yes, umbrel is faster, because it seems to me that it already brings a part of the chain downloaded and that initial work saves time, but what affects you are those 4GB of RAM, if you can download the already verified chain from some sites, I I don't recommend that, you would be trusting another one to do the node work, but it works, but if you had already synced one node, there you have the chain downloaded, you can copy the files downloaded by the other node, they are all compatible and you pass them to the new one node, you can also redirect your new node to only connect to the old node and it might be a faster download, of course if you still have the original node.