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Core i9 MacBook Pro Cooling Problems Kill Performance

The MacBook Pro, as the name suggests, is a laptop aimed at professionals. Or at least, it was. The price is high, but in return you expect to get unrivaled performance in a portable package.

With the 2018 MacBook Pro[1], it looks as though Apple has taken a step too far by offering a Core i9[2] 15-inch model without any consideration of the cooling such a high performance chip requires. As ExtremeTech[3] reports, the Core i9 processor Apple chose to use inside the MacBook Pro (i9-8950K) has a base clock frequency of 2.9GHz, which is capable of bursting up to 4.8GHz when necessary. However, testing carried out by YouTuber Dave Lee makes it clear the Core i9 can’t even maintain 2.9GHz, let alone 4.8GHz.

In fact, it ends up running at 2.2GHz due to the heat generated inside the chassis forcing it to throttle.

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You may be thinking, “but it’s still a very fast laptop, right?” but that’s clearly not the case. The thermal throttling is so severe this Core i9 model ends up taking longer to complete tasks than older generation processors. Lee used Adobe Premier Pro as an example, pitting the Core i9 MacBook against a 2017 MacBook Pro using an older Kaby Lake chip with fewer cores.

The older laptop was faster by 11 percent! This isn’t a problem with Intel’s Core i9, it’s Apple’s thermal solution. Apple is a company laser-focused on design and offering the thinnest, most beautiful laptops to the detriment of just about everything else.

In this case it’s cooling that’s insufficient, and it means the Core i9 is completely wasted inside the MacBook Pro. It gets worse, though, as the problem isn’t just limited to the Core i9 model. NotebookCheck[4] tested the 2018 MacBook Pro which ships with the Core i7-8850H and experienced similar throttling problems. It remains slightly faster than the 2017 MacBook Pro running a Core i7-7700HQ, but the gap diminishes the more you use the laptop as the heat increases.

What’s most frustrating about this for new MacBook Pro owners is, Apple either didn’t test the thermals thoroughly enough in these new Pros, or it did and decided the reduced performance was acceptable.

Neither of those are acceptable when Apple expects you to pay upwards of £2,399 for the Pro and £2,799 if you want a Core i9.


  1. ^ 2018 MacBook Pro (
  2. ^ Core i9 (
  3. ^ ExtremeTech (
  4. ^ NotebookCheck (

SZHTSWU Eyeglasses Rack Wooden Detachable Sunglasses Sale Show Display Stand Holder – Price Special


Can use to display all kinds of glasses, such as: sunglasses, eyeglasses, an so on

Also ideal for home jewelry decoration

Suits for store, supermarket, home and so on

Need a simple installation

Smooth surface prevents scratching.

Made of wood, durable and solid to use.

Portable and easy assembling.

Glasses display rack only! Glasses are not included!

Material: wooden After installed size: 34.5*36.2cm Spacing: 6.5cm Package: 1 x glasses display stand

LIQICAI 7L Camping Cool Box Car Mini Fridge Refrigeration Portable Carry Strap 2 Cups Holders On The Top 12V 230V 240V – Special


Function: dual heating and cooling

Cars freezer switch is on “OFF” position, the wire is inserted into a socket in the freezer, and the other end into the car’s cigarette lighter.

Switch to “COOL” and the green light will turn on, which means the cooling function is operating.

Switch to “HOT” and the red light will turn on and it means the heating function is operating.

1. Car refrigerator are electronic (semiconductor) cooling, the temperature inside the refrigerator is determined by the ambient temperature, the temperature inside the refrigerator is lower than the ambient temperature of 18 ℃, so the refrigerator should be placed in a cool place

2. The high summer temperatures, generally 30-35 ℃, so the refrigerator temperature is 12-17 ℃, if the room air temperature hit 25 ℃, the lowest temperature of the refrigerator to be 7 ℃

3. When winter temperatures are below 10 ℃, this time the refrigerator cooling efficiency is greatly improved, the minimum can go to 5 ℃


–1. Don’t put the cloth on the refrigerator.

–2. Keep it away from wet place and inflammable.

–3. Don’t switch to the heating function directly when you use the cooling function. And don’t switch to the cooling function directly when you use the heating function.

You should turn off the switch for about 30 minutes and then you can switch the function.