Go Back   Hardware Canucks > PC BUILDERS & TWEAKERS CORNER > Overclocking, Tweaking and Benchmarking

    
Reply
 
LinkBack Thread Tools Display Modes
  #11 (permalink)  
Old May 7, 2014, 06:46 PM
3.0charlie's Avatar
3.0 "I kill SR2's" Charlie
F@H
 
Join Date: May 2007
Location: Laval, QC
Posts: 9,933

My System Specs

Default

It's always interesting to note how users always look for the high OC.... when under-volting and OC'ing can bring in surprises at times.
__________________
Hydro-Quebec is salivating...
Reply With Quote
  #12 (permalink)  
Old May 7, 2014, 08:40 PM
ZZLEE's Avatar
Hall Of Fame
F@H
 
Join Date: May 2009
Location: KANATA
Posts: 2,407

My System Specs

Default

TTL over on OC3D

is great enthusiast of manual fixed voltages on CPU's

all his benches are done on fixed voltage.
__________________
"EVGA hunted down the last dozen or so expats living in Karachi." SKY
Reply With Quote
  #13 (permalink)  
Old May 9, 2014, 06:38 AM
Bond007's Avatar
Hall Of Fame
 
Join Date: Jun 2009
Location: Down under
Posts: 4,451

My System Specs

Default

That's it for now folks. My quest to get more for my wattage has come to an end for my 3570k. I will write my findings in case anyone else ever has similar goals with their CPU. All testing was done with all power saving features enabled, but turbo boost disabled (this setup allowed for voltage and clock rate to vary as required, but regardless of how many cores were being used the CPU could clock up to the selected speed). Power consumption was check with prime95 and a blue planet power meter checking total system power consumption from the wall.

To summarize, I tested quite a bit of fixed voltage and offset voltage for speeds between 3.6 and 4.2ghz. Overall I focused more in the 4-4.2ghz range as I was trying to optimize power while getting a small performance boost of atleast 4.0ghz. For my 3570k if I was going to be happy with sub 4ghz or wanted to focus solely on power consumption and peak efficiency it would be in my best interest (for heat/power consumption) to maintain a fixed voltage less than 1 volt. Doing this resulted in a negligible increase in power consumption while the CPU was idle (at most 2watts), but a decent decrease in power use under load. This was due to the fact that using offsets I could not get voltage as low at load without causing issues with voltage being too low at idle.

I required approx 1.03v for 4.0, 1.08v for 4.1, and 1.12v for 4.2ghz.

In the end I decided on the 4.1ghz setup mentioned in one of my prior posts usings offset voltage to keep idle power down and it has voltage down between 0.888v and 0.900v at idle, and rock solid at 1.092v under load. It seems to be the best comprimise using offset for keeping idle voltage as low as possible and stable near 0.9, while having load voltage close to the minimum required to keep it stable.

Using offset at 4.0ghz load voltage was staying the same as for 4.1, so that was wasted power. And using offset and 4.2ghz meant I had to accept idle voltage around 0.92 (not a big deal) and load voltage around 1.14 (again these are higher than required for stability).

All bios settings changed are:
- PLL voltage dropped from 1.8 to 1.6.
- Turbo boost off.
- CPU multiplied changed to 41.
- voltage offset -0.15 (at one point I had -0.155, but it caused an idle instability eventually)
- load line calibration on standard (I think there are 7 levels to LLC on my MOB, and this is the 2nd lowest setting. The lowest didn't help drop vcore under load. I kept it low to allow vdroop to keep load voltage closer to what was required...increasing it raises voltage under load).

I think that's all. Next up on the optimization list is hopefully get my memory OC'd without raising voltage...we will see.
__________________
Desktop: Arc Midi R2, Z77-D3H, 3570K 1.09v/4.1ghz with Zalman Optima Cooler, Corsair Vengeance 2x4gb@1866mhz, XFX R9 280X DD, Bitfenix Fury 750w, WD Black 1TB, Intel 530 120GB
Away from home light Gamer: Acer Aspire 15.6", A8-3500m undervolt and OC to 2Ghz, 2x4gb Corsair Vengeance, Crucial M500 240gb
Reply With Quote
  #14 (permalink)  
Old November 12, 2014, 11:30 AM
ChiliCheese's Avatar
Rookie
 
Join Date: Nov 2014
Posts: 20

My System Specs

Default

I know this thread is from May but it really is an interesting topic... especially since I have the same CPU.
If you still have it running on that OC and Voltage, could you tell me what temps you get idle, under a realistic load and in prime95?

My own overclock is more aimed at achieving a high clock speed (4.6Ghz at 1.2v, 75%LLC) but i never really tried getting it to the lowest possible voltage while maintaining the clock speed.
__________________
Thinking about building a server for PLEX...//i5 3570k @ 4.6Ghz
Reply With Quote
  #15 (permalink)  
Old November 12, 2014, 01:30 PM
Bond007's Avatar
Hall Of Fame
 
Join Date: Jun 2009
Location: Down under
Posts: 4,451

My System Specs

Default

Quote:
Originally Posted by ChiliCheese View Post
I know this thread is from May but it really is an interesting topic... especially since I have the same CPU.
If you still have it running on that OC and Voltage, could you tell me what temps you get idle, under a realistic load and in prime95?

My own overclock is more aimed at achieving a high clock speed (4.6Ghz at 1.2v, 75%LLC) but i never really tried getting it to the lowest possible voltage while maintaining the clock speed.
I am still running the same OC. I actually thought about going for a higher OC last night, but I really don't need more (it's not limiting me in anything)...so I decided to keep it as is. I can get you some temps later tonight.
__________________
Desktop: Arc Midi R2, Z77-D3H, 3570K 1.09v/4.1ghz with Zalman Optima Cooler, Corsair Vengeance 2x4gb@1866mhz, XFX R9 280X DD, Bitfenix Fury 750w, WD Black 1TB, Intel 530 120GB
Away from home light Gamer: Acer Aspire 15.6", A8-3500m undervolt and OC to 2Ghz, 2x4gb Corsair Vengeance, Crucial M500 240gb
Reply With Quote
  #16 (permalink)  
Old November 12, 2014, 02:56 PM
ChiliCheese's Avatar
Rookie
 
Join Date: Nov 2014
Posts: 20

My System Specs

Default

Quote:
Originally Posted by Bond007 View Post
I am still running the same OC. I actually thought about going for a higher OC last night, but I really don't need more (it's not limiting me in anything)...so I decided to keep it as is. I can get you some temps later tonight.
Great I'd really like to compare the temps. I hit about 72C under load (in handbrake, encoding video files) and 82C in p95 small ftts. Idle is around 36-40C.
My cpu fan is an enermax ets-t40.
__________________
Thinking about building a server for PLEX...//i5 3570k @ 4.6Ghz
Reply With Quote
  #17 (permalink)  
Old November 12, 2014, 03:32 PM
Bond007's Avatar
Hall Of Fame
 
Join Date: Jun 2009
Location: Down under
Posts: 4,451

My System Specs

Default

Off hand I know my temps are lower then that, and my cooler isn't quite as good as yours, but I will get you some exact temps later
__________________
Desktop: Arc Midi R2, Z77-D3H, 3570K 1.09v/4.1ghz with Zalman Optima Cooler, Corsair Vengeance 2x4gb@1866mhz, XFX R9 280X DD, Bitfenix Fury 750w, WD Black 1TB, Intel 530 120GB
Away from home light Gamer: Acer Aspire 15.6", A8-3500m undervolt and OC to 2Ghz, 2x4gb Corsair Vengeance, Crucial M500 240gb
Reply With Quote
  #18 (permalink)  
Old November 12, 2014, 05:45 PM
Bond007's Avatar
Hall Of Fame
 
Join Date: Jun 2009
Location: Down under
Posts: 4,451

My System Specs

Default

Quote:
Originally Posted by ChiliCheese View Post
Great I'd really like to compare the temps. I hit about 72C under load (in handbrake, encoding video files) and 82C in p95 small ftts. Idle is around 36-40C.
My cpu fan is an enermax ets-t40.
20 deg room. Fan on a custom profile that keeps RPM relatively low. Zalman Optima cooler with the stock single 120mm fan (performance from what I have read is a bit under a hyper 212+...yours should be better).

P95 small ftts after 10 minutes had temps relatively stable with peaks at 47-54 degrees (coolest to hottest core...wish I could get them closer together in temps) with 1333 rpm. Obviously if I upped the fan speed I could lower temps more.

5 minutes after finishing the p95 run temps were hovering around 24-25 degrees with peaks of 26-27 recorded, and 1130 rpm.
__________________
Desktop: Arc Midi R2, Z77-D3H, 3570K 1.09v/4.1ghz with Zalman Optima Cooler, Corsair Vengeance 2x4gb@1866mhz, XFX R9 280X DD, Bitfenix Fury 750w, WD Black 1TB, Intel 530 120GB
Away from home light Gamer: Acer Aspire 15.6", A8-3500m undervolt and OC to 2Ghz, 2x4gb Corsair Vengeance, Crucial M500 240gb

Last edited by Bond007; November 12, 2014 at 05:56 PM.
Reply With Quote
  #19 (permalink)  
Old December 7, 2014, 06:47 PM
Bond007's Avatar
Hall Of Fame
 
Join Date: Jun 2009
Location: Down under
Posts: 4,451

My System Specs

Default

Minor update.

I couldn't take looking at the odd number of 4.1ghz anymore (that's my excuse anyway...and I am sticking too it).

Just fiddled with getting back to an even 4.2ghz. Running offset -0.145v and LLC up a couple notches to medium (think its the 3rd or 4th of 7 steps in LLC on my MOB), and all seems to be stable @4.2. It gives me 0.912v at idle and 1.116v under load. Remainder of the settings are as per post 13.
__________________
Desktop: Arc Midi R2, Z77-D3H, 3570K 1.09v/4.1ghz with Zalman Optima Cooler, Corsair Vengeance 2x4gb@1866mhz, XFX R9 280X DD, Bitfenix Fury 750w, WD Black 1TB, Intel 530 120GB
Away from home light Gamer: Acer Aspire 15.6", A8-3500m undervolt and OC to 2Ghz, 2x4gb Corsair Vengeance, Crucial M500 240gb

Last edited by Bond007; December 7, 2014 at 07:12 PM.
Reply With Quote
  #20 (permalink)  
Old December 19, 2014, 09:26 PM
Cptn Vortex's Avatar
Hall Of Fame
F@H
 
Join Date: May 2007
Location: Vancouver
Posts: 4,000
Default

I thought I would try MSI's one button "OC Genie" today. As it turns out it loves 4.5GHZ @ 1.112v under full load, completely stable. This 3770k is a gem!
__________________
The Vortex H20

Coolermaster ATCS 840 w Window panel
Asus X99-E WS/USB 3.0
i7-5820K
3 x GTX 1070
4x4GB Corsair LPX 2666MHZ
OCZ Z-Series GOLD 850W
2 x 240GB Patriot Blaze SSD RAID0 :)
HP OMEN 32 1440p 75hz

Benq W1070 Pojector.

Watercooling:
EK Supreme HF, MCR320+Gelid Silent 12 Push/Pull, DD Pump, EK Multioption 100ml Res, EK Coolstream XT 220 RAD Gelid Wings Push/Pull.
Reply With Quote
Reply


Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
PC on i5-3570K Danio Price Check 4 August 26, 2013 05:11 AM
3570k pc poroporo Price Check 5 October 11, 2012 05:59 AM
Help with 3570K OC uberness Overclocking, Tweaking and Benchmarking 3 July 8, 2012 04:45 AM
Pump is just too loud, can yo undervolt? donimo Water Cooling 25 March 13, 2009 07:12 PM