Yep, these cards need a fan (or any kind of directed air flow).
Where did you get "several ms of latency" figure from? I have not measured external card, but may be I should do it... Because cards themselves have latency in range of microseconds, not millis.
Where did you get "several ms of latency" figure from? I have not measured external card, but may be I should do it... Because cards themselves have latency in range of microseconds, not millis.