Complex sentence: Additionally, while the K5's floating point performance was regarded as superior to that of the Cyrix 6x86, it was slower than that of the Pentium; however, it was also more reliable particularly for transcendental function results.
Split into simpler sentences: Additionally, while the K5's floating point performance was better than that of the Cyrix 6x86, it was slower than that of the Pentium. Though slower, it was also more reliable particularly for transcendental function results.