02-07-2023, 10:30 AM | #31 | |
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Quote:
Last edited by Sirtel; 02-07-2023 at 10:32 AM. |
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02-07-2023, 12:44 PM | #32 | |
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I wonder why they went for a lower-capacity battery on the Sage than the Libra, though? |
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02-07-2023, 01:03 PM | #33 | |||
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02-07-2023, 02:15 PM | #34 |
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Check out https://www.youtube.com/c/MyDeepGuide/videos for in depth reviews, if you haven't already, to make sure the device you intend to buy will fill your needs out of the box.
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02-07-2023, 02:39 PM | #35 | |
the rook, bossing Never.
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02-07-2023, 09:12 PM | #36 |
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02-08-2023, 05:00 AM | #37 | |
the rook, bossing Never.
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Ereaders are all pretty slow, though the Sage is the fastest with Calibre. The MTP devices, even with USB-C, are the slowest. Summary The kind of USB connector tells you nothing about the speed. Ethernet achieves 1000 GBps by using parallel transfer on 4 pairs at the same time each at 250 Mbps. USB only uses one pair for data (USB-C extra signalling pair is used for power configuration and optionally there are pairs with Video). Also USB only transmits or receives, half-duplex. The 1Gbps ethernet full duplex transmits and receives at the same time using echo cancellation and hybrid techniques. USB was developed for keyboard, mouse and joystick etc and has been gradually tinkered with. It beat the superior firewire in the market as it's royalty free and fireware has a royalty. Firewire can run peer-to-peer and do networking, storage or streaming. The original version can be faster in the real world than USB 3.0. USB is a mess. Last edited by Quoth; 02-08-2023 at 05:09 AM. |
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02-08-2023, 05:35 AM | #38 |
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Sorry, that's just wrong.
USB 3.0 is full duplex using two pairs, 5 Gb/sec USB 3.1 is full duplex using two pairs, 5 Gb/sec, 10 Gb/sec USB 3.2 is full duplex using four pairs, 10 Gb/sec, 20 Gb/sec That's x10, x20, x40 faster than USB 2.0 HS. Last edited by Renate; 02-08-2023 at 05:37 AM. |
02-08-2023, 06:31 AM | #39 | |
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As Renate mentioned, USB C does not guarantee USB 3. My phone uses USB C but it's only 2.0 so transferring files is very slow. My Boox eReaders though use USB 3 and when combined with a USB 3.0 cable transfers run at that speed. Even with the slight overhead of MTP it's way faster than a mass storage USB 2.0 eReader like a Kobo. And the connector can tell you about speed sometimes. There is no USB 3 USB mini, and USB micro that supports 3.0 has a weird sidecar thing and USB-B for 3.0 has an extra growth as well. Only A and C are particularly confusing. Last edited by salamanderjuice; 02-08-2023 at 06:43 AM. |
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02-08-2023, 06:46 AM | #40 |
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I happened to be reading War and Peace (in German).
It takes less than a tenth of a second to transfer it. Code:
-> 1,792,013 2023-02-05 19:39 Krieg.epub - 0.093 |
02-08-2023, 07:35 AM | #41 |
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Calibre transfer is pretty slow anyway. So those lightning speeds only really matter to people who don't use Calibre to transfer their books. For me, using Calibre is far more important than transfer speed. I can wait for a few minutes to transfer a couple hundred books via Calibre.
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02-08-2023, 09:34 AM | #42 |
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In case you haven't seen it, there are actual reading/charging time numbers on the Sage here:
https://www.mobileread.com/forums/sh...92&postcount=1 Roughly speaking, 9 hours of reading, 2 hours to charge (measured across 2 Sages a year apart with at least 3 different chargers and cables). Last edited by enuddleyarbl; 02-08-2023 at 09:42 AM. |
02-08-2023, 12:55 PM | #43 |
the rook, bossing Never.
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Though Sage is about 45 to 50 minutes with a compatible charger. I don't what that might be except that's the time my Lenovo Yoga Tab charger does. The USB-C port on PC and any other charger is very much slower, likely only 500mA, rather than the 1.5A it can use.
I get more than 9 hours reading, but I don't use front light, wifi or BT. |
02-08-2023, 01:01 PM | #44 | |
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OS with buffering show command completion before actual copy conpletion. Clue is how long an eject takes after command completion. |
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02-08-2023, 01:04 PM | #45 | |
the rook, bossing Never.
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My point is that the connector used is almost unrelated to the USB speed version and something can have a USB 3.0 spec but not achieve as fast as a super fast SD Card on a USB 2.x speed due the nature of the device. You can even have USB-C connector and less than USB 2.0 speeds. Also the full speed of USB 3.0 isn't possible even with SSD to SSD, because that's the speed of the interface, there is the USB protocol overhead and the fact all USB is half-duplex. No eink Ereader is going to get close to the limit of USB 2.0 speed. The kind of port has no effect. USB-C is used now because it's the standard for phones, tablets and similar gadgets, especially in EU and countries that use EU standards. USB-C isn't about faster transfer or even faster charging on ereaders. Edit: Some details on USB 3.x https://en.wikipedia.org/wiki/USB_3.0 An enterprise class NVMe over USB3.x to a high end NVMe PCIe SSD in decent computer is about the only thing that will approach USB 3.x speeds. Irrelevant to ereaders. You don't USB-C connectors. It's possible on USB-A to extended micro-USB connector or extended USB-B connector. A regular micro-USB cable will work, but slower. Last edited by Quoth; 02-08-2023 at 01:15 PM. |
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