The PowerPC Alliance has been previewing its first G3 family chips and claims that the first part chip is slightly faster and is cheaper to manufacture than Intel Corp’s planned Pentium II chip. Code-named Arthur for the king, the part is expected this summer. The second part, code-named Mach 5, will also be out in the second half. Arthur is tipped to be 90% faster than the current PowerPC 603e, and to start with a 250MHz clock. Meantime IBM Corp has a new embedded part, the PowerPC 403GCX, which is to go into the Network Stations built for the company by Network Computing Devices Inc. IBM also cut prices about 20% on the earlier PowerPC 400 parts, the 403GA, 403GB, 403GC and 401GF. The 403GCX includes on-chip data and memory management, and comes in 50MHz and 66MHz speeds. The 50MHz version of the part is $37 for 10,000-up, the 66MHz will be $44.50 when you order 10,000-up.