Thank you for purchasing through links and ads on this site.
OWC / MacSales.com...
diglloyd Deal Finder...
Buy other stuff at Amazon.com...
Capacities up to 56TB and speeds up to 1527MB/s
Handpicked deals...
$1299 $1169
SAVE $130

$380 $280
SAVE $100

$1798 $1598
SAVE $200

$3297 $2797
SAVE $500

$3397 $2797
SAVE $600

$150 $90
SAVE $60

$1398 $898
SAVE $500

$3698 $2998
SAVE $700

$2998 $2498
SAVE $500

$1999 $1588
SAVE $411

$1799 $1299
SAVE $500

$1999 $1199
SAVE $800

$2299 $1599
SAVE $700

$2399 $2049
SAVE $350

$2799 $2399
SAVE $400

$2799 $1899
SAVE $900

$1199 $898
SAVE $301

$1349 $1049
SAVE $300

$997 $897
SAVE $100

$2099 $1699
SAVE $400

$1999 $1369
SAVE $630

$1999 $1599
SAVE $400

$1999 $1588
SAVE $411

$1329 $929
SAVE $400

$4499 $3999
SAVE $500

$329 $329
SAVE $0

$1499 $999
SAVE $500

$1399 $1099
SAVE $300

$1499 $1299
SAVE $200

$2199 $1999
SAVE $200

$3399 $2199
SAVE $1200

$1279 $719
SAVE $560

Upgrades: How Much Memory?

Last updated 2010-10-25 - Send Feedback
Related: how-to, memory, software

Your Mac's CPU cannot run faster than its rated speed, but you can minimize idle time with enough memory. With too little memory, your Mac has to use the disk, so everything slows down:

  • Your Mac has to constantly swap between the memory chips and the drive ("virtual memory"). As a result, your Mac crawls.
  • With “extra” memory, your Mac can keep programs and files in memory ("caching"). Quit and relaunch a program? Watch it start in a fraction of the time! Or, keep all your programs open at once.

Simple rule—

Job size — enough is enough (memory)

Monitor your memory usage.

All simultaneous activities make demands on available memory:

  • Mac OS X itself consumes a good chunk of memory. Figure 1GB overhead for OS X itself.
  • Figure 1GB free memory to avoid speed problems.
  • Each running program takes memory;
  • Some programs require large amounts of memory to work efficiently (Photoshop).
  • Some programs have peak surges of memory use that come and go quickly when there is enough memory, but cause massive slowdown without enough.
  • Look to have at least 2GB free to avoid frustration during peak usage.

Memory sources

Click to view recommended memory

I don’t fool around with bargain basement memory— I want high quality at a affordable price.

Read my thoughts in Memory Upgrades — How Does Your Vendor Test?. The antics of some vendors are disturbing; I’ve seen some vendors announce “compatible” memory well before production Macs are available; they can’t possible have tested final production machines.

No vendor has 100% fail-safe memory, so you might want to test your entire system reliability using diglloydTools MemoryTester.

But if you’re upgrading an entire system, you might want it all done in one job, so check into an MPG Pro Laptop and/or an MPG Pro Workstation.

View all handpicked deals...

Samsung 2TB T5 Portable Solid-State Drive (Black)
$380 $280
SAVE $100

diglloyd.com | Terms of Use | PRIVACY POLICY
Contact | About Lloyd Chambers | Consulting | Photo Tours
Mailing Lists | RSS Feeds | Twitter
Copyright © 2019 diglloyd Inc, all rights reserved.
Display info: __RETINA_INFO_STATUS__