I actually tried this with a Celeron-1400 back in the day. Had it running at 1866/133, and at that speed it could match the stock-clocked PIII-S 1400 in some benchmarks. In others, the PIII was ahead. The Celeron also required some enormous voltage to get to 1866, and actually quit working after a few hours of benchmarking.
So yeah, definitely go with PIII-S 1400. It'll outperform the Celeron-1733 and run much cooler. Plus, most of them will happily do 1575/150 at stock voltage, should your motherboard accommodate.
Worth noting: I ran those tests on an old Asus TUV4X (Apollo 133) motherboard, which has lower memory performance than 440BX at equivalent bus clocks. That may have allowed the PIII-S and its ginormous cache to shine more brightly than it otherwise would have. 😀
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