-
1. Re: Should Hyperthreading Be Enabled? - i7 920
Bill Gehrke Mar 3, 2010 2:02 PM (in response to Jennifer Elkan)Hyperthreading will improve your performance in Premiere. It does reduce the amount that you can overclock the CPU. You have only mild overclocking so it may not adversely effect your overclocking. If you want a tool to see the effect of hyperthreading versus no hyperthreading use my Premiere Pro Benchmark (PPBM4).
-
2. Re: Should Hyperthreading Be Enabled? - i7 920
Harm Millaard Mar 3, 2010 2:24 PM (in response to Jennifer Elkan)Jennifer,
You should always use HT. If you use the C0/C1 stepping, you idle temps @ 3.7 GHz would be around 35 degrees C and under heavy load (Prime95 torture test after 4+ hours) should be around 75 degrees. Bill can tell you what these figures are with the D0 stepping, but never higher, only lower.
If your figures are higher, look at your cooling for improvement. HT will offer a significant improvement, around 35-45%.
-
3. Re: Should Hyperthreading Be Enabled? - i7 920
Jennifer Elkan Mar 3, 2010 6:40 PM (in response to Jennifer Elkan)Thanks Bill and Harm for the reply! Wow, Bill. You've definitley done your homework! Amazing! Okay so I'll leave hyperthreading turned on. My PC right now idles at about 47C. At full load it will hit 85C unless I open the case. I bought a big Cooler Master Cosmos case which doesn't seem to offer very good cooling. for my main CPU cooler I went with Maximum PCs suggestion of the Cooler Master 212.
http://www.maximumpc.com/article/reviews/cooler_master_hyper_212_plus
I'd like to keep the temps cooler. I'm not sure how people are OCing to 4.0 and beyond on air. Voltage is stock. Any ideas?
-
4. Re: Should Hyperthreading Be Enabled? - i7 920
pabGA Mar 3, 2010 7:05 PM (in response to Bill Gehrke)Bill, I went to the link and could not find where to download the software. There was a red x under the title, but could not access it. Was that the download link?
Thanks,
Patrick
-
5. Re: Should Hyperthreading Be Enabled? - i7 920
Bill Gehrke Mar 4, 2010 5:33 AM (in response to pabGA) -
6. Re: Should Hyperthreading Be Enabled? - i7 920
pabGA Mar 4, 2010 2:34 PM (in response to Bill Gehrke)Thanks, guy
Patrick
-
7. Re: Should Hyperthreading Be Enabled? - i7 920
joshtownsend Mar 4, 2010 4:56 PM (in response to pabGA)I bechmarked my computer about 10 days ago. It was called Josh's Peckenpah blazer I think. I don't see it on the list Seemed like it would b3 somewhere in the middle of the list. Shoud I redo it? I had a q9550 oc's to 3.6, 8 gig ram, Asus p5q pro. I couldn't understand the where it would be placed in the overall scheme. avi render was around 8 sec and mpeg was around 38sec. Didn't save the file just assummed it would end up on the list eventually. Not having hypertheading on my chip does obviously slow me down.
Wish they made duel i7 motherboards, Not sure about the Xeons. Isn't Intel coming out with some 6 core chips this months?
-
8. Re: Should Hyperthreading Be Enabled? - i7 920
Bill Gehrke Mar 4, 2010 6:58 PM (in response to joshtownsend)Josh, I went back two weeks and found nothing. I assume you emailed the output.txt file to my PPBM email address, is that correct?
They do make i7 chips in the dual CPU type. They are the Xeon 5500 series. They show up on the results page, but because the motherboards are "server class" they are not readily overclockable. Yes, Intel will have a 6 core, the i7-980.chip probably this month but it is in the >$1000 price range.
-
9. Re: Should Hyperthreading Be Enabled? - i7 920
Jennifer Elkan Mar 10, 2010 1:25 PM (in response to Jennifer Elkan)Okay so I've got hyper threading enabled. As I'm typing this I have 4 1 hour video clips that I'm encoding/exporting the audio to mp3. I'm noticing my CPU usage is running between only 10 - 15% of full throttle. Any idea why I can't export using 100% of CPU power? Each 1 hour video clip is taking about 2 minutes to convert to mp3.
-
10. Re: Should Hyperthreading Be Enabled? - i7 920
shooternz Mar 10, 2010 1:28 PM (in response to Jennifer Elkan)Each 1 hour video clip is taking about 2 minutes to convert to mp3.
Is that not fast enough for you?
-
11. Re: Should Hyperthreading Be Enabled? - i7 920
Jennifer Elkan Mar 10, 2010 1:45 PM (in response to shooternz)That's not the point. : )
Why spend the money on an i7 chip and use only 10-15% of it?
-
12. Re: Should Hyperthreading Be Enabled? - i7 920
Bill Hunt Mar 10, 2010 1:50 PM (in response to Jennifer Elkan)It is probably the operation that you are performing.
As a test, maybe load up one of the Sequences with some Effects, like Color Correction, etc., and look at the CPU usage when Exporting to MPEG-4. Are more cores/threads in play?
Good luck,
Hunt
-
13. Re: Should Hyperthreading Be Enabled? - i7 920
Harm Millaard Mar 10, 2010 1:53 PM (in response to Jennifer Elkan)A computers performance is a balance between the most important ingredients: CPU, memory, disk and sometimes video.
If you see relatively low CPU usage, that means that the other components are busy. It may be a memory bottleneck, it may be a disk bottleneck and very, very occasionally a video bottleneck.
Often this happens when significant amounts of data have to be processed by memory and then stored on disk. Often it is simply disk thruput that is bottlenecking the system.
When I encode a large timeline on my mediocre system, I get results like this:
This means that my system in reasonable balance, but memory or disks are holding back performance, otherwise the CPU load would have been more than the 70-80% I saw. Quite simply the CPU has to wait for the other components. Now, in this case this happened with a lot of resident programs active like Perfect Disk, SnagIt, SEP, and Mozilla with around 10 tabs open , so that may account for the lower CPU load.
This was a pretty long SD timeline (05:21:48:23) encoded to MPEG2-DVD with quality set to 5 and AC3 sound, which encoded in around 20 minutes. This can of course cause some disk trhoughput problems and memory congestion.
If you want to know how your system is configured and tuned, run the http://ppbm4.com benchmark and send the results to Bill (and possibly send them to me by PM) and you can see how your system performs in relation to other systems.
-
14. Re: Should Hyperthreading Be Enabled? - i7 920
Jennifer Elkan Mar 11, 2010 8:02 PM (in response to Harm Millaard)Harm, that makes a lot of sense. Thank you and thanks everyone for your responses!
-
15. Re: Should Hyperthreading Be Enabled? - i7 920
Bill Gehrke Mar 12, 2010 6:48 AM (in response to Harm Millaard)Harm, what is the tool that you used to get that screen shot?
-
16. Re: Should Hyperthreading Be Enabled? - i7 920
Harm Millaard Mar 12, 2010 7:09 AM (in response to Bill Gehrke)While running Process Explorer/System Information (always on top), I used SnagIt to capture the screenshot.





