Ivybridge 3570k

[Lauralarry]

Am I the only one having trouble trying to get 4.7/4.8ghz stable? everything up to 4.6ghz is simple and I'm having no trouble! temps stay under 85c?
What's PLL voltage? usually set it at 1.7
What's Core I/O Voltage? usually leave it on Auto
what do I set those too?

And why when I create a turbo limit for a core to stop at a certain frquency the board completely ignores it and matches all the cores -_-'' Q___Q

and why is everyone obsessed with high Frequencies low voltages, That just causes crashes more than "too much voltage" at least from my testing the last couple months

I'm using the GD65 with an i5 3570k and I regret buying ivybridge

 

[AverageNinja]

Am I the only one having trouble trying to get 4.7/4.8ghz stable? everything up to 4.6ghz is simple and I'm having no trouble! temps stay under 85c?
What's PLL voltage? usually set it at 1.7
What's Core I/O Voltage? usually leave it on Auto
what do I set those too?

And why when I create a turbo limit for a core to stop at a certain frquency the board completely ignores it and matches all the cores -_-'' Q___Q

and why is everyone obsessed with high Frequencies low voltages, That just causes crashes more than "too much voltage" at least from my testing the last couple months

I'm using the GD65 with an i5 3570k and I regret buying ivybridge

Have you even read any reviews? Overclocking isn't as well as on sandy bridge. But still an 4.5GHZ 3570k has about the same performance as a 4.8GHZ 2500k. And ivybridge has some new features.
About the voltages: not every chip is the same, some overclock to 4.5GHz with extremely low voltages, and some won't even get to 4.5GHz. That's called the silicone lottery.

 

[Lauralarry]

Have you even read any reviews? Overclocking isn't as well as on sandy bridge. But still an 4.5GHZ 3570k has about the same performance as a 4.8GHZ 2500k. And ivybridge has some new features.
About the voltages: not every chip is the same, some overclock to 4.5GHz with extremely low voltages, and some won't even get to 4.5GHz. That's called the silicone lottery.

Aww so I'm lucky mine even goes past 4.5?

 

[AverageNinja]

Aww so I'm lucky mine even goes past 4.5?

Most chips go to 4.5~4.6GHz. After that the cheap Thermal Compound which is in the CPU starts to fail and the temperatures Skyrocket

 

[Lauralarry]

well I just put my i5 on ebay I don't want it anymore lol

 

[jamesriley94]

I disagree with that completely...

Pretty much every Ivybridge CPU will get to 4.5ghz easily enough - some without even raising the voltage. I have my 3770k at 4.5ghz with only 1.20v.

Just after that, temperatures increase significantly, and so you need a lot to cool it. For example, a £20 cooler like the CM 212 Evo will cool a 3570k fine at 4.5ghz (with reasonable volts), yet if raise the clock 200mhz, even an NH-D14, (over 3 times the price) will struggle to keep up.

For me, the increase in temperatures just aren't worth it for a non-noticeable performance increase.

You shouldn't regret buying Ivybridge at all. They're great chips up to about 4.5/4.6ghz. I can't think of any other chip that clocks that high so easily.

I've always left PLL and all those settings to Auto. The only thing I've changed is core voltage, and RAM voltage due to XMP.
Tbh though, if your temps are at 85 degrees, I'd say you're pushing the limits of the cooling, and I probably wouldn't want to go higher.

 

[Lauralarry]

Yeah I have really good cooling and I'm not Impressed by this praticular chip, I have an H100 with Sp120 High Performance Editions in push pull I've spent 160$ on cooling, I'm planning on buying a i7 3770k that's why I put my i5 on ebay I get 87c on core1 for a second running 4.7ghz underload but every other core stays at 79-81 so i asumed it's safe

 

[Master&Puppet]

There's nothing wrong with Ivy at all - in fact they are great little chips.

I also think you probably misunderstand turbo limits. If you set:

1-core = 46
2-core = 45
3-core = 44
4-core = 43

It does't mean that under load the first core runs at x46 and the second core will run at x45 etc...

It means that if only one core is working under load then that core only will run at x46 whilst the other three remain in a low power state. Similarly if you use only 2 threads then 2 cores will boost to x45 whilst the other two remain at rest. Meanwhile if you run an application which can use 4 threads then all 4 cores will run at x43.

This is because technology is all about performance in relation to energy use. Ivy Bridge is rated at 77w so the motherboard can only turbo cores if the overall energy required remains under this limit. For example (and I'm making up these figures for this example). If:

4 cores running at 3.4GHz = 75w.
then we can assume that 4 cores at 4.0Ghz might break the 77w limit.

Therefore to increase the core speed it shuts down 1 core and turbos the others i.e:
3 cores at 4.0Ghz + 1 cores @ 1.6Ghz = 70w.

This means that when you are using an application which doesn't require all the cores the cpu can run the application faster by increasing the clock on a few cores but still remain in the TDP limit. If you are turbo overclocking then you need to increase these power limit figures (TDP and short term power usage) or the motherboard won't do your clock if it thinks doing so will exceed the TDP.

 

[Lauralarry]

There's nothing wrong with Ivy at all - in fact they are great little chips.

I also think you probably misunderstand turbo limits. If you set:

1-core = 46
2-core = 45
3-core = 44
4-core = 43

It does't mean that under load the first core runs at x46 and the second core will run at x45 etc...

It means that if only one core is working under load then that core only will run at x46 whilst the other three remain in a low power state. Similarly if you use only 2 threads then 2 cores will boost to x45 whilst the other two remain at rest. Meanwhile if you run an application which can use 4 threads then all 4 cores will run at x43.

This is because technology is all about performance in relation to energy use. Ivy Bridge is rated at 77w so the motherboard can only turbo cores if the overall energy required remains under this limit. For example (and I'm making up these figures for this example). If:

4 cores running at 3.4GHz = 75w.
then we can assume that 4 cores at 4.0Ghz might break the 77w limit.

Therefore to increase the core speed it shuts down 1 core and turbos the others i.e:
3 cores at 4.0Ghz + 1 cores @ 1.6Ghz = 70w.

This means that when you are using an application which doesn't require all the cores the cpu can run the application faster by increasing the clock on a few cores but still remain in the TDP limit. If you are turbo overclocking then you need to increase these power limit figures (TDP and short term power usage) or the motherboard won't do your clock if it thinks doing so will exceed the TDP.

You helped me a lot thankyou, this is exactly what I needed to know