Which chipset are we discussing?
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http://www.guru3d.com/articles-pages/core-i7-3770k-and-3750-review-with-z77,13.html
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"
The procedure is as follows:
1. Leave baseclock for what it is right now
2. If optional, increase the TDP limit of your processor to 200~250 Watts
3. With a 3770K leave your base multiplier at 35
4. And now set the per core (Turbo) multiplier at a maximum of your liking, we applied an MP of 49 on all four cores
5. Increase CPU voltage, though setting AUTO might work fine, we applied 1.40V on this intel board.
6. Make sure your processor is properly cooled (we used a Noctua D12 heatpipe cooler and forced the fan to 60% RPM)
7. Save and Exit BIOS / UEFI
"
This is how this person OC using Turbo Boost:Originally Posted by nazarein
turbo boost will lower the multiplier to its norm when the CPUs at idle but I have'nt heard anyone suggest overclocking through that before. I don't believe overclocking with turbo boost is as stable at higher clock speeds, we want the numbers changing as little as possible.
http://www.guru3d.com/articles-pages/core-i7-3770k-and-3750-review-with-z77,13.html
Quote:
"
The procedure is as follows:
1. Leave baseclock for what it is right now
2. If optional, increase the TDP limit of your processor to 200~250 Watts
3. With a 3770K leave your base multiplier at 35
4. And now set the per core (Turbo) multiplier at a maximum of your liking, we applied an MP of 49 on all four cores
5. Increase CPU voltage, though setting AUTO might work fine, we applied 1.40V on this intel board.
6. Make sure your processor is properly cooled (we used a Noctua D12 heatpipe cooler and forced the fan to 60% RPM)
7. Save and Exit BIOS / UEFI
"
Quote:
But if you change the single multiplier on the main page, your CPU clock speed will be whatever you set it to at ALL TIMES. Am I right? To me, that sounds better because your clock speed would be consistently at what you set it to. Whereas through Turbo Boost, you clock speed varies from stock to OC and everywhere in between. The advantage in that is you are saving some power when CPU is at idle.Originally Posted by Forceman
Turbo Boost is always active, so there is no worry that it won't start or something.
On a Gigabyte board, the two methods you mention both work the same way. Changing the single multiplier on the main page is has the same effect as changing them all individually on the advanced page. So just use whichever you want. On other boards it may be different though.
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When you see different speeds in Windows, it's actually Windows that reduces the clock speed. The CPU and board do nothing about that by themselves. It's not about turbo. If you want it to stay at highest speed, you have to either disable the power saving features completely in the BIOS (I think it's that EIST "Enhanced Intel Speed Step"), or you have to go into the Windows power profile options and set minimum cpu speed to 100%.
I actually lied about turbo always being on. There's a power limit on the page with the turbo settings. If it goes over that power limit, it will drop to stock speed 3.4ghz or 3.5ghz.
You didn't understand it. Both are exactly the same on a Gigabyte Z77 board. Changing the single multiplier does exactly the same as going to the advance page and manually changing all four numbers to that single value. Turbo speed is actually always on, stock speed never used.Originally Posted by driedupfish
Quote:
But if you change the single multiplier on the main page, your CPU clock speed will be whatever you set it to at ALL TIMES. Am I right? To me, that sounds better because your clock speed would be consistently at what you set it to. Whereas through Turbo Boost, you clock speed varies from stock to OC and everywhere in between. The advantage in that is you are saving some power when CPU is at idle.Originally Posted by Forceman
Turbo Boost is always active, so there is no worry that it won't start or something.
On a Gigabyte board, the two methods you mention both work the same way. Changing the single multiplier on the main page is has the same effect as changing them all individually on the advanced page. So just use whichever you want. On other boards it may be different though.
When you see different speeds in Windows, it's actually Windows that reduces the clock speed. The CPU and board do nothing about that by themselves. It's not about turbo. If you want it to stay at highest speed, you have to either disable the power saving features completely in the BIOS (I think it's that EIST "Enhanced Intel Speed Step"), or you have to go into the Windows power profile options and set minimum cpu speed to 100%.
I actually lied about turbo always being on. There's a power limit on the page with the turbo settings. If it goes over that power limit, it will drop to stock speed 3.4ghz or 3.5ghz.
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Is it called the TDP limit ?
Thanks for the reply. Under what condition does it go over this power limit? Should I raise it to avoid the clock speed from throttling? If so, what's a good number?Originally Posted by deepor
You didn't understand it. Both are exactly the same on a Gigabyte Z77 board. Changing the single multiplier does exactly the same as going to the advance page and manually changing all four numbers to that single value. Turbo speed is actually always on, stock speed never used.
When you see different speeds in Windows, it's actually Windows that reduces the clock speed. The CPU and board do nothing about that by themselves. It's not about turbo. If you want it to stay at highest speed, you have to either disable the power saving features completely in the BIOS (I think it's that EIST "Enhanced Intel Speed Step"), or you have to go into the Windows power profile options and set minimum cpu speed to 100%.
I actually lied about turbo always being on. There's a power limit on the page with the turbo settings. If it goes over that power limit, it will drop to stock speed 3.4ghz or 3.5ghz.
Is it called the TDP limit ?
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So I am guessing leaving the limit at default of 77 W should be fine, as I have only OC my i5-3570k to 4.2 Ghz. You are saying even at 4.6 Ghz, yours never reach the 77 W, right? Or were you talking about that at stock speed.Originally Posted by deepor
I don't know if that's the same limit. You can check what the hardware thinks its current use is in HWINFO or HWMonitor somewhere. There are "package power" and "core power" readings.
If you leave everything on Auto on that page, and instead manage things with that single multiplier from the previous page, it should just work. If you use those four values manually, I've heard you might have to raise it. The max values are 1200W and 300A for those two settings in the BIOS.
My i5-3570k actually never gets up to those 77W that seem to be default, but I've once set the limit to something like 60W as an experiment and it definitely works. It will reduce speed to 3.4ghz for me if I run prime95 or IBT, but not for that Cinebench CPU test. This was at 4.6ghz I think. I don't know if the readings actually change with the overclock speed and voltage or are just a very rough guess. The i7-3770k probably sees different values with its hyperthreading.
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That's the settings from that time:
If you change the 34 at the top to 46 and revert everything else to Auto, it will behave the same.
This here is how to get voltage to dynamically change depending on load and go down for idle:
While I'm posting screenshots, these settings are the most important:
Those three screens were literally the whole overclocking. When it crashed, it always only needed increased vcore voltage for me, nothing else.
That was overclocked. I tried to tweak things to never go higher than a certain temperature, but it was a bit of a failure, so I gave up. I never compared with other speeds. You should check it out for yourself. I could imagine those power readings just being a guess built out of percentage of load without actually involving speed and voltage at all. HWINFO seems to have the most sensor readings to look at so I'd recommend that program.Originally Posted by driedupfish
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So I am guessing leaving the limit at default of 77 W should be fine, as I have only OC my i5-3570k to 4.2 Ghz. You are saying even at 4.6 Ghz, yours never reach the 77 W, right? Or were you talking about that at stock speed.Originally Posted by deepor
I don't know if that's the same limit. You can check what the hardware thinks its current use is in HWINFO or HWMonitor somewhere. There are "package power" and "core power" readings.
If you leave everything on Auto on that page, and instead manage things with that single multiplier from the previous page, it should just work. If you use those four values manually, I've heard you might have to raise it. The max values are 1200W and 300A for those two settings in the BIOS.
My i5-3570k actually never gets up to those 77W that seem to be default, but I've once set the limit to something like 60W as an experiment and it definitely works. It will reduce speed to 3.4ghz for me if I run prime95 or IBT, but not for that Cinebench CPU test. This was at 4.6ghz I think. I don't know if the readings actually change with the overclock speed and voltage or are just a very rough guess. The i7-3770k probably sees different values with its hyperthreading.
That's the settings from that time:
If you change the 34 at the top to 46 and revert everything else to Auto, it will behave the same.
This here is how to get voltage to dynamically change depending on load and go down for idle:
While I'm posting screenshots, these settings are the most important:
Those three screens were literally the whole overclocking. When it crashed, it always only needed increased vcore voltage for me, nothing else.
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