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i5-750 OC to 3.6 data

1851 Views 10 Replies 6 Participants Last post by  mraviator, 
M
Just wanted to share my first OC success. Maybe the data points will be helpful to someone looking for a similar goal.

See the system in my sig. I brought the i5-750 to 3.6 using a 20x180 setup and leaving the VCore untouched (CPU-Z reports it at 1.28V). Realtemp and Coretemp both report the full load temps at 65C, idle at 39C, pretty much across all cores. After 1.5 hours of Prime95, things are still stable, but too early to call it good.
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mtbiker033
Nice post, please update it after your p95 run. I ordered an i5/750 yesterday and am looking for peoples experiences oc'ing them.

Thanks!
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E
nice, you can def. get more out of it though if you don't mind raising the Vcore. good luck!
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M
Well, after 6+ hours of P95 at 100%, the temps never went above 68C (happened in the first 30 minutes of the run), and the overall average was 65C. I'm using both Coretemp and Realtemp, bot gave same results. No errors with P95. I might run a longer version of it in the future, but this is good enough for me for now.

BTW, for those looking into OCing the i5-750, but sure to check out this short YouTube clip on it:




YouTube- Intel Core i5 Overclocking Tutorial Part 2 (NCIX Tech Tips #48.5)


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Quote:


Originally Posted by mraviator
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Just wanted to share my first OC success. Maybe the data points will be helpful to someone looking for a similar goal.

See the system in my sig. I brought the i5-750 to 3.6 using a 20x180 setup and leaving the VCore untouched (CPU-Z reports it at 1.28V). Realtemp and Coretemp both report the full load temps at 65C, idle at 39C, pretty much across all cores. After 1.5 hours of Prime95, things are still stable, but too early to call it good.

You maybe able to lower the vcore to around 1.21 even. I have mine running stable @ 3.57 with vcc 1.21.
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M
Quote:


Originally Posted by vincentmoy
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You maybe able to lower the vcore to around 1.21 even. I have mine running stable @ 3.57 with vcc 1.21.


Going to have to try that, thanks!
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M
Hmmm.... a little confused. I went into the BIOS to play with VCore, and it says it's at 1.168V. But CPU-Z shows it at 1.328V (at idle). And I know during the stressing at 100% load, it was showing 1.28V.

I guess I'm missing something here...granted, I have not exactly read too much about the different voltages and how it all works...
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R
I've also been testing all kinds of setups for a stable i5 overclock to about 3.6ghz.

I've tried 200x18 only changing VCore to 1.225V (Disabling turbo, Vdroop, spread spectrum) with a 4 multiplier lets my ram run at 1600mhz (what it's spec'ed at)
That setup Passed 10 passes of Linx and Inelburntest with 2 gigs of ram, also 7 hrs of prime95 small fft.

Also I've been trying a 172x21 at 1.250V vcore which makes the ram run at 1720Mhz.
So far I have run 100 pases of intelburntest with 2 gigs of ram and it passed. Going to run prime95 or OCCT small files tonight.
Is overclocking ram that is supposed to only run at 1600mhz safe in the long run? (I am using 1.65V)

Also which of these 2 overclocks is safer for the long term if they both pass? Since i'm not going over 1.25V is it like I am not Overclocking at all?

(I tried just firing up the board with all the default settings and the readings in cpuz for vcore were from 1.2v-1.4v)
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Quote:


Originally Posted by mraviator
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Hmmm.... a little confused. I went into the BIOS to play with VCore, and it says it's at 1.168V. But CPU-Z shows it at 1.328V (at idle). And I know during the stressing at 100% load, it was showing 1.28V.

I'm new like you but from what I've noticed myself and what I've seen from screenshots from a lot of articles on the net are that CPU-Z readings are usually lower than the setting in bios. your Vcore may be changing because you have Vdroop/Load Line calibration enabled.
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Salami991
I found that with LLC disabled it was sending my vcore down by at most 0.4v in IBT, enabled it and now it increases vcore at most by 0.08v.
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M
I disabled LLC in my setup.
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