How to optimize its processor: change and enable L2 and L3 of its CPU caches

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13 thoughts on “How to optimize its processor: change and enable L2 and L3 of its CPU caches”

Lj 25 February 2017 at 3 h 57 min

Hello

Could you please explain I am confused … you wrote to edit decimal but in other source I see an advice to edit to hexa http://bestcomputerscienceonline.blogspot.co.uk/2012/01/increase-l2-cache.html … and other said to modify Binary Data… I do know about this nothing :( maybe you could explain where is the mistake or all sources are right…

Who is right? :)

Pandoon Post author 25 February 2017 at 18 h 55 min

Hi,

We are right both, decimal or hexa will do the same thing, it is only a conversion between deci or hexa.

So you can choose hexa or deci, it is the same, there is only the data to insert that is different, but at the finish, it is the same.

i love you 1 March 2017 at 3 h 23 min

hello beautiful cat
my cpu is pentium G3250 so after do this i really think my pc is got faster around 40%

Lj 2 March 2017 at 22 h 47 min

Not for all PC it will increase speed and not for all games it will be an advantages but in my opinion the best way to set up it then leave to decide for Windows.

Lj 2 March 2017 at 22 h 58 min

Thank you very much for reply. Can I ask you the last question?
I made a topic with these steps how to set up L2 and L3 for my friends and one of them said that 0 is auto and do not change this coz Windows wrote…

Do not change the SecondLevelDataCache entry
Some third-party sources have erroneously reported that modifying the SecondLevelDataCache registry entry in HKEY_LOCAL_MACHINE\System\CurrentControlSet \Control\Session Manager\Memory Management can enhance system performance. The second level (L2) cache is recognized by the operating system and is fully utilized regardless of the setting of this parameter.
https://technet.microsoft.com/en-us/library/cc938581.aspx

I found myself that the message was wrote by Windows in 2008 at least and these years Windows put L2 by default 256 kb if on 0 like Auto. How it works now? Do I need to set up it manually or I have to trust Windows auto settings ? I think yes I should to set up it manually coz I think Windows has default settings for size of L2 like 256 kb… my friend says do not change it coz it OS auto setting and its working fine without changing

Do you know what is the best way? Thanks

Pandoon Post author 3 March 2017 at 17 h 41 min

Hi,

For me, it is the best to change: i and many users saw a best in the OS… But not everybody.
If it is auto-setting, it can put wrong settings. Why ask Windows to do auto-setting (so work much to detect the value) if you know the real value? Windows is an OS to be compatible with hundred differents environnement, so it is normal that Windows ask users do not change value, if you change the processors, you need to not forget this parameter….

I understand your friend, and i also see this article in the past before writing this post, and i was in trouble, but after change the value, i definitely accept to change the value.

Lj 3 March 2017 at 19 h 12 min

Thank you very much :)

zithro 31 May 2017 at 4 h 09 min

This setting has no effect on modern CPUs !
http://www.msfn.org/board/topic/25766-registry-myths-2-setting-the-l2-cache-size/
TL/DR: if you dont have a Pentium 1 with more than 64Mo of RAM, dont touch it !

Lj 2 September 2017 at 20 h 29 min

this article http://www.msfn.org/board/topic/25766-registry-myths-2-setting-the-l2-cache-size/ from 2011

Dr. Pancakes 28 April 2019 at 21 h 37 min

Hi so i followed the instructions to change the L2 cache, and now i get much worse fps in games, it didnt give me a boost, it did the opposite. I used to get 200+ fps in CS:GO and now i get around 140.
My Specs:
Windows 10 64 bit
i5 7400
GTX 1060
16gb ram dual channel (2×8)
windows installed on SSD