WinFix: i7 owners Win7 by default is crippling our CPU's

garikfox

i7 owners this is a must read below

http://www.overclock.net/t/1250666/w...pling-our-cpus

XBEAST · *Last edited by XBEAST; 04-30-2012 at 20:53.*

This is for HT CPUs only? Oh, just read comments. Nevermind.

Any performance comparisons with on/off?

EDIT: but core parking is not just for i7. This should work for other CPUs as well. Gonna test it out.

UZ7 · 04-30-2012, 20:56 | posts: 5,020 | Location: Everyday Rain Florida

Quote:

Originally Posted by XBEAST

This is for HT CPUs only? Oh, just read comments. Nevermind.

Any performance comparisons with on/off?

Yeah this is mostly for HT CPUs or CPUs with a lot of cores (BD). This has been out for a long time.

You wont really see much performance difference, it basically just turns on the idle threads to run and spreads out the load evenly instead of actually waiting for 100% load. When BF3 first came out it had a hitching/slight lag issue with the i7s, this was primarily the cause of that till they patched it up. I could see this mostly benefiting programs that use multiple threads or when you're casting/live streaming etc.. as for temps it should increase it slightly.

Xzibit · 04-30-2012, 21:02 | posts: 4,383 | Location: Europe

Quote:

Originally Posted by UZ7

Yeah this is mostly for HT CPUs or CPUs with a lot of cores (BD). This has been out for a long time.

You wont really see much performance difference, it basically just turns on the idle threads to run and spreads out the load evenly instead of actually waiting for 100% load. When BF3 first came out it had a hitching/slight lag issue with the i7s, this was primarily the cause of that till they patched it up. I could see this mostly benefiting programs that use multiple threads or when you're casting/live streaming etc.. as for temps it should increase it slightly.

So, nothing cool for games, right?

---TK--- · 04-30-2012, 21:05 | posts: 14,730 | Location: New Jersey, USA

heck just dl the core parking utility. see how it goes.
no reg edits
http://www.coderbag.com/Programming-...arking-Utility

UZ7 · 04-30-2012, 21:13 | posts: 5,020 | Location: Everyday Rain Florida

Quote:

Originally Posted by Xzibit

So, nothing cool for games, right?

Haha not really, but if you feel that a game is hitching or slightly lagging but everything else is good on your end then it may be the HT trying to kick in, hence why a previous alternative was to disable HT when playing BF3.

But as far as games taking advantage of them its all up to the game as most of them don't even utilize 4 cores

.

dsbig · *Last edited by dsbig; 05-01-2012 at 08:05.*

didnt I already bring up this information once before?

http://forums.guru3d.com/showthread.php?t=358838

Li4m79 · 05-01-2012, 08:23 | posts: 4,693 | Location: Scotland

Quote:

Originally Posted by dsbig

didnt I already bring up this information once before?

http://forums.guru3d.com/showthread.php?t=358838

yes you did i remember that....

morbias · **Memory**: 6GB HyperX @1600 6-7-6-18

You can do this on Vista as well (if anyone other than me is still using it), but different reg paths iirc....

BLEH! · **Memory**: 24GB @ 1600 @ 9-10-9-27

Can just turn HT off. I never found any benefit to it anyway aside from being an extra source oh heat.

XBEAST · 05-01-2012, 18:05 | posts: 1,444 | Location: Unknown

Quote:

Originally Posted by BLEH!

Can just turn HT off. I never found any benefit to it anyway aside from being an extra source oh heat.

HT does improves performance in some applications. Some need to be configured properly to make use of it (7-Zip, etc.).

I'm sure there are some "gurus" who bought, say, i7 2600K and disabled HT. In the end they got a i5 2500K for the price of i7 2600K.

BLEH! · **Memory**: 24GB @ 1600 @ 9-10-9-27

Quote:

Originally Posted by XBEAST

HT does improves performance in some applications. Some need to be configured properly to make use of it (7-Zip, etc.).

I'm sure there are some "gurus" who bought, say, i7 2600K and disabled HT. In the end they got a i5 2500K for the price of i7 2600K.

Nearly, but with a bit more cache and a slightly higher stock multi, so probably a better chip overall.

garikfox · 05-01-2012, 18:25 | posts: 1,033 | Location: Arizona

Which cores is it parking on your CPU's guys ?

It seems to park non HT cores aswell

Example: Before I disabled core parking I had 1,3,6,7 parked then after a restart it parked 1,3,5,7

XBEAST · *Last edited by XBEAST; 05-01-2012 at 19:11.*

Quote:

Originally Posted by BLEH!

Nearly, but with a bit more cache and a slightly higher stock multi, so probably a better chip overall.

Stock multi means nothing since it's a K model and 100$ for 2MB L3 cache is just ridiculous.

UZ7 · 05-01-2012, 20:27 | posts: 5,020 | Location: Everyday Rain Florida

Quote:

Originally Posted by BLEH!

Nearly, but with a bit more cache and a slightly higher stock multi, so probably a better chip overall.

HT does give a little more juice out of the cores giving it an extra thread per core, those programs/games who utilize them will benefit. As for overclockers like most of us it wont matter about multi since K series are unlocked. Regardless of everything both are still quad core CPUs.

sykozis · 05-01-2012, 22:24 | posts: 13,495 | Location: US East Coast

How many times are threads about core parking going to popup?

I tried disabling core parking on an i7 870 and my i5 2400....in neither case was there any performance gain from doing so.

The system only "parks" unused cores. There is no gain from leaving cores active if they're not processing anything. If a thread is assigned to the core, it won't park. If you have 1 thread running, there's no reason to have 3 unused, active cores. The cores will wake up fast enough to negate any loss from them being parked.

djjonastybe · 05-02-2012, 08:29 | posts: 724 | Location: Belgium

Quote:

Originally Posted by ---TK---

heck just dl the core parking utility. see how it goes.
no reg edits
http://www.coderbag.com/Programming-...arking-Utility

That is a reg edit actually...

HKEY_LOCAL_MACHINE/ ... CurrentControlSet / Power / PowerSettings / ...

Something like that

Then look for core parking key and change it's Attributes key from 1 to 0 and the core parking setting is unlocked in Power Manager...

Then change the setting from there do disable core parking...

No need for utility and it is easy to revert back. Just restore default settings and change key back to 1 if you don't like it. You can also force the cores to stay parked forever this way.

Force core parking to stay off, and you still have the HT benefit.

HT OFF < DEFAULT SETTINGS < CORE PARKING DISABLED

This is performance order. note that CORE PARKING DISABLED will only prevent stuttering and maybe provides no increase in performance. But you will definately see a benefit in the power saving POWER PLAN...

Why test it in power save mode ? It is proof that first the HT logical cores are enabled before the frequency is upped.

I have been using this method since first Core i series came out. Disabling hyperthreading is just bogus.

moab600 · 05-02-2012, 09:28 | posts: 3,271 | Location: Germany

It eliminated weird stuttering and stuff like that, also i noticed winrar score increase by almost 200% after disabling core parking, just saying

pimp_gimp · 05-02-2012, 23:34 | posts: 5,777 | Location: Tacoma, Washington

Garikfiox, the utility that ---TK--- linked works wonders, much easier than searching the registry for the entries. Also, as others have pointed out this only helps when you have HT enabled (on CPUs that support it), or many cores.

dsbig · 05-22-2012, 15:21 | posts: 1,695 | Location: in a house

I just wanted to make an update on this thread, some of u already know this.

if your use this with the amd hotfix and scheduler for parking it will let windows use the HT for task even though it is intel..

I noticed with just the registry setting it doesnt effect the HT cores much but after I installed those two patches, task manager showed usage when doing regular things.

http://support.microsoft.com/kb/2646060

http://support.microsoft.com/kb/2645594

---TK--- · 05-22-2012, 22:09 | posts: 14,730 | Location: New Jersey, USA

my update to this thread is that this junk causes random freezes on my pc. luckily the utility made it very easy to revert back. other notes not a damn difference for me either way performance wise.

BrightCandle · 05-22-2012, 23:11 | posts: 88 | Location: UK

I used this months ago to fix stuttering issues with Arma 2. It seems a lot of the power saving features of modern components are causing a lot of performance problems, whether it be core parking or frequency reduction on the CPU and GPU they all seem to cause little jumps and bumps in the Windows GUI and games.