Can anyone verify the speeds of the USB ports of the following products… Prime 4 = USB 3.0??? Prime 4+= ISB 3.0??? Prime Go = USB 2.0??? Prime Go+ = ISB 2.0??? SC Live 4/2 = ISB 2.0???
Please correct me if I am wrong.
Is this anything to do with recording ?
No. I have huge libraries. I would love to take my full library with me. But it’s a bit slow on prime go. I think it’s because of the usb connection speed. I haven’t tested the 300k tracks on my prime 4 yet. But if it is much better. Then I would want to get a sc live or go+ if they have faster ports. Especially sharing the usb bus with Soundswitch
I have a Prime Go+ and use video files (*.mp4) which load instantly from a Samsung T7 SSD plugged in to the USB port. They are far slower when using a SD card.
If I use a USB3 hub to have the SSD and Soundswitch dongle active there is no difference in speed.
It’s probably an issue with the efficiency of the library/database rather than the speed the tracks are accessed or possibly the read speed of the drive you are using.
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What’s a bit slow?
Searching for songs. I want to carry my full library with me (currently 330k) because I work a few wedding venues in the middle of no where without access to the internet. Searches on it take up to a minute on the prime go. It is a crucial x9 4TB which is a lot faster than any USB 2.0 or 3.0 can read. It has all been prepared in Engine Desktop. I hit optimize database before and after each export.
But this has no bearing on my original question. I need to know the USB bus speed of each device. Because if it it faster on my Prime 4 which I believe is USB 3 than my Go which I believe is USB 2. Then I want to purchase a new device that is smaller and lighter than my prime 4 for my mobile gigs.
I think it has everything to do with your question. Why? Because the situation is a lot more complicated than you know. Coming at this issue from a “what’s the speed of the USB port” perspective is pretty naive – no offense.
The Device is a USB 3.0. That’s not why you’re experiencing slowdown. It’s the DB read/write cycles as @Homeland101 mentioned.
The SOC that’s in these devices is from 2014. 330K records to search through is an i/o intensive operation.
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But the same search on the same drive on my MBP or iPad is in mili-seconds? You are basically telling me that a faster bus speed has no bearing whatsoever? The same search on the millions of tracks in Tidal takes less than a second.
The reason I say it has no bearing on my original question, is because my original question wasn’t how intense is the I/o on searching large databases. My original question is what is the USB bus speed. I want to know the USB bus speeds of those devices listed. It doesn’t matter why I asked, the question was not answered.
Another point. The year the chip was made. My 2010 MacBook Pro with dual core i5, can search the same library in Virtual DJ, with a USB 2 mechanical drive and give results in 2-3 seconds. Again my point is if I can make it a few seconds faster I will buy a new Denon device, I just want to know the bus speeds. If the prime Go+ and SC Live’s are also USB 2, I will just wait for new USB-C devices as their is no reason to replace my Prime Go’s.
Final point. I managed a Dtree database in 1998 that had millions of travel records on a Pentium 133Mhz processor, and results in searches were instantaneous.
I could spend loads of time educating you as to why you are comparing apples to bananas, but I’ll gladly step back from this one.
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So you do not have the answer. Does anyone?
The way how data base is coded, accessed, indexed and read is a big part. Plus all the other tasks that cpu needs to do at the same time add up to the read time. No matter what is the hardware, if the data base is not well optimised, it will behave slow. As for Engine data base, I noticed that art work slows down the data base read times. I got rid of the art work from all of my tracks (I don’t need it anyway) and my data base is instant.
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The irony of this is that according to Sqlite, streaming blobs off the DB is reported to be faster. 
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Or import to collection all tracks without analyzing but analyze only tracks that are in playlists.
Thanks for the db tips. I would still like to know the USB speeds. My prime 4 has blue ports, which should be USB 3. My go has black which should be USB 2. What I am really curious, is this accurate, and before I buy another device , if the sc live 4 or prime go have USB 3
By any metric 300k tracks is obscene. My main collection which covers pretty much every gig I do (open format) is about 3500 tracks.
I played a 5 hour pub gig last night with my Prime Go+ and played 95 tracks the whole night.
Maybe you need to analyze and prep your most popular tracks which would be in the DB, then keep the others in folders that can still be accessed on the player without being in the main DB.
This is 100% a database efficiency issue rather than anything to do with the speed of the ports.
Maybe send in a support ticket and ask Denon directly since the information they provide in the specs is quite inconclusive?
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Blue ports in denon are usb 3. Any others are usb 2.
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I do weddings too and for some of them, especially the all dayers, my fee would pay for second Prime Go in one booking. Obviously for any paid event, we have a backup plan, including full backup kit for when that drunk bridesmaid tips a pint of vodka over your main kit.
Why not have another prime go as your backup device and have it connected all the time, with its own hard drive / SSD - that way you can have so many tracks cued and ready to launch, that 30 seconds of search time is simply negated.
Similarly, dig deep into the ideas of the Prep list and even making playlists on the devices on the fly …. The idea being that you can search to your hearts content during the longer tracks and the times where there aren’t guests coming up with requests etc , adding found songs to the prepare list or a playlist , so the searching bit is done - it’s then super fast or indeed instant to look through 10 to 100 songs on a prep list or “live that night” playlist , without having to search the drives a second time
