Become a MacRumors Supporter for $25/year with no ads, private forums, and more!

Sirmausalot

macrumors 65816
Original poster
Sep 1, 2007
1,073
275
Here is some info on the next generation 7nm AMD chips likely to power the rumored 16"MBP. I would assume these could also make their way over to the iMac as well. They seem to be lower power, higher performance and the correct increase in "compute units" whatever those are


Manufacturers will be releasing gaming laptops with these mobile chips in November, so that could include Apple who has a very close relationship with AMD. And Catalina now references these cards as well. So a November launch for the new MBP 16" still seems likely. Press release today perhaps?
 
Last edited:

leman

macrumors G5
Oct 14, 2008
14,746
11,123
By the way, these GPUs are already supported in 10.15.1 I also think this means that we will see some Apple hardware with Navi GPUs very soon.
 

MrGunnyPT

macrumors 65816
Mar 23, 2017
1,110
651
By the way, these GPUs are already supported in 10.15.1 I also think this means that we will see some Apple hardware with Navi GPUs very soon.

Navi GPUs are indeed support not just for only external use but for internal use.. I do expect the 16" to feature Navi.. I mean if it doesn't no purchase from me.
 

leman

macrumors G5
Oct 14, 2008
14,746
11,123
"The chip is specified with a TDP of 85 Watt"

Not suitable for MBP, unless heavily underclocked or Apple abandon USB-C for power delivery.

Binned chips + die thinning, and TDP will drop. AMD already did this for Apple with Polaris and then Vega. Not to mention the they might pair Navi with HBM2, which would cut down RAM power consumption. I'd expect the TDP of the Macbook Navi to be around 50W, same as Vega.
 

Sirmausalot

macrumors 65816
Original poster
Sep 1, 2007
1,073
275

leman

macrumors G5
Oct 14, 2008
14,746
11,123
I think you are confusing CPU tdp and GPU tdp. The current Vega 20 in the 15 inch Macbook Pro is rated at 100 tdp. So this being a 7nm process is only 85 and will help battery life if included in the 16" It also justifies a.higher base price.

The Vega in the MBP is 50W TDP. I have tested it quite extensively... not to mention that 100W TDP wouldn't make any sense, that's more than the laptop's charge capacity.
 
  • Like
Reactions: gadgetfreaky

ugru

macrumors 6502
Sep 8, 2002
498
527
Caput Mundi
Binned chips + die thinning, and TDP will drop. AMD already did this for Apple with Polaris and then Vega. Not to mention the they might pair Navi with HBM2, which would cut down RAM power consumption. I'd expect the TDP of the Macbook Navi to be around 50W, same as Vega.

Then it will be a totally custom GPU, not a RX-5500M which comes with GDDR6, so my point stands....This GPU could not fit in the current power and thermal envelope of the MBP.

But Apple is known to use custom silicon, so what you say is possible. It is incredible what engeneering gymnastics Apple has to do to avoid admitting they were wrong in adopting USB-C for power delivery also in their workstation-class laptop...

I think you are confusing CPU tdp and GPU tdp. The current Vega 20 in the 15 inch Macbook Pro is rated at 100 tdp. So this being a 7nm process is only 85 and will help battery life if included in the 16" It also justifies a.higher base price.

In the link I provided there are the power figures under heavy load: "between 64 and 105 Watt".
Even under conservative assumptions, this, coupled with the notoriously power hungry H-series CPUs, will exced the power avaliable to USB-C.
When under heavy load, a laptop like this will start sucking the battery even with the power chord connected....
 

leman

macrumors G5
Oct 14, 2008
14,746
11,123
Then it will be a totally custom GPU, not a RX-5500M which comes with GDDR6, so my point stands....This GPU could not fit in the current power and thermal envelope of the MBP.

What matters is the fact that this chip (Navi 14) is out. The exact configuration (RAM type, TDP, number of cores) can vary different (after all Intel ships the same chip as low-powered 15W laptop chip or a 65W+ hot desktop chip).

On paper the Polaris chips used in the current line are also supposed to be hotter, but AMD and Apple have managed to keep their TDP at under 40W with the performance levels of 70W counterparts.


It is incredible what engeneering gymnastics Apple has to do to avoid admitting they were wrong in adopting USB-C for power delivery also in their workstation-class laptop...

Apple never had a workstation-class laptop, if by "workstation-class" you mean things like ZBook 15, and they probably near will. Apple does use a lot of features that are commonly found only in workstation-class laptops in the Mac Book Pro.
 

danwells

macrumors 6502a
Apr 4, 2015
591
444
It is a workstation class laptop, but in the ZBook Studio / Lenovo P1 Gen 2/ Dell Precision 5540 range, rather than the ZBook 15/Lenovo P53/ Dell Precision 7540 range. 15" notebook workstations have split into two groups, ~4-4.5 lbs and ~6 lbs, and the MacBook Pro is right on spec in the lighter group, although the "order it like you want it" element is unusual - the others have at least limited upgradability (RAM, sometimes SSD).
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.