For minimum requirements, which GHz do you factor?

DougFNJ

macrumors 65816
Original poster
Jan 22, 2008
1,219
772
NJ
On software that has minimum requirements, do we look at standard GHz or Turboboost GHz?

I.e. If a game requires 2.2GHz would a MacBook with 1.2GHz with 2.9GHz Turbo boost, which GHz would apply?
 

Biggie Robs

macrumors member
Oct 21, 2007
41
21
Jamaica Plain, MA
That's a good question. I'm not huge into games, but I do like playing Football Manager. What does "Intel Core 1.8GHz+" mean with regard to the core m5 processor, for example?
 

SteveJUAE

macrumors 68030
Aug 14, 2015
2,767
2,455
Land of Smiles
The rMB being a fanless design means the Turbo boost GHz is not sustainable ie after 60-90 seconds it will throttle back depending on your settings etc in the game, by adjusting the in game settings graphics, resolution etc some games can achieve playable frame rates for casual use.

You really need to see if someone has tried your game to get a real feel of the compromises you may have to accept, differences between the M3,5,7 may only see 3-8 fps on an already reduced performance compared to actively cooled laptops
 

Hellhammer

Moderator emeritus
Dec 10, 2008
22,076
580
Finland
The GHz requirements are very misleading because they don't take IPC (i.e. performance per clock) into account. Basically, a 2GHz Skylake i5 is faster than a 2GHz Sandy Bridge i5 because the Skylake i5 can perform more instructions per cycle due to more sophisticated architecture. In other words, the stated GHz is totally useless as the generation isn't usually mentioned. Your best bet is to search for people who have tried that game on the MacBook and read their experience.
 

Picapau21

macrumors 6502
Apr 26, 2015
401
146
The GHz requirements are very misleading because they don't take IPC (i.e. performance per clock) into account. Basically, a 2GHz Skylake i5 is faster than a 2GHz Sandy Bridge i5 because the Skylake i5 can perform more instructions per cycle due to more sophisticated architecture. In other words, the stated GHz is totally useless as the generation isn't usually mentioned. Your best bet is to search for people who have tried that game on the MacBook and read their experience.
Good point. Ghz went out the window a few years ago. I don't think maximum clock speeds have changed much over the past 10 years but as you say CPU architecture has evolved.

As a simple example a 1.1 Ghz m3 (Skylake) MacBook with a max turbo speed of 2.2 Ghz gets a geek bench score of roughly 4500 which matches my MBP 2010 Core i5's score of 4500 running at 2.53 Ghz (Core i5" I5-540M (Arrandale)).

Very impressive when you consider that the MB processor is completely fanless!!
 

DougFNJ

macrumors 65816
Original poster
Jan 22, 2008
1,219
772
NJ
I appreciate the feedback. It wasn't a specific game or software, but more of a general question regarding what we look for in requirements.
 

Boston007

macrumors 6502
Apr 9, 2010
458
145
On software that has minimum requirements, do we look at standard GHz or Turboboost GHz?

I.e. If a game requires 2.2GHz would a MacBook with 1.2GHz with 2.9GHz Turbo boost, which GHz would apply?
That's easy. In this scenario clearly the 1.2ghz is what you would look at.