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1. #2015 apple macbook pro 13inch retina install#
2. #2015 apple macbook pro 13inch retina 64 Bit#
3. #2015 apple macbook pro 13inch retina update#
4. #2015 apple macbook pro 13inch retina driver#

It seems that the power supply does nothing than charge the battery and the Mac still uses power from the battery although it is connected to AC.Ĭould that be a faulty or failing Power Supply which caused those issues? Or internal cable connections? (same power draw and same Cinebench Score with battery). I also discovered that the Mac doesn't have any performance differences if the AC is disconnected. The frequency of the Iris GPU stays low always, no matter if I will watch a Movie, YouTube or anything, the frequency of the GPU won't go above 600 MHz, most of the time it stays at 400MHz. The frequency of the CPU often reach 3GHz with only about 8 Watts power consumed. The power draw of the whole system, include full brightness screen, is around 35 Watts. The CPU gets about 1820 points in Cinebench R23, the CPU temperature during that marking, stays at, as described before, around 80 Degrees C with fan speed at about 4k RPM (full speed is 6.2k RPM), so the temperature is definitely ok and well below the limit which could lead to thermal throttle. The battery in this MBP was replaced by Apple in Winter 2019 which is in pretty good shape, coconutBattery shows 99% battery health. I have upgraded my SSD from the original 128G one from Apple to a WD SN550 using adapters, runs well and R/W speed normal. I cleaned the internal and reapplied thermal paste (MX-4) of the CPU, didn't help. I also disconnected the battery and power from the MBP for about 30 min, to reset any possible chips.

#2015 apple macbook pro 13inch retina install#

Recently because of the lagging and throttle issues I get my System back to High Sierra, with a clean install (format the SSD and co.), I still experiencing the issues as I described before.īoot-Rom of my MBP is 426.0.0.0.0, SMC Firmware is 2.28f7. It could even get laggy if I play Netflix or Prime-Video on full screen.įirstly I thought it was the Mojave System which could be not well optimized or something like that so I upgraded to Big Sur, but nothing changed.

Sometime it is really frustrating because I can't use the full potential of my Mac. This performance drop occurred back to the time I upgraded my OS from High Sierra to Mojave. Therefore I believe there is something limiting the CPU performance.Īs I didn't recorded the CPU power draw before, and I noticed this issue recently, I wonder if Apple is lowering the CPU performance of older Macs?Īn early review article on Internet ( ) even said that the CPU is limited to 32 Watts, which is higher than the Intel rate. The CPU on my MacBook Pro 12,1 (i5-5257U) would only use up to 18 Watts of power and the system total power usage is well below 35 Watts with a 60 Watt PSU connected and CPU Core temperature under 85 Degrees C (fan speed 80%) while running Cinebench R23. I already posted this on Apple Community but it seems no-one saw my post.

#2015 apple macbook pro 13inch retina 64 Bit#

What issues did you run into when not trying to workaround with these versions? You may have traded on set of problems for another.

#2015 apple macbook pro 13inch retina update#

You need (available via BCA direct download or Apple Software Update on W10).

#2015 apple macbook pro 13inch retina driver#

The corresponding driver versions were and The product versions in Bootcamp.xml were 56ģ.