Performance Impressions

The performance of the Mac mini in its standard form is unacceptable, even for a $499 machine.  At first, I was afraid that the poor performance was due to the 1.25GHz G4. However, upon further investigation, the root of the cause revealed itself - 256MB of memory is simply not enough for OS X.  When running one application, such as Safari or Mail, the 256MB of memory is enough, but as soon as you open more than one application, the memory quickly disappears.  The problem with disk swapping on the mini is that it is using a 2.5" hard drive, which is significantly slower than a desktop hard drive. So, overall performance is reduced significantly.  There's a ton of stuttering when multitasking (not even heavy multitasking) and it's completely caused by disk swapping. 

Upgrading the system to 512MB of memory fixes all of the problems. You'd be hard pressed to get close to 100% CPU utilization on even the low end 1.25GHz G4 without resorting to video encoding, and most importantly, the system is as smooth as can be with 512MB.  As I mentioned in the first Mac article, OS X's caching algorithms work wonders for perceived system performance, since there's very little disk swapping, but in order for the OS to do its thing, you need a certain minimum level of memory and that seems to be 512MB.  Apple offers a 512MB upgrade for the mini for $70, which is slightly cheaper than what a DDR333/400 stick would cost you aftermarket, and it is an absolute must-have for this system.  Working on a simple file, ftp or web server with no end user interaction in the OS, you can get by with a 256MB configuration, and the same goes for a single user, single application usage environment, but as soon as there's any element of multitasking at play, you need 512MB - any less doesn't do the system justice. 

Honestly, the first time that I used the mini, I was quite frustrated with it, simply because there was just too much disk swapping going on.  But after the 512MB upgrade, I was more than happy from a performance perspective.  The 5400RPM drive in the system is actually fairly snappy (when not being swapped to) and application start times are pretty reasonable as well.  There's a clear difference between the mini and Apple's PowerMac G5s, but despite the difference, the mini offers a pretty good level of performance, if it is configured with 512MB of memory. 

Apple should not be allowed to sell any system with OS X with less than 512MB of memory; and you shouldn't buy the mini with less than 512MB of memory. It's as simple as that.

The performance of the 1.25GHz G4 is surprisingly good. I was expecting to notice a big difference between it and the 1.5GHz G4 in the 15" PowerBook reviewed yesterday, but the difference isn't that big in most applications.  The one area where the G4 definitely lags behind, though, is in video encoding.  Importing any video into iMovie HD frankly takes too long for the mini to be used often as a video editing box. Granted, the 2.5" hard drive should be an indication of that alone, but even with an external FireWire drive, the CPU does hold you back significantly.  Performance throughout the remaining iLife '05 applications is pretty solid, and even iMovie HD, as an application runs wonderfully on the 1.25GHz G4. It's just importing movies that can take a pretty long time, especially for longer clips.  Low video encoding performance may burst the mini HTPC bubble, which has been brewing in many minds since Apple's announcement, but it will work just fine as a media server - just not as a PVR (not without hardware accelerated encoding). 

Despite what I had originally expected, the on-board Radeon 9200 is a bit of a performance limitation.  I had the Mac mini hooked up to a 23" Cinema Display running its native resolution of 1920 x 1200 and was wondering why Exposé and a handful of other animations were choppy. After tinkering with resolutions, I found out why.  At resolutions above 1280 x 960, the Radeon 9200's 32MB of local frame buffer isn't enough to handle Exposé of even just four windows - swapping to main memory, and thus reducing the smoothness of the Exposé effects.  At 1024 x 768, it's great and it's even fine at 1280 x 960, but once you start going above and beyond that, you start running out of video memory real quickly.  I am concerned about performance under OS X Tiger, simply because with more being stored in video memory (e.g. font caches), you'll run out of video memory even quicker.  Granted, what I'm discussing right now isn't a reduction in actual performance, but rather a reduction in the smoothness of animations - which to a first-time OS X user can be a huge turn off.

The other thing to keep in mind is that the Radeon 9200 interfaces to the North Bridge using AGP 4X, not AGP 8X.  All windows in OS X 10.3.x are treated as AGP textures, and thus, AGP texturing performance is also important to UI performance.

As I mentioned earlier, the Mac mini features a single DVI output, but ships with a VGA adapter as well.  The analog VGA output quality of the mini is actually pretty impressive, with no issues at 1600 x 1200 over the VGA adapter.  It looks like Apple paid attention to all aspects of performance with the mini, including those that are sometimes overlooked, such as analog video output quality. 

In normal application launches and application usage (with 512MB of memory), the hard drive is surprisingly fast. However, when it comes to application installs, especially larger applications like iLife '05, install times are extremely long.  On a desktop PowerMac G5 iLife '05, a 4GB application suite takes a decent amount of time, but on the mini, iLife '05 takes forever to install.  Even the smaller 800MB iWork '05 installation takes forever (but less than the previous forever) to install.  Luckily, these are the types of things that you only have to do once, but doing any sort of intensive file copying to the mini's 2.5" hard drive can be frustrating (e.g. installing all 4GB of iLife '05). 

Sound Impressions and Hardware Surprises Stability and Out-of-Box Software Completeness
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  • ehanneken - Tuesday, January 25, 2005 - link

    I got my Mac Mini yesterday. It came with iLife on a DVD *and* preinstalled.

    gibhunter, the upgrade to 512 MB is a $75 option when ordering the Mini; the owner is not required to do it himself. The only other expenses I had were taxes and a $13 USB adapter for my old PS/2 keyboard and mouse. I already had a spare 17" monitor. Altogether, I spent about $630.

    I may buy a cheap new keyboard, though. My old keyboard doesn't have a Windows key, and I think OS X maps the Apple key to it.
  • deathwalker - Tuesday, January 25, 2005 - link

    #12..I'm in your corner. If you can see through the fog of the $499 price tag then you are really looking at a $900-$1000 "Pig" thanks!~!
  • ianwhthse - Tuesday, January 25, 2005 - link

    #4, downtowncb

    They might not know the speed of the hard drive, true, but they're definitely going to notice it's slow.

    I think you underestimate the average user's ability to notice that their computer is running like a pig. Why deal with a spyware infested Windows machine when you can switch to a Mac and get a system that's barely faster than said infested machine because Apple decided you needed a slow HDD, and pathetic amounts of ram?

    Anand commented about how the 256 MB of ram was insufficient, but do you think most people are going to magically know that they need to double the ram to get a good experience? (Assuming "most people" aren't Anandtech readers).

    Anyway, I'm done with that rant.

    Anand, are you going to look more closely at the iMovie, Garageband, iDVD trifecta? I currently use the Adobe Video Collection Professional (Premier, After Effects, Encore DVD, Audition, and Photoshop). I’m just looking for something that can make something nice for the smaller projects I end up working on. So those applications are interesting (plus the fact that you can buy the Adobe collection on Mac would allow me to make a complete move off the PC). Well except for gaming. But all I play on my PC now is KOTOR, so I won’t cry too hard.

    (I can also get a Mac version of Seti@home, how ‘bout that?)
  • Avalon - Tuesday, January 25, 2005 - link

    #13, most people do NOT have $300 flat screens and USB keyboards/mice just simply laying around. Take this for what it is: the cheapest way to use OS X.
  • hopejr - Tuesday, January 25, 2005 - link

    #11, I have a 1GHz iBook G4 and it's good for audio editing with Garageband. I'm sure the Mac Mini will be better

    #12, many ppl already have those things laying around (apart from the RAM).

    Good article!!
  • gibhunter - Tuesday, January 25, 2005 - link

    You're all forgetting the fine print.
    First, a Mac mini is crap with 256MB of RAM. Gotta buy the more powerful Mac. Do they offer them with 512? If not, suddenly the average Joe needs to learn how to upgrade. Suddenly it's $600.
    Gotta get a keyboard and a mouse. Only USB ports are available though so they will be pricey. $700.
    Gotta get a monitor. A stylish PC absolutely requires a stylish flat panel. $300.

    Suddenly you have a very weak personal computer for a thousand bucks. What a bargain! (sarcasm)
  • ksherman - Tuesday, January 25, 2005 - link

    hey Anand, do you think this little box would be any good at Audio Editing? My lil bro is starting to get pretty heavy into it and REALLY wants a Mac, and this mini seems like it may be in his price range.
  • downtowncb - Tuesday, January 25, 2005 - link

    I know a few techie friends who have always been PC users that are purchasing Mac minis because they are a cheap way to get familiar with OSX while getting to work with BSD. Also the built-in Apache server is good for them (and can be activated by a single click). I'd say there are at least 2 crowds buying minis, the techie "I just want to try it out and it's 25% the cost of my last system" crowd and the $499 "I always buy the cheapest thing" crowd. You're right, the normal arguments don't apply because in the first case the arguments are overlooked in favor of software and OS and in the second they've never even heard our arguments (to them RPM is how fast your engine is going).
  • bob661 - Tuesday, January 25, 2005 - link

    Itunes isn't preinstalled. It's part of the iLife package.
  • jfpilon - Tuesday, January 25, 2005 - link

    About the office compability: why not just use

    check it out:

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