Just to let you know

[Daniel Yates]

Hi all

Bought my fave hardware magazine the other day and discovered something
which I thought others might want to know about ( just in case ).

A lot of people these days are running processors with a fast L2 cache,
normally 512kb - Northwood or Bartons for example. Did you kow that if you
are running XP you will only be using 256Kb of this at the most as XP is
only configured to utilise that amount. If you are running a 512Kb L2 Cache
or higher you need to register it manually.

You can do this by going to
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SessionManager\MemoryMan
agement and find the DWORD entry : SecondLevelDataCache. When entering
values here, be sure to use the correct numeric system. 256Kb should be
entered as 100 in hexadecimal, 512Kb is 200 and 1024Kb is 400

Hope this is of use to some of you guys and gals

Peace

Daniel

 

[@drian]

Interesting! Here is a web page on that setting:

http://theeldergeek.com/level_2_cache_settings.htm

@drian.

 

[Timothy Daniels]

"Daniel Yates" shared:

Bought my fave hardware magazine the other day
and discovered something which I thought others
might want to know about ( just in case ).

What's the magazine that carries this interesting
stuff?


*TimDaniels*

 

[SteveH]

Hi all

Bought my fave hardware magazine the other day and discovered something
which I thought others might want to know about ( just in case ).

A lot of people these days are running processors with a fast L2 cache,
normally 512kb - Northwood or Bartons for example. Did you kow that if you
are running XP you will only be using 256Kb of this at the most as XP is
only configured to utilise that amount. If you are running a 512Kb L2 Cache
or higher you need to register it manually.

You can do this by going to
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SessionManager\MemoryMan
agement and find the DWORD entry : SecondLevelDataCache. When entering
values here, be sure to use the correct numeric system. 256Kb should be
entered as 100 in hexadecimal, 512Kb is 200 and 1024Kb is 400

Hope this is of use to some of you guys and gals

Peace

Daniel

Thanks for that

SteveH

 

[Daniel Yates]

It;s in the Uk and called PCGaming Hardware World. It is a relativly new mag
( only 5 issues out so far ) but this is the best hardware mag I have ever
seen. basically it may as well be called homebuilders and overclockers
monthly 'cause that is what it is

To quote it's front cover " Extreme Hardware! : The only mag dedicated to
games hardware and extreme CPU, 3DCard & motherboard tuning!"

.. very good mag, worth getting.

Daniel

 

[Olav]

It;s in the Uk and called PCGaming Hardware World. It is a relativly new mag
( only 5 issues out so far ) but this is the best hardware mag I have ever
seen. basically it may as well be called homebuilders and overclockers
monthly 'cause that is what it is

To quote it's front cover " Extreme Hardware! : The only mag dedicated to
games hardware and extreme CPU, 3DCard & motherboard tuning!"

. very good mag, worth getting.

Daniel

Do you have an url for them?

 

[RamFan]

Excellent tip. If I read the article correctly, this is probably set
incorrectly in every machine where the CPU was upgraded after XP was
installed (such as mine).

 

[AJ]

Great find! Thanks for the heads up. All my Barton boxes are running
Win98SE but I'm glad to know about that anyway.

 

[Conor]

Thanks for that

SteveH

Same here.
--
________________________
Conor Turton
(e-mail address removed)
ICQ:31909763
________________________

 

[Daniel Yates]

They havent got a website yet. Not sure if they have one in the pipeline or
not. I know they are a sub mag of PC Gaming World who i know have a web
site but not sure of the URL - a google search should pop something up.

Daniel

Do you have an url for them?



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[AJ]

Excellent tip. If I read the article correctly, this is probably set
incorrectly in every machine where the CPU was upgraded after XP was
installed (such as mine).

Yeah, reports are rolling in of pee4's needing the same fix.

 

[Richard Dower]

Hi all

Bought my fave hardware magazine the other day and discovered something
which I thought others might want to know about ( just in case ).

A lot of people these days are running processors with a fast L2 cache,
normally 512kb - Northwood or Bartons for example. Did you kow that if you
are running XP you will only be using 256Kb of this at the most as XP is
only configured to utilise that amount. If you are running a 512Kb L2 Cache
or higher you need to register it manually.

You can do this by going to
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SessionManager\MemoryMan
agement and find the DWORD entry : SecondLevelDataCache. When entering
values here, be sure to use the correct numeric system. 256Kb should be
entered as 100 in hexadecimal, 512Kb is 200 and 1024Kb is 400

Hope this is of use to some of you guys and gals

I did this, and altered the reg entry, but when i run the L2 verify script
it still shows the L2 cache as 0?

But when i look in the registry it is set to 200 and does say "512"??

 

[Richard Dower]

Hi all

Bought my fave hardware magazine the other day and discovered something
which I thought others might want to know about ( just in case ).

A lot of people these days are running processors with a fast L2 cache,
normally 512kb - Northwood or Bartons for example. Did you kow that if you
are running XP you will only be using 256Kb of this at the most as XP is
only configured to utilise that amount. If you are running a 512Kb L2 Cache
or higher you need to register it manually.

You can do this by going to
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SessionManager\MemoryMan
agement and find the DWORD entry : SecondLevelDataCache. When entering
values here, be sure to use the correct numeric system. 256Kb should be
entered as 100 in hexadecimal, 512Kb is 200 and 1024Kb is 400

Hope this is of use to some of you guys and gals

I'm running a Pentium 4 @ 2.53GHz with a default FSB of 533, thus i assume
this is a L2 cache of 512?

Yeah...google or Intel...just checking.

 

[Richard Dower]

Excellent tip. If I read the article correctly, this is probably set
incorrectly in every machine where the CPU was upgraded after XP was
installed (such as mine).

Mine was a fresh install of Windows XP Professional, it was also set to
"0"...which is 256K L2, so i have followed the instructions.
Any more tips like this to tweak performance?

And how in the hell do you keep your view settings to stick???...every time
i go into My Documents my view settings change.

 

[Richard Dower]

Yeah, reports are rolling in of pee4's needing the same fix.

Someone email Microsoft and get them to put up a hotfix!

 

[spodosaurus]

I did this, and altered the reg entry, but when i run the L2 verify script
it still shows the L2 cache as 0?

But when i look in the registry it is set to 200 and does say "512"??

Which chip?

--

Are you registered as a bone marrow donor? You regenerate what you
donate. You are offered the chance to donate only if you match a person
on the recipient list. Visit www.marrow.org or call your local Red Cross
and ask about registering to be a bone marrow donor.

spam trap: replace shyah_right! with hotmail when replying

 

[Richard Dower]

Which chip?

Pentium 4 @ 2.53GHz with a FSB of 533MHz.

 

[Dave Hull]

I did this, and altered the reg entry, but when i run the L2 verify script
it still shows the L2 cache as 0?

But when i look in the registry it is set to 200 and does say "512"??

I have the same problem, though I wonder if the L2 verifier isn't working
properly.
I am running a P4 2.4C.

Dave

 

[Dave Hull]

I did this, and altered the reg entry, but when i run the L2 verify script

it still shows the L2 cache as 0?

But when i look in the registry it is set to 200 and does say "512"??

Just an update, I am experiencing the same thing as you, but I checked my L2
cache using the DMI explorer in my Asus Probe utility and it says that I
have 512 installed. I tend to believe it too.

Dave

 

[AJ]

Just an update, I am experiencing the same thing as you, but I checked my L2
cache using the DMI explorer in my Asus Probe utility and it says that I
have 512 installed. I tend to believe it too.

Dave

Just one question. Probe reads that you have a CPU with 512Mb. Does
that mean XP knows it?