Raspberry Pi 3: Tested Overclock Values – Failures and Successes
This page contains sets of overclock values which I have experimented with on my Raspberry Pi 3. It forms an appendix to the main post: Overclocking the Raspberry Pi 3: Thermal Limits and Optimising for Single vs Multicore Performance
On stock Pi 3 hardware, with passive cooling (aluminium heatsink) on the SoC, and a naturally vented case, the final maximum settings for CPU, GPU, RAM, and voltage were:
arm_freq=1350
core_freq=500
over_voltage=4
The following is a set of various attempted overclock setting values extracted from Config.txt – all values except tested, working, entries are commented (initial ‘#’ character)
Test values were left in the config file to progressively narrow down a stable set of values.
#note: do not set force turbo with over voltage - voids warranty
Stable Values
# stable on 4 memtester, 4 core mprime, but governor applied at c 82c
#arm_freq=1300
#over_voltage=2
# STABLE in 4 core memtester c 73c
#arm_freq=1300
#over_voltage=1
# appears stable - memtester 4 simultaneous
#arm_freq=1350
#sdram_freq=450
#core_freq=525
#over_voltage=4
# note: sdram value is system default
# appears stable
#arm_freq=1350
#sdram_freq=450
#core_freq=525
#over_voltage=4
# reducing core (gpu) to 500 (default 400) in absense of reliable test tools
# display sending no dvi - keyboard unresponsive. unfortunately network was not connected before the test. 4 x memtester
#arm_freq=1350
#sdram_freq=450
#core_freq=500
#over_voltage=4
# appears to be issues with memtester causing the Kernel to run out of memory
# only overclocking cpu. gpu core default 400. ram default 450
#arm_freq=1350
#over_voltage=4
arm_freq=1350
core_freq=500
over_voltage=4
Unstable Values
# lockup during boot
#arm_freq=1400
#over_voltage=1
# lockup during 4 core mprime
#arm_freq=1350
#over_voltage=1
# lockup during 4 core mprime
#arm_freq=1350
#over_voltage=2
# lockup during 4 core mprime
#arm_freq=1325
#over_voltage=1
# not stable - errors in mprime, lockups etc
#arm_freq=1300
#over_voltage=1
# initially appears stable - hits limiter in 4 core memtester at 80c
# unstable on 4 core memtester
#arm_freq=1300
#sdram_freq=500
#over_voltage=2
#freezes mprime 3 cores
#arm_freq=1350
#sdram_freq=500
#over_voltage=2
# froze mprime 4 core from cold
#arm_freq=1350
#sdram_freq=500
#over_voltage=3
# errors in mprime 4 cores. froze
#arm_freq=1375
#sdram_freq=500
#over_voltage=4
# appears stable - note sdram @ 500; pi 2 max 450
# subsequently determined to be unstable (4 x Memtester)
#arm_freq=1350
#sdram_freq=500
#over_voltage=4
# appears stable - raspbian / kodi / retropie
# subsequently determined to be unstable (4 x Memtester)
#arm_freq=1350
#sdram_freq=500
#core_freq=500
#over_voltage=4
# memteseter - multiple failures
#arm_freq=1350
#sdram_freq=550
#core_freq=500
#over_voltage=4
# memtester 4 simultaneous - failures in all
#arm_freq=1350
#sdram_freq=525
#core_freq=525
#over_voltage=4
# failure - memtester 4 simultaneous; loop 2. bit flip
#arm_freq=1350
#sdram_freq=500
#core_freq=525
#over_voltage=4
# failure - system froze - 4 x memtester
#arm_freq=1350
#sdram_freq=475
#core_freq=525
#over_voltage=4
Related Posts
- Links: Raspberry Pi and Gaming Emulation via RetroPie
- Overclocking the Raspberry Pi 3: Thermal Limits and Optimising for Single vs Multicore Performance
- Overclocking and Stability Testing the Raspberry Pi 2 – Part 1: Overclocking
- Overclocking and Stability Testing the Raspberry Pi 2 – Part 2: Stress testing the CPU with mprime
- Overclocking and Stability Testing the Raspberry Pi 2 – Part 3: Stress testing the RAM with Memtester
- Overclocking and Stability Testing the Raspberry Pi 2 – Part 4: Stress testing the SD card storage with the Stability Test Script
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