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Mac pro 4.1 to 5.1 - RAM stays at 1066mhz

M

mistasparkaru

macrumors newbie
Original poster
Apr 19, 2010
20
0
I have just done the firmware update, I kept my original CPU a 2.66 Xeon but upgraded the ram to 16GB 1333mhz RAM

OSX still recognizes the ram as 1066mhz

I have held the internal reset button down for a few seconds with the plug out but its still the same.
 
I

Inconsequential

macrumors 68000
Sep 12, 2007
1,978
1
Single threaded performance is the same for the w3580, so if you find one for a stonking price then it might be worth it over the w3680.
 
Darkvader75

Darkvader75

macrumors newbie
Jan 14, 2018
9
4
Michigan
mistasparkaru said:
I have just done the firmware update, I kept my original CPU a 2.66 Xeon but upgraded the ram to 16GB 1333mhz RAM

OSX still recognizes the ram as 1066mhz

I have held the internal reset button down for a few seconds with the plug out but its still the same.
Click to expand...

Reset the PRAM comand option P and R I believe and then it will redetect the ram moduels to 1333.
I just got it working.
 
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