You are quite right that expandable tower computers have significant advantages over iMacs when it comes to adding certain types of extra features. As I originally mentioned, gamers who need to upgrade video cards each year in particular will be better served with an expandable desktop. Likewise users who enjoy building their own computers need not apply.

However, what you need to consider is that All-in-Ones are like laptops which also have limited upgrade potential compared to a tower, but are still a very valid (and now actually more popular) form factor for many users – many people don’t mind the lack of upgradability as it is off-set by other advantages.

As I stated, your typical corporate desktop user who only needs email, web browsing, and Office apps is still very well served by an all-in-one. Corporate users in particular swap out their PCs on a 2-3 year lease cycle – no one on our campus upgrades their computers, they just get new ones every couple of years. Maybe not the greenest option, but it is the reality in the corporate world. A classic case for the small footprint, no cable-clutter, quiet, everything built-in “slab”.

Even many home users who again only need the computer for email, web browsing, Office apps, music, photo and home video editing are likely candidates. Being able to upgrade RAM, the hard disk and add new peripherals using USB 2.0 and Firewire means they still provide reasonable upgradability and often by the time a bigger screen is desired, the CPU, bus and motherboard are all too slow and need replacing anyway. (of course all iMacs since the 17” G4 iMac support monitor spanning so even new, bigger screens are possible with iMacs).

Also, not everyone has a tame geek to build computers for them – many of the non-geek home users I know have never upgraded an internal component (often not even RAM) in their desktop PC. They just buy new external drives and peripherals and eventually buy a completely new computer when the old becomes too slow even for them.

As always, it is horses for courses. Just because a “slab” iMac or Dell is not the best choice for many people does not mean it is not an valid choice for other demographics.

All of this said, I do believe Apple is missing out not having a small cheap modular desktop in between the Mac Mini and the Mac Pro. With one or two AGP/PCI slots and one or two 3.5” HD bays it could fit the bill for many gamers and users who want to be able to upgrade video cards/optical drives and maybe add an extra PCI card for new internal functionality but don’t need the huge tower case of the Mac Pro. Again, not something everyone would need or want, but it would plug a gap in their line-up.

-Mart

my third point regarding the slab PCs is this: I am most wary of this disposable culture we collectively seem to have been building up since the 1990′s.

Slab PCs can be upgraded so when you need a new feature — like my father and friend did — you’d have to chuck them out. If millions of people had to replace their slabs every 2 years, imagine the toxic mountain that builds up over a decade.

On the other hand, a real desktop — on which Apple’s reputation for longevity really rested — could conceivably stretch for 5 years. So in a decade, you would have changed slab PCs 5x, as opposed to 2x for desktops.

firstly, I have to say that as a Mac fan we are aberrations in that we are able to accept that Macs — and Apple — have faults. A cursory visit to Mac help forums will show that this is not the norm: try and mention having problems with your Mac and you will get probably 10 people saying they have no problems whatsoever with theirs. How uselessly nice to know.

Now on to my Example #2:

When I bought my Power Mac in 2002, a friend of mine who also does the same thing as me (ie, freelance for an ad agency) bought a G4 “Sunflower” iMac instead because he liked the space-saving design.

5 years on, I am still working on my much-upgraded Power Mac. He, on the other hand, is already on his third iMac.

Again, when you need a new technology feature as your capabilities and needs grow, a slab has nothing on a real desktop computer. Because my Power Mac is a real desktop, I have been able to fit in the following over the years as they became available: SATA, Wireless G, USB2.0, Firewire 800. I am able to have internal RAID, and I recently upgraded to a Superdrive because my work now demands it.

Of course you can have external drives attached to the iMac. But:
1. Apart from also adding more RAM, that’s about it.
2. Having peripherals with cables strewn all over (the iMac doesn’t even have something as basic as a card reader, for heaven’s sake) quickly puts the Elegant Design philosophy of Apple in the garbage can.

Why did my friend need 3 iMacs? Well, first, he realised he needed a bigger screen — the Sunflower iMac had a 15-inch screen and couldn’t do monitor spanning. So he got a G5 iMac. Then, unexpectedly as freelance work often is, he started getting more video editing work; he needed (1) Firewire 800 and (2) a Superdrive, neither of which was on the G5 iMac he’d bought.

So he got a 24-inch Core 2 Duo iMac recently. And the screen is starting to have problems. Check the Mac help sites and you’ll see that this is a rather common problem to new iMacs and MacBooks. But the brilliant thing about this problem is: according to Apple and the “helpful” Mac fans, it doesn’t exist.

Because, you see, their iMacs and MacBooks are doing just fine. Where got problem?

Anyway, all of this is just to say, if you need a desktop computer, get a real desktop computer. If you’re thinking of getting a slab, I concur with Rich’s suggestion: you might as well just get a notebook computer. It has an even smaller footprint, uses even less power, is just as non-upgradable, AND it can be carried around.

setting aside the heat issue and coming back to Rich’s original premise on why slab PCs suck, I’d like to illustrate why agree with him with two examples.

Example #1:
4 years ago I built a PC with a 1.3GHz Celeron, 256MB RAM and 15GB hard disk (yes, they used to exist… ha ha). I gave this computer to my father. Over the years he outgrew it and found it too slow for what he wanted to do.

The first time he mentioned it, I upgraded the RAM to 512MB. The second time, I replaced the hard disk with a speedier, roomier new one. So far, both things can be done with the iMac.

Here’s where a real desktop system shows its value over a slab: he began dabbling in multimedia, making little video clips on his new grandchild (my niece). I upgraded the RAM again, to 1GB, and put in a Firewire card. Later, I changed the video card. I put in a wireless G card. Just last month, I bought him a 19-inch LCD monitor to replace the old 17″ CRT as a present.

4 years on, and he’s still he’s still happily using the Celeron PC as a result. When it comes to keeping abreast with the latest technologies, a real desktop beats a slab hands down.

By the way, the Celeron PC is in a Mini ATX box. It has a 200-watt power supply, and if you stand it sideways, it’s footprint with the 19″ monitor standing in front of it is as wide as the 20-inch iMac, and just slightly thicker. But while the iMac will probably need to be replaced in 2 years when some new technology you need that you didn’t before comes along, the Celeron PC probably has another 2 years in it, making it last 6-7 years total.

it’s quite simple, really. If heat is not an issue in computer design, then:

1. Why is the Mac Pro as big as it is instead of, say, two-thirds smaller?
2. Why didn’t Apple manage to come out with a dual-core G5 iMac?
3. Why wasn’t there a G5 notebook?

For #3, the answer “Because IBM didn’t want to design a portable G5 chip for them” doesn’t really cover it. There was a period, just before the Pentium M came out, when PC makers were coming out with notebooks that had a real desktop Pentium 4 chip inside. So using a desktop chip inside a notebook can be done. Apple just didn’t want to give up its style over function philosophy.

Yes, we’ve had bad batches of computers of ALL makes at times as well – a whole lab of eMacs had to go back with the dead screen issue and we’ve had every single Acer desktop of a particular model have its hard disk die all within the same month (now that one was a REAL doozy as we had hundreds of the beggars). I also had the hinges on my old Titanium PowerBook break (though accidentally letting it fly off the seat next to me as our plane landed was probably not conducive to long life!) and lots of other issues with both our Macs and PCs.

I reiterate, I am not saying Macs are infallible – what I am saying is that no argument in this thread so far has definitively demonstrated that laptop component quality or frailty rather than rough handling is the reason laptops die sooner than desktops. Of course hard disks fail more often in laptops – what do you think happens to that poor head when you drop your laptop even just a centimetre onto a desk in the middle of writing some data? Even auto-parking heads aren’t going to be able save you if you sharply knock the side of the laptop.

As far as the cooling issue in cramped confines is concerned, that indeed might conceivably be a problem. However, have you actually looked at the elegantly designed cooling paths in the flat screen iMacs? Unlike the empty box of a tower which needs big fans to move enough air volume to properly cool every part, the iMac has very distinct cooling channels flowing over every critical component to make sure the cool air from the fans goes exactly where it needs to. We have quite a few older generation “slab” iMacs as well as the latest Aluminium iMacs and I have been very impressed at the ability of my 2.8GHz Core 2 Duo 24” Aluminium iMac to max out both cores doing video compression jobs without needing to rev the fans up to audible levels or have the core temperatures show any sign of over-heating.

-Mart

Yeah, I know I use “Mactard” and you’re right, I shouldn’t use it. But I can’t resist because it so accurately describes a fanatical Mac user in a single made-up word. Guilty. (Raises hand.)

I’m certainly not the first one to use it and if there were made-up words as good as Mactard for Windows and/or Linux fanboys (because I don’t care too much for them either) I’d use them in a second for equal insult-o-rama across OSes and platforms. Some Mactards use “winblows” but it just doesn’t have the same punch.

And I just can’t play it PC (as in “politically correct”) all the time. Makes for a boring read. This is why I like videos like New Media Douche Bags in Plain English. Good stuff. Watch that.

1. Desktops: 333Mhz G3, 800Mhz G4, 1.8GHz Dual G5, and 5 Windows PCs — fatality: one.
(The G5 had mainboard problems, got stuck to-and-fro-ing for 6 months without a resolution, so in the end I told the Mac dealer to reimburse me and I bought 2 Windows PCs instead). Of the 5 Windows boxes I have self-built, 2 are still being used (by my admin staff and my father respectively), the other 3 were donated to charity.

2. Laptops: 266Mhz Wallstreet, 333Mhz Lombard, 400MHz Pismo, 400MHz TiBook, 466Mhz iBook SE, 500Mhz iBook, 1.2Ghz iBook, 1.33Ghz Powerbook — fatality: six.
(Except for the Pismo and iBook SE, all the others had hard disk issues or outright failures within 2 years, the TiBook hard disk hard crashed two times, making me lose all my data both times // the Lombard, TiBook, iBooks 500Mhz and 1.2Ghz had mainboard problems, the Lombard and 500Mhz iBook eventually died completely within 3 years // the Wallstreet and Lombard broke their hinges within 2 years // the Wallstreet, Lombard and 1.2Ghz iBook developed video problems within 3 years).

3. iMacs: 3 agencies I work for bought a total of 7; 4 had “issues”.
Agency A: 3 iMacs, 2 had to be returned within 2 months, one was never resolved and was replaced by a new one, which also had screen and motherboard problems. In the end the agency got pissed off and got a Power Mac instead.
Agency B: 2 iMacs, one had screen problems out of the box.
Agency C: 1 iMac, developed screen problems within 6 months, got fixed temporarily before conking out altogether a couple of weeks out of warranty.

Conclusion:
yes, using laptop components in a “desktop replacement” machine sucks.

How about the best arbritrator? Where people put their money down – eBay. Since you know Pc’s so well – look up any two-year PC and look at the prices versus new … now do it for any Mac INCLUDING laptops and you’ll see the HUGE difference in retained value. THAT IS THE DIFFERENCE just like a 2-year BMW will retain more of its value than a 2-year old Suzuki even though both are cars.

Only until you spend two years with Macs then are you qualified to judge.

For instance as a PC maven you will find it impossible to believe but after 7 years of OSX, we have exactly ZERO viruses, zero malware and zero trojans (outside of MACAfee & Symantec labs) and with EVERY OS upgrade which can be applied to every machine since 2001, every OS upgrade actually makes an older machine run faster & BETTER … on the PC side, you will find it hard to believe if not impossible that you can run an ENTIRE SYSTEM OS UPGRADE without having to wipe the drive – and after 30-45 minutes, you’re set. I’m sure to you this sounds like commuting by a UFO but it’s true – that’s why you can’t just look at some Macs and say you know Macs. It’s not about looks or design which it has but about useability and value. That’s why we use Macs.