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Discussion Starter · #1 ·
Go to http://www.wmvhd.com and download the "step into liquid" 1080p demo video.. report back here with CPU usage and if the clip was choppy or not.

WMV HD 1080p is very CPU demanding (look at the system requirements at the bottom of the page :eyemove: ) and I'd like to see how it performs with various CPUs. I took this shot with my digicam because due to hardware rendering it couldn't be captured in a screenshot.

On mine it ran at about 40~60% CPU usage and was liquid smooth at all times. I had a few programs open aswell as can be seen in the pic. :)
 

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i downloaded all of the WMV HD videos a longggggg time ago, they ran perfectly smooth even when i had the 2500+ at stock speeds.
 

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This cant be compared between AMD and Intel CPUS due to Hyper Threading as the task manager doesnt properly report CPU usage
 

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Wind, Life, Eternity
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Wow... the video is so clear oO But my comp (2000+ Throughbred, integrated gf4 mx, ingetraged sound) can't handle it :( 100% cpu usuage...
But at least the sound is smooth :p
 

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Discussion Starter · #6 ·
ChrisRay said:
This cant be compared between AMD and Intel CPUS due to Hyper Threading as the task manager doesnt properly report CPU usage
I figured someone would bring that up, but no. It goes over 50% at times, so the HT issue isn't there.. if it was it would never go above 50%. I think WMP 10 is a multithreaded app.
 

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NextGenerationGaymulation
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hehe 114 mb for 2 minutes though :S
 

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At first I downloaded an 1080i one, and I ended up looking at a slideshow. Then I tried another 780i, got about 4-5 FPS. Moved it to the P4 2.8, CPU usage at ~60-65, ran just fine. The quality is amazing, thanks for the link.
 

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cooliscool said:
I figured someone would bring that up, but no. It goes over 50% at times, so the HT issue isn't there.. if it was it would never go above 50%. I think WMP 10 is a multithreaded app.
Nope. Your wrong. It incorrectly reports CPU usage. This was covered numerous times at nvnews.
 

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Discussion Starter · #11 ·
Well, that can mean anything.. lower or more. :) All I know is I had room to spare.. it stayed smooth when opening/switching apps, etc.
 

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hmm, cooliscool, maybe you havent heard...or you just arent listening to chrisray :p

HT processors CPU usage is not correctly reported. in fact, i've never seen a PC with HT record CPU usage of 100%, even when doing something like encoding Divx.
 

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Discussion Starter · #13 ·
I realize that, but from what I heard it would only display a max of 50%, when on my CPU it gets to about 60%.. not that it matters anyway.
 

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The thing is it will not display an accurate reading regardless, as Windows sees it as 2 CPUs, not as kind of the opposite of nVidia's SFR SLi mode because of hte load lalancing.
 

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cooliscool said:
I realize that, but from what I heard it would only display a max of 50%, when on my CPU it gets to about 60%.. not that it matters anyway.
You said you had more programs running, so probably their threads were splitted over the "two cpus". That's surely why you could reach more than 50%.
 

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regardless, like Kane said, it will never display the correct amount. a perfect example, like i already mentioned, is when i wasusing my friend's P4 2.6 with HT to encode a video in Xvid, it was at like 80% CPU usage. it just doesnt properly report the CPU usage.
 

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Ran fine here. 2.2ghz 200x11 AXP 2100+ :) Hella nice quality
 

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Runs fine on my PC as well. I think most modern computers can handle it fine.

Ugh, the ugly myth of incorrect CPU usage in task manager with HT. I don't know where people get this idea. HT is treated as two CPUs, not one!!! Therefore, multiple threads must be run to utilize both "CPUs". This is a plain fact of SMT and task manager is technically reporting it correctly. Note that CPU usage has absolutely nothing to do with CPU performance, it's how Windows is using/utilizing the CPU(s). Furthermore, as HT is technically capable of executing more than one thread at a time it is technically not being fully utilized when run with single threads (unlike CPUs like the Athlon which absolutely cannot run more than one thread at a time).

hushypushy said:
HT processors CPU usage is not correctly reported. in fact, i've never seen a PC with HT record CPU usage of 100%, even when doing something like encoding Divx.
Using a single-threaded application will never achieve 100% in HT. Try using a program that utilizes multi-threading and see the results.
 

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Demigod. It never loads fully ever on an Intel CPU. Therefore its not comparable to AMD or Intel CPUS due to the way intel CPUS load on single threaded applications. I was just pointing out this was a bad example for testing CPU load between vendors.
 
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