i see this sold on facebook market placce. I am curious if this is useful for setting up backtesting systems? NEW Dell Precision 3930 Rack Workstation - i7-8700K 6C 3.7GHz - 64GB RAM, 256GB M.2 NVME, 1TB HDD
Pretty much the same config I'm using as my primary trading rig. Rack or not rack, it's just a matter of physical difference. On a server room, where you have multiple servers, rack is the only choice. If it's not your case, then it doesn't matter. If the price is good, go ahead, but remember, this is a 4 years old config. Mind sharing the price you saw?
It's a fairly good price. Although, you didn't mention the graphic card. And for your needs and that price, not sure it would be the best choice for you. 64Gb of RAM is a lot for testing with NinjaTrader and most of the price is coming from that part. The CPU was a good one, but 4-5 years ago.