Reached 4.9GHz... what is the limiting factor now?

qbazdz

qbazdz

qbazdz

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Hi,

I've been testing the new build I'd put together for my friend this weekend and I wonder how I can find out what is the limiting factor of the current o/c I've reached.
If it was even for some benching I'd love to crack 5GHz. :D

The set up is:
2500K
Z68 ASRock Extreme4
8GB Corsair XMS (currently @ 24-8-9-8 1T 1333Mhz 1.5V)
Scythe Mugen 2 (max temp. /hottest core/ with 4.9GHz was 63C)
620W Antec Gamer PSU

build is on a 1TB F3 with Win7 x64 (will move to SSD after I get the final o/c)

At the moment I was able to get 4.9GHz (49 x 100.00 @ 1.395V) stable for 3 hours of Prime and had no issues whatsoever.
Additional settings: no extra Turbo Voltage, Speed spectrum Disabled, Load Line Calibration - Level 1 (straight, horizontal line on this graph in BIOS), VCIO ~1V, VCCSA ~0.9V, turned off all unused stuff like FireWire, built-in sound, LAN etc.


If I even touch the BCLK its either a BSOD or the PC won't boot. :(

It would be great if someone with good knowledge of ASRock UFEI could give me a hand with that :)
ASRock named their voltages a bit strange and their manual is let's say... less than informative ;) :rolleyes:

Thanks :)
 
Probably just the fact the chip wants to go no higher on that voltage try upping to 1.4 and 50X multiplier 1.4 is the max you should go to i believe but not ideal for 24/7 but the performance increase you are going to get from 4.9 to 5 is marginal, but i understand it sounds cool ;)
 
Thanks! I'll give it a go in the eve!
I'm really curious how to squeeze a few more MHz of the BLCK though...
Can't wait to get into the 5GHz Club ;) LOL
 
You need 1.4 or more for 5ghz unless you got a good chip. Ive had my blk at 104

Just try 102 at first

my 2600k is stable at 4.8 with 1.41 volts. Leaving it at that for 24.7 i can get it to 5175mhz but only for a bench its not totally stable. Can boot at 5.2 but needs 1.45volts and not stable get a blue screen half way through a bench.
 
According to the sticky at the top of the page http://forums.overclockers.co.uk/showthread.php?t=17612922 1.38 should be your absolute max for everyday use. I have also read some posts that say to leave the blk well alone at 100 for the health of the chip. I'll try and find the posts/articles. By all means try to get into the 5GHz club as a goal, then get the chip clocked back to maybe even 4.7 at under 1.38 volts to get the most life out of the processor.
 
I've seen that you should leave the blk at 100 too or you could serious damage the chip over time.

Not sure how accurate it is/was but upping the voltage would be the best and safest bet though I wouldn't run it at over 1.38 24/7.

Worth a go briefly to get some stonking benchmarks though!
 
Got a score @ 5.1GHz last night, will upload later today. Had a score @ 5.2GHz but after the screenshot it crashed buuueee :(
I'm only planning to check what the chip is capable of and most likely leave it @4.6-4.8 Max.

UEFI setting for LLC available on the scrsht

110130000755.png
 
Ah, now I see what you mean about the graph :)
Level 1 should be right then (I'll have to look at the options in my asrock bios now!)
What did you change to get 5.1?
 
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