What's the best way to transfer USD to SAXO? Get a HSBC account help?

I need transfer USD into Saxo not SGD,

DBS remit charage me 4x USD (same as oversee for just local transfer)

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Does it help if I go to HSBC and get a account? the same bank used by SAXO

will it ask me to do TT wire just for internal USD transfer and charge me as same as DBS?

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