Sign in with
Sign up | Sign in
Your question

CPU going between 1.6 GHz and 3.7 GHz?

Last response: in Motherboards
Share
August 1, 2011 8:46:42 AM

I'm looking at the Asus AI Suite program where you can monitor CPU frequency. It seems to fluctuate between 100.3x16 and 100.3x37. The latter is when I run some beefy stuff.

My CPU is a Core i7 3.4 GHz

What exactly is this doing? Is this the EPU underclocking and overclocking the CPU to save/maximize power?

Also, I've read about ppl getting well over 4 GHz. How do you get it to do this? Do you adjust some of the sliders in the application or what?

Thanks!

More about : cpu ghz ghz

a b à CPUs
a b V Motherboard
August 1, 2011 9:02:56 AM

yes it power saving

over 4ghz would probably be best done in the bios rather than software
m
0
l
a b à CPUs
a b C Monitor
a b V Motherboard
August 1, 2011 4:37:04 PM

If you dont want to save pwoer, go to power option in control panel and select "High Performance"... When your cpu is idle/not doing anything, it'll save about probably 2-10(Even more) watts but depends how high you OC or how low it underclock... It's recommended OCing in BIOS because you dont want your computer having BSOD all the time and wasting the next 30 sec just to set it again and BSOD... BIOS is much faster+more reliable than software... NIOS well OC your System from the moment you hear the beep instead of starting the OS than OC...

BTW, If you bought a pre-build computer, dont bother with these stuff because you need a "K" series to do it... If you build your computer, you can but if you dont got a "K", dont even bother...
m
0
l
Related resources
a b Ĉ ASUS
a b à CPUs
a b C Monitor
a b V Motherboard
August 1, 2011 4:47:28 PM

Like mcnumpty said, it is just power-saving by under-clocking.

If you want to play in the world of overclocking you should read some guides on overclocking your particular generation of processor. Tom's has at least one somewhere.

Intel has a couple different things they call an "i7". One is the previous generation called Nehalem, while the other is the current called Sandy Bridge.

It looks like you've got the Sandy Bridge based 2600 or 2600k. If it's the 2600 there isn't much you can do to overclock it, but if its the 2600k, then read up on overclocking sandy bridge cpus and have fun!
m
0
l
a b à CPUs
a b C Monitor
a b V Motherboard
August 1, 2011 4:55:50 PM

larkspur said:
It looks like you've got the Sandy Bridge based 2600 or 2600k. If it's the 2600 there isn't much you can do to overclock it, but if its the 2600k, then read up on overclocking sandy bridge cpus and have fun!

I dont think he knows about computer otherwise he would figure why it's/clocks jumping around... He probably got a pre-build... He can only OC about 200MHz
m
0
l
a b Ĉ ASUS
a b à CPUs
a b C Monitor
a b V Motherboard
August 1, 2011 5:18:58 PM

legendkiller said:
I dont think he knows about computer otherwise he would figure why it's/clocks jumping around... He probably got a pre-build... He can only OC about 200MHz


Whether or not it's a pre-build would be an assumption. I saw that he's running the Asus AI app and figured there was enough of a chance that he had a bios with overclocking to offer advice.
m
0
l
a c 207 Ĉ ASUS
a b à CPUs
a c 717 V Motherboard
August 1, 2011 5:52:47 PM

Intel calls it "Enhanced Intel Speedstep® Technology" aka SpeedStep aka Dynamic Frequency Scaling. Bore yourself -> http://www.intel.com/support/processors/sb/CS-028855.ht...

ASUS EPU (Energy Processing Unit) - the controller chip monitors and throttles down/powers up - "CPU, VGA card, memory, chipset, hard drives and fan" -> http://usa.asus.com/Desktop/Features/EPU/ I've seen it also cause problem particular with the GPU.

I agree about not using AI Suite, OC a 'K' aka Unlocked CPU Ratio Sandy Bridge is extremely easy. In most cases the AI Suite has a tendency to limit the OC and worst use excessive vCore Voltage. I personally don't like ANY BIOS invasive 'writing' Apps.

Assuming the i7-2600K, it can OC to 5.0~5.3GHz+, however 4.5GHz on many 12+2 phase MOB's can be done with a vCore 1.30~1.35v but others may require 1.40v. The highest I recommend 'safely' is 1.40v above that it shortens the SB lifespan considerably.

The Stock HSF {Heat Sink Fan} is NOT recommend for you >4GHz OC. As in any OC Less Voltage = Less Heat; so you need to discover the lowest possible vCore that yeilds a stable system.

Tests:
1. Prime 95 as a "Stress Test" overnight once stable
link - http://www.mersenne.org/freesoft/

2. CPU-Z for Settings Summary
link - http://www.cpuid.com/softwares/cpu-z.html

3. CoreTemp 0.99.x
link - http://www.alcpu.com/CoreTemp/

4. Memtest86+ to check memory corruption
link - http://www.memtest.org/

In addition for Benching -> http://www.3dmark.com/
m
0
l
August 3, 2011 11:17:31 AM

I just recently upgraded my computer with these.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

http://www.newegg.com/Product/Product.aspx?Item=N82E168...


I didn't get a "K" apparently, but I wasn't thinking of over-clocking when I got it. But are you saying I kind of screwed up my purchase since I got a board with the Asus OC features, but not the CPU that goes with it? It looks like my RAM is also made to OC.

Should I uninstall ASUS AI? Does the EPU still work when you uninstall the ASUS AI software? There is a "switch" on the motherboard for both EPU and TPU, but I don't really know what they do, or wether it works without the software.
m
0
l
August 3, 2011 11:55:55 AM

Actually, now that I look at it, it seems to go up to 103.0 x 41 -> 4.2 GHz at times. Is this "bad" for my CPU since it's not "K"?
m
0
l
a c 207 Ĉ ASUS
a b à CPUs
a c 717 V Motherboard
August 3, 2011 1:19:13 PM

edit:

No, you didn't screw-up your purchase. Your non-K still has SpeedStep and the ASUS has its' EPU. The only thing that you cannot do is OC the CPU. I'd say 90%+ of those who have a 'K' don't OC it. All of my Desktops and Servers could be OC but they're not and probably never will see any OC.

Your ASUS P8P67 can run any Sandy Bridge CPU, and there's NO slow Sandy Bridge -- so please enjoy! :) 

No there's nothing to be concerned about, the Base Clock has an operational variance of 98 MHz~105 MHz.

Most importantly '1.6 GHz <=> 3.7 GHz' will save you $30~$40+/year and extent the CPU's life, and the Hybrid Sleep the same savings or more! Trust me, the power's there when you need it.
m
0
l
August 6, 2011 9:53:40 AM

What about when it goes to 4.2 GHz. Since my Core i7 2600 (not K) is not designed to be OC'ed, is it bad that the Asus Suite OC's it to 4.2 on the fly? Should I turn off the TPU? EPU?
m
0
l
a c 207 Ĉ ASUS
a b à CPUs
a c 717 V Motherboard
August 6, 2011 1:14:03 PM

Turbo Boost is more a 'marketing' than a a real benefit -- the Turbo Duration is for a tiny period of time that it has no impact. You can argue the settings either way and IMO for most users leave them Default.
m
0
l
!