I need at least 10TB of ram for my algo's and even than the calculations are so complex it makes my computer lag and I get a 0.000000001 second slower fill. Probably will move up to 18TB to shave off that fraction of a slower fill to further increase my edge.
Now yer being facetious. Naughty boy. I get the snarkiness, it is a bit annoying how people think the extra 8GB difference is going to somehow squeak out extra profits.
So why is that? It's not like there are two different RAMs, one for consumers and one for cloud servers.
There is ECC (Error Correcting) ram seen in servers and some workstations, which is desirable for financial applications as a "Bit error" or a "Flipped bit" could mean a decimal place missed or misplaced resulting in a quantity, price, or symbol error. In other words, a "Digital fat finger" mistake. In addition, a RAM error could result in a system crash requiring a reboot during trading hours. Cost for this type of RAM is higher, with the highest prices seen on preconfigured systems when ordering more than the vendor's "Base" RAM. If buying a preconfigured system, don't be afraid to negotiate using RAM prices from online sources as a guide. If building or upgrading your own system and have questions, https://www.cgdirector.com/ offers very specific information and advice on building your own system, including details on computer components such as buying RAM in pairs or even quantities, RAM specifications, and how ECC works.
I'm not entirely sure and it depends on the VPS provider as well. I'm paying something like $6 for a 4GB instance.
$6 for a month? As in running your algo 24x7? That's pretty good. Anyway I get what you're saying, but I just don't see why the VPS is charging more for higher memory allocation when memory prices in general are falling.