What program are you using to read it?

 

I believe it has to do with how Turbo works but im not positive. Try disabling Turbo and OC with the CPU multiplier then try. Thats how my OC is setup

 

AIDA64 and CPUZ

 

what else do i disable in the bios? i have an asus p8p67 evo

 

Quote:

Originally Posted by Captain318 I believe it has to do with how Turbo works but im not positive. Try disabling Turbo and OC with the CPU multiplier then try. Thats how my OC is setup

If you disable turbo you can't OC these I thought. Since it's a ratio above stock it has to be done via the turbo function. (I may be wrong, I often am

)

 

You should be in the AI Tweaker section.. Just set the Turbo Ratio to 46x and it should go to 4.6GHz.

 

I already did but in OS it registers 3.5ghz

 

Quote:

Originally Posted by Crystal_Castles If you disable turbo you can't OC these I thought. Since it's a ratio above stock it has to be done via the turbo function. (I may be wrong, I often am )

Sure you can, you just adjust the CPU multiplier rather than the Turbo's. I just disable Turbo and do the CPU. IE im @ 4.4GHz so I type 44 for the CPU multi. 44x100=4400

 

I want to keep turbo on but why does it only say 3.5ghz with prime95?

 

Quote:

Originally Posted by Cer[v]3r I want to keep turbo on but why does it only say 3.5ghz with prime95?

From what I have read, it depends on the load across cores as to how much Turbo kicks in on a core. I don't know for sure but I just want a consistent OC so I canned Turbo lol

 

for one, it depends on how many cores are in use, so when prime 95 uses all of them it wont go to 4.5ghz. try superpi.

secondly, when it does go to its maximum turbo frequency its often for less than a second so your read wont catch it.

 

Quote:

Originally Posted by imagine2112x for one, it depends on how many cores are in use, so when prime 95 uses all of them it wont go to 4.5ghz. try superpi. secondly, when it does go to its maximum turbo frequency its often for less than a second so your read wont catch it.

The turbo on Sandybridge works all the time unlike AMD or previous Intel. Here is how Turbo works for the 2600K:

38x With 1 Core in Use
37x With 2 Cores in Use
36x With 3 Cores in Use
35x With 4 Cores in Use

If you set a manual turbo multiplier in the bios to say 46x... It becomes this:

46x With 1 Core in Use
46x With 2 Cores in Use
46x With 3 Cores in Use
46x With 4 Cores in Use

It overrides all of the stock turbo multipliers with 46 as a fixed one. This is how overclocking was intended on Sandybridge.

By default, no matter what you're doing besides idling Turbo will be in effect and at stock will run at 3.5GHz. Normally if you set the Turbo Ratio in bios to a fixed value it overrides all of the turbo multipliers for everything so regardless of how many cores are in use you get that fixed multiplier rather than a set one depending on each core.

 

so there is no way for it to jump straight to turbo when i need it?

 

Turn the turbo off.

 

Quote:

Originally Posted by Cer[v]3r so there is no way for it to jump straight to turbo when i need it?

There is, you can set manual turbo ratios depending on how many cores are in use or you can set a fixed turbo multiplier that applies regardless of how many cores in use.

Quote:

Originally Posted by KrisBKreeme Turn the turbo off.

And.. once again someone who knows nothing of Sandybridge.

 

I think your best bet if you don't want your CPU running @ 4.6GHz until you go under load, and don't want to fiddle with Turbo, Turn Turbo off, set your CPU multiplier to 46, and leave EIST on

 

I'd have to say disable the turbo as well.

 

Quote:

Originally Posted by LethalRise750 There is, you can set manual turbo ratios depending on how many cores are in use or you can set a fixed turbo multiplier that applies regardless of how many cores in use. And.. once again someone who knows nothing of Sandybridge.

I agree.

You do not want your cpu running at a constant 4.6 ghz even at idle it is a waste of power which produces more heat.

The turbo kicks in instantly when it is needed and all cores will run at the same speed if you set each individual core to 46 or the same. Goto manual tuning and adjust all 4 cores to 46

 

I set them manually but when i stress test it and use Prime95, it just goes to 3.4ghz... im confused...

 

Have you increased the vcore?

 

I followed this:

4.6Ghz Settings - 1.000v idle - 30 degrees/ 1.3v Max Load - 70 degrees max (3 weeks stable)

AI Overclock Tuner: Manual
BLCK Freq: 100.00
Turbo Ratio: Enabled (All Cores)
By All Cores: 46
Internal PLL OverVoltage: Enabled
Mem Freq: (AS PER YOUR RAM)
EPU Power Saving: Disabled

Load-Line Calibration: Regular
VRM Freq: Manual Set to 350
Phase Control: Extreme
Duty Contorl: Extreme
CPU Current Capability: 100%
CPU OverVoltage: Offset Mode
CPU Offset: + 0.070
DRAM Voltage: (AS PER YOUR RAM)
VCCSA Voltage: Auto
VCCIO Voltage: Auto
CPU PLL Voltage: Auto
PCH Voltage: Auto
CPU Spread Spectrum: Disabled
CPU Ratio: Auto
Intel Adaptive Thermal Monitor: Enabled
Intel Virtualization: Disabled
Intel SpeedStep: Enabled
Turbo Mode: Enabled
CPU C1E, C3, C6: Enabled

Still only goes to 3.4

I also tried the setting so cores cannot change in OS

 

Did u increase the Turbo Boost Power Limit as well? It may be limiting the voltage to ur CPU underload(turbo), hence you are unable to reach your full speed under blend test.

Sent from my HTC Desire using Tapatalk

 

How do i do that??
Can someone please give me their configuration for Asus P8P67 Evo?

 

Quote:

Originally Posted by Cer[v]3r;13316360
How do i do that??
Can someone please give me their configuration for Asus P8P67 Evo?

I'm not sure if you have these options in your Asus BIOS, but they are in mine (ASrock p67 extreme 4).

I have to increase these values manually in order to reach full speed under load.

 

I entered the settings you have and i still get only 3.4 ghz.. i dont understand this...

I do have the 2600k...

The cpu multiplier goes from 16 to 34 when under load