Dell Technologies Inc. DELL, +0.53% shares lost a post-earnings bump and dove to a decline of more than 5% in after-hours trading Tuesday after the PC manufacturer cut its revenue guidance and cited a shortage of chips from Intel Corp. INTC, +1.58% Dell cuts its revenue forecast for the full year to a range of $91.8 billion to $92.5 billion, after previously stating a range of $93 billion to $94 billion. "Intel CPU shortages have worsened quarter-over-quarter," Vice Chairman Jeffrey Clarke said in a conference call Tuesday afternoon. "The shortages are now impacting our commercial PC and premium consumer PC Q4 forecasted shipments." Intel admitted in a regulatory filing last week that CPU shortages were cropping up again, a problem from which the company has suffered for much of the year. Dell rival HP Inc. HPQ, +0.82% also briefly mentioned Intel CPU shortages in its earnings conference call, which was also held Tuesday afternoon, but HP maintained its after-hours gains.