While the new SAT is out of 1600 and the old SAT is out of 2400, the two aren't directly proportional; you can't just multiply your old SAT score by 2/3 and expect the result to be how you'd do on the new SAT.
The only way to know for sure how you'd do on the new test (besides taking the new SAT exam) is to use the College Board's data to convert your score from old to new SAT. To find out if you’d score higher on the new SAT and why that might be the case, read on!