Yesterday we looked at the value of the
beige G3, concluded that it was a nice old computer at a very
attractive price, and concluded that the blue & white G3 was the better
value.
Today we're going to look more closely at the b&w G3,
introduced in January 1999, and explain why we think it justifies
the extra expense compared to the beige G3.
The Pros
As surprised as I was to see used beige G3s selling for US$200
recently, imagine my surprise to see the b&w G3 selling for as
little as $100 more when compiling our Power Mac G3 Price Tracker. 
Okay, that was an exceptional deal, and $350
is more typical - but we even had a b&w G3 system with a 16"
display listed in the local newspaper classified ads for $350 over
the weekend.
That's a lot of computer for the money. In comparison to the
typical $200 beige G3/266 desktop with 128 or 256 MB RAM, a
4 GB hard drive, and a 24x CD-ROM, the b&w starts at 300
MHz with 64-256 MB RAM, a 6 GB hard drive, and a CD-ROM.
But is that worth $100-150 more?
I think so. The b&w G3 has a 100 MHz system bus, which means
it can access memory that much faster than the beige G3 with its 66
MHz bus. This is especially useful as you upgrade to faster
processors. And there are lots of G3 and G4 upgrades available for
it.
The b&w G3 also has a 33 MB/sec. IDE bus, twice as fast as
the one on the beige G3. The IDE bus on the beige G3 is one of its
greatest drawbacks. At twice the speed, the Ultra33 bus on the
b&w G3 will only occasionally be a bottleneck for today's fast
drives. Unless you need really, really fast drive access, you'll
probably find Ultra33 comfortable - and a huge improvement over the
beige G3. To add a faster IDE card to the beige G3 costs about
$60.
The b&w G3 has better video than the beige G3, although
again it's not quite as nice as that on newer Power Macs. One
really nice feature on the b&w G3 is a 66 MHz PCI slot for the
video card; this is twice the speed of the PCI slots in the beige
G3. (The ATI Rage 128 from the b&w G3 is a popular video
upgrade for beige G3 owners.)
The b&w G3 has four PCI slots, one more than the beige G3,
although one of them will be used by a video card. Still, if you're
going to put a video card in the beige G3, this leaves the b&w
with one more slot for options.
That's important, because although the b&w G3 won't need a
USB and/or FireWire card (this was Apple's first model to offer
both), you might want to use one for a SCSI card if you have old
SCSI drives, scanners, etc. that you want to use with the b&w
G3.
The b&w G3 was also the last desktop Mac to ship with an ADB
port, making it easy to replace the limited iMac keyboard and
abysmal round mouse that came with the computer.
Memory expansion was also improved over the beige G3, which was
limited to 768 MB of RAM. The b&w G3 supports 1 GB of
memory, which can be a real plus when working with video, huge
Photoshop files, or OS X.
The b&w was often ordered from the factory with a Zip 100
drive installed.
The CD-ROM drive is a standard sized IDE device, making it quick
and easy to swap it out for a CD-RW drive, DVD-ROM, etc. Accelerate Your Mac!
maintains a huge database of reader reports on which drives are
compatible.
The b&w G3 supports every Mac OS from 8.5 (we recommend the
free 8.6 update) through today's 10.2.4.
And that wonderful drawbridge case design makes working inside
the b&w G3 a pleasure. It's much easier to route cables inside
here than it is in the beige G3 desktop. (I've never worked with a
beige G3 minitower, so I can't speak to that design.)
The Cons
Compared with earlier Macs, there is no SCSI in the standard
b&w G3 configuration, although Apple offered it as an option.
Nor are there Apple serial ports for StyleWriters, external modems,
etc.
If the Ultra33 bus isn't fast enough, you can add a third-party
Ultra66 or Ultra100 card, although I think most users will be happy
with performance of the standard bus on the b&w G3.
Video performance is very nice under the classic Mac OS and very
adequate under Mac OS X. You can improve this by adding a
third-party PCI video card (the Radeon Mac Edition is a favorite).
Although it will never match Quartz Extreme on the AGP Power Macs,
you can have decent video performance under Mac OS X.
Of course, there is no internal floppy. Not that most people use
them any longer, but this was the first Power Mac without one.
A Best Buy?
The question: Should we rate the b&w G3 as a Low End Mac Best Buy? Put the other
way, is there any reason not to?
With prices as low as $300, I can't see any reason not to. There
are no significant drawbacks. In every respect the blue & white
G3 is a modern Power Mac. It has USB and FireWire. It supports a
gig of RAM. It has a fast enough IDE bus - and plenty of PCI slots
if you need to add a faster drive controller.
From a legacy perspective, the b&w has ADB for keyboards,
mice, and sketch tablets. You can add a SCSI card if you need one,
and you can often find used b&w G3s with Apple's card already
installed. And if you need an old fashioned Apple serial port,
Griffin's
$49 gPort should do the job.
In comparison to the beige G3, the b&w offers many features
that would be additional expenses - USB, FireWire, better video, a
faster IDE bus - and offers some things the beige G3 doesn't - a
100 MHz system bus, 4 PCI slots, and no 8 GB partition problem
with OS X.
At today's prices, the b&w G3 definitely qualifies as a best
buy. 
