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Windows 7: Boot Advanced Option (Maximum Memory)

16 Nov 2009   #11

Windows 7 Ultimate 64
Don't listen to the lies, Setting more Processors WORKS

OK, here we go...

Earlier this year, I built a gaming rig.

The specs are as follows (for you nerds like me):

Gigabyte X58-UD5 motherboard
I7 920 Intel CPU O.C.'d to 4.2Ghz (200mhz x 20 w/ Turbo enabled for 21x)
6 Gigs of G.Skill PC10666 ram at timing for 2x800Mhz = 1600Mhz
BFG GTX 295 O.C.'d to 684/1246/1476
W.D. Black Edition 1 TB H.D. (7200rpm SATA)
Creative Fatal1ty X-Fi sound card
Corsair TX650H P.S.
Cooler Master V8 CPU w/ 120mm fan
HannsG 28" 1080p HDMI @ 1900x1200

and I am running Windows 7 Ultimate 64 for the operating system.

NOW... here's the issue...

On most of my games, I thought I was running good, even great.

I was wrong!

As high as my benchmarks were, there was something distinctly wrong with
my system. And it wasn't just in games. Occasionally the system would hang
while using the DVD burner and trying to surf the net, or browsing, and when
trying to render video, blue screens of death with hardware dumps would
occur quite frequently.

The problem is, as frequent as it's been, it's also been repeatable and isolated
to specific applications. And because I was able to repeat these things again
and again and again, I was then able to figure out several other things about
the Windows operating system and the flaws of it.

The possible solution and fix!!!

Somewhere, somehow, I came across someone's post on a forum describing
similar problems to what I was having. I should tell you that when I am surfing
the net and trying to find answers to problems, my mind goes into another place,
I can't explain it, and my reading ability goes into savant mode... seriously. I've
had people at home and work look over my shoulder and watch me going through
webpages, running down the screen at full scroll and stopping and picking out the
exact thing I need to read... this time was no different!

The person went on to explain that if you bring up Msconfig in your start/run line
and click on the second tab "Boot". This works for Vista and Windows 7.

Click on the "Advanced Options" button and a new screen appears.

Where it reads "Number of processors" check that box and pick the number of
processors you have to match your CPU. A duo/dual core has 2, a quad core has
4... Apply and Reboot!

The proof is in the testing!!!

After doing this, you will notice a number of things.

The first, your system will boot quicker.

The second, true monitoring and usage of ALL 4 (or 2) processors on your CPU!

The third (and most important for gamers) HIGHER BENCHMARKS, LOWER TEMPS

I wouldn't believe it if I was reading this post and hadn't done it myself however, I DID
DO IT AND IT WORKS! I found the solution!

BUT...there is a catch!

And this is where I need someone to help me because I have found the other part of the
problem and why everyone is missing the key issue here, including Microsoft and just
about everyone else in the world.

When enabling the 4 processors this way, you CANNOT enter into the S3 sleep state and
resume normally. That is, the video will not resume and upon powering down with the 5
second power reset method (where it powers down the entire computer and is the same
as a full reboot) what THEN happens is the computer DOES power down and cycle a boot
HOWEVER, it then proceeds to RESUME windows thereby producing some quasi-windows-
boot-up and it then requires an ADDITIONAL full reboot to make the system right again.

Seriously, this is the only way I can explain this, I don't have any other, more proper,
words to explain it, but this is what I am experiencing. So to this, I want to explain what
I THINK is happening here.

Because you are trying to put the CPU and memory and everything into a sleep state
(I like to do this and reboot once every week or two as it resumes windows in less than
3 seconds), what happens when you boot on 4 processors is that you are ONLY putting
the FIRST core to sleep state. The other 3 are running and therefore NOT syncing back
with the first CPU core.

THE INVERSE is... whereas Windows Vista/7 is SUPPOSE to access these cores ON ITS
OWN and use them properly and as software written for the use of these cores call for
it, it would be the OTHER 3 cores which are in a low power state (like sleep) and get
called on as needed. So...

Normal default boot up (1st CPU core used / others in waiting)


Boot up 2/4 processors (2/4 CPU cores used) but sleep causes (1st CPU wake/others don't).

I am going to send this out to Microsoft and the Motherboard manufacturers and of course,
all of the major forums where the gamers and techs hang out.

I know it might sound crazy to some, but a few years back, I solved the problem with card
readers ON EVERY laptop that used the Texas Instrument chipset for SD/MMC cards built
into most HP/Compaq and various other laptops. Guess what the problem/issue was???

A power/sleep state that was affecting the card reader and again, I figured out the problem
by reading multiple forums which described similar problems on entirely different issues. On
this one, I was able to alter the registry myself and when I posted my results, I got calls from
all over the world and tons of emails thanking me for a problem which existed for 3 YEARS
and which HP/Texas Instrument and others couldn't seem to fix?!

Feels good being that I'm not even a programmer!!!

Final Summary...

Enable 2 or 4 cores on boot up on your system and thank me later! You can shutdown as you
normally would, just can't go to standby/sleep BUT you will reboot in 20-30 seconds and your
performance gain will be tremendous!!!


My System SpecsSystem Spec
16 Nov 2009   #12

Windows 10 Pro (x64)

@OahnMacleod, are you saying your computer is so broken that it cannot see for itself that you have a quad core processor? (Core i7 is in fact 8 due to Hyperthreading) The advance boot options are for testing purposes by disabling processors or memory. Changing these values with not in anyway increase your performance because the computer is well aware of what the capabilities of your hardware already is.

But you are welcomed to provide proof to the increase of performance.

Also it is probably safe to assume you disabled Hyperthreading when switched to 4 processors.
My System SpecsSystem Spec
09 Dec 2009   #13

Windows 7 Home Premium 64-bit

This tweak worked on Windows Vista, but has no effect on Windows 7. If you want to improve your boot times, you can try disabling start-up programs and services(only disable services in services.msc). You can also try checking "No GUI Boot" and reducing timeout from 30 seconds to 3 seconds in MSCONFIG.

I also hear that removing fonts improves boot times, but feel free to correct me if I'm wrong.

Here's the Boot Advanced Options tweak for Vista: Boot Advanced Options - Number of Processors - Vista Forums[11]=Performance%20Maintenance
My System SpecsSystem Spec

31 Jan 2011   #14

windows 7

do you guys know a command line or vbscript for this?
My System SpecsSystem Spec
01 Feb 2011   #15

Windows 10 Pro (x64)

Quote   Quote: Originally Posted by drzpapi1985 View Post
do you guys know a command line or vbscript for this?
It is called leave it alone. Seriously. This tweak has always been a myth from the day it was introduced. These settings DO NOTHING! Other then disable portions of the hardware for testing and debugging for software/hardware developers.
My System SpecsSystem Spec
07 Jul 2011   #16

Windows 7 Ultimate 64 Bit

Sorry to post on such an old topic but I just saw another forum (I forgot where) telling my to max the memory, and cores used as well as setting it to no GPU boot and setting options to permanent, and now when I try to start my PC I get a blue screen and i've tried windows repair, Help Please!!!


Never, I mean NEVER, make the mistake I did. Messing with these settings does nothing but f*** up your computer. It was a pain in the butt but after many hours of fiddling I fixed it. DON'T TAKE THE RISK, LEAVE THE SETTINGS.
My System SpecsSystem Spec
23 Aug 2011   #17

Windows 7

I know the post is old now, but I do actually have a need to be able to do this via the command line.

If anyone knows, it would be greatly appreciated. Just now we keep having to adjust this via the GUI but we're trying to make our deployment fully automated, and need this value to be set for our custom hardware
My System SpecsSystem Spec
23 Aug 2011   #18

Windows 10 Pro (x64)

Quote   Quote: Originally Posted by Smithy566 View Post
I know the post is old now, but I do actually have a need to be able to do this via the command line.

If anyone knows, it would be greatly appreciated. Just now we keep having to adjust this via the GUI but we're trying to make our deployment fully automated, and need this value to be set for our custom hardware
My System SpecsSystem Spec
24 Aug 2011   #19

Windows 10 Pro x64

Unless you've replaced the HAL or are doing (very bad) things with custom drivers, you shouldn't need to modify this. However, if you need to modify the amount of memory available to Windows, or the number of CPUs, bcdedit is how you'd do it. I would suppose you have very, very, VERY specific reasons for doing this? I'm curious as to what they'd be, as odd things are always curious to me.
My System SpecsSystem Spec
20 Oct 2011   #20

Windows Ultimate x64

what logicearth been telling you guys is actually true, this tweak does nothing whatsoever Tested it grabbed a stopwatch to see the boot time it doesnt change. Even setting timeout to 3 and NoGui does absolutely nothing so this rather shows that this tweak is a myth
My System SpecsSystem Spec

 Boot Advanced Option (Maximum Memory)

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