**OcUK Extreme Haswell bundle - A review!**

fyi : OcUK themselves use up to 1.35v (but ideally below) on their other Haswell overclock bundles. I assume that is the point at which they are seeing exponential temps start to creep in.

At what point are you stressing things for negligible gains? I'd say you've got a 5GHz system there with minimal effort thus paying for the speed binned CPU has paid off.
 
Yeah, Evoaddict said typically they require 1.33v for 4.6ghz so a 1.35v limit on their bundles sounds about right.

The only reason for heading north of 5.1ghz is to find an absolute limit I'm happy to bench with, 24/7 it will stay at the provided 4.6ghz clock speeds.

It has paid off, I would encourage anyone after the best HW chip money can buy to look at these bundles :)
 
I'm now tempted to hop over the Haswell and pick up one of these bundles :D
Same board as Nick though :p

What did 8Pack say the maximum bench voltage on these were? (water) Cannot remember tbh.
 
Reading this has just made me even more excited that I just went for it and bought one of these bundles! :D... I have mine coming with the rampage formula. Can't wait to receive it along with all the watercooling kit i've ordered.

Great little review btw, thanks!
 
Tonester0011 said:
I'm now tempted to hop over the Haswell and pick up one of these bundles :D
Same board as Nick though :p

What did 8Pack say the maximum bench voltage on these were? (water) Cannot remember tbh.
Click to expand...

I'll be quizzing him next week about PSC so I'll double check with him then, but 1.4v on water sounds familiar.

Can't wait to get some new ram either, better buying now as prices look to have taken a surprising dip over the last few days, no doubt will be on the rise again shortly given the Hynix incident.

I'll try piece together some quotes later today/tomorrow from 8Pack, ScottieB & Gibbo, basically explaining the whole binning process and how these chips have no bearing on what quality chip you're likely to get buying via retail and not bundle.
 
pgi947 said:
Yeah, Evoaddict said typically they require 1.33v for 4.6ghz so a 1.35v limit on their bundles sounds about right.
Click to expand...
Hopefully ive been ok with mine, (bought secondhand), can boot into windows and so far ive just ran 3dm11 for a quick test. Needed 1.2625v to get into the os at 4.5ghz. If i can run this speed stable without much more voltage ill be happy enough. Will be faster than my old 3770k too. Temps would be my limiting factor as im on air, (alpenfohn k2) which i see is a cooler option on theese bundles.
 
I think the big problem with my Haswell is the temps (hitting over 70ºC with a VCore of 1.17v, 4.3GHz).
That would probably be the reason I'd be so tempted by one of these bundles.
It's also the reason I'm considering delidding...
 
setter said:
Hopefully ive been ok with mine, (bought secondhand), can boot into windows and so far ive just ran 3dm11 for a quick test. Needed 1.2625v to get into the os at 4.5ghz. If i can run this speed stable without much more voltage ill be happy enough. Will be faster than my old 3770k too. Temps would be my limiting factor as im on air, (alpenfohn k2) which i see is a cooler option on theese bundles.
Click to expand...

The cooler options, I'll try dig out the quote from ScottieB, but in short to cool these bundles well enough, high end air or custom water is required, the AIO watercoolers cannot keep the temps in check under long periods of stress, they gradually build up heat that cannot be dispersed quick enough and end up in a thermal shut down. This is why the only options are the top air coolers (K2 & Phanteks) or a waterblock. So you should be good to go on a K2.

GoogalyMoogaly said:
I think the big problem with my Haswell is the temps (hitting over 70ºC with a VCore of 1.17v, 4.3GHz).
That would probably be the reason I'd be so tempted by one of these bundles.
It's also the reason I'm considering delidding...
Click to expand...

Delid + liquid metal appears to give the best 'lid-on' performance, heat is certainly the enemy with these chips which isn't helped in the slightest by Intels TIM application. iirc 8 Pack said going naked will knock around 20c from load temps while a good delid wouldn't be too far behind it. If you're confident enough to do it, then do it :D
 
Ive also considered moving to one of the ocuk fathom liquid cooling units. A 240mm rad should fit in top of my case. This would also allow me to use my xonar dx audio card. Unfortunately the k2 blocks the only other useful pcie slot i have. Onboard audio on this board is dire in comparison tbh.
 
Fathoms are great value kits and should arrive in the same plug and play manor as you'd receive an AIO unit :)
 
Yep, hopefully therell be a few reviews of them up soon. Unfortunately on the main thread it's only a few amd users who have posted up results. One from a 4770k user but the system is at stock.
 
its less of a drop in temps on haswell though compared to ivy

id say 15c drop compared to around 20c on ivy
 
If you dig out 8packs review of a tech lab v8 vs h100, 240 fathom perf should be along the lines of the v8.

They're excellent for getting first timers into the wonderful world of water cooling
 
Will do, gonna need better cooling from the looks of it. Few seconds into p95 small fft, temps were 81. 90. 94 and,91.
 
or you could delid it:p

still hits mid 80's though even with watercooling/delidded chip using latest linx over on tweaktown
 
Might do wazza, i knew temps would be high. Just wasnt expecting them to be that bad. Gonna try a remount tomorrow.
 
^ Delid is probably going to be the most beneficial option :)

Check out Nickolp's results using regular tim on a custom loop, temps are through the roof :(
 
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