Vista DreamScene PerformanceMikey 15 comments
Microsoft quietly launched the Vista DreamScene preview today with mixed reports about the hit on both CPU and GPU.
I also tested the video performance with a 1080i video on the desktop. The following images show the average CPU usage during each.
DreamScene with default Vista video at 44%
DreamScape Sylock at 47%
DreamScape Plasma at 50%
DreamScene 1080i mpg vide0 at 82%
Although these readings are high for an application that is supposed to place all the burden on the GPU, I did not notice a significant performance hit while preparing this article and while using Photoshop and Firefox (with the 1080i video running).
Using the Vista windows flip (Windows and Tab keys) I noticed that only the video content was still moving, while the others simply remaining static.
I should also mention that my GPU temperature did actually rise 3 degrees, my average temperature normally around 58.
While it's pretty sweet to have the high definition shuttle launch on the desktop, the reality is most of us run our apps full screen so we wouldn't experience the 'Dreams' while we worked.
This is a preview release, and the final may even address some of the CPU spiking.
For those interested, my modest PC specs: AMD Athlon 64 3700, 2gb DDR400, Geforce 7900GT using the unofficial drivers from Guru3d.com, 22" Viewsonic LCD @ 1680 x 1250.