| Stereo Tool https://www.forums.stereotool.com/ |
|
| CPU https://www.forums.stereotool.com/viewtopic.php?t=4795 |
Page 1 of 1 |
| Author: | oldiesstation [ Sun Apr 21, 2013 3:23 am ] |
| Post subject: | CPU |
Will ST with composite clipper run on a Core 2 quad Q 6700? I notice several post where users are running core 2 duo (probably clocked).I have a eng friend wanting to set up a box on the cheap.thanks |
|
| Author: | Bojcha [ Sun Apr 21, 2013 3:43 am ] |
| Post subject: | Re: CPU |
Right now i am running Full FM preset on E5400 slighltly clocked from 2,7 to 3.0 with new clipper strictness at 18 with Declipper ON. Q6700 - http://ark.intel.com/products/30790/ E5400 - http://ark.intel.com/products/40478/ That CPU is 2.66GHz but also with 8MB more cache and higher FSB, also 65nm so more heath. |
|
| Author: | hvz [ Sun Apr 21, 2013 3:44 am ] |
| Post subject: | Re: CPU |
http://www.cpubenchmark.net/ Look at this, and calculate the performance per core. ST uses only 2, if each core is fast enough it should work. |
|
| Author: | oldiesstation [ Sun Apr 21, 2013 3:52 am ] |
| Post subject: | Re: CPU |
http://www.cpubenchmark.net/cpu.php?cpu ... 40+2.66GHz Looks like it would work fine. |
|
| Author: | hvz [ Sun Apr 21, 2013 12:24 pm ] |
| Post subject: | Re: CPU |
Q6700: 3360, divide by 4 cores gives 840 E5400: 1606, divide by 2 cores gives 804, but it's overclocked to 3 GHz so *3/2.7 = 893. Of course, the CPU is not the only thing that affects the total execution speed - memory speed is also important, and CPU's might behave differently due to different cache sizes etc. This benchmark is only an indication. I actually would never have expected it to run on that E5400... My laptop is an i7 2630QM (2 GHz): i7-2630QM: 5643, divide by 4 cores gives 1411. Which is quite a lot more - I should be able to run it even in single core mode based on this. But I can't. On the other hand, in multicore mode I have enough headroom to push the declipper quality settings close to the maximum, which has quite a big effect on the CPU load. If latency is not an issue and you're running with Latency set to 4096 samples, you can always reduce the Quality slider quite a lot - at high latency settings this has very little effect on the audio. If you reduce Quality to - say - 50%, the CPU load is 75% of the normal CPU load, which helps a lot. Just for comparison: My old Pentium 4: Intel Pentium 4 2.40GHz: 241 |
|
| Author: | Clipper [ Sun Apr 21, 2013 3:31 pm ] |
| Post subject: | Re: CPU |
Using your guide to the PassMark figures: I am running the software on an Intel Q9650 which rates 4,314 or 1078.5 per core. I want to build a rackmount PC for the software and was looking at putting in an i3 3220 which rates 4,239 or 2,164.5 per core (only 2 cores). An Intel i7 3770K rates at 9,630 or 2,407.5 per core. As you're saying ST SA only uses 2 cores, is the i3 3220 the better choice here? Thanks, Clipper |
|
| Author: | hvz [ Sun Apr 21, 2013 9:57 pm ] |
| Post subject: | Re: CPU |
The i7 is still slightly faster per core! But probably a lot more expensive too. By the way, one thing that makes these comparisons very difficult and unreliable is Hyperthreading - if a PC has hyperthreading it will score higher in these benchmarks but it will have nearly no effect on Stereo Tool. Now, if the price difference is small I would probably go for the i7 since there's more room for future improvements. No idea if ST will ever use it though. I heard from someone who is using the composite clipper on a Q9650, he says it's running properly. But he does have a lot more latency (8 ms) due to the longer time needed to perform all the calculations. I might - maybe - add a 4 core version some day to reduce this effect (not planning to do this right now though). On a faster CPU the effect will be much less than these 8 ms. And even if I would do this, it won't help for most other filters (most filters use 1 core per channel, and there are only 2 channels in a stereo signal). There's another thing that I want to do which reduces artifacts when using lower latency settings, which will cause the CPU load (and number of cores used) to double. But I don't know if I'll ever add that to the software version. |
|
| Page 1 of 1 | All times are UTC+02:00 |
| Powered by phpBB® Forum Software © phpBB Limited https://www.phpbb.com/ |
|