Why you ask a question that I have already answered? If you don't believe, go lah check yourself, i.e. google GIRO or Inter Bank Giro and you will get below answer:
According to Malaysian Electronic Clearing Corporation - if one perform before 12.30pm Inter Bank GIRO (IBG) online or over counter before 12.30pm, funds credited into account same day.
And if you had read
sylille's post recently, she performed GIRO at Affin at 12.45pm, money also credited into her CIMB account same day(???).
The maximum amount is RM1 million per transaction subject to individual banks terms and conditions.
As for the RM50K, did any bank ask you? For my case, the last two week I have been using personal cheques for 3 different banks' FD Promo and nobody asked me anything about where my funds are from.
However, whenever I go deposit in Citibank Melbourne with Bank Draft, the teller always ask me the source of fund. Not only that, their Sydney office may follow up after few months later and ask the same thing, i.e. source of fund. Once the Sydney office personal called me on my Australia phone number while I was in Malaysia and I did not answer the phone (I was sleeping as there is a time difference) and their freeze my account (I couldn't perform any transactions online)!!! Later I checked my email account and notice an email from someone who was from Citibank (the guy who tried to contact me by phone), I had to email him to get him to call me back. Only after I told him source of my funds only he unfreeze my Citibank Account. And same thing happened to my wife

But the funny thing is I performed a TT (very substantial amount) and nobody from Citibank called me to ask source of funds.
Upper limit for all banks in my reply above.
Sorry if there is a miscommunication somewhere. I did mention I IBG before 12 and I get the same fund on same day. But I did on line transfer, I didnt get the fund on the same day, may be I transfered on line during the weekend.
Ocbc Penang branch asked me to Rentas instead of IBG coz the limit is only 100k for IBG. Well with your info. I can probably tell the RM, thanks. I just checked the website, you are correct on the max amount.
Yes, today is the first time I was asked sources of fund. This surprised me that is why I asked. Never have that exerience with other bank.