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Linux - Embedded & Single-board computer This forum is for the discussion of Linux on both embedded devices and single-board computers (such as the Raspberry Pi, BeagleBoard and PandaBoard). Discussions involving Arduino, plug computers and other micro-controller like devices are also welcome.

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Old 07-17-2019, 11:59 AM   #1
NicoD SBC
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Registered: May 2018
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Video : Review of the Raspberry Pi4B - It's a monster...


Hi all.
I've made a review video about the Raspberry Pi 4B.
Here it is.
https://www.youtube.com/watch?v=u2rDYDv-BwA&t

I've found out some nice things I didn't see in any other review videos.
The performance is great, ram is so much better, USB3, gigabit ethernet...

But it also has some problems, still undervolting with most PSU's. You need a heatsink+fan for good performance.

Here all my test results.
Greetings, NicoD

Raspberry Pi4B
--------------

Raspbian Buster
---------------
Blender results
Default clock 1.5Ghz
No fan Tinker heatsink : 1h57m23s
3v fan Tinker heatsink : 1h29m07s

OC clock 1.75Ghz 3V fan : 1h19m25s
1.85Ghz 3V fan : 1h14m05s
2.00Ghz 3V fan : 1h10m24s
2.00Ghz 3V fan : 1h09m39s gpu_freq=600 sbc-bench http://ix.io/1Ojp

Ubuntu arm64
------------
default clock 3v fan Tinker heatsink : 1h21m05s
1.75Ghz 3v fan : 1h08m42s
2Ghz 3v fan : 1h00m12s sbc-bench http://ix.io/1OqR

Temperatures
------------
Big Tinker heatsink no fan idle : 58C
maxed out : 83C heavy throttle to 1000Mhz after about 3 minutes
3V fan idle : 37C
maxed out : 50C
OC 1.75Ghz 3V fan maxed : 55C
OC 1.85Ghz 3V fan maxed : 57C

Power consumption
-----------------
Default idle no wifi : 0.64A
Default idle with wifi : 0.7A
Default maxed : 1.3A
2Ghz over voltage 4 GPU 600Mhz idle : 0.8A
maxed : 1.85A (2A with fan)
Transfer speeds
---------------
USB3 with SSD : 394MB/s
SD-cardreader read : 40MB/s
SD-cardreader write : 20MB/s
WIfi : 24Mbps

Issues
------
Governor again shows falls frequency numbers.
vcgencmd measure_clock arm <- show the real ferquency

Undervoltage problem is still there. It requires +5.15V or it's undervolting and clocked to 600Mhz


OC
--
over_voltage=2
arm_freq=1750

over_voltage=4
arm_freq=2000
gpu_freq=600

SoC : Broadcom BCM2711B0 quad-core A72 1.5Ghz (up to 2Ghz)
GPU : VideoCore VI @ 500Mhz
RAM : LPDDR4-2400 SDRAM
HDMI : dual micro HDMI 4K 60Hz + 1080p or 2x 4K 30Hz
USB : 2x USB 3.0 / 2x USB 2.0
Ethernet : Gigabit Ethernet
 
Old 08-02-2019, 12:54 AM   #2
eric.vanh
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Registered: Jan 2016
Location: Montreal,CAN
Distribution: Suse Leap 15.1 & Win10
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Nice info Nico !
 
Old 08-02-2019, 04:13 AM   #3
fatmac
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Registered: Sep 2011
Location: Upper Hale, Surrey/Hants Border, UK
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It'll be great once they sort out the software drivers, but until then, mine is back in it's box.

EDID not working - no USB booting - I need both.
 
  


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