SixtyFour
SixtyFour 1.1.0
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(6) 4.75

Reduce memory overhead by opening apps in 32-bit mode.   Demo ($2.99)
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SixtyFour is a memory optimizer and system utility for 64-bit-capable hardware running Mac OS X 10.5 or higher.

SixtyFour presents a list of 64-bit apps that can open in 32-bit mode and facilitates the setting of a preference to force a listed app to open in 32-bit mode.

An app opened in 32-bit mode uses significantly less memory than when opened in 64-bit mode.

Running most if not all apps in 32-bit mode on systems that have little memory available could potentially lead to an increase in overall system performance.
What's New
Version 1.1.0:
  • Improved performance under Mac OS X 10.7 Lion or higher
Requirements
  • Intel/PPC, 64-bit processor
  • OS X 10.5 or later





MacUpdate - SixtyFour



SixtyFour User Discussion (Write a Review)
ver. 1.x:
(6)
Your rating: Now say why...
Overall:
(6)

sort: smiles | time
burypromote

+2

Weasel reviewed on 27 Jan 2014
I recently had trouble with v 1.1.0 on my G5. It bounced in the dock & crashed. The developer found the problem & advised me on what to do. Problem gone!!!
[Version 1.1.0]


burypromote
+1

+77
Mikael B commented on 01 Mar 2013
If you need 32-bit kernel mode because of lack of driver support, as I did, then the sixtyfourswitcher preference panel is very simple to handle this and lock the Mac to 32bit:
http://www.macupdate.com/app/mac/32299/sixtyfourswitcher

Of course you can also just hold down "2" and "3" when booting too.

Otherwise SixtyFour may have its uses too. For some Macs it's simply not cost effective to upgrade RAM. I maxed out to 6gb on my old Macbook Pro and recently downgraded to SL because of stability issues. My machine does support ML so that is on the horizon when I have updated the well sounding hardware that needs 32bit kernel mode. :-)
[Version 1.0.8]

4 Replies

burypromote

+77
Mikael B replied on 02 Mar 2013
Yes, that makes sense. SL is always booted in 32bit kernel mode, except AFAIK for in a few Xserves. That does of course not mean 64 bit apps must run in 32 bit even though the kernel is.

However, when running SixtyFour, I see only 250 of 519 apps listed and among those not listed are 64bit apps — and listed as such in System Info — that I'd like to try in 32bit to see if they can work. I have very few 64-bit apps that actually need much memory and that I keep open. Most listed are not in /Applications where I have only 140 applications installed currently. Why doesn't SixtyFour focus on the apps in there?
burypromote

+77
Mikael B replied on 03 Mar 2013
OK, that makes some sense. Except that there's no reason what so ever to make changes to an app that isn't installed in Applications. Unnecessary work.

Consider that a request for SixtyFour to only list apps in /Applications.
burypromote

+77
Mikael B replied on 04 Mar 2013
:-)

Another suggestion is to have clear instructions on how to evaluate the memory saved. At the moment I'm not sure what effect if any, SixtyFour have had on that.

A built-in full on memory analysis is perhaps a bit over the top, but I assume there are other apps that can do this job. I'm starting to look around.....
burypromote

+77
Mikael B replied on 05 Mar 2013
I wasn't aware of Processtimer. Do you recommend to compare most favorably with application just opened or just some standard document loaded as well?

Thanks!
burypromote

Imac4ever56 reviewed on 04 Nov 2012
works great for me.
[Version 1.0.8]


burypromote
-11

+14
Tom E. Gun commented on 13 Feb 2012
If you're such a smart developer, can you explain why do you compile your own app also as a ppc64 executable?
There is/was no PowerPC 64-bit capable mac ever!
[Version 1.0.5]

1 Reply

burypromote
+12
1951fdg (developer) replied on 13 Feb 2012
Power Mac G5.
http://www.apple.com/pr/library/2003/11/18Apple-Introduces-New-Dual-Processor-1-8-GHz-Power-Mac-G5.html
burypromote
+2

+837
Espiridion commented on 14 Jan 2012
Although focused on working with audio, some people may find this interesting as it addressees many of the questions that have been posted regarding speed, memory usage, and performance.
http://www.meldaproduction.com/audiotutorials/32vs64.php
[Version 1.0.4]

1 Reply

burypromote
1951fdg (developer) replied on 14 Jan 2012
Thanks for the link!
burypromote

+557
Penguirl commented on 14 Dec 2011
I guess there's nothing wrong with running 64 bit apps in 32 bit mode but if they don't have enough RAM that just means more pageins & pageouts which adds additional wear to your HDD or SSD. Better really to have enough RAM to meet your needs.
[Version 1.0.4]

6 Replies

burypromote
-1

+37
Edgarcabrera replied on 14 Jan 2012
Under Lion, Spotlight must be active in order to have App Store working fine and generally for the OS X, thus adding more pageins & pageouts... I would add a better memory managing under Lion as well, so the enough RAM will be really optimised... I was able to have around 60% of free RAM in 32 bits with 2Gb under normal conditions, now with Lion and 4Gb, I manage 38% of free RAM in 64 bit... therefore the memory managing in Lion is utterly horrible and more RAM will never be enough :(
burypromote
+3

+108
Nick Collingridge replied on 14 Jan 2012
@Edgarcabrera: Don't say that Lion is horrible at memory management unless you TRULY understand the deep-down details of what and how it is performing this function.

The amount of "Free" RAM is not necessarily that significant - much of the RAM marked as "Inactive" is not free simply because the system has not needed it. It is better to keep inactive program code and data in RAM than flush it to disk because it may be needed again (because of a context switch for example) before a program needs totally new RAM, and that way you avoid the delay involved in getting the code/data back into RAM from the hard disk as you would get if the OS maximally flushed stuff to disk in order to maximise the amount of "Free" RAM.
burypromote
-1

+37
Edgarcabrera replied on 14 Jan 2012
@Nick
After your explanation, the problem is that such caching should be always for the system itself, not for any non-system application... when you've got 4 applications cached, such cache or "inactive" memory is wasted, because in order to open another memory demanding application, such "inactive" memory must be freed, and a worst delay... and it is always better to have unoccupied memory. The memory management is horrible because it didn't happen in Tiger, in fact it should be as in the early days, load application to RAM, finish to use it and unload from RAM or if you've got to do caching, then do profiling on the applications... and by the way, the RAM initially was created to support the registers and to randomly put load and unload code...
burypromote
+1

+108
Nick Collingridge replied on 15 Jan 2012
In what way is it better to have that RAM empty or "Free" than to have it occupied by program code or data that might or probably will be re-used? Do you REALLY believe that it would be better for all of that stuff to be paged out than leaving it in RAM?
burypromote
-1

+37
Edgarcabrera replied on 15 Jan 2012
well, since what really happens is that the RAM is occupied by other applications and not liberated as intended for other applications, memory management is horrible... and there are long discussions in various forums in that respect, such an issue is becoming mythical... and do you REALLY want to have got such an issue?
burypromote
+1

+108
Nick Collingridge replied on 15 Jan 2012
OK, one simple question - what is the performance difference in an application getting RAM from "Free" memory rather than getting it from "Inactive" memory?
burypromote
+1
PorkPieHat commented on 02 Nov 2011
Is it really pay-what-you-want-ware if you're broke and therefore want to pay $0.00 for it, but you must pay at least $0.01 and use a credit card or PayPal (which is also by credit card)?
[Version 1.0.3]

3 Replies

burypromote

+1
tmtsui replied on 02 Nov 2011
If you are really broke, don't buy anything. Sell your computer, too.
burypromote
+2

+197
GeoProf replied on 10 Dec 2011
Actually, this developer's definition of pay-what-you-want-ware is anything OVER $1 USD - he won't accept 99 cents or less using either PayPal or a credit card. Isn't it amazing how easily we'll allow our language to be perverted in the name of capitalism?
burypromote
+2
1951fdg (developer) replied on 11 Dec 2011
PayPal charges a fee on the amount donated. Fees vary by country, please insure we receive at least $0,01 USD. If a payment is made from a US PayPal account, the PayPal fees are 3,9% + $0,30 USD. For example, for a donation of $1,00 USD, we receive $0,648 USD from PayPal.
burypromote

+1

tmtsui reviewed on 31 Oct 2011
Memory is king. By forcing some apps into 32-bit mode does save me more RAM for running memory-hungry applications.

It's true that one can do the same by opening the info box of any app to find out whether it can be run in 32-bit mode. And then select the box to force the app to run in 32-bit. That's no doubt about it.

But this little app collects all the information and gives you a nice and user-friendly interface.

The new version even remembers which apps have been selected to run in 32-bit mode.

Just for that reason, I am willing to pay for it.

Moreover, I am impressed by the quick response from the developer regarding suggestions and questions.

Edgarcabrera. I did my payment via Paypal. I didn't find any problem with it.
[Version 1.0.3]

1 Reply

burypromote

-7
Bunky replied on 11 Jun 2012
I will make a payment to register this handy little app..
Just recently ran into a situation using Graphic Converter. Was trying to open MrSid graphic files to convert parts of them to tiffs.
The LizardTech plug-in reported - unidentified files.. I emailed the developer (Lemke) and he replied - open GC in 32 bit mode and see what happens.. I suspect that there are numerous situations where this may be the case..???
burypromote
+2

+37

Edgarcabrera reviewed on 31 Oct 2011
It's a very good little application, quite helpful to run those applications everyday use in 32bits mode in Lion, i.e. Safari, Mail, Webprocess, etc. to reduce memory usage. For more demanding applications, 64 bits is good.

But I'd like to recommend to the developer to have another payment gateway apart from Paypal, I've tried to pay for this but I can't via Paypal, perhaps google checkout?...
[Version 1.0.3]

6 Replies

burypromote
-1

+1
tmtsui replied on 31 Oct 2011
Hi Edgarcabrera, I overlooked at your comment regarding Paypal. Sorry about that.
burypromote

+37
Edgarcabrera replied on 31 Oct 2011
it's alright, no worries
burypromote
-2
1951fdg (developer) replied on 01 Nov 2011
Why can't you pay via PayPal?
burypromote
+2

+37
Edgarcabrera replied on 01 Nov 2011
I'm using debit card, but it cannot be used it if issued from Mex, only CC but I don't have CC... I've got no issues with google checkout and App Store, but Paypal seems more restrictive...
burypromote
1951fdg (developer) replied on 01 Nov 2011
I will sign up for Google Checkout. In the meantime, send an email to the email address displayed on the PayPal page.
burypromote

+37
Edgarcabrera replied on 01 Nov 2011
Thank you, I appreciated it... I hope to have more payment options shall help you to get more customers, specially those who cannot pay via Paypal :)
burypromote
+5

+132
Stickman67 commented on 26 Oct 2011
I read through much of the feedback on this app with interest, and then did a bit of research. That tended to back up the developer's suggestions that running apps in 64-bit mode did use extra memory.

I then went and changed those of my most frequently used apps to 32-bit mode, just to see what happened.

Memory usage has been lowered significantly. Other than that, not much to report about performance, one way or the other, except …

Photoshop CS5 is much snappier on the startup in 32-bit mode. Why? Who knows? Who cares? It now uses less memory and starts faster.

Downside for this developer is that I did this using Get Info and clicking "Run in 32-bit mode" for those apps that offered the option – took me all of a few minutes – so I'm not going to part with my cash.

That's not to say, however, that others might well find this app beneficial, in terms of time savings, or just because they're not 100% sure of what they're doing otherwise. I'm not saying to buy it or not. What I am saying is that the process it is designed to carry out has been of benefit to me, even if I didn't use this app to carry out that process.

[MacBook Pro 2.53 Intel Core Duo, 4 GB RAM, OS X 10.7.2]
[Version 1.0.3]


burypromote

+2
Weasel had trouble on 16 Jan 2014
I now have a G5 with a 64 bit dual processor. I tried to launch SixtyFour v1.1.0, it bounced in the dock then disappeared. I made a copy of the Problem Report to send the developer. Clicked on the 'contact us' on their home page but nothing happened. HELP!
[Version 1.1.0]



Hecaspari rated on 09 Aug 2012

[Version 1.0.6]



bcx86 rated on 03 Jul 2012

[Version 1.0.6]


Downloads:6,648
Version Downloads:533
Type:Utilities : Optimizers
License:Demo
Date:01 Jan 2014
Platform:PPC 64 / Intel 64 / OS X
Price: $2.99
Overall (Version 1.x):
Features:
Ease of Use:
Value:
Stability:
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SixtyFour is a memory optimizer and system utility for 64-bit-capable hardware running Mac OS X 10.5 or higher.

SixtyFour presents a list of 64-bit apps that can open in 32-bit mode and facilitates the setting of a preference to force a listed app to open in 32-bit mode.

An app opened in 32-bit mode uses significantly less memory than when opened in 64-bit mode.

Running most if not all apps in 32-bit mode on systems that have little memory available could potentially lead to an increase in overall system performance.


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