DreamScene gets mixed reception
CPU use, a tale of two video cards..
Saturday, February 17, 2007 by Frogboy | Discussion: WinCustomize News
Windows DreamScene is Microsoft's animated wallpaper program that's currently in "preview" (beta) for users of Windows Vista Ultimate. So far, reactions have been mixed.
While users seem to love the concept, the amount of CPU used to do it seems to vary wildly. From 12% or so on my ThinkPad T60 to nearly 50% on systems that are much faster.
The difference? So far, it basically can be thrown to the feet of nVidia. Their drivers, which not only seem to crash PC games do double-duty in being very inefficient with DreamScene.
Below are the results on my laptop. Note the very low (as in not great) performance rating and yet its relatively low CPU use while running a DreamScene. It has an ATI card.
Lest someone thinks I have it out for nVidia, my primray machine has two nVidia 7950s in it. I just wish nVidia would take its drivers more seriously. They were crummy on Windows XP. Some may recall how you'd see reports about how WindowBlinds or WindowFX "slowed my machine to a crawl" and called our software bloated not realizing that no, our stuff runs great if the drivers are decent (like the ATI ones or the occasional nVidia one).
Now, Microsoft is getting a taste of what we've gone through. Maybe this time, nVidia will be motivated to worry about desktop drivers rather than trying to show they can get an extra frame per sec in a first person shooter.
Still, if you have a good machine, nVidia or ATI, the CPU use isn't a big deal in actual use, especially if the .DREAM file's content is in MPEG and not WMV (WMV is more CPU intensive). And hopefully soon nVidia's drivers will get better. Because I want to get an Geforce 8800 but am not going to get one until they fix this stuff.
Reply #2 Saturday, February 17, 2007 3:31 PM
It seems pretty clear to me that unless you find a more streamlined player to do the work, you're always going to have this problem. Having a pop at nVidia's drivers is all well and good, but some people turn their computers on to use, not to look at.
Reply #3 Saturday, February 17, 2007 3:51 PM
As a part time pc repairman,my experience with video cards and drivers has been terrible with all ATI all in wonders ...yet I've had no problems with nVidia.(I dont game much,so I dont really push them that hard)
I'm dealing with older cards tho so I cant say much about the newer stuff.My nVidia 6100(onboard) runs WB,OD,5 widgets,WinFX quite zippily.
Reply #4 Saturday, February 17, 2007 4:06 PM
With the popularity and widespread use of nVidia drivers, I am confused as to why this is a realization of an issue now. Certainly, MS and Stardock tested these programs prior to the release even of the beta version and I can not image tests that would not include nVidia drivers.
Reply #5 Saturday, February 17, 2007 4:14 PM

Reply #6 Saturday, February 17, 2007 4:27 PM
Is this really necessary?
Reply #7 Saturday, February 17, 2007 4:47 PM
I know this will embarass Nvidia owners, but I am still using an X800XL ATI card and the Dreamscenes play flawlessly. Not knocking Nvidia...my plan is that on my next setup I'll have two 8800's in SLI (if Nvidia will get the Vista/SLI issues worked out). I think Nvidia is in some kind of time displacement....
Reply #8 Saturday, February 17, 2007 4:48 PM
Reply #9 Saturday, February 17, 2007 4:58 PM
Reply #10 Saturday, February 17, 2007 5:47 PM
Anyway, back on topic here. I don't see how people are having problems. I run a 7900GTO with 100.64 and my average CPU usage is around 18% with the exact same wallpaper seen above.
Heres a pic: http://img407.imageshack.us/img407/2410/deskoc0.jpg
I suggest you all try 100.64, they are by far the best so far. Desktoping on these drivers is perfected. Its gaming that needs the work, and yes I have ran numerious benchmarks. Even though HL2 gets 156FPS with no anit-aliasing and 8x ansio in XP i get atleast 20FPS more. And yes, that is quite the hit.
Reply #11 Saturday, February 17, 2007 6:43 PM
I have 3 laptops, one HP nc8430 Core Duo 2ghz with 2gigs of memory and an ATI x1600 with 256megs and 1 HP dv9000t with a Core 2 Duo 2.0ghz, 2gigs of memory and a GeForce 7600 with 512 megs of memory, the last one is a Dell XPS monster maxed out on everything. Strangly enough it runs better on the dv9000t with the GeForce 7600 card, the system with the x1600 runs much higher CPU using Dreamscene than either my dv9000t or my XPS.
So, on these it would be nice if CPU usage could be brought down so the battery doesn't run down quicker. Right now I pause Dreamscene when I unplug so it's not too much of a big deal, hopefully Nvidia and ATI listens and works on the drivers.
Reply #12 Saturday, February 17, 2007 8:09 PM
bistro: Who told you dreamscene will use almost no CPU?
Video decoding costs cpu cycles and high def video costs even more.
Reply #13 Saturday, February 17, 2007 8:39 PM
All the work is solid, but nothing has been released that's overwhelming just yet.
All the work is brilliant, but nothing that's blown anyone way has been released yet. Everyone that spent the hard earned money is ready to get jacked up just yet.
No disrespect is intended to the authors, great work by all.
Reply #14 Sunday, February 18, 2007 12:50 AM
i.e. it is nVidia / the drivers.
Reply #15 Sunday, February 18, 2007 1:02 AM
Reply #16 Sunday, February 18, 2007 11:48 AM
Reply #17 Sunday, February 18, 2007 12:51 PM
Using the deskscapes I have the Nvidia Purevideo codecs installed which allow hardware acceleration. Unfortunately, my graphics card doesn't support WMV with purevideo but it does with MPEG2.
Without Purevideo. I'm getting up to 80% cpu usage on WMV files, When I switch to an MPEG2 Dreamscene the Purevideo Hardware acceleration kicks in and my CPU drops to about 15% average. So for now, I only use MPEG2 vids for dreamscene.
You have to pay for purevideo codecs, about $20 or so but it is worth it if you play alot of video or watch dvd's on your computer.
Reply #18 Sunday, February 18, 2007 4:55 PM
Reply #19 Sunday, February 18, 2007 6:10 PM
Reply #20 Sunday, February 18, 2007 10:02 PM
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Reply #1 Saturday, February 17, 2007 3:24 PM