@quicksilver Thanks, got it now. :-)

@quicksilver From https://www.raspberrypi.org/documentation/configuration/config-txt/overclocking.md:

force_turbo Forces turbo mode frequencies even when the ARM cores are not busy. Enabling this may set the warranty bit if over_voltage_* is also set.

I don't think it would have much effect on performance, but it will certainly make your Pi run hotter.

A Pi3 with lr-fba does not need overclocking. The slowdowns you see are either:

something that also happens on real hardware when there's too much action going on - part of the charm!

CPU throttling (check the temperature) or undervoltage

some games are programmed to look like they're slowing down (drama effect), it's something bizarrely intentional

@barbudreadmon so i can see only "Psikyo/Kaneko SH2 mode". should i update from source ?

EDIT:
i updated from source and i have got this speedhack option. Its perfect now, thank you

Sorry to necro this topic, but according to the following link, avoid_pwm_pll=1 was removed from the firmware in October 2015 and is now always enabled.

https://github.com/Hexxeh/rpi-firmware/commit/260bc9c7589b3359485fc02fed8f56d4c5eaad9a

Does this affect overclocking and, if so, how?

The Wiki still contains the following, which may now be incorrect. Does anyone know for sure?

By setting avoid_pwm_pll=1 (which negatively affects 3.5mm audio quality) you can overclock the individual GPU components with the parameters:

v3d_freq - speed of OpenGL 3D graphics processor isp_freq - speed of Image Sensor Pipeline h264_freq - speed of x264 video decoder (not used by emulators, used by Kodi)

@thewinterdojer said in How to determine how much over_voltage is needed? [Overclock]:

It almost doesn't seem like it's worth increasing your thresholds through overclocking without enabling performance mode...

That's just from my experience with Ondemand and limited testing. When a game is idle (under the hood) it will downclock to I think it's 600Mhz then kick back up when needed so games on that threshold or even when they need just a small "kick" over the idle clock speed for even a moment it has to clock up and down. I think like TMNT pointed out if you like how it's working I wouldn't worry to much about using Ondemand vs Peformance.

The performance gain on many games might be small but the trade-off if only marginal is worth it to me. Even if the Pi went the way of a singe-o-matic puff of smoke after 6 months. That hasn't been the case though. Instead of guessing where a few extra Mhz of speed might be needed/beneficial I figure juice them all as the electric bill will still only be a few pennies more. I think our rate here is .07 per kilowatt and the Pi is so modestly priced that it has paid for itself month after month of gaming. We usually spend quite a bit more for one evening out vs the cost of one Pi.

I was messing with Soul Caliber which doesn't really work on the Pi at all but you could see the effects of the up/down clocking. The tearing and stuttering would go from awful to horrendous. Lot's of yo-yoing! I was running a small script that shows the speed, temp, etc. and then used watch cgu_temp on a separate monitor to see it kicking up and down. The thought is you can find games that kind of give you an idea how that setting works and how you want to leverage it.

I have to enabled it through the runcommand menu on a emulator by emulator basis correct?

I would imagine you could enable it for just the emulators you want to boost. I set it globally via RetroPie Setup right in ES.

RetroPie Setup C Configuration / Tools 825 runcommand - The 'runcommand' launch script - needed for launching the emulators from the frontend 5 CPU configuration 6 Force performance

@dankcushions

I see...
Thanks.

@willreaper

I used this guide for the overclocking and this was the correct method and worked for me:

http://www.instructables.com/id/RetroPie-Overclocked-Raspberry-Pi-3-for-Video-Game/

Take a close look of that console image, where the lines are positioned in the boot config, that is the key thing that has to be correct.

After that, you need to try out different settings in the emulation, by opening the Quick Menu while game is running and changing the emulation options.

Disk drill can help to restore deletes images. For instance, with it help I recover deleted photos on my mac. With step-by-step instruction it's easy to do even for me :)

I do have heat sinks and a fan, I will try another power supply tomorrow and I will post my overclocks.

I tried it with overclock and stock and it behaves EXACTLY the same.

your sdram overclocks could cause sd corruption too i think. possibly the overvoltage also. personally i'd remove all forms of overclocking if you're seeing corruption/instability.

@H3X1C https://retropie.org.uk/docs/Overclocking/

I only had time to run two tests on the 4.1.14 setups, and one on the 4.1.5. I hit F4 to exit out of Emulationstation (thought that would be best for the test).

So first things first, the Linux version:

uname -a on the 4.1.14 system says:

Linux retropie 4.4.26+ #915 Thu Oct 20 17:02:14 BST 2016 armv6l GNU/Linux

uname -a on the 4.1.5 system says:

Linux retropie 4.4.34+ #930 Wed Nov 23 15:12:30 GMT 2016 armv6l GNU/Linux

(which doesn't make sense to me because if I'm reading it right the 4.1.14 is dated about a month BEFORE the earlier 4.1.5? - yes I double checked it)

And the AikonCWD benchmark tests:

4.1.14 Pi Zero #1:

Raspberry Pi Benchmark Test Author: AikonCWD Version: 3.0 temp=43.3'C arm_freq=1000 core_freq=500 sdram_freq=500 gpu_freq=500 sd_clock=50.000 MHz Running InternetSpeed test... Ping: 41.189 ms Download: 55.11 Mbits/s Upload: 11.64 Mbits/s Running CPU test... total time: 140.9210s min: 18.51ms avg: 56.36ms max: 167.58ms temp=48.2'C Running THREADS test... total time: 187.7533s min: 55.33ms avg: 75.09ms max: 175.15ms temp=47.6'C Running MEMORY test... Operations performed: 3145728 (123569.78 ops/sec) 3072.00 MB transferred (120.67 MB/sec) total time: 25.4571s min: 0.00ms avg: 0.03ms max: 79.21ms temp=47.6'C Running HDPARM test... Timing buffered disk reads: 60 MB in 3.00 seconds = 19.97 MB/sec temp=46.0'C Running DD WRITE test... 536870912 bytes (537 MB) copied, 68.1628 s, 7.9 MB/s temp=44.4'C Running DD READ test... 536870912 bytes (537 MB) copied, 24.8409 s, 21.6 MB/s temp=43.3'C AikonCWD's rpi-benchmark completed!

4.1.14, Pi Zero #2

Raspberry Pi Benchmark Test Author: AikonCWD Version: 3.0 temp=44.4'C arm_freq=1000 core_freq=500 sdram_freq=500 gpu_freq=500 sd_clock=50.000 MHz Running InternetSpeed test... Ping: 39.223 ms Download: 52.72 Mbits/s Upload: 11.70 Mbits/s Running CPU test... total time: 141.0996s min: 23.53ms avg: 56.41ms max: 175.19ms temp=49.8'C Running THREADS test... total time: 179.6370s min: 49.04ms avg: 71.85ms max: 158.69ms temp=50.3'C Running MEMORY test... Operations performed: 3145728 (124335.28 ops/sec) 3072.00 MB transferred (121.42 MB/sec) total time: 25.3004s min: 0.00ms avg: 0.03ms max: 99.41ms temp=51.4'C Running HDPARM test... Timing buffered disk reads: 62 MB in 3.02 seconds = 20.56 MB/sec temp=50.3'C Running DD WRITE test... 536870912 bytes (537 MB) copied, 61.7905 s, 8.7 MB/s temp=48.7'C Running DD READ test... 536870912 bytes (537 MB) copied, 24.8082 s, 21.6 MB/s temp=48.7'C AikonCWD's rpi-benchmark completed!

4.1.5, Pi Zero #2 again (#3 is scraping ROM's right now ;)

And FML.....are the repositories down???? I've tried this like 5 times now... pi@retropie:~ $ curl -L https://raw.githubusercontent.com/aikoncwd/rpi-benchmark/master/rpi-benchmark.sh | sudo bash % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 2172 100 2172 0 0 7028 0 --:--:-- --:--:-- --:--:-- 7144 Reading package lists... Done Building dependency tree Reading state information... Done The following extra packages will be installed: libmysqlclient18 mysql-common The following NEW packages will be installed: libmysqlclient18 mysql-common sysbench 0 upgraded, 3 newly installed, 0 to remove and 0 not upgraded. Need to get 702 kB/758 kB of archives. After this operation, 3,475 kB of additional disk space will be used. Err http://mirrordirector.raspbian.org/raspbian/ jessie/main mysql-common all 5.5.52-0+deb8u1 404 Not Found [IP: 2001:41c9:1:3ce::11 80] Err http://mirrordirector.raspbian.org/raspbian/ jessie/main libmysqlclient18 armhf 5.5.52-0+deb8u1 404 Not Found [IP: 2001:41c9:1:3ce::11 80] E: Failed to fetch http://mirrordirector.raspbian.org/raspbian/pool/main/m/mysql-5.5/mysql-common_5.5.52-0+deb8u1_all.deb 404 Not Found [IP: 2001:41c9:1:3ce::11 80] E: Failed to fetch http://mirrordirector.raspbian.org/raspbian/pool/main/m/mysql-5.5/libmysqlclient18_5.5.52-0+deb8u1_armhf.deb 404 Not Found [IP: 2001:41c9:1:3ce::11 80] E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing? Raspberry Pi Benchmark Test Author: AikonCWD Version: 3.0 temp=51.4'C arm_freq=1000 core_freq=400 sdram_freq=450 gpu_freq=300 sd_clock=50.000 MHz Running InternetSpeed test... Ping: 47.37 ms Download: 31.19 Mbits/s Upload: 11.36 Mbits/s Running CPU test... bash: line 38: sysbench: command not found temp=51.4'C Running THREADS test... bash: line 43: sysbench: command not found temp=50.8'C Running MEMORY test... bash: line 48: sysbench: command not found temp=51.4'C Running HDPARM test... Timing buffered disk reads: 56 MB in 3.10 seconds = 18.04 MB/sec temp=51.9'C Running DD WRITE test... 536870912 bytes (537 MB) copied, 73.4755 s, 7.3 MB/s temp=55.1'C Running DD READ test... 536870912 bytes (537 MB) copied, 27.6583 s, 19.4 MB/s temp=55.1'C AikonCWD's rpi-benchmark completed!

@omiez It's not a must, but it will help with some games.

Here's a guide: https://github.com/retropie/retropie-setup/wiki/Overclocking

@Wizardling Glad I could help. That 5V fan should keep things nice and stable at 1300 MHz. I do not recommend overclocking the CPU at all without active cooling, but sounds like you have that covered. Best of luck to you in your experimentation friend.

Excellent work....very very thorough. Love it!

@alrdtakn1 This may very well be happening to me and I don't even realize it as I'm using Ethernet. If you haven't done so, download the latest image with the latest firmware and hopefully that solves the problem. I'm afraid that's the only advice I can offer other than disabling the SD card overclock at this time. It doesn't sound like you are doing anything wrong. This isn't the first story I've heard about finicky wifi with an overclock, it seems the included module is very sensitive to certain settings.