Upgrading a 1GHz Apple eMac: The Plan

The eMac is the big white CRT all-in-one Apple sold mostly to schools, and it's heavier than it looks. Mine is the 1GHz PowerPC G4 model. It runs, but it's running on whatever it shipped with, and I wrote out a plan to make it a machine I'd actually want to sit in front of.

This is that plan. I haven't done all of it yet, and the phases are in the order I'd spend money, not the order that sounds most exciting.

Where it starts

What I'm working with, as best I can tell without cracking it open:

Part	Stock
CPU	PowerPC G4, 1GHz
RAM	Base amount, likely 256MB
Hard drive	Stock IDE, 40GB or 60GB
Optical	Combo drive or SuperDrive
OS	Mac OS X 10.3 or 10.4

Nothing in there is broken. It's just slow in the ways old Macs are slow: not enough memory and a tired spinning drive.

The plan, phase by phase

Phase	What	Why
1. Memory	Two 512MB PC2700 DDR333 modules, for 1GB	1GB is the maximum this model supports. Smoother OS, real multitasking
2. Storage	128GB SSD on an IDE adapter, or a 500GB 7200RPM IDE drive	Faster boots, a lot more room
3. Optical	A SuperDrive or compatible DVD-RW, only if needed	DVD burning
4. Thermals	Clean the heatsink and fan, new paste, new thermal pads	Cooler and quieter
5. OS	Fresh install of Mac OS X 10.4 Tiger	A clean start on the upgraded hardware
6. Optional	External FireWire drive for backup, USB 2.0 PCI card, speakers, Wi-Fi card	Only the ones it turns out to need

When I wrote it up, the whole thing came to somewhere around $110 to $180 depending on options, mostly used parts off eBay. That was at the time. Old Mac parts drift up and down, so I'd check before trusting that number.

RAM is the no-brainer. It's cheap, it's the biggest felt difference on OS X, and it's also what makes the later OS choice possible.

The storage choice is the open question. An SSD on an IDE adapter is the fun option, and the silence is lovely. A plain 500GB IDE drive is simpler and there's nothing to go wrong with an adapter. Either one beats the original drive.

Tip

Do the thermal cleanup whenever the case is open for the RAM or the drive. You're already in there, and twenty years of dust doesn't help anything.

Tiger, Leopard, and the OS 9 question

The plan says Tiger, with Leopard as an option once the RAM is maxed. Leopard does run on a 1GHz G4. But there's a catch I'd want to settle before picking.

Leopard dropped the Classic environment. Classic is how OS X runs OS 9 applications, and Tiger still has it. My plan also mentions dual-booting OS 9 for classic games. As far as I know, the 1GHz eMac is one of the Macs from 2003 onward that can't boot OS 9 natively at all, so Classic under Tiger is the realistic way to get at OS 9 software on this machine. That tips me toward Tiger.

Heads up

Check your exact eMac model before you plan around booting OS 9. The early eMacs could, the later ones can't, and it's an annoying thing to find out after you've partitioned a drive for it.

If you're collecting old install discs and software for a machine like this, I wrote up how I name and file a classic Mac archive, and how to make an HFS+ USB drive from Windows for getting files across.

What it should be good for

If the plan comes together, this is the target:

• Classic Mac gaming
• Basic web browsing with TenFourFox, which is no longer developed but still the best option I know of on PowerPC
• Office work in AppleWorks or Office 2004
• Media playback
• OS 9 software, through Classic
• Light content creation

Nobody needs a PowerPC Mac in 2026. That's sort of the point.

What's next

Phase 1 first: find two matching 512MB PC2700 sticks and see how much of the sluggishness goes away with the memory alone. Then I'll decide on the drive. I'll update this when there's more to report than a plan.

It's one of a few old machines on the bench right now. The others are a Dell Optiplex GX280 becoming an XP gaming box and a Precision T7500 workstation getting a storage overhaul.