Re: Intel?
Seems that ECC doesn’t completely defeat rowhammer attacks, if that’s what you mean.
https://www.vusec.net/projects/eccploit/
Although yes, it is annoying that ECC memory is quite expensive. After Xeon processors’ prices started being quoted in kidneys and liver lobes instead of currency, I moved to AMD for my own machine: I should be able to run ECC memory, but I must admit I was not willing to make the investment.
Anyhow, it’s still possible to run ECC modules without spending tens of thousands on a computer. But it’s difficult for under 3-4k, yes.