Thank you for purchasing through links and ads on this site.
OWC / MacSales.com...
diglloyd Deal Finder...
Buy other stuff at Amazon.com...
Upgrade the memory of your 2018 Mac mini up to 64GB

MacBook Pro i7 CPU Performance and Memory Speed

Last updated 2010-04-20 - Send Feedback
Related: bandwidth, laptop, MacBook, MacBook Pro, Macs, memory

This page analyzes raw CPU performance.

See the system configuration notes.

MemoryTester — memory bandwidth

See MemoryTester for details on this test.

The memory controller of the Core i7 delivers up to 46% better bandwidth for multi-threaded code! This is a real test with threads(pthreads) in a real C++ program, not theory.

MemoryTester — compute

See MemoryTester for details on this test. The graphs below are for 1/2/3/4 CPU threads on the horizontal axis.

Even though memory itself is the same speed (1066MHz), the memory controller of the Core i7 delivers superior bandwidth.

Upgrade Your Mac Memory
At much lower cost than Apple, with more options.
Lloyd recommends 64GB for iMac or Mac Pro for photography/videography.

SHA1 hash (CPU task with memory access)

Hyperthreading (3 or 4 threads) delivers a small improvement here, but not much.

MemoryTester compute command

Pure computation with no memory access

Hyperthreading (3 or 4 threads) delivers almost zero improvement.

MemoryTester compute command

Pure memory access: copy and compare memory.

The memory controller of the Core i7 delivers up to 29% better bandwidth with two threads copying and comparing memory.

Hyperthreading (3 or 4 threads) achieves nothing, as expected.

MemoryTester compute command
B&H Deal ZoneDeals by Brand/Category/Savings
Deals expire in 11 hours unless noted. Certain deals may last longer.
$3097 SAVE $200 = 6.0% Nikon D850 DSLR in Cameras: DSLR
$1797 SAVE $200 = 10.0% Pentax K-1 Mark II DSLR in Cameras: DSLR
$998 SAVE $400 = 28.0% Sony a7 II Mirrorless in Cameras: Mirrorless
$1798 SAVE $200 = 10.0% Sony a7R II Mirrorless in Cameras: Mirrorless
$2798 SAVE $400 = 12.0% Sony a7R III Mirrorless in Cameras: Mirrorless
$3998 SAVE $500 = 11.0% Sony a9 Mirrorless in Cameras: Mirrorless

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__