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Rookie OC Results - i5 3570k

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November 7, 2012 11:07:00 PM

Hi All,
Spent a few hours Overclocking my CPU tonight and wanted to get your thoughts on the results thus far.

This is the first time I've ever overclocked anything so any comments are welcome!

ASRock Z77 Extreme4
i5-3570k
Hyper 212 EVO

I used prime95 as the benchmark and CPU-Z and Core Temp.

I started at 3.9 Ghz, lowered the voltage twice (offset -.0750) and ran the OC at 4.2 gHz.

Idle:
1.6 gHz
Core Voltage (CPU-Z): .856
Core Temps (Min): 28-31-29-26

100% Load (Prime95), 30 minutes
4.2 gHz
Core Voltage (CPU-Z): 1.120 to 1.128
Core Temp (Max): 62-67-63-59

I am still not pushing 70 with the Hyper212 so I am not too concerned with this. I had no crashes or BSoD. I will have to run this using a game, but so far so good I think.

Any thoughts/comments for this rookie?

More about : rookie results 3570k

a b à CPUs
November 7, 2012 11:48:10 PM

Temperature looks acceptable but you need to run Prime95 for longer, at least 8 hours - preferably for a whole day.

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a b à CPUs
a b K Overclocking
November 7, 2012 11:56:54 PM
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Try to bump the multiplier and go for 4.3-4.5GHz. If that doesn't work try to go minus 1 bump on the voltage offset and see if you can get 4.2GHz at a lower voltage. If 4.3GHz works on the current voltage then try to reduce that one knotch too. It's all about finding the sweet spot where you get the highest clock you can on the lowest voltage possible for that clock. Typically you will hit a point where to get to the next step in the multiplier you will need a big voltage increase. That is your sweet spot.
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November 8, 2012 12:00:01 AM

I will run on P95 for longer for sure -- just a starting point here. Tomorrow I will go for a long run.

stickg1, so far I was looking to make sure I wasn't totally off-base so far. My next step is to see if I can lower the voltage again for 4.2. Right now I am -.0750 on the offset so I could definitely try -.1000. Originally when I started at the 3.8 I dropped the voltage down to the -.0750 and then I was upping the GHz by .1 each time, without changing the voltage. I am thinking I could get 4.4 to 4.5 on less than 1.25x, but we will have to see.

Long test tomorrow, then more tweaking!
November 8, 2012 7:35:28 AM

For faster stress test use intel burn test. takes a couple minutes.

And so far soo good man. Temps look acceptable. I wouldnt go much more after you reached 4.4ghz tbh.
a b à CPUs
a b K Overclocking
November 8, 2012 10:25:58 AM

rotorite86 said:
I will run on P95 for longer for sure -- just a starting point here. Tomorrow I will go for a long run.

stickg1, so far I was looking to make sure I wasn't totally off-base so far. My next step is to see if I can lower the voltage again for 4.2. Right now I am -.0750 on the offset so I could definitely try -.1000. Originally when I started at the 3.8 I dropped the voltage down to the -.0750 and then I was upping the GHz by .1 each time, without changing the voltage. I am thinking I could get 4.4 to 4.5 on less than 1.25x, but we will have to see.

Long test tomorrow, then more tweaking!


Keep trying to go higher with clocks and lower with voltage while testing 30 minutes at time. Once you find that sweet spot THEN test for several hours to find true stability. You don't want to test every clock and every voltage for 8 hours that's a waste of time.
November 8, 2012 2:08:58 PM

Is it worth going up to 4.4GHz or more? I feel like I've heard that once you get into the low-mid 4s, there isn't much of a performance bump. I obviously have some room on temperature since I have yet to hit 70* but I am not sure I am comfortable with going much beyond 70. One core is consistently hitting 68 with the above OC so I'd have to see what the same results would be for a 4.3 or a 4.4. I assume I'd have to raise the voltage at 4.3 or 4.4 which will definitely add to my temps.

Should I do small P95 tests (like the above stated 30 mins) today and get it up to 4.4GHz, and then start tweaking voltage? I haven't crashed at all on the 4.2 at 1.128 yet but the most I've run P95 is about 1.5 hours.

Also why does a crash become more likely on a long run? Its pushing the CPU 100% of the duration and if the temperatures and voltage are maintaining, why would it crash, say, 8 hours in?

For what its worth (which isn't much) I got my WEI up to 7.7 from 7.6 with the 4.2 OC. lol
November 9, 2012 2:00:56 AM

you will find little to no performance increase in either games or day to day software. only thing that speeds up are those applications like 3d rendering or video encoding that really need those extra mhz that you will notice those perfomance increases
November 9, 2012 2:15:50 AM

So I just increased it to 4.3GHz on the -.0750 offset. I got into Windows but it immediately crashed once the desktop came up. I just raised the voltage to the -0.050 offset which puts me at 1.144-1.152. 12 minutes into Prime95 its good. Temps are (max) 65-71-67-62.

I am running Load-Line of Lvl 5. I was just reading that the general recommendation is Lvl 2 or 3. I am going to check the V-Core and see how close I get it.

More tweaking ahead! I haven't done the 8-12 hr Prime95 run yet.
November 16, 2012 7:17:26 PM

Best answer selected by rotorite86.
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