Is it safe to overclock the SD reader on Pi3?

[MartinPi]

Does it void the warranty? Will it lower the lifespan of the card?

[gregeric]

If the card in question is UHS then it's designed to be clocked at 100MHz, albeit when supplied with 1V8. Anyway, how are the card manufacturer going to know how fast it's been clocked? I wouldn't worry too much about the warranty, more so my data.

On a Pi you are (ab)using the UHS card with SDIO v2, 3V3 i/o, high speed 50Mhz mode overclocked to 100MHz. I have no idea if the lifespan of the card will be impacted: I'm guessing the reduced supply at higher frequencies is more to do with slew rates, and seeing as it seems to work OK at 3V3 I'm happy to continue to use it myself.

[MartinPi]

If the card in question is UHS then it's designed to be clocked at 100MHz, albeit when supplied with 1V8. Anyway, how are the card manufacturer going to know how fast it's been clocked? I wouldn't worry too much about the warranty, more so my data.

On a Pi you are (ab)using the UHS card with SDIO v2, 3V3 i/o, high speed 50Mhz mode overclocked to 100MHz. I have no idea if the lifespan of the card will be impacted: I'm guessing the reduced supply at higher frequencies is more to do with slew rates, and seeing as it seems to work OK at 3V3 I'm happy to continue to use it myself.

It won't case any damage to the actual Pi itself either correct? Looking into upgrading my SD card to either a Samsung Evo + or a Samsung Evo Pro.

[dom]

It won't case any damage to the actual Pi itself either correct? Looking into upgrading my SD card to either a Samsung Evo + or a Samsung Evo Pro.

It won't damage the Pi or affect the Pi's warranty.

[MartinPi]

[quote="MartinPi"It won't case any damage to the actual Pi itself either correct? Looking into upgrading my SD card to either a Samsung Evo + or a Samsung Evo Pro.

It won't damage the Pi or affect the Pi's warranty.[/quote]

That's great, looks like I'll just go ahead with the upgrade!

Now the upgrade in hand is as follows:

Currently using a SANDISK ultra 32GB SD card class 10 and am thinking of upgrading to either of the following :

Samsung Evo+ 64GB (UHS-I Grade 1 Class 10)

Or

Samsung Pro 64GB (UHS-I Grade 1 Class 10)

What would you recommend when I will be using it in a desktop envoirment along with the overlcock on the SD card slot?

[dom]

I'm a fan of the EVO/EVO+.
I use an overclocked EVO myself (and would replace with an EVO+ when the time comes).

[Dis93]

Another vote for the EVO+ here. (2 cards overclocked)
Pro seems overpriced.

[MartinPi]

Another vote for the EVO+ here. (2 cards overclocked)
Pro seems overpriced.

The price of them both is £23 for the Pro; and £16 for the Evo. So you'd say that's not worth the increase in price?

I also have my eye on a U 3 Class 10 SANDISK Extreme. https://www.amazon.co.uk/SanDisk-Extrem ... ge_o00_s00

[Dis93]

http://www.jeffgeerling.com/blogs/jeff- ... crosd-card
There is another link that's often linked on this forum, I can't find it, site search is lacking.
The overclocking guy no longer posts here, he recommended EVO+.

[Dis93]

AHA!
http://www.pidramble.com/wiki/benchmarks/microsd-cards
fruitoftheloom linked it in your other thread on this topic.

[MartinPi]

AHA!
http://www.pidramble.com/wiki/benchmarks/microsd-cards
fruitoftheloom linked it in your other thread on this topic.

Actually been reading this; what benchmark should I be focused most on? He does a random write but what about random read speeds?
looking good however for the Evo+!

[MartinPi]

AHA!
http://www.pidramble.com/wiki/benchmarks/microsd-cards
fruitoftheloom linked it in your other thread on this topic.

When studying the random read writes of both the Pro and the Evo+ on Amazon (screenshots for the disk speed test); the Pro still comes out first.

9 read and 2 write in the 4K random for the Pro
5 read and 0.8 write in the 4K random for the Evo+

[Dis93]

On one hand I have to agree with you that the Pro is faster, and as I said more expensive. That may or may not be an issue.
On the other hand I agree with broe23's assertion that shifting the OS to an SSD will give better results, again cost may or may not be an issue.
On my third hand/tentacle, the RPi ain't really a speed demon compared to other SBCs, and as such it's strengths lay in support and userbase, and maybe it isn't really a valid desktop replacement.

[MartinPi]

On one hand I have to agree with you that the Pro is faster, and as I said more expensive. That may or may not be an issue.
On the other hand I agree with broe23's assertion that shifting the OS to an SSD will give better results, again cost may or may not be an issue.
On my third hand/tentacle, the RPi ain't really a speed demon compared to other SBCs, and as such it's strengths lay in support and userbase, and maybe it isn't really a valid desktop replacement.

Thanks for all the help; just going to read more into it and see what kind of speed increase it is against my Ultra 32GB.

[Duhjoker]

I would be very careful about how you use your card and where you purchase it.

Fake and/or modified SD cards can short and go chernobl. This has a possibility of ruining your Pi and/or catching it on fire.

See this thread

viewtopic.php?f=63&t=148819&p=979260

[MartinPi]

It won't case any damage to the actual Pi itself either correct? Looking into upgrading my SD card to either a Samsung Evo + or a Samsung Evo Pro.

It won't damage the Pi or affect the Pi's warranty.

One last question, I'm using my Pi with a 5V 2.5A power supply, the official one from the Pi hut, would that be suitable for overclocking the SD bus to 100mhz?

[dom]

One last question, I'm using my Pi with a 5V 2.5A power supply, the official one from the Pi hut, would that be suitable for overclocking the SD bus to 100mhz?

The official supply is very good, so will be fine for this.

[MartinPi]

Right; last question I promise haha I'm completely stuck between the Samsung Pro and the Evo+...

Will be using it with the overclock; what one will give me the best performance and would the difference between the Evo+ and the pro be that noticeable? Anyone used both of the cards?

My use case is using my Pi 3 as a desktop environment with use of applications such as the following(all in Raspbian)

Kodi
Chromium
GIMP
INKSCAPE
HTML coding
Possible word processing

Will either of these cards offer a noticeable advantage to my SANDISK Ultra 32GB? And if yes, what one?

[MartinPi]

I'm noticing the Samsung Pro outperforms the Wvo + by a massive margin on a desktop computer with a USB 3 card reader; but in that one benchmark posted above tested in Raspbian: the Evo+ wins.

What should I go buy?

[MartinPi]

Anyone? Just want to know what is better with a Pi 3; a Samsung Pro or Evo+

[Dis93]

Buy one of each and report your results?

[MartinPi]

Buy one of each and report your results?

While money isn't that much of an issue between the two; can't justify getting both with my use case requiring only one card and I already have enough backup cards :/

You're using an Evo+ correct? With the overclock to 100Mhz; what's the the responsiveness like?

[MartinPi]

Versus that of a general card?

[Dis93]

I started with PNY Transcend 16GB, which I overclocked. No problems.
I got a Kingston, which crapped out and I had to ditch.
Following advice from this forum I got EVO+ 32Gb cards, worked fine, work fine-erer overclocked.

[MartinPi]

I started with PNY Transcend 16GB, which I overclocked. No problems.
I got a Kingston, which crapped out and I had to ditch.
Following advice from this forum I got EVO+ 32Gb cards, worked fine, work fine-erer overclocked.

Did you notice a great perfromance increase with your upgrade to the Evo?