Obviously Intel didn't want to make all there other CPU's suddenly seem irrelevant if Ivybridge could have reached 6.0Ghz. I don't think it was wrong for them to limit the overclocking, there a business, they have Sandy - E range for ultra performance, Ivybridge is mirange low power chip. Why should they give all this performance at £250... People expect to much imho. If you want ultra performance you have to pay for it and go Sandy E...
My 3770K @ 4.6Ghz gives similar performance to my old 2700K @ 5.0Ghz, surely this enough for most people?
Actually you're 3770k @ 4.6Ghz gives 4.8Ghz on SB. also the i5's for IB are "midrange" SB-E is enthusiast chips and come into a completely separate category.
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i would think the double sided tape would be useful in the fact it can just stop the IHS from sliding about when moving the chip into the socket before clamping it down. not sure what it would do under heat tho