It was just about a year ago that I first reviewed Parallels Desktop. I found it to be a fast and versatile way to run Windows, Linux, and many other systems within OS X. But things are moving quickly in the virtualization arena, and much has changed in the last year. The recent release of Parallels Desktop 3.0 is evidence of that: this first-ever paid upgrade has over 50 new or improved features.
Accelerated Graphics
Parallels 3 now offers support for accelerated graphics (both OpenGL and DirectX), allowing some 3-D games to run within Parallels. This feature is disabled by default, as it's still somewhat experimental, but it can be easily enabled in the virtual machine's preferences. The company provides a list of games known to be compatible, though others may work as well. For instance, I installed and tested Infogrames' BoarderZone, an older PC snowboarding game. I also installed and played a demo of the Live for Speed driving game. Neither is on Parallels' list of tested games, but both worked quite well. However, other games I tested, such as Microsoft's Flight Simulator and Motocross Madness 2, didn't run after installation. But for those games that do work, the results can be good--especially for older games with less stringent graphics requirements. (For more on gaming with Parallels, see Peter Cohen's Game Room blog.)
To test Parallels' gaming abilities, I installed the Prey demo on Mac OS X, Windows XP via Boot Camp, and Windows XP via Parallels on both my 2.66GHz Mac Pro and 2.33GHz MacBook Pro. I then copied a recorded demo file to all of these setups, and I ran a benchmark test using that demo file on each machine.
The Macworld Lab performed a separate test. They tested Doom 3 on a 2.16GHz iMac Core 2 Duo to see how well this graphically intensive game held up when run in Parallels.
As you can see from the chart below, there's a substantial performance hit for running either game under Parallels. The results could be improved, of course, by using a smaller window or lower quality graphics settings. When I was testing Prey's actual gameplay, I found that frames per second (FPS) varied between about 20 and 60 (the latter is where Prey caps it during game play) on the Mac Pro in Parallels. At no time, though, did it feel unplayable. But Prey on the MacBook Pro is another story. To play Prey via Parallels on that machine, both resolution and image quality would have to be reduced to get a usable frame rate.
Doom 3 results on the iMac were similar to Prey on the MacBook Pro--you'd need to reduce the window size and graphic quality settings to get decent gameplay.
If you want the best Windows gaming experience, use Boot Camp to turn your Mac into a real Windows PC. But if your gaming needs are mainly limited to older titles, or if you're willing to play in a somewhat smaller window, Parallels 3 provides a usable solution, at least for some games, without rebooting.
Other Tests
Gaming tests were not the only tests we performed. We attempted some tests with WorldBench 6, but despite numerous attempts, we were unable to come up with conclusive results. Some tests would not completely run; other tests intermittently corrupted our versions of Windows. We are working with our colleagues at PC World to sort out the problems we've encountered with World Bench tests and hope to post results soon.
It should be noted that we didn't run into any issues running applications on their own--Microsoft Office, the Prey demo, and various other Windows applications ran as expected.
All tests were run at 1,024 by 768 resolution. Prey tests ran in a window, with medium texture quality, highest shader detail, no anti-aliasing or vertical sync, and image anisotropy at 8x. All other settings in the Advanced 1 and Advanced 2 video configuration tabs were set to Yes. Figures are frames per second as reported by Prey. Doom 3 was set to use high video setting, 1,024 by 768 resolution, V-sync No, Antialiasing Off, and all other settings set to Yes. All systems were running Mac OS X 10.4.9. The MacBook Pro had 2GB RAM and an ATI Radeon X1600 graphics card, and the Mac Pro had 4GB RAM and an ATI Radeon X1900 XT graphics card. The iMac had 2GB RAM and an ATI Radeon X1600 graphics card.--Macworld Lab testing by Rob Griffiths and James Galbraith.
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