The Best 7840HS Mini PC is Here! Beelink SER7 7840HS Review 

Thank you!

Well a ranking now I what doesn't randomly power off and reboot. This and the UM790 are the only ones the GMKtek and GTR 7 Pro all randomly crashing out after pushing them hard.

@@Techtablets Yeah, I own the UM790 and wasn't sure what you were referring to.. no random crashes after the GPU driver update arrived!

​@@Techtablets So reboots are due to thermals🤔or there's something else?

​@@Techtablets do you know how to write

Great to hear! I will ask Beelink for one lately they haven't been sending me units and I can no longer buy mini pcs to review due to how bad adsense is nowadays.

Glad you enjoyed it

Should work for that.

This and the UM790 Pro have been good for me. All lthe other 7X40 series ones I have tested ended up rebooting or powering off. I hoep to havethe UM780 XTX soon with eGPU support via oculink.

@@Techtablets I heard the UM790 Pro has horrible WiFi. Can this be fixed w/ a usb WiFi adapter?

​@@tnargrantyou can change wifi card to another m2 card without issues.

what did you decide on?

Hi, I updated to the latest drivers off AMD's website I always do this as the included driver is a little dated. The Ryzen 7X40HS series has been plagued with issues across all the brands and I think it's down to some of the unit's bad RAM (according to some) and just being rushed out plus AMD has had DDR5 RAM stability issues at 5600mhz but fine at 5200Mhz. This and the UM790 Pro are the only two units that have not had random reboots or powering off. It was so frustrating with my Beelink GTR7 I gave up in the end and sold it off for half the price as it was faulty, Beelink later did offer to replace it but it was gone. This unit is the most stable of them yet. Next up I hope to review the UM790 ITX with oculink.

Hi yes to both counts. I've reviewed plenty of these new Ryzen Mini PC's with the AX211 it works with our without intel chipsets. And yes the 990 Pro will work but the heatsink I've not seen how big it is for the fit.

Thank you for your answer, the height of the 990 Pro with the heatsink is Max 8.2 (mm). I will try it when I have the SER7 in my hands and report back. @@Techtablets

Okay let us know, thanks!

Hi Chris so I can finally confirm that the 990 Pro (or any NVME drive) can only be installed without the heatsink in both primary and secondary positions. Secondly on AMD platforms only AX210 is supported for WIFI6e and BT5.3. The AX211 is only for Intel platforms due to CNVi2 (some elements are on the Intel platform motherboard)@@Techtablets

The 780 XTX Is one of the best, very good cooling and fan noise on my model reviewed but I did read they have some units with different fans.

UM790 is my pick I've had no issues with my one. But with that video editing is it in 4k? I still think video editing you need a dedicated video card if it's 4k and long videos. I was editing my reviews on it but it started to lag a little with larger 14 minute reviews and chocked with camera camera comparisons which are 3 x 4k videos at once.

@@TechtabletsThank you for your reply. About video encoding, I just encode some of my DVD sometimes. So that's not 4K but usually 1080p most of the time. It's not my main activity on a PC as I said in my first post :) I also work much more on Linux (arch distro) rather than on Windows. I forgot to mention that I also work on music edition. Which mini PC is the quietest ? Regards.

Hello, I finally received my Minisforum UM790 Pro yesterday. Well, it’s a very nice and powerful mini PC. Linux and Windows work well. But I was very unhappy when I connected my Motu M4 USB sound card. There was a persistent loud noise in the speakers with or without sound. I tried all USB ports, including USB C. When the PC shuts down, there is a big click in the speakers. Nothing like this has ever happened when the sound card is connected to my desktop computer. This is likely due to a faulty PC or power unit or a bad filtered PSU, so I returned it today with great regret. I failed to solve this unpleasant problem. Now I hesitate to buy the SER7 for fear of having the same problems.

Hello again with great news !! As I really wanted the UM790 Pro, I reordered one and I've solved my ground loop problem with my USB sound card ! I simply made an electric cable without the ground connected, and it works like a charm :) Really great and I'm very happy to be able to use this wonderful machine. I hope this can help people who have such a problem. Regards.

There is some fan noise yes.

Great your experience has been as good as.mine so no issues. Yes fantastic mini PC

Thanks!

You got lucky my GTR 7 Pro never fixed 100% from the latest bios. Maybe bad RAM I think overheating of the memory sticks was to blame. Now this unit is fine no issues.

And yet it was not every unit, so far so good here non pro GTR7. I suspect it was never an over heating issue because those who looked into it on the official forum found it was a memory power states issue. Someone fixed it by upgrading on stick to 64gb others while using linux and changing the memory power states something the bios should have added but they wont add it in.

@@_GarethRossUKYeah I saw that, bad memory traces on the MB can cause random reboots, but so can power state changes for the m.2 or PCIe devices. My desktop and work laptops experienced lots of random reboots until I halted power management and hibernation for M.2 and PCI devices. I've asked people who were experiencing the random reboots on the forums to try making changes to sleep, power & hibernation but not seen any response yet. M.2 devices really don't like changing power states.

Yes works fine with my type-c to HDMI cable and at 4k120hz

Yes still great performance far cheaper than these new 7X40HS mini pcs. It's bound to drop in price.

​@@TechtabletsI know right?, plus with AMD new FSR3 releasing soon, 6900HX could be best for valued Gaming mini pc

@@Bilal.Hussain.Shaikh I will be, but I also want to see the new iGPU's from Intel later this year or Q1 2024. Should be very interesting then who as the best iGPU.

@@Techtablets oooh me too, especially I heard rumours about intel arc GPU low profile on a mini pc, same size as you did in current mini PC vīdeo

Now that would be great to have!

It was a poor move from them and they know it now.

Use the display port.

Display Port works just fine and you can buy a Display Port to HDMI cable in case your screen doesn't have Display Port.

Yes below due to the clock difference between the 7940HS Vs 7840HS.

Yes, I have a SER7 + LG C3 OLED and I can confirm it works. However, on Linux there's no way to output 4k @ 120 Hz with 4:4:4 via HDMI -- it works on Windows perfectly though. This is not a limitation of this specific computer, but a legal battle between AMD and HDMI consortium when on Linux. You can workaround this issue by using a Display Port 1.4 to HDMI 2.1 cable, which is exactly what I'm doing at the moment.

No 5600 max. You can't overclock the ram either

Hi, it should come with Windows 11.

I ended up using a usb extension to put the logitech usb receiver in direct site. This was the only way I could get no lag.

@@neoturfmasterMVS Yeah, this is a weird issue. I wonder if there is a proper fix.

Hi I have had that issue aswell, My daughter's computer U59 does the same with different brands of Wireless Keyboard/mouse sets, had to switch to wired. But it is not a Beelink thing as I had the same problem also with a DELL

Google search the following PDF and check out the summary on the page no. 21： USB 3.0 Radio Frequency Interference Impact on 2.4 GHz Wireless Devices

White paper from Intel： The noise generated due to the USB 3.0 data spectrum can have an impact on radio receivers whose antenna is placed close to a USB 3.0 device and/or USB 3.0 connector. The noise is a broadband noise that cannot be filtered out, since it falls within the band of operation of the wireless device (2.4-2.5 GHz). The noise degrades the signal-to-noise ratio that the wireless receiver sees and limits its sensitivity. This then reduces the operating wireless range of the device. Improving the shielding on the USB 3.0 receptacle connector can help reduce the amount of noise radiated due to USB 3.0 signaling. In addition, shielding of the USB 3.0 peripheral device plays an important role in reducing the amount of noise radiated in the 2.4-2.5 GHz range. This is particularly critical for peripheral devices that are placed close to the PC platform, such as a flash drive. Placement of the wireless antenna should also be carefully considered on a platform and be located as far away as possible from a USB 3.0 connector and/or device.

Yes via Thunderbolt enclosures.

It would be yes.

@@Techtablets Cheers for the reply! I will have to pick one up then.

Consider a Sabrent or Orico 4-6 drive bay. It has it's own power and connects via USB-C.

The only way is external bay for you via USB.

External storage is not really an option for me, as I cannot sync my 5TB Onedrive on ejectable storage...

Geekom has 2.5 sata bays. Hope he reviews some of those.

@@BrianGarside I bought a Morefine M600 with that drive. Came with a 512GB Pcie4 SSD, added another 4TB one and a 8TB 2.5 one (bought for $290). I just had to add a bluetooth dongle, since the Sata drive interfers with bluetooth. Other than that I am very happy, totally silent

Not sure right now 699 USD ?

@@Techtablets ok thanks 🙏

Oh I didn't add it maybe later on I will :) Just reviewing it not selling it.

Can you test something for me? Check if the M.2 is over heating with "Hardware Monitor" or "Crystal Disk Info" also set the device not to sleep, hibernate or to go into low power. Control Panel > Power - Turn sleep off and under advanced turn PCI power management off. In PowerShell disable hibernation - powercfg -h off Reason being even on my desktop if the system goes into sleep, changes the M.2 power state or PCI power the pc reboots.

Those tips there should fix it.

Odd because my UM790 has been great no issues at all no random reboots or instability. Bios 1.01 out of the box.

@@Techtablets My um790pro had prob with the fan control and it went full blast as soon as i hit the power button. For the short time I had it, it did not reboot though (I had the barebone version with a fresh win11pro from win media creator)

And yet the reviews are a cut above the rest 😛

Haha good one! 😅😅😅

Beelink isn't no brand, non branded, unbranded, generic. Beelink has been around for well over a decade if not longer. And all credit to Beelink the customer support / services for replacement during warranty from what I've heard is very good. I've purchased the Teclast T6 Pro based on Chris review and another mini pc both have seen a lot of use sometimes all day and night no issues just minor nigles but nothing breaking. Infact this Teclast is lasting longer than any HP that I've had before those one drop and something would break. This teclast T6 has hit the floor a few times and nothing broke. It's all about knowing which brands to stick too. To brush it all with the same brush isn't fair at all.

Yes that's why I stopped buying and testing the Aliexpress ones always issues.

@@_GarethRossUK had numerous issues with their product as well. I agree with the commentor, Beelink isn't the best or reliable.

@@FraZzJ Yes as mentioned in the video I have to, so it's nice to see this model working as intended no issues over 6 days now pushing it hard.