by Eric W. Schwartz
from the AmiTech Gazette, September 2013
Now that I have a new high-point machine in the Powermac G5 running MorphOS, I thought I would run a handful of tests comparing speed and the time it takes to do the same Amiga software task between systems. This is by no means a clinical scientific investigation, as there are several variables that were not weeded out. It's just a guy with a stopwatch app and some curiosity.
- First off is the veteran, the Amiga 4000T, with a 50 Mhz 68060 CPU, running Amiga OS 3.9
- Next is the Pegasos II, with 1 Ghz PPC G4, running MorphOS 3.2
- Next is the Mac Powerbook, with 1.66 Ghz G4, also running Morph 3.2
- Finally is the new kid on the block, the Powermac G5 2.3 Ghz, running Morph 3.2
First test was the one that means the least unless you run Windows -- boot time (defined here as the time from when the power switch is hit to when the desktop is fully up.)
|2nd:||Powermac G5||38.4 seconds|
|3rd:||Amiga 4000T||41.5 seconds|
Apparently the G5 has more hardware checks on boot. The Pegasos' time was inflated, as I have a wait delay on boot that I neglected to skip, which might have reduced the time up to ten more seconds, but the Amiga can't lose them all in this competition.
Test #2: Photogenics, maximum gaussian blur operation on 2560x1920x24 image
|1st:||Powermac G5||22.9 sec.|
|4th:||Amiga||20 min. 7 sec.|
Here the CPU power becomes most apparent, though the G5 is not quite the runaway leader as I might have expected.
Test #3: ImageFX, Oil Paint effect on 1280x 1280 image, brush size 5
|2nd:||Powermac G5||22.6 sec.|
|4th:||Amiga||3 min, 34.5 sec.|
Stunning upset as the G4 Powerbook beats the G5. I ran it twice to make sure I didn't mess up on the stopwatch. I may have also make a settings mistake on the Amiga, but that only helped its time.
Test #4: Lightwave 3D 5, 2010 Xmas card render, 1280x960, full ray tracing
|1st:||Powerbook||failed, ran for over an hour, power plug knocked loose, battery expended.|
|2nd:||Amiga||cancelled because I didn't want to wait around|
|3rd:||Pegasos||cancelled because I didn't want to wait for it.|
|4th:||Powermac G5||failed, did not finish before MorphOS demo time limit was reached.|
Well, that one was kind of a cluster-fudge.
Test #4b: Lightwave 3D 5, 2010 Xmas card render, 640x480, ray traced shadows only
|1st:||Powermac G5||25 min, 40 sec.|
|2nd:||Powerbook||27 min, 21 sec.|
|3rd:||Pegasos||44 min, 59 sec.|
|4th:||Amiga||8 hours, 35 min, 52 sec.|
Even with the reduced specs, the G5 barely squeaked through within its demo time. This was a much more demanding render than I first imagined.
Test #5: Lightwave 3D 5, Metrobot render, 1280x960, full ray tracing
|1st:||Powermac G5||3 min, 50 sec.|
|2nd:||Powerbook||4 min, 10 sec.|
|3rd:||Pegasos||6 min, 48 sec.|
|4th:||Amiga||1 hour, 12 min, 9 sec.|
This was a much easier render overall (less complex surfaces and transparency). Still, it shows that in most things where CPU speed is a primary factor, the G5 is usually the winner, with the G4-based Powerbook not far behind. Every bit of extra speed is useful for intensive tasks though, and the Macs outpace the Pegasos II, and not surprisingly, the Amiga, though not by factors that mere clock speeds might have you believe.