Actually Malaysian still can open Fastsaver account at CIMB SG, because I just did it.
If transfer from CIMB MY to CIMB SG, the cost will be much higher compared to Instarem.

Open online at CIMB SG website.

No need, can open online here using IC.

Under CIMB Clicks > Services > Account & Cards > Link Account.

You can check if the linkage is successful  status ; >> Account & Cards > Check Account Linking Status

If still not able to link, check with the Customer Service.

many thanks for the clarification
I opened saving acc with CIMB MY and successfully link my CIMB SG acc today.

but one thing very strange, I used instarem made first SGD 1000 fund transfer 2 days ago, and it showed successful and now i can see the money in my SG link account. (via CIMB click)

Now i am waiting the activation code to activate my CIMB SG acc.

I received my code after called to CIMB SG officer.
to activate the acc, you must TT by CIMB click MY.

sorry, I have no idea. 

Well, that's the hassle with CIMB FastSaver
I'm satisfied with the Maybank iSavvy which gives me the complete convenience (with ATM/Debit Card included).
I can swipe the card anywhere in SG or even overseas (prevailing bank's exchange rate applies).
I would still support the use of iSavvy as I feel it's like an upgraded version of CIMB's FastSaver.
FastSaver can't be used to open a CDP account, but surprisingly Maybank's iSavvy can!
Don't have to test it, I already tested it. Exchange rate is higher, although BP charges a flat rate of RM7, but still losing money due to the exchange rate.
I'm sticking to Instarem for now to transfer my investment funds over to Sg.

I know. I have a CDP account and found out cannot do rights placement. That's why I said if don't have SG address use FSM.

You are right. Most charge all kind of stupid  fees. Actually must pandai pick nominee/custodian account. Pick the one without charge. The only one so far  without charge is FSM or Maybank KE prefunded. Reason for choosing FSM is maybank recently try to pull a stunt to start charging their customers. A move that didn't go down well and was reverse within 24h. That move shows that matter of time before they start charging. That's why I avoid maybank KE prefunded (already have account,  if they want to start charging,  I am moving out)

That's FSM MY. FSM SG is different story.
Yes for FSM SG you can buy stocks from SGX, HKEX,  NYSE and Nasdaq. Keep in mind for US stocks there's going to be OT be dividend charges on top of the US 30% dividend tax

Can use FSM SG to buy unit trust at zero percent service charge but not recommended. Quarterly platfoem fees.

You should get a few SMS once your account is open and ready to initial deposit. One of those will be code for First Time Login registration https://www.cimbclicks.com.sg/wps/portal/sgRegistration

You can give CIMB SG a call or drop them an email at AtYourService@cimb.com and they'll call you back (same day or next business day). They're great in a way that they'll try to contact you at least during working hours and right after working hour plus notify you via email in event they failed to reach you.

What happened to me was I got the welcome SMS but not the First Time Login code and the guy on the phone just had to re-trigger an SMS with a fresh code over

how did you make deposit?

still unsure if can be deposited from third party transfer not under the same name or not.

using cimb telegraphic?

what is your rate?

I earn RM and deposit into SGD every 3-4x a year.
I am a salaried man. Upon opening account they want bank statement and they will ask you where is money coming from.
Just be truthful to them and give them whatever they want.

Other method is to park in Singapore Savings Bonds, which is fully backed by the Singapore Government.
- The annual interest is slightly less than 2%.
- You could say that it behaves somewhat similar to the promotional Fixed Deposit offered by Singapore banks, but it only requires minimum investment amount of SGD 500, instead of SGD 10000 required for promotional Fixed Deposit.
- There is SGD 2 non-refundable transaction fee for each application.
- There is a redemption penalty of SGD 2, if you choose to redeem before its 10-year maturity.

Correct me, if I say anything incorrect.  I am just sharing what I have learnt from many experts here.