I see a lot of USB 3.0 pen dives that have practical speeds around 35MBps, the USB 2.0 bus spec is about 60 MBps. Have any of you used one of these USB 3.0 flash drives in an older 2.0 bus port? do you still get that high speed writing?
How can one expect 2.0 giving 3.0 speeds?
I see a lot of USB 3.0 pen dives that have practical speeds around 35MBps, the USB 2.0 bus spec is about 60 MBps. Have any of you used one of these USB 3.0 flash drives in an older 2.0 bus port? do you still get that high speed writing?
I got it, but budget usb 3.0 drives may not even reach 35MB/s. we can try testing it.You guys are missing the part where OP asked about usb3 pen drive with SLOW transfer speeds of 35 MBps... Probably any budget model...
Those pen drives will not lose speed on older usb 2 ports because they are anyway under the usb 2 speed limit.
I don't know if it's a budget drive but as you mentioned IT DROPS to 20 MB/s it's not sustained performance like high end drives.I am getting 60mbps write using samsung duo plus 128 gb on usb 3.1 port. This is one of the better pen drives in the market.
This goes down to 20-30 when using usb 2.0.
From what I've read, pen drives have comparatively crappy controllers and hence will almost never consistently hit the write speeds that external ssd's give, so forget theoretical speeds.
Also, I have a crap SanDisk usb 3.0 pendrive. It always performs worse on usb 2.0 when compared to usb 3.0. If it gives 35 Mbps on usb 3.0, it will give only 20Mbps on usb 2.0. Would be great if someone knows the reason for this!You guys are missing the part where OP asked about usb3 pen drive with SLOW transfer speeds of 35 MBps... Probably any budget model...
Those pen drives will not lose speed on older usb 2 ports because they are anyway under the usb 2 speed limit.
Also, I have a crap SanDisk usb 3.0 pendrive. It always performs worse on usb 2.0 when compared to usb 3.0. If it gives 35 Mbps on usb 3.0, it will give only 20Mbps on usb 2.0. Would be great if someone knows the reason for this!
Just an OOT suggestion from my experience - When I tested on crystaldiskmark, my samsung duo gave me consistent 60mbps write and 400mbps read. Fraudulent samsung markets it as 400mbps pendrive, whereas 400mbps was for read only. Only benefits with this pendrive are its dual connectivity (usb a and c) option and water/dust resistance.My SanDisk extreme pro 128gb gives me about 400 MBps read write on my front usb 3 ports rated at 5 gbps so I guess port is the usb 3.1 gen 1 spec.
Haven't been able to check on a usb 2 port anywhere yet
Thanks for sharing this bro. I think this should answer op's question too. I guess interface limitation combined with crappy flash in cheap pen drives causes double bottleneck.
I already own 16/32/64 GB variants of previous gen SanDisk extreme, certainly Sandisk extreme is a real performer, 128 GB pro variant will surely give 400Mbps as @vishalrao said. I am looking for Sandisk extreme pro 256GB variant but it costs approx Rs. 6k +-500If at all you guys are planning to get a pendrive, pay the 1,000 rs extra and get the SanDisk extreme. As @vishalrao said it actually gives ssd level write speeds too(400mbps). I don't understand why some popular websites recommend this samsung as an alternative to the SanDisk one, even mentioning it is "almost as fast".
@vishalrao how much you paid for this 128GB, any idea ?
right now it's selling for 3400 something.