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I7 860 just went from 4 cores to two...

trisp

trisp

trisp

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Joined
7 Apr 2010
Posts
837
i have had the i7 860 since they were launched around 2 years ago ish now and have had it oc'd @ 4ghz / 4.2 ghz since then, the temps have never been bad at all around 30-40c ish min 40-50 load and max temps in prime sub 70 and i have tested it every month or so. Today it crashed and when i loaded it back up i suddenly have 2 cores/4 threads instead of 4 cores /8 threads... so i imediatly restart it check bios but alas no luck reset bios and see if the problem remains alas no luck, so i reinstall a older version of my bios ( had updated it in the last week) and still no joy. the thing is i have tested it with prime to see if its unstable and it did 10 mins of prime perfectly fine anyone have any ideas? i think half the chip just died tbh...

if i cant fix it i will probs use this as a excuse to buy sandy but i would rather i sorted the problem and wait for the next gen of cpus/mb.
 
i have checked msconfig cpuz and cooltemp all show 4 (as in 2 cores 4 threads) it normally shows 8 and i think half of it has just died.. :(
 
i will check tommorow to see if any contacts have burnt out i find it strange they would have but you never know!

and msconfig only shows 4 max as i pointed out cant change it to 8.
 
So i removed the chip and looked at it no damage or discoloration that i can see but i think i have found the problem i think the ht on one side of the chip is faulty because i can boot into windows and have 4 cores/4 threads if i dont put ht on but if i do put ht on then i have 2 cores/4 threads and it seems that i can oc the chip as far as i want as well sitting here with 4 cores/4 threads at 4ghz 10 mins prime stable ... i think the chip has had a heart attack but is still okayish.....

just have not got a clue why its become a i5 750 lol maybe it saw one on the internet i dont know.
 
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In my bios i can change if i have ht on or off, i can also change how many cores i have active "all, 1, 2, 3, 4" , if i turn ht on i only get the "all, 1, 2" options but if i turn it off i get "all, 1, 2, 3, 4" all my cores, it is sadly nothing as simple as my os :(
 
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