Powerpc rhymes with:
apc, pc, apc, cc, knbc, pc, ac, addressee, amc, apc, artsy, bbc, bresee, c, cc, cdc, cie, cxc, emcee, foresee, forsee, fsi, gassee, gnc, gutsy, hohensee, jaycee, jessee, keesee, kissee, knbc, lessee, licensee, losee, lxi, nic, ofc, oversea, pc, piercey, sci, sea, see, si, sie, sieh, sightsee, tenn, tennessee, tootsie, tse, t_a_c, undersea, u_s_m_c, woodmansee, yangtze
Powerpc sounds like:
paperback, paperbacks, paperboy's, paperboys, paribas, paribas's, perhaps, perovich, perpich, poorbaugh, porpoise, porpoises, powerbook, powerpcs, powerpcs', prapas, prefabs, preface, prefix, prepackage, prepuce, previews, previous, priebke, privacies, privacy, probasco, probe's, probes, proboscis, probus, profess, professes, profs, profuse, proofs, propes, prophecies, prophecy, prophesies, propose, proposes, propps, props, proves, provigo, provigo's, proviso, provisos, provoke, provokes, provus, purpose, purposes, purves, purveys, purvis