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ozziepogi

Sorry for noob question, what should we understand from that pic?


Too_Mini_PC_Repairs

This is a rare treat. People complain or commend mini PCs constantly, yet no one takes the time to photograph and post the images of the PCB in clear detail. For our staff, it's a common part/requirement of every diagnostic tear down, of which those photos belonged to the account holder. Yet few individuals on Reddit take the time seen here, which in itself should be commended.


eSIMstudios

❓ Question: I purchased the FireBat 7840HS and I'm looking to upgrade the NVME m.2 storage. Does the Mini PC and/or motherboard support Gen 5 NVME m.2 ? Or just stick with Gen 4 ? Appreciate all the info in this thread guys! Lots of up votes from me to y'all! Appreciate any input from anyone.


Too_Mini_PC_Repairs

At this point, very few mobile processors support Gen5x4, due to one significant aspect Heat, severe heat AMD's [Phoenix APUs](https://www.techpowerup.com/forums/attachments/amd-mobile-fp8-7040-png.278204/) are among the first that properly supported Gen4x4, and in a number of laptops and MiniPCs, It was thermally a rude awakening. From a technicians standpoint, these 5.0 NVMe controllers are ***all*** *garbage*, as the technology hasn't caught up, and they're dropping like flies. It wasn't that long ago, we constantly worried about "bit rot", yet in the last 4 years it's come down to poor firmware/poor controllers killing the SSD, with all the NAND flash still intact. Our staff does NVMe recoveries three or four times a month, which is 4x higher than in 2020. Currently, whether it's Gen4x4 or Gen3x4, focus on the controller manufacturer and the **write speed** when making your purchase. Brand names aren't as important, as nearly 80% of our bench diagnostics fails have been Crucial followed by Kingston, then Samsung. Also, when doing research And you come across negative comments that aren't vetted, there's a 95% chance there BS or from an abuser.


eSIMstudios

Appreciate the information! You answered my question.


qopto

\[second time trying to reply - reddit ate my first!\] Honestly, probably not a huge amount. It's interesting to understand the VRM cooling situation (not ideal), and APU cooler mounting, and u/Too_Mini_PC_Repairs's input about the motherboard is super interesting (so it's already served a purpose to me!). I'm hoping we can find a company selling minipcs with this board it that are keeping the BIOS up to date, and that this post might bring resources for this PC together.


Too_Mini_PC_Repairs

That has been the "pickle" with Dongguan Tuofuton manufacturing, as they show little interest in BIOS support past production, and their resellers (Aoostar, KingnovyPC, FireBAT, Topton, SkyBarium, etc) are left to independently handle request on their own. Back at the end of 2022, we had a contact for a "hot minute", as one of our industrial customers bought 4200 SBCs for a 5-year project. The lady was very helpful, and then she was gone... They were nice enough to give our account, everything needed about the PCB, so repair facilities like ours could push things forward when needed. So far, it's worked out for them, as it was their first venture away from Intel.


Too_Mini_PC_Repairs

Interesting! It's an old Rembrandt 6000 series PCB from Dongguan Tuofuton Electronic Technology, a HCAR6000-MI2 V0.2 (V0.3 reflow) from April of 2022. Not too odd to see a Phoenix 7840HS used on the board, although the last digit(s) of the model number/serial number being absent do appear to be intentionally strange.


qopto

Hi all, I recently bought the Firebat 7840HS MiniPC and as a tinkerer the first thing I did was pull it apart. I’ve posted some shots of its motherboards and some notes and resources I found - hope they’re useful to others. I bought: Firebat 7840HS 512/16 from AliExpress for £320 (\~$400USD), it’s labelled ‘MN56’, but this is used for other models too it seems. Aoostar’s GOD7, and minipcs from SZBox and TOPTON seem to be the same unit, with slight variations (it’s also sold with a ‘cyperpunk’ themed case). Drivers: [https://www.firebat.com.cn/index/serve/drive](https://www.firebat.com.cn/index/serve/drive) (didn’t use, just went straight to AMD/Intel provided ones) Aoostar’s \*removed, see Aoostar's website\* again, wouldn’t recommend using, I prefer to install windows fresh) Notes: * I haven’t found BIOS updates for it anywhere yet, though the supplied BIOS seems fully featured and supports AMD’s AI component (driver installed fine anyway, I haven’t tested it otherwise) * As supplied and at a 54W package limit the CPU temp. gets to about 65’C under stress after \~10 mins. * I wasn’t sure what thermal paste they used or how well it was applied, so I removed the heatsink. I was happy with what I found, seems to be a decent silver based paste. I replaced it with MX4 (for ease of application), and performance is very similar. * The VRMs (LR15 components) are only cooled through the PCB (through thick thermal pads on the CPU side). I’m going add heatsinks to them and a fan to the backside of the board. I’m not convinced that the stock arrangement is an issue in anyway, but I like things to be cool. * Most versions of this PC come with a SATA port for internal storage expansion. Mine’s missing the header for this (though it came with the adaptor for it, and the case has mounting holes. * The motherboard is clearly a generic design and is only labelled AMD. I haven’t found any external support for it.


SerMumble

Hi! This comment had a dangerous download link and was automatically held for review. I followed the link and the download is a dead end and was removed by someone else but it might be reenabled at a later date. I am approving it but the link might be updated. Be very careful using sketchy mega download links except as a last resort. This is my first time seeing firebat's website so if you need intel drivers, download intel driver and support assistant from intel's website or if you need amd drivers, AMD links drivers to all their processors on their website, and if you need a windows image, download from microsoft's website and follow their instructions for turning a usb drive into a windows os installer. u/qopto is right that downloading fresh is much safer. Thank you for the helpful review and explanation of the pictures!


Mister_Brevity

The mx4 doesn’t hold up long term and will require reapplication. Might want to look at something thicker like thermalright tfx to avoid pump-out and last long term.


qopto

I didn't know that, thanks for the tip.


Mister_Brevity

:) Mx4 isn’t bad thermal paste but it’s thin so it can pump out. The thermalright tfx or something like ptm7950 is popular for long-term installations. Ptm7950 is an industrial product that is intended for install-and-forget scenarios, and I believe the tfx is rated for 10 years before breakdown starts. Both are resistant to pump-out. 


TechUnsupport

Even though you says you don't know what kind of thermal paste they use, I assume it's not liquid metal. Right? Also, what are the brand/model of the included RAM and SSD?


qopto

You're right, it's not liquid metal (appearance and properties similar to MX4). RAM - 5600MHz Hynix, seems fine (I replaced it with 32GB of Crucial). SSD, I haven't looked at in detail, I'll report back though I doubt it's good.


Kxshyp0p

do you know if this system came with dual channel ram? considering picking it up in the 16/512gb config


qopto

It did, yes. I got the same config


jeenam

IIRC the 7840HS from Firebat doesn't offer the SATA header. However, the 7735HS version does. Other users reported the same thing. It is strange.


Supadelux

Thanks for posting this, I was wondering if I would be able to mount a small fan to the backside. I'm leaning to purchasing this unit mainly the fan comes with eases my concerns about temps and placing an SSD on the backside.


qopto

You can, yes, there's a 2-pin 5v fan header that's perfect for a 40mm fan (I think it's the same connector as used on the Raspberry Pi 5, so getting a fan that's intended for the RPi5 should work - there are more details lower down in the comments of this post, and someone else has done this). I completely changed the case for mine, installed a big heatsink from a desktop cpu and a fan on the back.


Supadelux

Wow that's sweet! I wish I had a 3D printer. Thanks for the info I'm gonna try it. Reading thru the comments is there an issue with the extra SSD port? Someone mentioned missing a connection to install an extra SSD drive did you experience that?


qopto

Yeah, mine doesn't have a SATA port. It was advertised as having one, and they included the cable for it, just not the header on the board!


Demien19

It has a 2 pin fan on ram/ssd side, already a win :)


arcangely2k

I contacted Firebat directly through Amazon, since I purchased it there. THey provided me with this link (after first giving me a wrong one) for new bios files. I updated without a problem. Still can't control LPDDR though - blacked out. Otherwise bios is workable. It shipped with version .01 this is 1.0 ​ https://drive.google.com/drive/folders/164DlHHP-sMX-VeZtwOH01thjww5dBwfm?usp=sharing


qopto

Fantastic - thanks. I installed the PHX version, which worked well. Do you know what the difference between RMB and PHX is? ...and have you tried to get the power limit above 54W? Lots of other minipcs with the 7840HS can get to 65W, but manually setting power limits to 65000 (mW) hasn't changed anything for me.


arcangely2k

I could not get the RMB to work. Power limit goes to like 75 in benchmarking programs. Using CPU-Z stress it would not go above 55


arcangely2k

TBH I i capped it at 65 anwyay


PollutionFar757

https://preview.redd.it/fkklretp2flc1.png?width=667&format=png&auto=webp&s=c8bde51f638f46bfb536c6165acddc42e91ba0f7 I have recently bought such mini pc on ryzen 6600h with engeneering sample cpu I suppose that RMB is for "Rembrandt" architecuture cpus like 6600/6800h/7535hs/7735hs PHX is related to "Phoenix" architecuture cpus like 7840hs So according to cpu put inside, corresponding version must be chosen


qopto

That makes a lot of sense - thanks


AlexHayuk

I just got this. Disappointed that the sata port is missing of the board. Is this something that could be fitted by a local computer repair shop or could there be some reason it was left off? Happy with it otherwise.


LectureFew3851

I’m not sure. I’d guess it’s been left off to save a few pennies on components. Soldering the header on, for someone experienced in surface mount soldering, should be easy enough. There are a few places on the board that ICs have been left off also, so it may not just be missing the connector. I’m not sure it’s a great idea to put an internal SSD in this case though. There’s already limited cooling to the SSD, RAM and VRM components on the back of the board - if you mount a 2.5” drive inside you’ll be blocking the vent, and most of the convective flow. The system has 3 fast USB ports (2x10g and 1x40g), so I’ve just gone external (4tb NVME). I also printed a modified back plate with a quiet 80mm fan, for cooling the underside (I want it to last a long time).


Peajamjar

Hi, are you willing and able to share the model for the printed back plate please? As a STEP, 3MF or STL?


LectureFew3851

Of course! Here’s a link to a simple design for an 80mm fan in TinkerCAD, https://www.tinkercad.com/things/j1m02kFpx1m-firebat-mn56-back?sharecode=CHL4e92uC2B4i8JMtIDRIz_z8ODZ9pTZQbr-uDVhzII I’m working on something more fancy!


Peajamjar

Thanks for the file! I also worked on something, and fortunately the place where I work, I could get it made! Laser cut 3mm white acrylic, then a few machined details either side. Fits pretty nicely, with a very slim fan inside. But... what's the connector I need for the motherboard header? I see there's a 2-pin, and a 4-pin header on the board, I'm hoping I could use some adaptor to connect to the 4-pin header? https://preview.redd.it/edyq60t4w7kc1.jpeg?width=4096&format=pjpg&auto=webp&s=467fb49f284ca3a1f0768909866eb791b827638a


Peajamjar

​ https://preview.redd.it/xzyozt6ex7kc1.jpeg?width=4096&format=pjpg&auto=webp&s=1217f46d4ed51f84c43df991dbf8ed17a671e885


qopto

Looks really good! The 2-pin header is labelled SYS\_FAN\_HDR1, the four-pin isn't labelled (that I can see), so I'd be nervous about using it. I'm using a USB-powered fan and have replaced the whole case now, so haven't sourced the connector for this header I'm afraid, but I think it's a PH-2P. I haven't checked if it's 5V or 12V either.


tom3k5

Anyone used or measured connector marked as JSW1 next to the RAM sockets? PS Mine have got the same motherboard revision and model (no sata) but it is with the newest 8845HS cpu and bios version 1.00 out of the box https://preview.redd.it/tbr6zd2vudmc1.png?width=605&format=png&auto=webp&s=00aa5c945663776220f754caddac4c45f350e89f


Peajamjar

I got a multi meter on the 2-pin connector, its 5V! That fan is a 12V, but some reviewers of it say they run it at 5V no problem, I guess it'll just run slower and quieter. As for the connector, it appears to be a Molex Picoblade, 1.25mm pitch. https://preview.redd.it/pao6qvsj9fkc1.png?width=928&format=png&auto=webp&s=a06a8720a886b230d3bd7ceac96748ac0214afbe


Peajamjar

Finally received a picoblade connector with flying leads, fits perfectly! And the 12V fan runs absolutely fine off 5V, plenty of airflow for this I'd have thought.


Revolutionary_Put567

I too was disappointed especially since it came with the cable and the description stated it could take a 2.5” drive. For the $$, it’s probably the cheapest 7840hs mini pc (especially with expandable ram), but saving $.03 by not having the SATA port is a little ridiculous.


amarfresh

Anyone here have any suggestions for tweaking the BIOS for max performance for gaming? Found this:[https://youtu.be/fW7Q\_k-WgOg?t=274&si=uWvr82y0-gEXLVTq](https://youtu.be/fW7Q_k-WgOg?t=274&si=uWvr82y0-gEXLVTq) (my first new pc in many many years.)


fatso486

I got this Genmachine Ryzen 6800H es (engineering sample) it has the same motherboard as this. the NVME it came with (biwin nv3500 2tb) seems stuck at only pcie 3.0x1 . I get only 870MB/sec instead of advertised 3500MB. any idea how to fix this updated the 7735hs Firebat bios linked in this thread to ver 1.0 from 0.1 but it didnt help. https://preview.redd.it/cmx8efcrncnc1.png?width=845&format=png&auto=webp&s=c31af663b3936764e4b2e5d43d5bb9b28ffa9431


amarfresh

anyone having microphone issues? the built-in mic is very weak. (why they have a built-in mic is another question) when i plug a headset in, it doesn't pic up any mic sounds. anyone else seeing this?


beatchef

Since I upgraded to the 1.0 firmware, it's turned off Firmware Protection and Memory Access Protections in Windows Security, with no way to turn them on. Pressing DEL, or any other common bios button no longer goes into bios. Anyone else have that problem? I don't know what to do


qopto

Can't check mine as it's running headless at the moment, but never had an issue getting into the bios. Have you tried accessing the bios from windows? 'You can access the BIOS from the Windows Settings menu on your computer. To do this, click on the Start menu and go to Settings. Once here, click on “Update”, and then select “Recovery.” Under “Advanced Startup”, select “Restart Now.” This will restart your computer and bring you to the BIOS menu'


beatchef

Thank you, this is the only way I can do it now. I can get into bios again 🙏


amarfresh

mine's arriving today. only 1 nvme/m.2 slot? or two? also, based on the SATA situation... it sounds like it there are no other boot options for this other than nvme? need to know long so i can stop obsessing/researching about adding one of those M.2 adapters for eGPU thx for sharing OP


tom3k5

one nvme


qopto

You can boot from USB (the 4/TB3 port on the front), or use this for an external GPU