Author Topic: Under-utilized CPU  (Read 3328 times)

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Offline tp4tissue

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Under-utilized CPU
« on: Sat, 17 November 2012, 09:53:07 »
It seems most people use Speed Step...

WHY.......


The difference between my 5ghz and 1.6ghz in Power usage on IDLE  is 30watts...

My system feels significantly more snappy at 5ghz..

Confirmed by Intel, Ivy Bridge can take 1.4v Straight up 24/7 for 2 years assuming 70% full load.

Sandy can take even slightly higher voltage than IVY..

I run 5ghz without ever ramping down...

Offline bear95

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Re: Under-utilized CPU
« Reply #1 on: Sat, 17 November 2012, 10:40:44 »
"Significantly more snappier"?
From what I know most people don't...

Quick reference,
http://www.overclock.net/t/1185458/does-speedstep-really-have-zero-performance-decrease

Offline absyrd

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Re: Under-utilized CPU
« Reply #2 on: Sat, 17 November 2012, 10:46:39 »
I can't tell the difference while doing work, writing, net browsing, etc. I actually undervolt as much as I can as I'd rather save the energy.
My wife I a also push her button . But now she have her button push by a different men. So I buy a keyboard a mechanicale, she a reliable like a Fiat.

Offline bear95

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Re: Under-utilized CPU
« Reply #3 on: Sat, 17 November 2012, 10:47:16 »
EDIT: Read op wrong.

Offline nullstring

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Re: Under-utilized CPU
« Reply #4 on: Sat, 17 November 2012, 11:15:11 »
I can't tell the difference while doing work, writing, net browsing, etc. I actually undervolt as much as I can as I'd rather save the energy.

Agreed with this. I can't tell the difference.
In fact, I would postulate that this is a placebo effect.

Also, I want my computer to last far longer than 2 years.

(Sandy bridge 4.9Ghz here)

Offline tp4tissue

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Re: Under-utilized CPU
« Reply #5 on: Sat, 17 November 2012, 11:57:01 »
I can't tell the difference while doing work, writing, net browsing, etc. I actually undervolt as much as I can as I'd rather save the energy.

Agreed with this. I can't tell the difference.
In fact, I would postulate that this is a placebo effect.

Also, I want my computer to last far longer than 2 years.

(Sandy bridge 4.9Ghz here)

This is not placebo, the system has significantly MORE bandwidth at full throttle, it will respond faster.

Also, exactly "what" are you saving your processor for? There's no rainy day when it'll be your only computer.

When the Silicon "does degrade" it will merely overclock a hundred maybe two hundred mhz less. Not a huge deal.


And on the subject of time frame..  My computer spends about 5%-10% of the time at moderately high load within 12 hours per day, I've never used full load with anything that I do on my PC.... There are very few programs that actually push the CPU to 100%..

THUS, if we use the INTEL numbers,   @ 1.4v, 100% load, for 70% of 2 years, is 511 days (24/7)

At my pace, 12 hours a day, and only 7.5% of the time with full load,    This processor should theoretically last me FOREVER, it's not even worth calculating


Offline Lanx

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Re: Under-utilized CPU
« Reply #6 on: Sat, 17 November 2012, 12:01:04 »
save energy why not, pretty sure the "snappier feeling" is just you having a placebo effect like others have said, i basically have the same pheneom 2's in mine and the wifes computer, mine is constantly doing something, so i don't bother to have it underclocked (it's always at least 25% utilized cuz of some programs), her's if she isn't playing diablo is 2% the snap from 800mhz to 2.6 is like amazing. (edit i just checked seems i have mine at 3.5, oh well).

Offline tp4tissue

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Re: Under-utilized CPU
« Reply #7 on: Sat, 17 November 2012, 12:02:42 »
"Significantly more snappier"?
From what I know most people don't...

Quick reference,
http://www.overclock.net/t/1185458/does-speedstep-really-have-zero-performance-decrease

Whether or not you "feel" a difference, that is incidental and subjective, as you might just be a slow person, or don't care....   

However, "is" the computer significantly faster and more responsive, "YES", this is a fact.

I have 2133mhz ram right now..  When my CPU is clocked at 1.6ghz my memory bandwidth is CUT by more than Half..  >:D

5ghz all the way....

Offline bear95

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Re: Under-utilized CPU
« Reply #8 on: Sat, 17 November 2012, 12:10:08 »
But that's when you're at idle. What's the point of being in a performance state when you're not doing anything intensive? You're memory bandwidth is cut by half but its not as if it is bottlenecking anything. When you actually need the bandwith you're probably not at idle anymore and you're cpu is going to clock itself back up to 5ghz.

Offline tp4tissue

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Re: Under-utilized CPU
« Reply #9 on: Sat, 17 November 2012, 12:14:13 »
But that's when you're at idle. What's the point of being in a performance state when you're not doing anything intensive? You're memory bandwidth is cut by half but its not as if it is bottlenecking anything. When you actually need the bandwith you're probably not at idle anymore and you're cpu is going to clock itself back up to 5ghz.

Question is, "why wait" for any of this BS...

The electric use difference is negligible with respect to income

The wear and tear is INTEL confirmed to "LAST FOREVER"


There's absolutely NOTHING to lose, NOTHING at risk.

And honestly, the Depreciation cost of the Processor due to innovation FAR exceeds any potential operational savings.


Again, it's a "why?" / "why not?"  situation

Offline absyrd

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Re: Under-utilized CPU
« Reply #10 on: Sat, 17 November 2012, 12:26:17 »
After doing the whole overclocking and benchmarking thing from air to water to dry ice, I found myself wondering "why?" after the initial learning/fun phase.

Now I enjoy undervolting and using less energy, making less noise (completely silent pc), less heat. It has nothing to do with it costing less "with respect to income". It does, however, lighten a miniscule load on my conscience when it comes to consumption.
My wife I a also push her button . But now she have her button push by a different men. So I buy a keyboard a mechanicale, she a reliable like a Fiat.

Offline tp4tissue

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Re: Under-utilized CPU
« Reply #11 on: Sat, 17 November 2012, 12:26:42 »
save energy why not, pretty sure the "snappier feeling" is just you having a placebo effect like others have said, i basically have the same pheneom 2's in mine and the wifes computer, mine is constantly doing something, so i don't bother to have it underclocked (it's always at least 25% utilized cuz of some programs), her's if she isn't playing diablo is 2% the snap from 800mhz to 2.6 is like amazing. (edit i just checked seems i have mine at 3.5, oh well).

I'm merely saying, NOT using the processor to the fullest, is like when people buy cloth that they NEVER wear.

Key point, "Toys were meant to be Played with."  :eek:

Offline tp4tissue

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Re: Under-utilized CPU
« Reply #12 on: Sat, 17 November 2012, 12:29:07 »
After doing the whole overclocking and benchmarking thing from air to water to dry ice, I found myself wondering "why?" after the initial learning/fun phase.

Now I enjoy undervolting and using less energy, making less noise (completely silent pc), less heat. It has nothing to do with it costing less "with respect to income". It does, however, lighten a miniscule load on my conscience when it comes to consumption.


Yes, saving natural resources is "important", but that "every bit counts" mentality is just MARKETING, and quite childish....

If you really had any intention to make a difference, you've put it in the WRONG place....

Offline FoxWolf1

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Re: Under-utilized CPU
« Reply #13 on: Sat, 17 November 2012, 13:12:39 »
*shrug* If you see a benefit to keeping your CPU at maximum speed all the time, then go for it. For myself, I really don't see any difference in "snappiness"...if you were to set my system one way or the other and then ask me to guess which it was based on some general use, I doubt I'd be able to do any better than pure chance. So I don't see any advantage to keeping my processor at full speed all the time; might as well save the energy and make things a little easier on my air conditioning in the summer.

Also, I don't see the relevance of the "two year" figure that keeps coming up in this thread. To me, a two-year-old computer is still basically "new", not at the end of its life. I'll be damned if I let the tech industry force me to upgrade frequently, to the benefit of their profits, when what I already have is perfectly capable of meeting my needs. I don't like the cycle that these companies create, where "progress" means that you need to buy new software periodically just to do the exact same thing that your old software was already doing, but to use the new software, you need new hardware, which then has difficulty running your other old software, so you have to upgrade that software as well...all when, if others had just left things alone, you wouldn't have had any reason to spend a cent.
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Offline Lanx

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Re: Under-utilized CPU
« Reply #14 on: Sat, 17 November 2012, 13:22:03 »
computers last a long time lol, i've had my htpc on for 6 years? overclocked and it's a athlon x2 3800, plays everything just fine, of course it goes idle (into s3 mode) cuz the tv's not always on, but why have it full tilt for 95% of the time it's not on?

I'm also the kind to put every outlet into a surge and turn it off when not in use cuz of phantom power tho.

Offline tp4tissue

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Re: Under-utilized CPU
« Reply #15 on: Sat, 17 November 2012, 16:09:41 »
computers last a long time lol, i've had my htpc on for 6 years? overclocked and it's a athlon x2 3800, plays everything just fine, of course it goes idle (into s3 mode) cuz the tv's not always on, but why have it full tilt for 95% of the time it's not on?

I'm also the kind to put every outlet into a surge and turn it off when not in use cuz of phantom power tho.

Pennies are not worth saving relative to a single person.. this is reality.

Offline nullstring

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Re: Under-utilized CPU
« Reply #16 on: Sat, 17 November 2012, 16:12:14 »
But that's when you're at idle. What's the point of being in a performance state when you're not doing anything intensive? You're memory bandwidth is cut by half but its not as if it is bottlenecking anything. When you actually need the bandwith you're probably not at idle anymore and you're cpu is going to clock itself back up to 5ghz.

Question is, "why wait" for any of this BS...

The electric use difference is negligible with respect to income

The wear and tear is INTEL confirmed to "LAST FOREVER"


There's absolutely NOTHING to lose, NOTHING at risk.

And honestly, the Depreciation cost of the Processor due to innovation FAR exceeds any potential operational savings.


Again, it's a "why?" / "why not?"  situation

Theres more to this than you think:
Low voltage:
  • Temperatures constantly near 32C
  • CPU fan is OFF on idle
  • Power usage and CPU stress of leaving computer on 24/7 in minimalized
  • No noticeable performance degradation from my point of view. (I ran a test a second ago, nothing)

High voltage:
  • Temperatures constantly high, which is also stressful to the CPU
  • Higher noise as CPU fan must be on
  • I run my CPU at a higher voltage than yours, 1.48V for 24 hours a day will stress the cpu quite a bit no matter what load it's at during this period
  • I expect my computers to last 6 or 7 years. My last computer, opteron 165, was losing it's stability slowly. You know how annoying this is to deal with? And that computer had powernow enabled for almost all it's life

Offline tp4tissue

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Re: Under-utilized CPU
« Reply #17 on: Sat, 17 November 2012, 16:23:01 »
But that's when you're at idle. What's the point of being in a performance state when you're not doing anything intensive? You're memory bandwidth is cut by half but its not as if it is bottlenecking anything. When you actually need the bandwith you're probably not at idle anymore and you're cpu is going to clock itself back up to 5ghz.

Question is, "why wait" for any of this BS...

The electric use difference is negligible with respect to income

The wear and tear is INTEL confirmed to "LAST FOREVER"


There's absolutely NOTHING to lose, NOTHING at risk.

And honestly, the Depreciation cost of the Processor due to innovation FAR exceeds any potential operational savings.


Again, it's a "why?" / "why not?"  situation

Theres more to this than you think:
Low voltage:
  • Temperatures constantly near 32C
  • CPU fan is OFF on idle
  • Power usage and CPU stress of leaving computer on 24/7 in minimalized
  • No noticeable performance degradation from my point of view. (I ran a test a second ago, nothing)

High voltage:
  • Temperatures constantly high, which is also stressful to the CPU
  • Higher noise as CPU fan must be on
  • I run my CPU at a higher voltage than yours, 1.48V for 24 hours a day will stress the cpu quite a bit no matter what load it's at during this period
  • I expect my computers to last 6 or 7 years. My last computer, opteron 165, was losing it's stability slowly. You know how annoying this is to deal with? And that computer had powernow enabled for almost all it's life


THE computer should always Wait for YOU, not the other way around... and clocking as high as you can as often as you can Goes closer to this ideal, especially when the resource expended in this way is negligible relative to earnings.

Temperatures are not significantly higher at IDLE even when at 5ghz.. My idle temperatures are 10 C higher, which is from 27C to 37 C on the hottest core.....

Noise is barely a factor, My GPU is significantly louder.

1.48v is just fine for sandy.

I don't care about the CPU losing stability slowly.... This is something I want to use and RUN INTO THE GROUND....

And then guess what, I'll buy another one....

Using a 6-7 year old computer is actually Stupid, because in most cases you'd be losing significant productivity waiting for the computer...