OCUK 'guaranteed OC' chips - anyone tried?

joxang

joxang

joxang

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Looking specifically at Intel Core i5-2500K 3.30GHz @ 4.80GHz.

What do you think the chances are of hitting a magic 5Ghz with one of these, or are they tested so 4.8Ghz is their absolute limit with reasonably safe voltages?

I'm looking also at some overseas listings (elsewhere) for binned 'extreme' 2500ks which by lots of reports can reach 5Ghz.
 
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panyan said:
that sounds highly suspicious - extreme 2500k's?
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They label them 'extreme' because they're binned for top clocks. It sounds suspicious but the company's feedback is 100% with tonnes (i.e. hundreds) of sales of these binned chips, from Nehalem onwards.
 
panyan said:
self-binning? what is that?
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They choose CPUs that are either more likely to overclock well (based on batch etc) or they actually test CPUs to see what they can clock to and then sell these ones as "extreme" or "guarenteed OC" chips.

This is on top of Intel binning the chips. For instance Bloomfield chips that were capable of clocking higher were badged i7 950 whereas lesser ones were badged 930. Its the same chip just more capable.
 
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23JMZ07 said:
. For instance Bloomfield chips that were capable of clocking higher were badged i7 950 whereas lesser ones were badged 930. Its the same chip just more capable.
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Not really these days imo, theres such a massive headroom in the actual potential of chips of this era from Intel that they could pick any chip and it would work within their mainstream selling frequencies. For instance i've never met a 920/930 that did not achieve at least 3.6Ghz on stock volts or less, what was the top Bloomfield? 3.33Ghz i think? Also i've had the same results on avg with 920s, 930s, 950s etc.. when overclocking. Probably more rampant back in the old PIV/PIII days etc.. but i think since Core 2 just about every chip was capable of at least the higest speed grade at stock volts.
 
Justintime said:
Not really these days imo, theres such a massive headroom in the actual potential of chips of this era from Intel that they could pick any chip and it would work within their mainstream selling frequencies. For instance i've never met a 920/930 that did not achieve at least 3.6Ghz on stock volts or less, what was the top Bloomfield? 3.33Ghz i think? Also i've had the same results on avg with 920s, 930s, 950s etc.. when overclocking. Probably more rampant back in the old PIV/PIII days etc.. but i think since Core 2 just about every chip was capable of at least the higest speed grade at stock volts.
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Indeed they are all capable. I don't know of many 920s that couldnt do 4ghz.. However Intel will still bin the chips based on performance testing at the factory.
 
Getting 5Ghz Prime Stable at resonable volts is exceptionally rare with these chips. I've yet to see any sub 1.4vcore 8 hour prime stable shots. I think most people run them at 4.8Ghz 24/7. Buying a 4.8Ghz binned chip is a safe bet as they have already been tested to be Prime Stable at that speed.
 
beh* said:
Getting 5Ghz Prime Stable at resonable volts is exceptionally rare with these chips. I've yet to see any sub 1.4vcore 8 hour prime stable shots. I think most people run them at 4.8Ghz 24/7. Buying a 4.8Ghz binned chip is a safe bet as they have already been tested to be Prime Stable at that speed.
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I doubt they've been tested for 8 hours or anywhere near that.
 
I never said they had, however it's not like they are wacking them in, booting at 4.8 and then sending them out to customers.
 
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