Use a Pentium M in your 478 board?

ACHIEVER · 03-05-2005, 02:18 PM

It may soon be possible. Details are limited but is worth the read.

Link

rushnrockt · 03-05-2005, 08:58 PM

Quote: Originally Posted by ACHIEVER

It may soon be possible. Details are limited but is worth the read.

Link

Why would you want to though? For a lot more in price for just the processor, you are not getting a speed advantage that you have a need for. Athlon XP-M would do just as well for fraction of a price. I also question how cheap the adapter would be, since Pentium M has similar pinout, but entirely different power setup than any of the Petium 4's, which should make one bulky adapter causing some loss of performance.

ACHIEVER · 03-06-2005, 11:12 AM

Well, obviously this isn't something we're all going to be running out to buy. It could be interesting in your desktop though. But while many people use VIA boards, it seems to me at least, that more and more are moving towards something less anemic. A VIA can still hold it's own, depending on how it's set up. But more and more posts keep poping up about "how can I power this" and the poster (usually a noob) is talking about a P4. I would agree with you about the XP-M being a very good choice, especially for the investment. But many don't want a cookie cutter, me too solution. If money were less of a worry, a Pentium M is an excelent choice for the car, with its lower power needs and less heat produced. (wasted) And if your building new right now, why not plan for something that has a chance for keeping up in the future. I personally couldn't afford one for the car, but if Intel starts selling alot because of this increase in uses, maybe the price would come down a little. If you're looking at this as a possibilty, you probably own a P4 board already. If the adapter is reasonably priced, it could actually become a viable solution. From my (limited) understanding, the real difference in power, is that the M just runs on less voltage. The adapter doesn't look too bulky to me, but we have no way of knowing about any performance issues that could be related to using it. I just found it interesting, and thought others might too. I know I'd like to hear how it really ends up working, and will watch for reviews on it when the time comes.

UncleGeek · 03-06-2005, 02:50 PM

Why use an adapter at all when you could just use THIS . 1.5 Ghz, 400 Mhz. FSB, all @ 25 watts!!! and $100 bucks!!!

rushnrockt · 03-06-2005, 04:29 PM

Quote: Originally Posted by UncleGeek

Why use an adapter at all when you could just use THIS . 1.5 Ghz, 400 Mhz. FSB, all @ 25 watts!!! and $100 bucks!!!

Seems like you missed out on the part where the Pentium/Celeron M processors need adapter. The fact that it has 478 pins has nothing to do with it being usable in desktop 478 pin mobos. Like I mentioned before, the pins do not correspond. As for the desktop use of Ms without adapter, read more here
http://www.anandtech.com/cpuchipsets...oc.aspx?i=2342

sagekoala · 03-09-2005, 01:23 PM

Quote: Originally Posted by rushnrockt

Seems like you missed out on the part where the Pentium/Celeron M processors need adapter. The fact that it has 478 pins has nothing to do with it being usable in desktop 478 pin mobos. Like I mentioned before, the pins do not correspond. As for the desktop use of Ms without adapter, read more here
http://www.anandtech.com/cpuchipsets...oc.aspx?i=2342

yeah i quickly skimmed the article ... but i really didn't see anything about the celeron M in there ... which is what UncleGeek proposed. the reason this adapter is news is that it allows you to put a 479 pin pentium M into a 478 pin socket. but see the reason your argument isn't exactly valid in this case is that the celeron M IS a socket 478 and therefore SHOULD work on "any" 478 board.

I for one, am glad he posted that lil tidbit. I was going to go with a matx with a mobile athlon at 35 watts .... but why not go mitx at 25? (yes yes epia i know ... but no thanks)

rushnrockt · 03-09-2005, 02:19 PM

Quote: Originally Posted by sagekoala

yeah i quickly skimmed the article ... but i really didn't see anything about the celeron M in there ... which is what UncleGeek proposed. the reason this adapter is news is that it allows you to put a 479 pin pentium M into a 478 pin socket. but see the reason your argument isn't exactly valid in this case is that the celeron M IS a socket 478 and therefore SHOULD work on "any" 478 board.

I for one, am glad he posted that lil tidbit. I was going to go with a matx with a mobile athlon at 35 watts .... but why not go mitx at 25? (yes yes epia i know ... but no thanks)

Yeah, I figured that you just skimmed it. The problem is not the number of pins, but the voltages used at the I/O's of the Pentium M. They are 1.05V as opposed to the 1.3V of the desktop P4. Desktop Northbridge is simply not capable of working with these voltages and that is also why an adapter would be quite a fit to make, since the voltages would need to be stepped up. So my argument is valid and sound too boot, sorry to disappoint.

ACHIEVER · 03-22-2005, 12:40 PM

Another short article with some additional information.

Link

Priced under $50 according to Asus. Very limited support for it as you need a bios update. Expected out in a couple weeks.

Peoples · 03-22-2005, 12:45 PM

i have a 479 1.3ghz Celeron M if anyone wants it..... $20 shipped

rushnrockt · 03-26-2005, 03:47 AM

Quote: Originally Posted by ACHIEVER

Another short article with some additional information.

Link

Priced under $50 according to Asus. Very limited support for it as you need a bios update. Expected out in a couple weeks.

And only with limited motherboards

http://www.anandtech.com/cpuchipsets...oc.aspx?i=2382

ACHIEVER · 03-26-2005, 11:26 AM

Quote: Originally Posted by rushnrockt

And only with limited motherboards

And that's probably the real deal killer there. Though the combo board/adapter package could be bought I was hopping this would be something you could consider adding to a P4 board you already owned.

DarquePervert · 04-30-2005, 04:04 PM

Found a review of this adaptere here:
http://www.pcper.com/article.php?aid=133&type=expert

Regarding the discussion here... Here's a good quote:

Quote:

In addition to making the adaptor, Asus also needed to make some slightly modified BIOS files for the motherboards that support the Pentium M processor via the CT-479. As this processor uses a different FSB, different multipliers and very different voltage and power regulations, getting this done is the main reason why so few boards are currently supporting the adaptor.