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Opinion on overclock settings



  • @GoldManSex778

    Looking closely at the megapi board, the usb hubs appear to share a powered connection through the case as opposed to being more directly routed to the pi. Much too soon before, when I had been using over_voltage=1, having both my controller charging and the logitech receiver plugged in to these front ports did cause the power to drop low enough for warnings but not consistently leading me to think that it is the power supplies microusb connection.

    I have disabled the swap space on all of my installations, I can't say if this is very important because I haven't operated much at all while it was enabled.

    I'm wondering what make did your Pi come from? For example I have an element14 board.
    Also the microsd is it UHS-1 or 3 or a kingston class(4) or (6). A slower microsd in theory could offer instability when computations exceed its limits.

    I have $40 dollars that I have saved and want to spend on upgrading something on my pi.
    A controller is likely. I was also looking into getting an rtc module but these take the gpio that the case is already using, I don't know if I could fit it. An official powersupply was a maybe, but I'm finding I can work with the one I have now. A smaller fan that will fit correctly but sanding the case a millimeter I think will work just as well. There was a link someone shared me, that was a fan module controller that worked with retroflag cases, to control the fan power.
    Any other ideas? Controller recommends? What do you use?



  • @GoldManSex778
    over_voltage_sdram=1 can be discarded, as the default voltage for all the sdram components on the rpi3b+ are
    over_voltage_sdram_p=1
    over_voltage_sdram_i=2
    over_voltage_sdram_c=2
    where over_voltage_sdram=1 will be ignored and 2 will step up the over_voltage_sdram_p by 1 giving all the value of 2.
    To lower the voltage below the default you have to use over_voltage_sdram_p_min=-1 and so forth.

    I found a Sega controller.
    Good reviews. I dont think I will be missing analog too much. 10ft usb.

    Some of the console controllers can be had for the same price, I think I saw an XB1 official for $22. Which has me hesitant on whether I should get something like this instead.



  • @Efriim I don’t know what make my pi is, i will note that here when I open this thing up again. SD card is a Sandisk ultra plus v10, it was $20 at Walmart.

    That is a pretty awesome looking controller, official sega! Do they make a Saturn version? That’s the only way it could be better. I use a ps4 controller through the Bluetooth, it has worked well for a year.



  • @GoldManSex778

    Sandisk ultra plus v10

    That is a class10, is equivalent by some standards to a UHS-1 by definition 10mb/s minimum transfer speed. This card has up to 48mb/s transfer. Which as far I know is high functioning and should be suitable for retropie.

    There are sometimes unique uses and advantages to having a class 1 or class 4, they have lower minimum transfer rates and so will have lower bus width(incorrect term?) when reading small amounts of data. Reading snes roms, saves and configs, will be more efficient however an entire operating system will be slow, as these also have lower top speeds, capacity and often quality.

    I've been testing the same settings 1500 and 500, 500, 500. It is possible that the manufacture of pi, has used different ram for the device. The brand distributors RS components; I have read they use a sdram chip of lower technical performance.
    Or it is possible that a reset was missed when changing settings.
    But don't be disheartened, the real performance is how you use it.
    Also I have only ever used and seen one rpi3b+ so I am skeptical that this is the case, but I am curious.

    There is a Saturn version of the controller, it lacks a "mode" button when compared to the genesis. I can't tell if I'm looking at computer generated imagery of the controller anymore when I look at amazon, I wonder how it feels and if it is the same size, if it makes my hands bleed, if the reviews are fake.
    I'm also considering the Super NES, PS2 or Wii Classic(nintendo) adapters to usb.



  • @Efriim I haven't had any problems with the sd card, roms are loaded from a usb drive anyway, so all it does is load scraped images and videos; the usb drive i use is USB 2.0 which has never seemed be an issue either. Loading times are satisfactory, even for large ps1 games.

    That sega controller would look dynamite with your case, but if the sky is the limit then why not consider a bliss box? https://bliss-box.net/



  • @GoldManSex778
    I only load dos/pdfs/ports/scummvm/savestates from usb. They were most convenient, since dosbox requires a configuration already, and scummvm creates a shortcut. The ports are easy to symlink and the savestates are like a backup. And they can all be plugged into a computer and used that way too.

    I have a UHS-3 microsd, I think it performs a little slower than a class-10 in regards to the entire operating system.

    Honestly you got to help me out.
    Playstation Classic or 8bitdo M30
    I get a controller either way, actually I get two if I grab a PS classic. The PS Classic controllers are only 5ft long.



  • @Efriim have you checked these out? I've found them to be pretty great for most systems on Retropie



  • @simpleethat
    I usually skip them when I see them for $50-$100. The dpad:analog integration is cool along with two more buttons, and it has wireless as well as a 10ft cord.

    I think I would get the MadCatz fighter style controller, MadCatz wasn't that bad back in the day. It loses wireless for a 9ft usb cable. And adds an analog and ps4 touchpad.



  • @Efriim perfectly understandable about the price. I can say that the build quality on them is fantastic, but I also own $100 worth of controllers for playing NES and Genesis games... kinda silly whenever I actually think about it. For reasons that I can't really fathom I always avoid wireless when it comes to my retropie builds. Maybe one day I'll worry myself enough to think about that but not today; tomorrow isn't looking to good either.

    Isn't the Playstation classic fairly easy to mod and fairly robust hardware wise?

    Anyway, I hope you're pleased with your decision however it goes.



  • @simpleethat
    I think I prefer wired controllers, lag and battery life isn't a worry, and you can't run off with your controller and forget where you put it.

    I haven't looked far into the psclassic. I think it uses a different emulator than pcsxr yet can install the ARM compiled pcsx and also other emulators probably retroarch. I think the only external storage available is the USB front slot and the internal memory storage is probably 16gb. Performance I hear fails in some games, even the built-in ones, but I don't know any specifications or details about this.

    I ordered the 8bitdo M30 (make me cancel it and get the psclassic). Altogether this is going to be a gift for a friend, the M30 I think will be a great 16-bit console pad. Once I give away my retropie it would be cool to have something else to replace it, I love PSX and I like at least the Menu System and Switch Disk, 16gb is enough for me, but 5ft controllers I think is not...



  • I have the 8bitdo M30.

    • It has 4 modes for different types of connectivity (macOS, dinput, xinput, nint-switch) and can also be used plugged in with a USB-C connection.
    • It comes with a 3ft USB type-C, Using the USB connection seems to lose function of two of the center navigation buttons, favourite and heart)
    • Holding the controller the way it is shaped I want to hold it higher, but can't operate the dpad unless I hold it lower, however it isn't at all challenging to hold it just right, I'm possibly just being picky.
    • The dpad maps as an axis in at least 2 of the 4 connection modes, but it is easy to press and use. The start button can't be held for more than 3 seconds because this shuts down the controller. Mapping the controls I expected wouldn't be easy, and it looks like I'll need to make emulator specific adjustments to get what I wan't out of it, this goes for the ES and RetroArch side.

    Other than that, I wish it had a select/mode button and came with a 6ft usb type-c.



  • @Efriim I think you made the right choice, buying a ps1classic is taking a step backward when you have a well curated retropie setup; it is just a money grab from sony.

    Having the controller shut down after holding the start button is a pretty cool feature, I wish the ds4 did that. Also a way to check battery level would be awesome.

    Maybe you can get functionality back for those 2 buttons with the xpad driver?



  • @GoldManSex778
    I returned the 8bitdo M30 for full credit to get the PSClassic of equal or lesser value. I will have two controllers and a console to hack. The specs of the psclassic are a slight improvement to the RPI3B I think it has the smaller and more efficient Arm Cortex A35 as opposed to the A53, running at 4x1.5ghz. The GPU and RAM are both significantly better with opengl3 and vulkan support, and ddr3. Development is furthering in modifying the underlying system for most emulation, it only has 16gb of internal emmc, no wireless and only 2 usb slots, it also keeps the archaic usb-micro power supply.

    I am expecting for it to arrive tomorrow.

    And onto overclocking. While still in the experimental ranges. I've been using an under-clock combined with an over-clock at:

    arm_freq=1200 #Maximum without reaching the next AVS level.
    gpu_freq=250
    core_freq=500
    sdram_freq=500
    #No over-voltage
    

    One of the top games I got; Armored Core 3 Portable on PPSSPP, I can get a steady 30fps with these settings. Where the core could go in the range of 460-530 on either end of performance; any more and I think it would need an over_voltage and any less and I think I would see the performance decrease for this emulation at least. Similarly the arm_freq=1200 any more at all and the over_voltage_avs_boost will take effect and increase the core operating voltage from 1.2375V to ~1.35V taking it down to arm_freq=1000 and the performance suffers. The sdram can be underclocked to 400 but it makes a wedge for the fps to drop occasionally, 450-500 isn't bad and the sdram can be overclocked independent of the core voltage and with greater stability behind the slower cores.



  • @GoldManSex778
    here are some small powersaving configurations to add to config.txt since you are using a nespi case.

    #disable both the onboard activity and power leds.
    dtparam=act_led_trigger=none
    dtparam=act_led_activelow=off
    dtparam=pwr_led_trigger=none
    dtparam=pwr_led_activelow=off
    

    i first read them here https://sudomod.com/forum/viewtopic.php?f=43&t=4258

    and if the ds4 is at all like the ds3, holding the ps(home) button down for 10 seconds will power it off, though that is a relatively long button press.


  • Global Moderator

    @Efriim How much 'power saving' yields disabling the LEDs ?



  • @mitu
    it may be enough



  • @mitu I have some experience wiring leds on models and stuff, depending on the size you need about 10 milliamps for a 1.6 mm led. So assuming the pi is drawing all 2.5 amps that would be a savings of ~0.5%. That’s with model train hobby leds, I imagine the led on the pi is smaller than 1.6 mm and probably more efficient.



  • @GoldManSex778
    Could you do something for me? To check the key values for the DS4 controller using evtest; evtest /dev/input/event4 | grep -E 'code|Testing'

    The output should look like this

    
        Event code 304 (BTN_SOUTH)
        Event code 305 (BTN_EAST)
        Event code 307 (BTN_NORTH)
        Event code 308 (BTN_WEST)
        Event code 310 (BTN_TL)
        Event code 311 (BTN_TR)
        Event code 312 (BTN_TL2)
        Event code 313 (BTN_TR2)
        Event code 314 (BTN_SELECT)
        Event code 315 (BTN_START)
        Event code 316 (BTN_MODE)
        Event code 317 (BTN_THUMBL)
        Event code 318 (BTN_THUMBR)
        Event code 544 (BTN_DPAD_UP)
        Event code 545 (BTN_DPAD_DOWN)
        Event code 546 (BTN_DPAD_LEFT)
        Event code 547 (BTN_DPAD_RIGHT)
        Event code 0 (ABS_X)
        Event code 1 (ABS_Y)
        Event code 2 (ABS_Z)
        Event code 3 (ABS_RX)
        Event code 4 (ABS_RY)
        Event code 5 (ABS_RZ)
        Event code 4 (MSC_SCAN)
        Event code 80 (FF_RUMBLE)
        Event code 81 (FF_PERIODIC)
        Event code 88 (FF_SQUARE)
        Event code 89 (FF_TRIANGLE)
        Event code 90 (FF_SINE)
        Event code 96 (FF_GAIN)
    
    

    I'd like to know if the event codes will match my DS3 with the sixaxis driver, if I will need to make additional configurations or no.



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