Editing Pentium (original) (section)

===P54CQS===
The P54C was followed by the P54CQS in early 1995, which operated at 120&nbsp;MHz. It was fabricated in a [[350 nm|350&nbsp;nm]] BiCMOS process and was the first commercial microprocessor to be fabricated in a 350&nbsp;nm process.<ref name="MPR 1995-03-27">{{cite magazine |last=Gwennap |first=Linley |date=March 27, 1995 |title=Pentium is First CPU to Reach 0.35 Micron |magazine=[[Microprocessor Report]]}}</ref> Its transistor count is identical to the P54C and, despite the newer process, it had an identical die area as well. The chip was connected to the package using [[wire bonding]], which only allows connections along the edges of the chip. A smaller chip would have required a redesign of the package, as there is a limit on the length of the wires and the edges of the chip would be further away from the pads on the package. The solution was to keep the chip the same size, retain the existing [[pad-ring]], and only reduce the size of the Pentium's logic circuitry to enable it to achieve higher clock frequencies.<ref name="MPR 1995-03-27"/>