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Those of you with OcUK OEM 2700K Official OC Results thread!!

Sound very interesting - thanks geeman1979, are you using 2600k @ 5GHz as mine is 5GHz at 1.48v (before was 1.42v but BSD after playing flight. So I put the vcore back up to 1.48v as I don't know to get fixed voltage like 1.45v and staying there! mine Z68X UD4 B3 BIOS F9
 
bulldog147 said:
Sound very interesting - thanks geeman1979, are you using 2600k @ 5GHz as mine is 5GHz at 1.48v (before was 1.42v but BSD after playing flight. So I put the vcore back up to 1.48v as I don't know to get fixed voltage like 1.45v and staying there! mine Z68X UD4 B3 BIOS F9
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Running mine at 4.8 GHz! 1.4v in Bios, INTERNALL CPU PLL DISABLED which is giving me a positive vdroop of 1.416v idle and 1.404 under load. It will run at 1.38v, but needs INTERNALL CPU PLL ENABLED. Swings and roundabouts really. Thats on the UD4 BTW.
 
lukeharvest said:
Just get the P67 version. You could've got it for £237.50 on last week's TWO. Besides, the P67 Maximus is reportedly more stable/better at overclocking since it's more mature.
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I'm quite happy with what I have at the moment.

I was commenting on the fact that for a stable 5GHz OcUK are having to use a £315 motherboard.

I can easily get to 4.8GHz on a board costing less than half that amount.

The extra 200MHz isn't worth the cost.
 
Gibbo said:
Not a single CPU has failed to hit 4.8GHz yet.

The T-Rex system was at 5GHz but it was failing test, so it was changed back too 4.8GHz, but unknown to myself tech had been looking into it and it turns out the issue was not CPU's, but the mainboard being used in that system. But were finding the CPU's were not the issue.

They have changed the mainboard from Asus P8Z68-V too the Maximus and are now finding that system operates at 5GHz stable. :)

So hence as I said earlier, a good motherboard is critical for frequencies beyond 5GHz and the Maximus is a good choice.
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how well will the asus p8z68-v pro do compared to the non-pro and the maximus?

as mentioned before have the asrock extreme7 but it being rma'ed(more than 28days old so will be sent to asrock), so will be getting the p8z68-v pro while I wait(only got the extreme7 in the first place due to the pre-order price).

if it hadn't 'broken' wonder how the extreme7 would have compared to the board boostjunkey has and the maximus.
 
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Well I've been doing some more experimenting.

Looks like I can achieve 5Ghz stable @ 1.41v - Thats both IBT and Prime95 which is running at the moment (leaving it for a 12 hour run - gone 3 hours so far :) ).

My problem is with temps though - even at just 1.41v and with water cooling it looks like my 5850's are throwing either too much extra heat into the loop or the loop isn't configured correctly and they're bottlenecking the flow - not sure. Bit wierd really as water temps are reading ok and theres hardly any heat coming out of the rad! hmmm

MORE THAN HAPPY! - and can confirm 5Ghz IS do-able but only if you have adequate cooling ;)

Oh - and thats with the Asrock Z68 Extreme4 Gen3 board using the latest 1.1D beta bios btw - who needs a £200+ board ;)
 
fowler002 said:
how well will the asus p8z68-v pro do compared to the non-pro and the maximus?
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My P8Z68-V originally had a 2500k on it @ 4.6Ghz with 1.34v which was prime stable and temps were hitting high 60's / low 70's with an Antec 620.

With a 2700k (bought from OcUK's OEM batch) it can do 4.8Ghz with 1.36v which is prime stable but temps are a little high at mid 70's despite having upgraded to a Corsair H80 with fans on high.
 
zoomee said:
Well I've been doing some more experimenting.

Looks like I can achieve 5Ghz stable @ 1.41v - Thats both IBT and Prime95 which is running at the moment (leaving it for a 12 hour run - gone 3 hours so far :) ).

My problem is with temps though - even at just 1.41v and with water cooling it looks like my 5850's are throwing either too much extra heat into the loop or the loop isn't configured correctly and they're bottlenecking the flow - not sure. Bit wierd really as water temps are reading ok and theres hardly any heat coming out of the rad! hmmm

MORE THAN HAPPY! - and can confirm 5Ghz IS do-able but only if you have adequate cooling ;)

Oh - and thats with the Asrock Z68 Extreme4 Gen3 board using the latest 1.1D beta bios btw - who needs a £200+ board ;)
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Hence my post 160, comparing my Gigabyte UD7 and UD4, it seems to be more about Bios stability and the Cpu itself which is the limiting factor on how well these overclock. Rather than purley how expensive the Motherboard is.
 
I can understand wanting to get to 5Ghz and myself have gone down the top board route (x58 extreme 2 for my 920) but for me its all about getting the cheapest possible mobo/cpu combo and clocking the nuts off it to match the high end, i suppose my outlook has changed in the last couple of years :( spending £200+ on a mobo with a ton of features that most people would never use just seems a waste for an extra 200Mhz on an already amazing cpu.
 
I'm sure glad I didn't jump and order one now if it needs a £300 plus mobo in order to hit 5 Ghz, I'll stick with my crap 4.4 Ghz max 2500k and Asus Z68Pro mobo
 
axer said:
My P8Z68-V originally had a 2500k on it @ 4.6Ghz with 1.34v which was prime stable and temps were hitting high 60's / low 70's with an Antec 620.

With a 2700k (bought from OcUK's OEM batch) it can do 4.8Ghz with 1.36v which is prime stable but temps are a little high at mid 70's despite having upgraded to a Corsair H80 with fans on high.
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still doesn't answer my question of how the pro version will do against the non-pro version, from what you're saying you have the non-pro version. all your answer is telling me how the non-pro does against the maximus, unless of course the pro and non-pro clock the same.

by the by with the i2500k did you happen to try 4.8/5ghz with the antec 620? I have the ocuk h2flo(aka the corsair h60) which from what I've read is similar in performance to the antec 620.

i would be interested in the settings you used for the 4.6ghz once I get the board, will get back to you about it once I have it and have the pc up and running.
 
Just to clear things here up. I'm running 5.1ghz stable, can have 5.2ghz but my temps are limiting me. I have an Asrock P67 Fatality motherboard, this board isn't a £300 motherboard.

Also 5ghz was a breeze with this motherboard and the 2700k.
 
My 12 hour Prime95 run failed at 7.5 hours on one core @ 1.41volts :(

Problem is the heat though I think - I've hit 80 Degrees C on one core at some point which I can't understand as theres hardly any heat coming out of my rad!.

Looked into it further on other forums and some users are reporting crap temps using the Supreme HF blocks - will give it another try once the new jet plate is released.
 
zoomee said:
My 12 hour Prime95 run failed at 7.5 hours on one core @ 1.41volts :(

Problem is the heat though I think - I've hit 80 Degrees C on one core at some point which I can't understand as theres hardly any heat coming out of my rad!.

Looked into it further on other forums and some users are reporting crap temps using the Supreme HF blocks - will give it another try once the new jet plate is released.
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Don't get sucked into the prime stable nonsense matey.
It's just for bragging rights, nothing else!

No application or game is going to put that much stress on the cpu in day to day usage.

If it does what you want now, leave it be before you splurge more cash for a pointless venture.
 
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