Question w3680 CPU

Mar 16, 2019
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I have installed the cpu on a few dell hp workstations. when watching youtube 4k 60fps, it stutters every few seconds. very annoying. the cpu is overclocked at 4.1ghz. temperature idle at 20's . max at 40's. my main computer is asus board running a x5650 cpu at stock. only 2.6ghz but play 4k 60fps video perfectly.

my video card is the same
ram is the same
hd is the same

any suggestions?

Is it possible CPU are the problems? (bought a couple from ebay yesterday. all the same results. cinebench R15 range from 810 to 840. which is much worse than x5650

the cpu has 60 days warranty. should I return them?
\

they really suck

few years ago, when bought the x5650, it scored 980 on the first run with garbage intel push pin heatsink for old i7 930 and $3 20g thermal pastes.

and I'm running it with the intel push pin and cheap thermal paste for years without any problem. 0 frame loss for 4k 60fps.
 
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