I received the 3700X a few Days ago but unfortunately it's not even sure it will work

. It was sold as untested and
had some Thermal Paste on the underside (where the Pins are). Soaked in Isopropyl Alcohol for a couple Days but that didn't remove almost anything unfortunately. I think I'll try to just plug it in the Socket, as attempting to clean it with e.g. Toothbrush will likely just do more Damage

. The Seller told me it was some Arctic Cooling MX-4 so at least it's not electrically conductive (but can be electrically capacitive).
For the other CPUs I still need (19-20 depending on how you count), I still need to see what to do.
Between private Sellers ******* in Denmark that don't budge a single 1% of Discount and the same with Companies (probably in Germany as well for new Products), I'm not really sure what to do ...
There are some Deals on either
ComputerUniverse (50 EUR Shipping but NO VAT adjustment to Denmark since I guess they do NOT sell many Products in Denmark) or
Reichelt (10-15 EUR Shipping but WITH VAT Adjustment to 25%).
CPU | Architecture | ECC | Core Config | Cores | Threads | PCIe Version | PCIe # Lanes | Box / Tray | Shop | Benchmark Score | Price [EUR] | Score / Price [EUR] |
AMD Ryzen 7 5700 | Cezanne | YES | 1x8 | 8 | 16 | 3 | 20 | Box | Computer Universe | 24237 | 135 | 179.5 |
AMD Ryzen 7 5700X | Vermeer | | 1x8 | 8 | 16 | 4 | 20 | Tray | Reichelt
Computer Universe | 26627 | 122.8
116.9 | 216.8
227.8 |
AMD Ryzen 5 5600X | Vermeer | | 1x6 | 6 | 12 | 4 | 20 | Tray | Reichelt | 21866 | 100.7 | 217.1 |
AMD Ryzen 5 5600 | Vermeer | | 1x6 | 6 | 12 | 4 | 24 | Tray | Reichelt
Computer Universe | 21557 | 90.2
85.9 | 239.0
250.9 |
AMD Ryzen 5 5500 | Cezanne | | 1x6 | 6 | 12 | 3 | 24 | Tray | Reichelt
Computer Universe | 19346 | 69.2
65.9 | 279.6
293.6 |
AMD Ryzen 5 4500 | Renoir | | 2x3 | 6 | 12 | 3 | 16 | Box | Reichelt | 16119 | 55.6 | 289.9 |
AMD Ryzen 7 3700X | Matisse | YES | 2x4 | 8 | 16 | 4 | 16 | | | 22482 | | |
AMD Ryzen 5 3600X | Matisse | | 2x3 | 6 | 12 | 4 | 16 | | | 18167 | | |
AMD Ryzen 5 3500X | Matisse | | 2x3 | 6 | 6 | 4 | 24 | | Proshop | 13165 | 40 | 329 |
AMD Ryzen 5 3600 | Matisse | | 2x3 | 6 | 12 | 4 | 16 | Box | Computer Universe | 17711 | 72.9 | 242.9 |
AMD Ryzen 5 3500 | ??????? | | 2x3 | 6 | 6 | ? | ? | Tray | Computer Universe | 12799 | 41.9 | 305.5 |
AMD Ryzen 3 3100 | Matisse | NO | 2x3 | 4 | 8 | 4 | 16 | Tray | Computer Universe | 11564 | 30.9 | 374.2 |
EDIT 1: So yeah, not sure what exactly to do

. It depends how much CPU Power vs RAM I need for each Node. Even the Ryzen 3 3100 blasts the Hell out of Intel Xeon E3 12XX v3/v5/v6 at more than TWICE the Performance.
Without compromising Performance too much, I'd say the
AMD Ryzen 5 5500 looks like a good Bargain (27% lower Performance at 46% lower Cost). Maybe also quite a bit easier to cool down.
Thoughts

?
EDIT 2: I wonder where all the CPUs that were used by Hetzner etc went though. There is not much going on on the 2nd Hand Market

. It's even more expensive than buying new

.
EDIT 3: Updated table to show Cores/Threads Numbers and added also 3600X/3700X even though NOT available on the New Market.
EDIT: added AMD Ryzen 5 3500X which is available in Denmark at 300 DKK (40 EUR) or Germany 35-38 EUR
EDIT 4: Added PCIe Version / # Lanes
EDIT 5: Added Architecture Name
EDIT 6: Added Core Configuration
EDIT 7: Added ECC Information.
@chlastakov observed that the 3100 did NOT support ECC Memory (System will NOT boot !)