Curious about my overclock & temps

[Tim]

Just wanted to see if these temperatures ranges under load are in the green. If so, do I have room to go further? I'd like to hit 3.8 ghz, but I'm not all that great at this overclock stuff, and I haven't hit 3.8 stable yet. Any tips would be appreciated

 

[strep3241]

Those temps are perfectly fine. You should be able to hit 3.8ghz easy. What cooler are you using?

If you can't get it stable, try raising the cpu voltage in small increments.

 

[Tim]

Corsair H50, two fans.

 

[Tim]

So that I do not mistakenly push it too far, what are acceptable voltages for my CPU? (i5-760) My QPI voltage is already at 1.25.

 

[Seero]

In case you don't know, having it run without crashing or bsod this good, but you still have to check and see if the system throttles during prime95. It is clear from your prime95 that some cores are throttling during the test, meaning that the is something wrong with the voltages.

Here is an old article about this From anandtech

 

[Tim]

In case you don't know, having it run without crashing or bsod this good, but you still have to check and see if the system throttles during prime95. It is clear from your prime95 that some cores are throttling during the test, meaning that the is something wrong with the voltages.

Here is an old article about this From anandtech

I only get those types of results if I'm running other stressing programs (such as the ATI tool I have running in that screenshot)

If I run Prime95 alone, all of the cores pretty much keep pace with one another.

 

[Seero]

I only get those types of results if I'm running other stressing programs (such as the ATI tool I have running in that screenshot)

If I run Prime95 alone, all of the cores pretty much keep pace with one another.

Valid observation, I missed the fact that you are running ATI tool at the same time.

 

[betasub]

Better to run the tests separately, to fully stress the sub-systems individually. Running together, the one with lower priority is throttled and doesn't achieve full stress-test conditions.

 

[Tim]

Better to run the tests separately, to fully stress the sub-systems individually. Running together, the one with lower priority is throttled and doesn't achieve full stress-test conditions.

I fully understand that.


The only question I have right now, which I'm still trying to figure out... what's the safe maximum CPU Voltage for an i5-760?

 

[Seero]

I fully understand that.


The only question I have right now, which I'm still trying to figure out... what's the safe maximum CPU Voltage for an i5-760?

VID Voltage Range .6500V-1.400V
http://ark.intel.com/Product.aspx?id=48496

 

[Castiel]

Why are you using an 18X multi? Use the 22X

 

[Ben90]

Realtemp will say either "Hot" or "Log" under the Thermal Status if it is or has throttled while the program is running.

 

[Tim]

I'm at 3.8ghz 16 hours stable on Prime 95.

Idle Temps 30 +/- 1
Load Temps 52 +/- 1

1.225 core voltage
1.25 QPI voltage


It looks like 4ghz might be easily doable... agree?

Only question is, does 4ghz really accomplish anything that I can't have at 3.8ghz besides bragging about it?

 

[Seero]

I'm at 3.8ghz 16 hours stable on Prime 95.

Idle Temps 30 +/- 1
Load Temps 52 +/- 1

1.225 core voltage
1.25 QPI voltage


It looks like 4ghz might be easily doable... agree?

Only question is, does 4ghz really accomplish anything that I can't have at 3.8ghz besides bragging about it?

Nope.

 

[Ben90]

It really doesn't change performance, but when BIOS says "Intel Core i5 760 @ 2.8 Speed 4.00GHz" it just looks better.

 

[Tim]

It really doesn't change performance, but when BIOS says "Intel Core i5 760 @ 2.8 Speed 4.00GHz" it just looks better.

So that being said.... What overclocks DO make a difference?
Is there a chart somewhere with a point of diminishing returns marked?

I was running this at 3.4ghz for a couple of months.
I just put it up to 3.6ghz for a few days, and now I'm sitting at 3.8ghz.

Was I better off hovering around 3.4ghz?

 

[Blitz KriegeR]

The answer to that question varies greatly depending upon application/system config/personal setup etc.

The best answer is to OC A) where you feel most comfortable and/or B) the "sweet spot" for voltage/speed/temps. What I mean by this is that will reach a point where each step in clockspeed needs an increasing amount of voltage for stability. Once this gets unreasonable it's a good time to settle. For example, you may need only an extra *.03v for 3.4 -> 3.6, but an extra .10v for 3.8 -> 4.0.

*Please note the above numbers are fictional.

Cheers!