Manual OC 2500k on z68AP-D3 ?

Borsch

Borsch

Borsch

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10 Jan 2012
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Hello,

Please bear with me, this will be my first ever OC via bios (I've only overclocked my previous Dell C2D from 2.00 to 2.66GHz with a piece of kitchen foil hehe).

I have a Gygabyte Z68Ap-D3 mobo and would like to do a manual overclock as I understand this way I will likely run at lower voltages and thus cooler temps.

This is my OC "template" (from another forum):
OC'ed manually with a x45 multiplier a vCore of 1.28(cpuz shows 1.272) and RAM at 1600 Mhz (I set that when I put the rig together).
The result is here http://valid.canardpc.com/show_oc.php?id=2140622
That failed Prime 95 as well after 40mins so I tried again at 1.305V @4.5GHz, after 130 mins stable with 60C max on the cores, happy days.
So I have a clock speed just shy of 4.5Ghz and a max temp of 60C while running Prime95 torture test, compared with 4.2Ghz at 63C(max) with a 1.344 Vcore. Manual overclocking for the win
Click to expand...

My question is: do I need to set anything for RAM in BIOS? When I assembled the PC with 2x4Gb Corsair Slimprofile 1600 1.5v 9-9-9-24, it was straight plug'n'play - I did not change any of its settings. Will I need to change them for manual OC?
This is what CPUz shows for RAM right now, before any OC:



I am confused by its "668.6Mhz":confused:

But CPU tab of CPUz shows this:


1600Mhz does feature here - so RAM does run how it should?
Once again, do I need to change anything with reagrds to RAM for my OC?

Follwoing that, do I need to use "Turbo" or "Multiplier" to OC - is Turbo a "smart function" where Windows will adjust it according to needs, and multiplier a "dumb" permanent OC? Do I need to disable TUrbo for manual OC?

Ok, I think thats enough questions for the first post :)
 
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Relevant BIOS screenies:

I cant see the Vcore numbers, there is only dynamic Vcore slider that sits on 0.00, but even it does not show its current actual value (like 1.34V or something).

RAM shows at 1333Mhz- but is that boosted to 1600 when necessary by W7/ Turboboost, or is it just stuck at 1333 all the time right now?
Menu1


Menu2


Menu3


Menu4
 
Many thanks for you time, RAM is now seemingly sorted - 1600MHz was shown at boot and CPUz now shows DRAM Frequency @ 802.4 MHz

However, I'm now running Prime and temps are increased by about 3-5 degrees (compared to what they were when XMP was disabled. Also when enabling XMP in BIOS, it asked "Did I want to speed up my comuter", I selcted "yes"). Is that because XMP is some sort of "eazy OC" solution that is also liable to overvolt? Is there a Manual equivalent to XMP?
 
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This is my current successful attempt at OC- passed 20 minutes of Prime.

I've switched off Turbo Mode (it said in BIOS that with it disabled OC is more stable) and right now I'm trying x43 multiplyer at Vcore 1.284V.
So, yes, it appears that DRAM voltages are ok, timings are still 9-9-9-24 - so that good too.

Another question that I have is that DRAM Voltage is shown at 1.524V. WOuld it be beneficial to lower that Voltage too (once again to keep temps to a minimum)? DRAM should run at 1.500V or even below that, right?
 
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varkanoid said:
as for RAM my Corsair recommends 1.6v for 1600mhz so Borsch click on the SPD tab and it shows voltage for each speed.
Click to expand...

Cheers for that - mine is 1.5V for 1600.

My chip is D2 as well :)

Aaaand, my OC works and I am happy:)

I decided to stop at 4.3GHz, Vcore 1.284V for now :) I only have Freezer 7 Pro CPU cooler, so temps when running Prime for 20 minutes are approaching 65+ even with that voltage.

Couple of points: in order to make sense of Dynamic Vcore, I would set the +/-0.xxx value, reboot back into bios and see the actual Vcore value on the M.I.T. screen.
Manual overclock is FAAAR better than just turning up Turbo, as Turbo has put my Vcore to a rather hot 1.344V (compare to my manually found stable and much cooler voltage of 1.284V!). So manual OC is definitely worth spending some time on - about an hour is all it takes (not counting Prime benching - this can be done as background task)

Here are my settings if anyone else needs them in the future - budget Gygabyte z68AP-d3 is very good board for the money imho.




 
FiXiT said:
Ok thanks for your help anyway, I'll have a look a older posts to see if I can find similar problems I'm having getting past 4.3, it may be the cpu's limit or motherboard. I raised the dynamic vcore last night, vcore was reading 1.416 in bios but still wouldn't boot in to windows.
Click to expand...

You must disable Turbo! Before I did that, I also could not boot. Disable turbo and try lower Vcore again.
 
Ok, this is very confusing now:

Sometimes my overclock works perfectly and shows the x43 multipplyer and corresponding 4.30/4.20 Ghz in all monitoring progs, but on other occasions it does not show in CPU-Z or CoreTmemp, but does show in My computer properties! (all while running torture test in Prime, so no excuse of throttling down to save power):

1bfc669d1c1577722327e8b94ed46c3a.jpg
 
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Hm, you could well be right! I didnt pay attention to whether it recovered from sleep, but I have noticed that rebooting always gets the OC back.

My bios is the F6 BIOS, and I have now noticed that Gygabyte has released beta BIOS F7e that apparently
Improves power on issue
Update ME / CPU code
Click to expand...
http://uk.gigabyte.com/products/product-page.aspx?pid=3897&dl=1#bios
Many thanks for your answer, looks like we will have to wait for the final build of F7.
 
Hmm... After recovering from sleep with the new F7 BIOS CPU is stuck at full OC (4.3Ghz in my case), not throttling down to 1.6 when idle, like it does after reboot.

Also I now have a black screen for about 2 seconds during windows welcome sounds, everything else is ok it seems.

Do people reinstall Windows after updating Mobo BIOS?
 
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