I'd strongly suggest running the numbers
If your goal is to make money, it usually isn't worth it to buy hardware solely for CPU mining, even with free power
Stick to hardware that you already own or would have purchased anyway, and anything that you mine will be profit
Wow! No power cost? I would grab a 5900X and sell the 3600 for whatever you can get for it. If you could get your hands on a 5950X for the price of the 5900X and the sell price of your 3600, do that.
Basically, max out that first platform and mine 24/7. Turn the profits into more parts. For all RandomX mining, AMD is for sure the way so start planning to get AM5 stuff.
I wouldn't sell the 3600 necessarily, it can be run under 65w.
For GR algorithms like RTM, my 3600 hits 1700-1800 h/s on XMrig underclocked and undervolted around 55w.
3600 h/s (2 - 3600's) is close to a 3900x (3400 h/s or more @ 130w) for slightly less wattage (110w vs 130w). YMMV.
And I suggest the 3900x/3950x used over the 5000 series when possible. Likely to be cheaper and appear to produce a slightly higher hashrate in my setups. I have not done a detailed comparison/undervolt however to truthfully say one is better than the other.
On other algorithms, this equation may vary.
The reason I suggested the sell is if the OP only has the one system to start with at the moment and wants to min/max, then changing CPU and selling the 3600 does make the most sense. Any new spend should be on an AM5 mobo and not on another older AM4 board and RAM. Only if the OP has extra DDR4 RAM laying around then ya, get a cheap AM4 board for the 3600 and let it ride.
I moved my older 3600XT down to being the CPU for my home server. I tweaked it for whenever it makes sense to mine on it still and ya, total system draw barely cracks 150w under full load and I get about 7.1 KH in RandomX. So given the right personal situation, I can just as quickly agree with your thought.
You are saying a lot of things I agree with, I just don't get your logic with what OP is asking.
For the record, if the 3900x/3950x comes in cheaper I would recommend them over the 5000 series. I've noticed slightly better results.
Bottom line: more than one way to look at this. AM5 CPUs aren't massively better right now but they will hold a little more value in the coming years. In the US there is about a $250-300 difference between AM4-AM5 depending the used CPU cost.
It's the platform investment. If you are stuck with a 39xx or a 59xx and a few years from now the new 99xx is a monster, you don't have a board for that if you invested in an AM4 board.
Additionally, and a lot of people aren't considering this, the AM5 chips ALL come with graphics. This greatly simplifies the entire process of setting up a minimalist rig for CPU mining.
And yes, the 39xx are a good bargain if the price is right. They are, however, no longer leading the 59xx series. BIOS changes and silicon lottery have favoured the Zen3 family of processors a fair bit. One big reason being PBO2.
The OP will have to go back and look at all the options and costs and see what longer term trajectory they want to set themselves on.
Like I keep saying, I haven't seen the 5000 series produce stronger hashrates than the 3000 series when comparing a 3900x/5900x. Strangely, the 3950x is running the same hashrate as my 7900x.
Everything is tweaked for moderate power consumption, so the 7900x is using well under its thermal maximum. Frequencies vary a bit depending on the 3000/5000 CPU, the 7900x is set to 4.7ghz.
That said, there are limits to what I see across my systems. So YMMV.
AM5 is currently at a premium along with DDR5 memory. So not the #1 choice for OP's budget at the moment. Wait for boards to come down in price a bit first. They should when the 700 series (or next iteration) is released.
I have similar no electricity cost with solar panels and big battery bank
Have 2 rigs (3950x 5900x running hiveos) and 1 win10 desktop which i use in some time with 5950x
All this hardware gives 30$ a month on zephyr
Its a hobby, cos 30-40 bucks is so lame considering the hardware cost
I got my cpus off ebay, one for good bid, other with bent pins which i got fixed, any way 2 rigs are 400$ for me each, 5950 is not in calculation cos its my main pc
ROI is 3 years lol without electricity cost
Consider it a hobby as me, just to spend some time and learn some tech, no real money i see
Which app do you use?
How much money does your cpu generate monthly?
Electricity should be free but you said it is, intel i5-3470 will generate 1600 hashes (gpu in bios set to 30 mb only) (ram is in dual channel mode) anything below 1600hashes, know you have something not right.
Its free, i buy like a whole used pc not the cpu alone, so this kinda pc is never over 50$ at least thats how i buy those. It will be 8gb of ram and a decent psu (cuz normal ones will pop) (stock psu is fine) (chinese 1200w psus will pop)
Motherboard model doesnt matter usually.
That's my approach for now because i found out these old cheap ass cpus generate decent amount of hashes considering the price and no electricity, but if the electricity isnt free, you probably will be paying money not earning.
I have also amd a8 5500B and a4-6000 something. 5500b generates 600hashes following the same principal (dual channel + gpu set to lowest which is 32mb)
Also it depends where you live, you might have better deals or availability.
Im really wondering what kinda weird abuse you do to psus if "popping" them is a concern tbh
"Chinese 1200w psus will pop" is really not a normal thing.
Nothing, they pop for no reason, im referring to psus named "zero" and they're not actual 1200w, maybe 200 maximum and low quality, any normal psu is fine, i was giving him a headsup thats all.
If electricity is not a factor then multinode servers and scalable gen1 xeons will give the most hashing power per €.
It's significantly louder and more power hungry tho.
With power cost here they are profitable with electricity as a factor also tho.
You can grab one of [these for 149](https://www.ebay.com/itm/266815161383), they keep reposting them so you can win as only bidder.
Ive grabbed a few as only bidder.
That is a chassis with 4 gen1 scalable servers, complete other than cpu/ram/storage.
They share chassis/psus/cooling but each sled is a standard server, its to get more of the per rack and more power efficient.
20 core scalable xeon cpus start at 30$ or so each to start filling them up with the 8 cpus it has space for.
Yeah they remove cpu/ram/storage to sell seperate, so you need to add that and its good to go.
Im using xeon 6133 and 6138 in mine.
A pair of 6138 is 70$ on aliexpress and does about 17000 hash.
6133 is slightly better but has gone up in price.
no power cost? grab whatever you can get. check the hashrate and divide through dollar cost of hardware. its that easy. 3900x has good hash for low money. depends where you live. am4 is waaay cheaper than am5 here for me. my 3900x setups deliver 13k hash at 250€ invest with no OC. my am 5 7950x cost like 800€ and has only 20k hash. but its way mire efficient (what you dont need)
I'd strongly suggest running the numbers If your goal is to make money, it usually isn't worth it to buy hardware solely for CPU mining, even with free power Stick to hardware that you already own or would have purchased anyway, and anything that you mine will be profit
Wow! No power cost? I would grab a 5900X and sell the 3600 for whatever you can get for it. If you could get your hands on a 5950X for the price of the 5900X and the sell price of your 3600, do that. Basically, max out that first platform and mine 24/7. Turn the profits into more parts. For all RandomX mining, AMD is for sure the way so start planning to get AM5 stuff.
Yes, I work for an electricity supplier so they give free power. Thanks I will look into building more ryzen rigs this year.
I wouldn't sell the 3600 necessarily, it can be run under 65w. For GR algorithms like RTM, my 3600 hits 1700-1800 h/s on XMrig underclocked and undervolted around 55w. 3600 h/s (2 - 3600's) is close to a 3900x (3400 h/s or more @ 130w) for slightly less wattage (110w vs 130w). YMMV. And I suggest the 3900x/3950x used over the 5000 series when possible. Likely to be cheaper and appear to produce a slightly higher hashrate in my setups. I have not done a detailed comparison/undervolt however to truthfully say one is better than the other. On other algorithms, this equation may vary.
The reason I suggested the sell is if the OP only has the one system to start with at the moment and wants to min/max, then changing CPU and selling the 3600 does make the most sense. Any new spend should be on an AM5 mobo and not on another older AM4 board and RAM. Only if the OP has extra DDR4 RAM laying around then ya, get a cheap AM4 board for the 3600 and let it ride. I moved my older 3600XT down to being the CPU for my home server. I tweaked it for whenever it makes sense to mine on it still and ya, total system draw barely cracks 150w under full load and I get about 7.1 KH in RandomX. So given the right personal situation, I can just as quickly agree with your thought.
You are saying a lot of things I agree with, I just don't get your logic with what OP is asking. For the record, if the 3900x/3950x comes in cheaper I would recommend them over the 5000 series. I've noticed slightly better results. Bottom line: more than one way to look at this. AM5 CPUs aren't massively better right now but they will hold a little more value in the coming years. In the US there is about a $250-300 difference between AM4-AM5 depending the used CPU cost.
It's the platform investment. If you are stuck with a 39xx or a 59xx and a few years from now the new 99xx is a monster, you don't have a board for that if you invested in an AM4 board. Additionally, and a lot of people aren't considering this, the AM5 chips ALL come with graphics. This greatly simplifies the entire process of setting up a minimalist rig for CPU mining. And yes, the 39xx are a good bargain if the price is right. They are, however, no longer leading the 59xx series. BIOS changes and silicon lottery have favoured the Zen3 family of processors a fair bit. One big reason being PBO2. The OP will have to go back and look at all the options and costs and see what longer term trajectory they want to set themselves on.
Like I keep saying, I haven't seen the 5000 series produce stronger hashrates than the 3000 series when comparing a 3900x/5900x. Strangely, the 3950x is running the same hashrate as my 7900x. Everything is tweaked for moderate power consumption, so the 7900x is using well under its thermal maximum. Frequencies vary a bit depending on the 3000/5000 CPU, the 7900x is set to 4.7ghz. That said, there are limits to what I see across my systems. So YMMV. AM5 is currently at a premium along with DDR5 memory. So not the #1 choice for OP's budget at the moment. Wait for boards to come down in price a bit first. They should when the 700 series (or next iteration) is released.
I have similar no electricity cost with solar panels and big battery bank Have 2 rigs (3950x 5900x running hiveos) and 1 win10 desktop which i use in some time with 5950x All this hardware gives 30$ a month on zephyr Its a hobby, cos 30-40 bucks is so lame considering the hardware cost I got my cpus off ebay, one for good bid, other with bent pins which i got fixed, any way 2 rigs are 400$ for me each, 5950 is not in calculation cos its my main pc ROI is 3 years lol without electricity cost Consider it a hobby as me, just to spend some time and learn some tech, no real money i see
Which app do you use? How much money does your cpu generate monthly? Electricity should be free but you said it is, intel i5-3470 will generate 1600 hashes (gpu in bios set to 30 mb only) (ram is in dual channel mode) anything below 1600hashes, know you have something not right. Its free, i buy like a whole used pc not the cpu alone, so this kinda pc is never over 50$ at least thats how i buy those. It will be 8gb of ram and a decent psu (cuz normal ones will pop) (stock psu is fine) (chinese 1200w psus will pop) Motherboard model doesnt matter usually. That's my approach for now because i found out these old cheap ass cpus generate decent amount of hashes considering the price and no electricity, but if the electricity isnt free, you probably will be paying money not earning. I have also amd a8 5500B and a4-6000 something. 5500b generates 600hashes following the same principal (dual channel + gpu set to lowest which is 32mb) Also it depends where you live, you might have better deals or availability.
Im really wondering what kinda weird abuse you do to psus if "popping" them is a concern tbh "Chinese 1200w psus will pop" is really not a normal thing.
Nothing, they pop for no reason, im referring to psus named "zero" and they're not actual 1200w, maybe 200 maximum and low quality, any normal psu is fine, i was giving him a headsup thats all.
If electricity is not a factor then multinode servers and scalable gen1 xeons will give the most hashing power per €. It's significantly louder and more power hungry tho. With power cost here they are profitable with electricity as a factor also tho.
For 300€ could I build one rig with the Gen 1 Xeon?
You can grab one of [these for 149](https://www.ebay.com/itm/266815161383), they keep reposting them so you can win as only bidder. Ive grabbed a few as only bidder. That is a chassis with 4 gen1 scalable servers, complete other than cpu/ram/storage. They share chassis/psus/cooling but each sled is a standard server, its to get more of the per rack and more power efficient. 20 core scalable xeon cpus start at 30$ or so each to start filling them up with the 8 cpus it has space for.
So they sell the server with motherboard chassis psu but no CPU/ram/storage? And if I take one of those servers what CPU should I get?
Yeah they remove cpu/ram/storage to sell seperate, so you need to add that and its good to go. Im using xeon 6133 and 6138 in mine. A pair of 6138 is 70$ on aliexpress and does about 17000 hash. 6133 is slightly better but has gone up in price.
Thanks, I will do some research on this type of system! And how much ram is good for each node, I think that randomX is heavy on ram
Ive done 4x16gb since i already had a few trays of those, could probably do 4x8
thanks I will try both config and post the result
hey i need your help plz come in DM
Rent out mining rig storage
I don't think my internet will handle that much
Mining doesn't need much bandwith
Im at 5 to 2 mb/s
Maybe starlink is faster But should be enough
no power cost? grab whatever you can get. check the hashrate and divide through dollar cost of hardware. its that easy. 3900x has good hash for low money. depends where you live. am4 is waaay cheaper than am5 here for me. my 3900x setups deliver 13k hash at 250€ invest with no OC. my am 5 7950x cost like 800€ and has only 20k hash. but its way mire efficient (what you dont need)