How to set memory frequency right

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kemperkipie

kemperkipie

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Nov 24, 2011
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I just built a new pc, and this are the specs:

Intel Core i7 3770k
Corsair H100 Liquid cooled
G.Skill Ripjaws 16GB (4x4) 2133 Mhz
Corsair F100 ssd 240GB
Asus Sabertooth z77
2x Gainward Phantom GTX 680 4GB
Zalman Z11 Plus

Now i'm finishing the build when i get home from work.. But first thing i want to do, is setting Memory frequency to 2133Mhz.. but i don't have any experience on overclocking etc. I'm really scared for touching some volts and such things.. So how can i set my memory to 2133Mhz easily on Asus Sabertooth z77?? i'm not getting enough information out of all tutorials :/
 
set the frequency to 1066 and the timings to whatever they are rated at. Its easy, just poke around in your bios till you find the right option. Don't mess with any voltages or anything that looks harmful
 
probably VERY simple - Go into bios and form ram select XMP, then profile 1. This should set all the parameters (Voltage/ multipliers and CL ratings to what is stored on the Ram Modules.

Added:
Caution. IB spec is 1600 (Spec for SB was 1333). With SB Intel has come out and stated that Running the ram over the spec VOIDs their warranty - That's Ram with Voltage above 1.5 V or ABOVE the 1333 rated spec. This did NOT come out until well after SBs release. They even offer a OC warranty ($25 for the i5-2500k), A one time RMA for what ever reason, even if you go above the Vcore max of 1.5 V. If they also apply this to IB, then running your ram at 2133 may VOID the Warranty, even if failure was NOT caused by the Ram.


. Always, before updating the BIOS (if Needed) and BEFORE loading your OS - verify ram stability, run Memtest86 from a bootable cd and verify NO MEMORRY errors. Once windows is loaded, I also run prime 95 as an addition verification that memory is error free.
 


DDR stands for double data rate. 1066x2 = 2133mhz. If you just use the intel XMP profile. If you don't know what that is either, read your manual.

Everything should be set to what it says on the sticker that's on the ram.
 
In the bios i selected some option "Tune OC" i think it was called.. It somehow automaticly set the fequency to 2133Mhz, and overclocked my processor to 4.2Ghz 😛 i don't know how.. but i like it :)
 
Auto overclocking is usually bad. The only thing you really need to worry about is the voltage it set it at (ram and proc) and temperatures (run Prime95 for atleast 30 minutes to check temps, more if you want to be certain of stability.)

Edit: I should rephrase that, its not really bad but most the time you get really weird values on things, or just extremely high values for the voltages.
 
Core #0 VID has a maximum of 1.211V (used HWinfo64 to see that) Haven't ran any real tests yet.. but during gaming (what i mostly do) it hardly got above 40 C... seems pretty safe to me 😛..
Also the cores ran at maximum 4224.0Mhz
And the RAM is set exactly as the Stickers and Site info said.. So i guess it's good for that..
About the Volts?? i really have no idea if it's normal @ 1.2V
Ratio to get 4,2Ghz was 41.00x
 
1.211 is OK, recommended max is around 1.30.
That said you could probably drop your Vcore, seams 4.4 can be hit at very close to stock voltage. Most auto OCs are a little aggressive on Vcore to insure stabillity. Bottom line: drop to 1.18, check stability, if Ok try 1.15 and recheck.
http://www.anandtech.com/show/5771/the-intel-ivy-bridge-core-i7-3770k-review/4
http://techreport.com/articles.x/22833

On prime95, 30 min is good to just verify your temps, but to verify system stabillity - Min is 2 hours, recommended is 4 -> 6 Hours, and some say 8 hrs (or over night). Me I shoot for 2 -> 4 hours.
 
I'm really not familiar with all those terms.. But one other thing.. i've installed another game to test with.. there my cpu hit 50 C.. and GPU hit 70 .. Not sure if that's in safe range.. And a few minutes ago, i was installing, transferring data, downloading and gaming at the same time, but atm i Alt+F4 my game, i got a blue screen.. I don't know why or how. Could it be something with this auto-overclock?
 
I'm not a gamer, but it seems that in the past day or two this has come up with some game (stream) and the probable seems to be game specific, Not a system problem, if you pass prime 95, blend mode over 2 Hours.

50 C for your cpu core temps should be fine (as I indicated I'd try lowering vCor a tad).Max running prime 95 should be OK.
 
Oké.. seems i've never used my CPU at 100% yet.. because this Prime95 gives me within 10 minutes 69 C Max... What is exactly the max temp, since i can't find it on intels site?.. But, if i start prime95 tonight, and then go to sleep.. Should it be on next morning, if not; how can i find the problem, and isn't it too long to keep it running all night (or isn't there a "Too long" for prime95?)
And "Lowering vCor a tad"..... I'm really sorry but that doesn't say anything to me.. i'm pretty sure i can find "vCore" in my BIOS.. but if i find it.. how should i lower it? how much, and what if it doesnt work anymore?
Thnx for your help btw 😉
 
A quick search did not show what the max Core temps are before throttling starts (thats the temp that the cpu will start to cut back to protect itself. For SB CPUs it was about 95C.

If you hit 69 C in 10 Minutes you DO NOT want to run it unattended. You should be OK under 75 C. The temperature rate of increase should start to level off after 15 Min. so what it and see How long it takes to reach 75C (if it gets there). Myself I found that 2 -> 4 Hours seems to be long enough to check stability.

If You are using the HSF that came with the CPU - SHI* can it (Not really, you need it if you have a cpu failure and need to RMA it). The stock intel HSF is at the BOTTOM of the totom pole interms of performance, Highly recommend you buy a 3rd party HSF (Check out the Hyper 212 as it was very good based on price vs performance.

On Vcore. From the links you can probably use the stock voltage which is approx 1 V.
But if you start at your 1.211 and lower it in 0.02 increments, Untill the system is unstable, then go back up by 0.01. What will happen is the the computer may fail bios check and revert to default values, or most likely, it will boot into windows and give you a BSOD, or fail prime 95.
 
Oké so i'm not going to let it run this night unattended. (I live in the netherlands, it's 1.07 at night atm)

What I have to do is test my cpu while i'm at home 2-4 hours and it should still be below 75 C? I will try that tommorow.

I already have another cooler like i said in my first post. It's the Corsair H100 looped liquid cooling. But is it a usual temp for this cooler, or didnt i apply it well, or something like that? (Idle shows 28 C atm after full day running, stress reached 68 C so far)

I now had 1 Blue screen wich randomly appeared after i "Alt+F4" a game (League of Legends spectator).. And the same day my system froze during a crash in the game: Saints Row the Third. I had to reboot manually.... Maybe it is some GPU problem. (Phantom GTX 680 4GB) What can i have done wrong with that...

And what exactly is lowering the Vcore going to do. Is it going to improve stability? Or is it to overclock my CPU even more... cause for a while, i'm still O.K. with 4.2Ghz.... When I have more time after my study period i will start foccusing on getting higher clocks.. for now i want it running smoothly for a couple of months...
 
Ivy Bridge does not Overclock as well as SB. Higher Vcore heats the IB up more than SB.

As I mentioned, Software Overclocking is more aggressive in raising Vcore to insure CPU stability. So you can generally lower the CPU voltage slightly. By doing this you will lower your Temps, primarily under load ( not much for idle temps). The heat generated by the CPU is a product of Voltage and current.

I would say your HSF is probably attached correctly (some have problems locking the 4 pins) as your Idle and load temps seem correct for a silght OC on IB. Many SB Users trying to OC their CPU het 85 C with a stock Intel HSF. Stock HSF just does not work that well, In fact I do not even remove from Box any more - Just automatically install a "good" HSF.

I'm Not a gamer but, If No crashes within the 2->4 Hours running Prime95 I would say your problem is related to the games, and or their drivers.

 
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