/12/2007, -0/+0Sounds like the switch over to 450mm isn't going to happen until around 2012. Heck there still switching to 300mm now.
http://www.eetindia.com/ART_8800403586_1800007_ccc6a0ef_no.HTM - zezz, on 10/12/2007, -0/+0I used to make silicon wafers back when they came out with the 12" and that was just a few years ago. This is a huge, very important story on how chips will become cheaper to make. If anyone has any questions about wafer making I could probably still answer a few.
- scottmc, on 10/12/2007, -0/+0try this link instead? http://www.eetindia.com/ARTP_8800403586_1800007.HTM
- karch, on 10/12/2007, -0/+0dear god you retards make me sick
can't wait for the next paradigm though. for some reason faster and faster computers aren't doing it for me. i need something fundamentally different. i need virtual reality. - HardwareWeenie, on 10/12/2007, -0/+0Applied Materials has "how to make a chip" http://www.appliedmaterials.com/HTMAC/animated.html very educational. I work on IC Stage positioning systems, Applied Materials plays in every OTHER market, so this video is a little skewed towards their products. But it does give you a good idea what it takes.
- Netmindstorm, on 10/12/2007, -0/+0well you hammer on a wafer--I don't care what size, it's gonna crack which will greatly reduce chip yields
- MarcTheLad, on 10/12/2007, -0/+0Yep, 450mm WAFERS for high yields, not process scale.
- oldcyborg, on 10/12/2007, -0/+0BTW, these chipmakers ALL hate each other...... Thats something to think about...
Cyborg
done already.. - Mythrl, on 10/12/2007, -1/+0wow..450mm...that's only half a meter thick...will wonders ever cease!
- mrmorris, on 10/12/2007, -1/+0Uhhh, that would mean close to 1000 Yonah CPU's from one single wafer. Sweet!
- fanboydcs, on 10/12/2007, -3/+0thats 45nm, why would they say 450-mm? idiots
- inactive, on 10/12/2007, -3/+0no digg, stupid typo
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