Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.




192 posts

Master Geek


Topic # 86623 10-Jul-2011 15:45
Send private message

Hey all,

Several weeks ago I built a new system with an i5 2500K CPU and Ive noticed that it often runs at around 3600MHz when doing things such as playing games etc. The strange thing is that I havn't changed anything in the BIOS except XMP and I havnt knowingly overclocked the CPU.

I had XMP enabled in the BIOS under the memory settings for a while as my RAM was running under its specified 1600MHz speed but decided to re-disable it as I didnt know enough about what it did (I was recommended by someone else to enable it) Any ideas on whats going on here?

Also when should I be beginning to get worried about temps? Im currently usng the stock cooler and Ive seen the CPU get as hot as 70'C during games, is this ok?

https://skydrive.live.com/?cid=2bcb1d04ea4650c3&sc=photos#cid=2BCB1D04EA4650C3&id=2BCB1D04EA4650C3%21159&sc=photos

Create new topic
4356 posts

Uber Geek
+1 received by user: 813

Trusted
Lifetime subscriber

  Reply # 491679 10-Jul-2011 16:11
Send private message

RealityClash: Hey all,

Several weeks ago I built a new system with an i5 2500K CPU and Ive noticed that it often runs at around 3600MHz when doing things such as playing games etc. The strange thing is that I havn't changed anything in the BIOS except XMP and I havnt knowingly overclocked the CPU.

I had XMP enabled in the BIOS under the memory settings for a while as my RAM was running under its specified 1600MHz speed but decided to re-disable it as I didnt know enough about what it did (I was recommended by someone else to enable it) Any ideas on whats going on here?

Also when should I be beginning to get worried about temps? Im currently usng the stock cooler and Ive seen the CPU get as hot as 70'C during games, is this ok?

https://skydrive.live.com/?cid=2bcb1d04ea4650c3&sc=photos#cid=2BCB1D04EA4650C3&id=2BCB1D04EA4650C3%21159&sc=photos


70 is 'okay' but not ideal. i highly recommend megahalem





423 posts

Ultimate Geek
+1 received by user: 8


  Reply # 491685 10-Jul-2011 16:18
Send private message

3600MHz is normal, it's part of what intel calls 'Turbo Core'.

Basically, the 2500K normally runs at 3.3GHz. When all 4 cores are under load, it increase by 100MHz. When 3 are under load, it increases by 200MHz. For 2 it increases by 300MHz and for 1 by 400MHz.

So basically what's happening is that your workload is heavily stressing 2 cores, while 2 are sitting idle (or at least your CPU thinks so). In response it shuts down two cores and increases the frequency of the other two by 300MHz.

This is default behaviour. if you were to overclock then the frequencies would increase further.

 
 
 
 


2390 posts

Uber Geek
+1 received by user: 107


  Reply # 491718 10-Jul-2011 18:17
Send private message

^ What michaelt said.

I OC my 2500K to (1/2/3/4) 4.2/4.2/4.1/4.0ghz and I hit ~70C while playing BF2:BC2 and a few other games that use more than 1-2 cores.

I have a low profile COoler Master Vertex Pro on mine, though.



192 posts

Master Geek


  Reply # 492122 11-Jul-2011 16:43
Send private message

Oh that makes sense, I thought that Turbo Boost was for only when one core was being used. I'll probably look at getting an aftermarket cooler in the next month or so as I'd like to be able to OC the little beast.

Any more recommendations for a mid range air or cheap water cooling solution? (Would I really notice that much of a difference between air and water cooling?)

8020 posts

Uber Geek
+1 received by user: 386

Trusted
Subscriber

  Reply # 492270 12-Jul-2011 03:08
Send private message

Decent after market cooling doesn't come that cheap these days ~$100-200.

Corsair do a nice close loop water system
http://www.computerlounge.co.nz/components/componentview.asp?partid=14846

The Prolimatech would be my pick for air cooler
http://www.computerlounge.co.nz/components/componentview.asp?partid=9795

There are some interesting looking coolers in the $60-80 range but I'd be suspicious about whether they perform much better than the stock cooler, hit some reviews I guess.



192 posts

Master Geek


  Reply # 493469 14-Jul-2011 18:26
Send private message

Looks like I'm going to have to have a decent look at one of these Megahalems then, thanks for the help guys :)



192 posts

Master Geek


  Reply # 493473 14-Jul-2011 18:32
Send private message

Just had a look at the comparison graph on CL's Megahalems' page and I'm guessing that green bars are stock coolers, meaning that in general a cooler like this would only decrease temps by around 3'C.

Is this correct as I can't really seem to justify spending $110 for such a minimal decrease in temps?  

8020 posts

Uber Geek
+1 received by user: 386

Trusted
Subscriber

  Reply # 493570 15-Jul-2011 02:03
Send private message

The graph is Megahalem vs ThemeralAlright True which was the best air cooler for quite awhile. Stock is no way near either.

If you want a cheaper cooler Cooler Master 212 is apparently great bang for buck but hard to get in NZ I think.



192 posts

Master Geek


  Reply # 493905 16-Jul-2011 00:15
Send private message

Ah thanks for clearing that up, looks like ill be going with Megahalem then. Do you know of any graphs comparing the Megahalem with the stock cooler?

Create new topic



Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

New Zealand hits peak broadband data
Posted 18-Jan-2018 12:21


Amazon Echo devices coming to New Zealand early February 2018
Posted 18-Jan-2018 10:53


$3.74 million for new electric vehicles in New Zealand
Posted 17-Jan-2018 11:27


Nova 2i: Value, not excitement from Huawei
Posted 17-Jan-2018 09:02


Less news in Facebook News Feed revamp
Posted 15-Jan-2018 13:15


Australian Government contract awarded to Datacom Connect
Posted 11-Jan-2018 08:37


Why New Zealand needs a chief technology officer
Posted 6-Jan-2018 13:59


Amazon release Silk Browser and Firefox for Fire TV
Posted 21-Dec-2017 13:42


New Chief Technology Officer role created
Posted 19-Dec-2017 22:18


All I want for Christmas is a new EV
Posted 19-Dec-2017 19:54


How clever is this: AI will create 2.3 million jobs by 2020
Posted 19-Dec-2017 19:52


NOW to deploy SD-WAN to regional councils
Posted 19-Dec-2017 19:46


Mobile market competition issues ComCom should watch
Posted 18-Dec-2017 10:52


New Zealand government to create digital advisory group
Posted 16-Dec-2017 08:47


Australia datum changes means whole country moving 1.8 metres north-east
Posted 16-Dec-2017 08:39



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.