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This laptop is a local AI monster: Lenovo ThinkPad P16 Gen 3 review

Started by Redaktion, Yesterday at 17:18:50

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Redaktion

The ThinkPad P16 is Lenovo's most powerful ThinkPad laptop. With the new ThinkPad P16 Gen 3, Lenovo evolves this 16-inch workstation to be a bit more mobile, while still delivering serious performance - however, that performance is limited by one specific factor.

https://www.notebookcheck.net/This-laptop-is-a-local-AI-monster-Lenovo-ThinkPad-P16-Gen-3-review.1221962.0.html

Dave10

Great review of the P16 GEN 3! It seems that powering such a class-leading workstation with just one Thunderbolt cable isn't much of an issue in most cases.

I wish they could bring the six-button physical touchpad back. But what I really want to see is what the "Space Frame", aka "Roll Cage 2.0", looks like underneath the keyboard (I'm an old fan of T61 BTW).

4k for only dual-channel

Quoteup to 192 GB RAM
Good.
Quote67084 MB/s
Bad: 4000 bucks for just a common dual-channel (=128-bit) system, like 99% of consumer PCs and cheap laptops out there.
Just a reminder of how much faster AMD Strix Halo RAM is:
Bandwidth:
ThinkPad P16 Gen 3: 89.6 GB/s = 128-bit * 5600 MT/s / 1000 / 8.
AMD Strix Halo: 256 GB/s = 256-bit * 8000 MT/s / 1000 / 8.
This is 2.86 times faster.
But Strix Halo's problem is that it only goes up to 128 GB RAM.

Over a Strix Halo (laptop), this has a 192-bit 12 GB VRAM GPU, but this is still only 12 GB.
Using this GPU, the prompt processing will be faster than on Strix Halo tho:
3dmark.com/search:
RTX PRO 3000 Blackwell Mobile: "Average score: 12228" (14875 in this review).
AMD Strix Halo Radeon 8060S Graphics: "Average score: 10012".

Judging by the not so huge speed difference (48.6 %), in total, the RTX PRO 3000' (=5070 desktop GPU chip running at lower Watt) 12 GB VRAM are not going to be able to compensate for Strix Halo total almost 3 times higher memory bandwidth when it comes to running AI / LLMs, and a Strix Halo system should be much cheaper, too.

And indeed, using this total memory capacity and speed calculation, Strix Halo wins:
P16 Gen 3: 25267 = 12 GB*672 GB/s + 192 GB*89.6 GB/s.
Strix Halo: 32768 = 128 GB*256 GB/s.

PS: AMD, Strix Halo refresh/sucessor with up to 192 to 256 GB RAM when? (make sure it's not the outdated RDNA3.5 iGPU, tho:
The leaked FSR4 INT8 looks so much better on RDNA3 / RDNA3.5, than what RDNA3 / RDNA3.5 officially support, but AMD is quiet about it (they are not the good guys (anymore/if they ever were)):
youtube.com/watch?v=VPMOjdvmHMk "FSR4 on RDNA3 on Windows!!! How To Guide and Side by Sides Tested on RX 7800 XT"
youtube.com/watch?v=yB0qmTCzrmI "AMD Tried To Hide This From You - FSR 4 INT8 on RDNA 3 & 2 Tested"

youtube.com/watch?v=v70p700D94U And here Owen shows that even AMD's /r/radeon hardcore crowd is starting to get pissed off on AMD for also not releasing FSR4 INT8 (and righteously so, of course).)

zil

The camera bump is atrocious and pointless and the 4 narrower keys left from the Enter key are just inexcusable design errors.

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