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by Fidelius
Sat Mar 12, 2016 11:22 am
Forum: General discussion
Topic: Dougie is 20,000
Replies: 18
Views: 3050

Re: Dougie is 20,000

The raspberry pis have kept me mildy amused since October 2012, it's taken us all back to the early days in the late 1970s / early 1980s when this stuff was all new and mysterious. How true! My twin brother told me Is this the brother who helped bringing the great Amstrad CPC to us (ZX Spectrum) fa...
by Fidelius
Sat Mar 12, 2016 11:10 am
Forum: Beginners
Topic: xfce?
Replies: 8
Views: 1804

Re: xfce?

I read somewhere that xfce is meant to be light and fast. Is it? Yes, it is and it runs very fine on the Pi3 and the Pi2, and for XFCE fans like me it also runs on Pi1. :-) Since Raspbian is Debian based, you can "apt-get install" all Debian included desktops like XFCE, KDE, and so on. The graphica...
by Fidelius
Fri Mar 11, 2016 8:04 am
Forum: General discussion
Topic: Pi 3 Overheating Issue?
Replies: 110
Views: 108320

Re: Pi 3 Overheating Issue?

Thank you MarkTF and Gkreidl for your explanations. Very interesting. (And I forgot to mention next to my throttle-back values, that I have a small passive heat-sink sitting on-top of the SoC. Edited now.) Also I still didn't find a reliable source clarifying the question whether the Broadcom Soc's ...
by Fidelius
Thu Mar 10, 2016 7:45 pm
Forum: General discussion
Topic: Pi 3 Overheating Issue?
Replies: 110
Views: 108320

Re: Pi 3 Overheating Issue?

I've done a one hour job running with 400% CPU, When the temperature reached 80+ C, the RPi started to throttle down and never went beyond 83 C. It was mostly running with a clock speed between 922 and 960 MHz. Is this with a Pi3 inside a case or with a "naked" Pi3 ? I suspect a case, because there...
by Fidelius
Thu Mar 10, 2016 12:11 pm
Forum: Beginners
Topic: What to expect (how powerful is the Raspberry?)
Replies: 23
Views: 3943

Re: What to expect (how powerful is the Raspberry?)

And, if I wanted to, is it possible to "boost" the Raspberry with hardware? By enabling for example the alpha-version of the new OpenGL-driver via raspi-config, you'll get a boosted i.e. hardware-accelerated and hence very usable Blender (via apt-get). Compared to the very, very slow software-only ...
by Fidelius
Tue Mar 08, 2016 7:14 am
Forum: General discussion
Topic: 32 or 64 bit
Replies: 26
Views: 184908

Re: 32 or 64 bit

dannyk96 wrote:I know this is an old thread, but the announcement now is..

There *is* a 64bit Rasperry Pi - with the new Model 3 , even has built in Wifi and Bluetooth
That's true. Now the question of the original thread poster got relevant. ;-)
by Fidelius
Mon Mar 07, 2016 9:20 am
Forum: General discussion
Topic: Pi3 speed compared to Pi2
Replies: 91
Views: 16749

Re: Pi3 speed compared to Pi2

I've got a new SD card now, one that I have chosen for its random r/w performance but haven't had an opportunity to try it. I will report here what I have. Yes, please. The card I am using at the moment with the pauses is a Kingston 16GB one that has worked fine in 2B and Zero, but that's not to sa...
by Fidelius
Mon Mar 07, 2016 8:25 am
Forum: General discussion
Topic: Pi3 speed compared to Pi2
Replies: 91
Views: 16749

Re: Pi3 speed compared to Pi2

I had time last night to properly try out the 3, and I was troubled by some annoying pauses in gui response that I haven't been seeing with the Pi2B, this was happening while the processor was utilisation was showing it was not busy. So, new SD card is on order. I'm also a bit disappointed that I c...
by Fidelius
Sat Mar 05, 2016 3:18 pm
Forum: General discussion
Topic: Pi3 speed compared to Pi2
Replies: 91
Views: 16749

Re: Pi3 speed compared to Pi2

Michael Larabel did some nice Pi3 benchmarks on his Linux Benchmark site Phoronix , comparing the Pi3 to other ARM boards including Pi2 and Pi-Zero. As usual Michael includes real world applications in his benchmark series. And the Pi3 did very well! Raspberry Pi 3 Benchmarks vs. Eight other ARM Lin...
by Fidelius
Fri Mar 04, 2016 10:45 am
Forum: General discussion
Topic: The Raspberry Pi 3 Model B Q&A thread
Replies: 457
Views: 209775

Re: hardinfo benchmarks for RPi3 anyone?

can anyone provide the hardinfo benchmarks for RPi 3 (Blowfish - CryptoHash - Fibonacci - N-Queens - FFT - Raytracing)? Here they are: -CPU Blowfish- This Machine Unknown MHz 42.120 Intel(R) Celeron(R) M processor 1.50GHz 26.1876862 PowerPC 740/750 (280.00MHz) 172.816713 -CPU CryptoHash- This Machi...
by Fidelius
Fri Mar 04, 2016 10:04 am
Forum: General discussion
Topic: The Raspberry Pi 3 Model B Q&A thread
Replies: 457
Views: 209775

Re: The Raspberry Pi 3 Model B Q&A thread

Anyone else having reboot issues after getting the latest firmware update via sudo rpi-update? I ave tried latest version of firmware with a clean install on 2 Pi3s and both are failing to reboot after the update appearing to indicate SD card removed. Yes, same here, when I did a "rpi-update" this ...
by Fidelius
Fri Mar 04, 2016 9:24 am
Forum: General discussion
Topic: How to disable the Pi3's WLAN & Bluetooth ?
Replies: 15
Views: 172622

How to disable the Pi3's WLAN & Bluetooth ?

When on 29th February 2016 Mr. Upton made the nice Pi3 anouncement , in the posts below the announcement, a user asked if the Wifi and Bluetooth features of the Pi3 could be disabled. Mrs. Upton kindly answered: You can turn Bluetooth and WiFi off – we’ll make sure there’s an easy interface for you ...
by Fidelius
Fri Mar 04, 2016 9:01 am
Forum: General discussion
Topic: RPi 3 SoC at nearly 100 °C, reporting 80 °C
Replies: 238
Views: 98018

Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Ssvb, very interesting things you tell! The Pi3's ARM8 Cortex-A53 really starts to fascinate me. I wouldn't have imagined 20 years ago when we hand-coded the ARM2,3,6 and StrongARM in our Acorn Archimedes'es, that one day we would have such a "beast" under our fingers – let alone taking the size of ...
by Fidelius
Fri Mar 04, 2016 7:53 am
Forum: General discussion
Topic: RPi 3 SoC at nearly 100 °C, reporting 80 °C
Replies: 238
Views: 98018

Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

As we can see, the "minerd" application is roughly twice more power hungry than your "stress" application. And this is a reasonably realistic workload (just one example of a decently NEON optimized code). The users may encounter such workloads in the wild. The "cpuburn-a53" application is roughly t...
by Fidelius
Fri Mar 04, 2016 7:39 am
Forum: General discussion
Topic: RPi 3 SoC at nearly 100 °C, reporting 80 °C
Replies: 238
Views: 98018

Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

with the increase in heat and associated power waste. So my question is, can I UNDER clock the Pi3, maybe take it down to 900 or 1000, is there a downside to this apart from a slight performance drop? You mean underclock constantly, I suppose. Then I don't know the answer. When in idle mode, i.e. w...
by Fidelius
Fri Mar 04, 2016 7:31 am
Forum: General discussion
Topic: RPi 3 SoC at nearly 100 °C, reporting 80 °C
Replies: 238
Views: 98018

Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Wait.. so even with a heatsink it won't run at 1200 mhz under full load? Yes, when the Pi is inside a case like my Pi2 Aukru case, which I linked to a few posts earlier . My Pi2 case included a simple aluminum heatsink having the same size as the Broadcom ARM/GPU/RAM chip and isn't needed with a Pi...
by Fidelius
Fri Mar 04, 2016 5:15 am
Forum: General discussion
Topic: RPi 3 SoC at nearly 100 °C, reporting 80 °C
Replies: 238
Views: 98018

Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Whats the point with a 1200 Mhz clockspeed if it can only maintain it a few minutes? Yes, this behavior is new for us Pi users. So far with our Pi1 and Pi2 we never needed to worry about any overheating. So it's indeed a bit disappointing when you intend to use the Pi3 inside a case – you won't be ...
by Fidelius
Thu Mar 03, 2016 2:04 pm
Forum: General discussion
Topic: Moving from Pi 2 to 3 using same image
Replies: 5
Views: 2004

Re: Moving from Pi 2 to 3 using same image

sudo apt-get update && sudo apt-get dist-upgrade This also works with Ubuntu Mate for the Pi, plus a sudo rpi-update ... because this way Ubuntu for the Pi fetches the Foundation's newest Raspbian kernel + firmware. In the end you can happily exchange the µSD-card between the Pi2 and Pi3. That's gr...
by Fidelius
Thu Mar 03, 2016 11:24 am
Forum: General discussion
Topic: RPi 3 SoC at nearly 100 °C, reporting 80 °C
Replies: 238
Views: 98018

Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

In the other similar thread ( Pi 3 Overheating Issue? ) which now links to here, there's an interesting pointer to an article named The Raspberry Pi 3 does not halt and catch fire , stating : Testing two Raspberry Pi 3 boards — the first I received from the Foundation in the run up to Monday’s launc...
by Fidelius
Wed Mar 02, 2016 4:35 pm
Forum: General discussion
Topic: RPi 3 SoC at nearly 100 °C, reporting 80 °C
Replies: 238
Views: 98018

Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

But in the mean time are the generic ones any good? www.amazon.in Your linked ARM heatsink with a Pi case looks very similar to the heatsink which came with my Pi case (please see my previous post linking to it here in the same thread). In any case James' advice worked for me: Ray tracing is very c...
by Fidelius
Wed Mar 02, 2016 1:25 pm
Forum: General discussion
Topic: RPi 3 SoC at nearly 100 °C, reporting 80 °C
Replies: 238
Views: 98018

Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

The Pi will start to throttle-back when the temperature sensor reaches 85C, so you will want to avoid getting too close to that figure simply to maintain performance. However there is not going to be any significant danger to the SoC running at that sort of temperature or even consideraby hotter th...
by Fidelius
Wed Mar 02, 2016 1:17 pm
Forum: General discussion
Topic: RPi 3 SoC at nearly 100 °C, reporting 80 °C
Replies: 238
Views: 98018

Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Concerning the mentioned difference of 17°/20 °C between the Videocore's temperature sensor near the ARM8, and external heat cameras: Does the Pi3's internal temperature sensor always report a value being 17°/20°C below external sensors? I.e. is it linear, or "only" when the ARM is getting hotter? B...
by Fidelius
Wed Mar 02, 2016 1:04 pm
Forum: General discussion
Topic: RPi 3 SoC at nearly 100 °C, reporting 80 °C
Replies: 238
Views: 98018

Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

jamesh wrote:Ray tracing is very compute intensive, so I would suggest a heatsink. Use the one you have, it should be fine. The tape *should* transfer the heat.
Thanks for this info, it sounds good. Will do so, in order to keep the ARM8 running at its 1200 MHz also during compute intensive tasks. :-)
by Fidelius
Wed Mar 02, 2016 8:31 am
Forum: General discussion
Topic: RPi 3 SoC at nearly 100 °C, reporting 80 °C
Replies: 238
Views: 98018

Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

The official advice is that "you may need a heatsink" for the Pi3, especially in a closed environment running intensive code. So would a heat-sink be advisable when I want to use a Pi3 regularly within our family's Blender network to ray-trace? Meaning the Pi3 doesn't run with a full load all day, ...
by Fidelius
Wed Mar 02, 2016 8:25 am
Forum: General discussion
Topic: RPi 3 SoC at nearly 100 °C, reporting 80 °C
Replies: 238
Views: 98018

Re: RPi 3 SoC at nearly 100 °C, reporting 80 °C

Does the Pi3's internal temperature sensor (living in the Videocore I read in this thread) always report 20° C too little? Or "only" when the ARM is hot? Because when I do: > vcgencmd measure_temp on a Pi3 running a lightdm desktop with no big load (i.e. idle mode more or less), it says: ~44° C Whic...

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