When apple were using the G3 for their pro models, the powerbook and powermac had almost identical speeds. The desktop ran faster, but only slightly. Back then, apple didn't have to worry about the heat of the processor, so they could do that. The G4 is a *lot* hotter than the G3, so now they do have to worry. The G4 in the current tibook isn't a stripped down version of the desktop model, agreed, but it's running as fast as they can get it, whilst keeping within the heat levels they require. Have you seen the size of the heatsink the 1GHz model? It's massive!
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1gz TiBook?
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When apple were using the G3 for their pro models, the powerbook and powermac had almost identical speeds. The desktop ran faster, but only slightly. Back then, apple didn't have to worry about the heat of the processor, so they could do that. The G4 is a *lot* hotter than the G3, so now they do have to worry. The G4 in the current tibook isn't a stripped down version of the desktop model, agreed, but it's running as fast as they can get it, whilst keeping within the heat levels they require. Have you seen the size of the heatsink the 1GHz model? It's massive!
No, I haven't seen the 1ghz chip's heat sink. But what I was saying is that the 1ghz G4 is supposed to be cooler than the 667 G4 that they used to use in the TiBook, right? Maybe you're right.
(added) - If Apple wanted to get the TiBook to 1ghz, they could easily do so by using the 7445 version of the Apollo. They run a lot cooler than the 7455's. You'd lose the L3 cache, but you'd get the clock speed with no heat penalty.
BTW, how massive is "massive"? Is this heat sink larger than the ones used in P4's and Athlons?
NOTE - I went back to check my facts and came up with this. The 1ghz 7455 puts out 21.5 watts. The 667mhz 7451 puts out 14.5 watts. The 733mhz 7445 puts out 10.3 watts.
This tells me that Apple could definately use a fast 7445 without any changes to the current form of the TiBook. You'd lose a lot of performance, but they could advertise a 1ghz TiBook. But I guess they're doing it the right way by have full featured TiBooks instead of cut down ones.
Admittedly the actual level of heat is speculation. I believe the Tibook 800's have less of a problem with heat than the rev. b 667's did, so apple are getting close to a 1GHz, powerbook, i'm sure. By including L3 cache in current models, apple have pretty much ruled out the option of having a future powerbook without it, at least for the top model.
For reference, this is the innards of the Qag2002:
This if for a P4:
Yes, i know the Qag has to deal with two processors, but it's still quite a bit larger.
The quicksilver picture came from apple-history
www.apple-history.com/quickgallery.html?where=g4_quick_2002.html
www.apple-history.com/quickgallery.html?where=g4_quick_2002.html
britboy-
Keep in mind that the P4 uses active cooling (i.e. fan) to achieve the neccessary cooling level.
Apple opts to keep the case quieter by not using a fan and using a larger heatsink.
Keep in mind that the P4 uses active cooling (i.e. fan) to achieve the neccessary cooling level.
Apple opts to keep the case quieter by not using a fan and using a larger heatsink.
I can think of a couple of ways apple can bypass that limitation:
1. Migrate down .13 micron mfg. processes
2. use commercial water cooling methods on the powerbook
Moving down to .13 micron would probably end up giving a 1ghz chip that produces as much heat as a 667mhz chip because it would shrink the die size by almost 1/2.
The other method, water cooling, CAN be used to funnel the heat to the titanium casing more efficiently. I know what you guys are thinking, water cooling in a laptop? this guy is on crack!
It can happen tho, I've seen it done on pc laptops
Originally posted by Rower_CPU
britboy-
Keep in mind that the P4 uses active cooling (i.e. fan) to achieve the neccessary cooling level.
Apple opts to keep the case quieter by not using a fan and using a larger heatsink.
I may be going blind, but i'm pretty sure i see a fan in there. Where's someone with a dual 1GHz? They would know for sure.
I dont think that its the heat issue that has kept the 1 ghz Ti from our hands.
Its APPLE's business model.
There already is a 1 GHZ Ti in the cue! Large companys like APPLE always have these things worked out far in advance.
We are in the 800 Ti cycle. This cycle will be milked for what money its worth to the company. Rev C is a great cycle, the BEST yet!
There are benchmarks that place it close to the DP 1G, in some issues.
This Ti 800 is the best thing that the company has put out yet.
All the kinks worked out and the sweet inner core remains.
A testement to all that say not to buy the first version of anything.
Apple will milk this tit, for a while. Its as plentiful as a Renoir whore.
Sweeet!
Its APPLE's business model.
There already is a 1 GHZ Ti in the cue! Large companys like APPLE always have these things worked out far in advance.
We are in the 800 Ti cycle. This cycle will be milked for what money its worth to the company. Rev C is a great cycle, the BEST yet!
There are benchmarks that place it close to the DP 1G, in some issues.
This Ti 800 is the best thing that the company has put out yet.
All the kinks worked out and the sweet inner core remains.
A testement to all that say not to buy the first version of anything.
Apple will milk this tit, for a while. Its as plentiful as a Renoir whore.
Sweeet!
I might have to go and double check...
I know they didn't use them on previous PowerMacs...if that small bit of black plastic on the side is a fan it's a damn small one for a heat sink.
Originally posted by Rower_Dawg
I know they didn't use them on previous PowerMacs...if that small bit of black plastic on the side is a fan it's a damn small one for a heat sink.
Well, perhaps they don't need a big fan, considering how damn big that heatsink is
I've heard quite a few people comment on how *loud* the dual 1GHz powermac is though. Ah well, i'm not going to lose sleep over this matter Grokgod~ i love your choice of wording
The 1 GHz powerbook is probably the most feasible thing besides the mainstream G4- DDR. The 1 GHz barrier has already been broken by the G4 and all Apple has to do is scale down power consuption. But, I think that the 933 MHz powerbook will be unveiled just before MWNY to mark the end of the powerbook. The powerbook that will be unveiled at MWNY will be 1 GHz like everyone hopes, but it will have some changes.
The changes are:
16.7 in. Active matrix LCD
2 MB L3 cache
Geforce4Go 440 w/ 64 MB
Faster combo drive OR the first ever internal, laptop Superdrive
On- Mobo airport card
Longer lasting battery to accomidate the faster chip
2 Firewire instead of 1
NOTE: This post is pure speculation
The changes are:
16.7 in. Active matrix LCD
2 MB L3 cache
Geforce4Go 440 w/ 64 MB
Faster combo drive OR the first ever internal, laptop Superdrive
On- Mobo airport card
Longer lasting battery to accomidate the faster chip
2 Firewire instead of 1
NOTE: This post is pure speculation
I very much doubt it...but, I would love ot if you were right!
Pleeeeeeease let G5orbust be right, pleeeeease
Sorry, but if you're really expecting that, then you're up in cloud cuckoo land. 16.7" LCD? The 15.2" that we currently have is a large as i would be happy with on a laptop. Any bigger and the size/weight factor makes it..... bulky. As for a MWNY release.... do you mean this year or next?
It's certaintly not going to be happening this year, of that you can be certain.I believe, if I remember an earlier( British) post that we can rule out the Superdrive for the time being. Evidently, short of fitting a " Linford's lunch-pack" to the TiBook, the form of the one is greater than the form of the other (or the many), so..........
Hey man, I never said I had my hopes up for those kind of specs. I already got a computer that works fine. Those specs are for the movie maker on the run who needs lots of screen real estate, a great moblie graphics card and a speedy processor with a heafty battery to give it a lot of juice. And, also, I never said it wouldn't be bulky. Remember, no pain, no gain.
You're certaintly not new to the apple scene, so you should know by now that apple aren't going for ugly designs. In my books, bulky = ugly. Also, remember that the tibooks were updated just recently. With MWNY just a month away, it's too early for such radical changes. We *might* (read: unlikely, but possible) see a minor alteration to the specs, but nothing major.
Oh yes, "no pain, no gain" is correct, but only when comes to the initial cost of purchasing a top-line mac
Eliot~ "Linford's Lunch Pack" would be the correct analogy
Poor guy.....
Yes it would be great, if it were to happen, which I and everyone else really do not think it will
Re: nothing to worry about!
not to mention 1ghz iMacs with Geforce 4's!!Originally posted by Grokgod
If you want a New Ti, well dont worry this is the time, right now.
New York will be all 10.2 and DDR PowerMacs!
Thats plenty to sweat about.
I am lining up my Benjamins right now! All in a row.
So you think that the iMac will get a speed bump to 1 ghz?
What makes you think that?
I don't think that it will happen.
I think that there will be a focus on the powermacs.
What makes you think that?
I don't think that it will happen.
I think that there will be a focus on the powermacs.
i think your powerbook is a predictable jump in specs except for the 16.7 inch screen
but if apple adds to the already amazing screen on tibook, that will definitely be a plus
but if apple adds to the already amazing screen on tibook, that will definitely be a plus