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Using Alcatel TCL A3 and TCL A3X Smartphones for VerusCoin (VRSC) Mining

25, Oct 2023

Time for another look at budget smartphones that could be used for crypto currency mining such as VerusCoin (VRSC). We are going to check if the Alcatel TCL A3 and Alcatel TCL A3X smartphones are any good for mining VerusCoin. Both the TCL A3 and TCL A3X are available at a really good price point, especially when looking at operator locked phone prices, making them an ideal option for use as crypto miners. The big question however is if the current price point of about $40 USD (for operator locked devices) is worth it for these devices when you take a look at the mining performance they offer in return and this is precisely what we are going to be checking out now. And as you might’ve noticed already from some of our earlier posts, some cheaper and some even not so budget smartphones are not suitable for mining usage at all due to specific software configuration of the OS (running in 32-bit mode) even if the hardware inside is 64-bit capable, so, another thing to check with these devices as well…

The Alcatel TCL A3 was released in 2011 and comes with Android 11 (even after like 20 system software updates you are still on Android 11), it is powered by Mediatek MT6762 Helio P22 (12 nm) chipset that uses an octa-core 2.0 GHz Cortex-A53 (8-core A53 CPU, 64-bit), has 3GB RAM and a removable back cover and removable 3000 mAh battery (rarely seen nowadays). It uses the older micro-USB connector for power and data transfer, but the package from Total by Verizon we got (Tracfone inside) had not only a data cable, but power adapter included as well. A really good deal price wise that you can get with Total by Verizon TCL A3, 32GB, Black – Prepaid Smartphone (Locked) at $39.88 USD from Amazon currently (limited quantity and up to 2 devices per order).

The Alcatel TCL A3X is very similar, also released in 2011 with Android 11, powered by Snapdragon 460 (11 nm) chipset with an 8-core 1.8 GHz Kryo 240 CPU, 3GB RAM and non-removable back cover and a fixed 3500 mAh battery. The A3X seems to be just a slightly improved version of the A3 model that should also offer a bit of a performance improvement as well. It doesn’t feature a removable back cover or battery, not that it matters much as the phone won’t power on without a battery anyway (the A3 that is). The TCL A3X also comes with a micro-USB connector for power and data transfer and has not only data cable, but power adapter inside the package from Tracfone we got. The list price of that one is usually $79.99 USD, but it is currently available for half that or even less. A really good deal price wise that you can get with Tracfone Alcatel TCL A3X, 32GB, Prime Black – Prepaid Smartphone (Locked) at $39.88 USD from Amazon currently (up to 2 devices per order) and there is even a 20% discount coupon bringing down the price to just $31.90 USD at the moment!

So, the price for the Alcatel TCL A3 is really good, even better with the deal on the Alcatel TCL A3X that comes cheaper at the moment and should be slightly better in terms of performance. The only bit of a drawback, no USB-C cables, but older micro-USB, though that is not a deal breaker here considering that both devices do come with the cable and even a charger in the package. They both have 8-core 64-bit CPUs – two different chipsets that should have similar performance, and fortunately they both do come with Android OS running in 64-bit mode, so, yes, you can run the VerusCoin (VRSC) mining software on these as well as other mobile miners. Even though they do not have OS updates past Android 11 they still run perfectly fine with it for mining purposes, so you are good to go. Here you can find more about the situation with 32-bit Android OS and why it is important to have not only 64-bit CPU, but also an operating system like fortunately it is on the TCL A3 and A3X.

What about mining performance then, now, that we know they are good to go for mining VRSC using the ccminer miner. Well, a very pleasant surprise here – the hashrate you can expect is very similar to the one of the popular mining option that is the Samsung Galaxy A03s. The Alcatel TCL A3 (left) does manage to provide a stable VRSC mining hashrate of around 3650 KH/s (3.65 MH/s) with a power usage of about 3.2 Watts measured at the wall. The Alcatel TCL A3X (right), as expected, performs slightly better with a VRSC mining hashrate of about 3865 KH/s (3.86 MH/s) with a power usage of about 2.7 Watts measured at the wall, meaning better efficiency as well. The bit higher performance of the TCL A3X might not be worth with the regular list price, but with the current promotional price making it cheaper than the TCL A3 makes it the clear winner here. If you miss the current deal and if you only find a locked model at the regular list price, then the TCL A3 is definitely more attractive choice for half the regular price of the A3X with just a bit lower performance and slightly higher power usage.

Is BLU View 2 a Good Smartphone for Crypto Mining – Unfortunately No

23, Oct 2023

If you are looking for a good deal on a smartphone that you can use for crypto mining a coin such as VerusCoin (VRSC) then you might’ve stumbled on a really great looking, price-wise at least, offer for the Total by Verizon BLU View 2, 32GB, Black – Prepaid Smartphone (Locked) for just $29.99 USD (Ad). The offer at that price for the BLU View 2 (Tracfone inside) locked for Verizon does seem very good after a quick look at the specifications of the device as listed on Amazon’s website, so good, that in fact you will probably be tempted getting one just like we did. A 5.5-inch smartphone with 32GB internal memory (expandable via micro-SD card), 3000 mAh removable battery, 3GB RAM, 2.0 GHz Octa-Core CPU, 64 Bit, USB-C connector and even a charger included and that for just 30 bucks, seems like a very sweet deal mind you that it is locked even though you should not care if you are going to use it for mining only.

A qucik look at the smartphone’s specs over at GSM Arena confirms that the processor should be an “Octa-core 2.0 GHz Cortex-A53” (8-core), even though there is a bit of discrepancy there saying 2GB of RAM only and not 3 GB as Amazon’s description mentions. There is however a tiny bit of a problem here, both the product page of Total by Verizon on Amazon and GSM Arena’s specifications of this device are wrong as it turns out that Mediatek MT6761 Helio A22 (12 nm) chipset used in this device is actually only a quad-core CPU and not an octa-core as both websites claim and we actually had verified that personally after ordering one of these smartphones expecting it to do great for mining VRSC with it. You can always make a mistake, but when the mistake is multiplied it gets confusing even for people that usually double-check things…

Not that it is such a big issue when you can easily return the smartphone for a refund, but what remains is the disappointment from something that might’ve been a great deal ending as just a simple mistake and the BLU View 2 had the potential if it was really with an 8-core CPU. However, not only that it is a quad-core A53 ARM CPU inside, but the Architecture reported is armv7l and that is the second huge disappointment here essentially making this device unsuitable at all for crypto mining as even with a decent 4-core 64-bit CPU you should be getting decent hashrate… or at least be able to run the mining software. Essentially, while the CPU itself should be 64-bit, the operating system (Android 11) comes with a 32-bit kernel, so you are not able to run 64-bit applications and most miners (at least the ones that are worth using) do require both 64-bit CPU hardware as well as 64-bit operating system to properly install and run and in order to provide you with a decent hashrate while mining.

The situation with the 32-bit software here is very similar to what we have seen with the Verizon Samsung Galaxy A13 5G that is also a no go for crypto mining. And while the BLU View 2 is much more budget option, with a bit older and lower-end hardware and with a 4-core processor apparently, here the 32-bit software won’t come as that much of a surprise like it is on the A13 5G from Samsung that we really did not expect to come with 32-bit Android support only. Anyway, the BLU View 2 comes very attractively priced (the locked model), but is not such a great deal with the wrong specifications listed and considering the correct ones and the fact it is with a 32-bit Android 11 operating system. It is indeed with a 4-core ARM CPU, 2GB of RAM and a 32-bit Android OS. The result is essentially an unusable device for crypto mining!

Optimizing the Cooling of Orange Pi 5 for Mining VerusCoin (VRSC)

22, Oct 2023

If you are considering using an Orange Pi 5 for Mining VerusCoin (VRSC) (Ad) one thing you should have for sure is an additional cooling solution like the GeeekPi Orange Pi 5/5B Cooling Fan with Heatsink, however although good and working well this solution is far from optimal and can benefit from some additional tweaking. The main thing that you can improve is the heat transfer efficiency since the default thermal transfer material that sits in between the CPU and the cooler is a pretty thick thermal pad. Thicker thermal pads are not that efficient, however with a big gap you cannot replace a pad with just thermal paste so you need another solution here…

What you need is a solid copper thermal pad to replace the pink thermal interface that the cooler kit comes with. There are a lot of different copper pads available both in terms of size and in terms of thickness. The ideal width and height would be 18 by 18 millimetres, though there are harder to find and you can go with 15 mm or 20 mm just fine as you can see on the photo above, we went for the bigger one as it covers a larger area. The more important thing here is the thickness and what worked out very well for us is a 1.2 mm thick copper pad (Ad), though you could probably use 1 mm or 1.5 mm as well and compensate with more or less thermal compound. Good thermal compound that we like to use is ARCTIC MX-4 Thermal Compound (8 g) (Ad), though you can use anything else that has good capabilities and you may have lying around already.

The average temperature with the active cooler installed with the default flexible thermal interface pad we have observed was around 65-67 degrees Celsius while mining VerusCoin (VRSC) or around 40 without 100% load. Without the active cooler installed the temperature quickly hits 85 degrees Celsius when the miner is started, so the cooler is doing quite a good job in reducing that operating temperature, however it is still higher than we would like to be for a device running 24/7 mining crypto currencies.

As for the hashrate, a little below 6.6 MH/s average hashrate with a power consumption of about 9 Watts measured at the wall. This is again the result with the active cooler installed with the default flexible thermal interface pad, but as we’ve mentioned things can be improved by replacing the flexible thermal interface pad with a solid copper pad and good thermal compound… the question is how much of an improvement will that bring.

In terms of operating temperature, quite a significant improvement when we add the 20×20 mm copper pad with thickness of 1.2 mm and MX4 thermal compound in between… there is more than 20 degrees Celsius drop in the operating temperature. The newly measured stable operating temperature of the CPU of the Orange Pi 5 with the copper pad is now around 43.5 degrees Celsius, just a little bit higher than the Pi 5 with no active cooling and no load. You can hardly get any lower than that probably with conventional air cooling and you probably would not want to do it anyway as that operating temperature is really what we are more than fine with while mining.

After replacing the flexible thermal pad with a copper pad, we are seeing a slight increase in the average hashrate produced of a little over 100 KH/s to about 6.7 MH/s which might not be that much but is still somewhat of an improvement. There is also a slight drop of the power usage, we’ve measured 8.8 Watts at the wall down from 9 Watts before, so 0.2 Watts decrease in power usage. Again, might not be much but is still something that if you put in a large-scale perspective might build up to more significant numbers over time. The main goal was to lower the operating temperature while mining, but it has led to some other slight improvements as well, so a good job doing this little bit of modification to improve things overall. So, if you have an Orange Pi 5 or a few and if you are using them for mining VRSC or for other things that actually do require more processing power you might consider doing this modification for the cooling as well.

– For a guide on setting up and using Orange Pi 5 for mining verusCoin (VRSC)…


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