All Posts by Date or last 15, 30, 90 or 180 days.
also by Lloyd: diglloyd.com photography and WindInMyFace.com
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 $899
SAVE $400

$1499 $999
SAVE $500

$1499 $1019
SAVE $480

$1799 $1379
SAVE $420

$3698 $2998
SAVE $700

$2397 $1897
SAVE $500

$1199 $898
SAVE $301

$1299 $1169
SAVE $130

$4499 $3999
SAVE $500

$1399 $1099
SAVE $300

$1499 $1299
SAVE $200

$4499 $3149
SAVE $1350

$2299 $1599
SAVE $700

$1799 $1379
SAVE $420

$2998 $2498
SAVE $500

$2199 $1999
SAVE $200

$430 $220
SAVE $210

$3399 $2199
SAVE $1200

$6299 $3599
SAVE $2700

$398 $278
SAVE $120

$1499 $1019
SAVE $480

$1279 $719
SAVE $560

$1699 $1549
SAVE $150

First Look: Apple MacBook Pro 2.5 GHz

My 2011 2.5 GHz MacBook Pro arrived today (4GB Apple memory).

I will be installing 16GB of OWC memory, and a 240GB OWC 6G SSD very soon.

Tests that follow are with the Apple 4GB standard memory (2 X 2GB).

Compute intensive benchmarks

The SHA1 hash has moderate memory access, pure CPU test shown below.

As expected, the 2.5GHz model is incrementally faster than the 2.3 GHz model, by about 6-7% for these tests for up to 4 CPU cores.

Obviously, there is not a huge advantage for a Mac Pro for general CPU intensive tasks (but a Mac Pro has much better expansion options).

MemoryTester 'compute' for SHA1 hash speed
MemoryTester 'compute' for SHA1 hash speed

Memory speed

The puzzler is computing that is memory intensive— why is the new 2.5Ghz model slower? Is Apple using some kind of slower memory design for its 4GB memory configuration? I will retest once I have the OWC 16GB kit installed.

Also, I tested my 13" MacBook Pro with the 8GB kit (2 X 4GB), and memory speed is testing about 12% faster with the 13" model than with the 17" MacBook Pro. So there is some funny business here with Apple’s 4GB configuration.

MemoryTester 'compute' for SHA1 hash speed

MacPerformanceGuide.com
View all handpicked deals...

Apple 21.5" iMac with Retina 4K Display (Mid 2017)
$1499 $999
SAVE $500

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__