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Re: C7.5 Multithread processing performance experience?

OC'ed? Yes. The i7 990X is basically a CPU sold for that purpose, only.

Second hint: My tests included a full round of stock conditions trials, following exactly the same methodology. Absolutely the same effect observed. Just at different capacity levels. Again, please excuse my brevity here, as I said I have a good amount of documented evidence of my tests. So can tell you OC'ing did not influence the overall observation.

In return, could I now be humored and explain what kind of mysterious trouble OC'ing may cause? Is that what you've heard or is it your personal experience? I'm not trying to be a prick, I'd just much prefer to speak in clear(er) terms that can lead us, the conversation, this thread, to somewhere helpful and meaningful.
by Gusfmm
Wed Jan 22, 2014 3:00 am
 
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Re: C7.5 Multithread processing performance experience?

Part of what drove me to finally spend time trying to benchmark my system's performance was, as I already said, my own instrumental template growth and thus, Cubase's performance starting to show capacity issues I'd not experienced before. But another factor was a colleague (also Cubase user) reporting that even though he had just assembled a new Haswell i7 PC (upgrading from a first gen i7-900 series) with some of the bells and whistles you'd expect, he had been unable to see any important performance improvement as a result (which I found impossible to accept). But that's his reality, which I obviously don't doubt for a second.

It is curious to see somebody on one of the above references reporting basically the same experience with his new i7-4770 build. This would hint, to me, that there is something about Cubase's multiprocessing performance that is not yet up-to-par, close to being optimal. The fact that the coupling with VEP effectively enhances system performance substantially, reported by me and several other users, seems to support that notion. This is my first re-observation.

But something else I find worth clarifying is that, at no point have I been specifically concerned, or have uniquely questioned ASIO performance. Not at all. My concern is about my system's performance as a whole. Cubase is the centerpiece, but there are several factors that importantly influence its performance. One of them, the audio hardware interface, as many have mentioned. Having said that though, I feel I can somewhat safely leave that factor aside from my main concerns, since this is a fixed constrain in the system, a hardware latency, regardless of what DAW, VSTi's or plug-ins I use.

In other words, at my Mackie ONYX driver buffer size of 128, my ASIO performance will be what it is, what the hardware can handle, and however efficiently the driver has been written or not. In my case, theoretically a driver-reported 5.2ms latency (regardless of whether or not that is 100% accurate). But it is what it is, a fixed constant factor. So when dawbench.com tested audio interfaces, and they found ABC is more efficient than XYZ, and I happen to have XYZ, that just means that there are other interfaces with better electronics and drivers, that can process the ASIO audio flow faster. Thus able to handle more before drop-outs.

Point I'm trying to make, this is just one factor amongst many. And it is fixed. Something I have to live with.

Now, my real interest is in exploring the conditions, beyond the above, how my system performance reaches what I call "capacity" (defined on first post).
by Gusfmm
Wed Jan 22, 2014 10:59 pm
 
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Re: C7.5 Multithread processing performance experience?

More succinctly, to close out the thought-

Since that system performance, and reaching this (max) "capacity" is associated with flawless (no drop-out) audio, and I believe ASIO performance basically depends on how well and promptly the audio software can keep up filling the ASIO buffer to avoid flow interruptions and thus drop-outs, I believe there is a strong relationship between ASIO performance and system performance. So excluding the ASIO hardware/driver latency factor, it is Cubase + your system's processing power that determine what that "capacity" is to be.

On the one side of my tests, I did see a slightly lower capacity when I switched my CPU to stock speeds, e.g. no OC'ing, more noticeable on the VEP series of tests. Which I think substantiate my above observation. But at the same time, the system speed difference was not substantially different for me to see major changes.

It also intrigues me that some people have reported such effect (no major improvement, that is) when they upgrade their systems. And I can only try an educated guess at it in saying that it might well be the case if Cubase's overall "VST Performance" is being somewhat limited by the way their code now handles all the processing, or multi-processing. Why in turn might be in line with the observation that C7.5 is not fully utilizing the multi-core capacity, at least in my tests results.

Would welcome thoughts and comments. (and sorry for the wordiness)
by Gusfmm
Wed Jan 22, 2014 11:27 pm
 
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