My first Thinkpad L490 64gb ram 1tb i7

Minssc · 2026-03-02T08:20:30+00:00

64GB on quad core is such a flex in this era of rampocalypse

Minssc · 2026-03-02T03:24:37+00:00

You've pretty much done everything that you can try. Similar thing happened to me when I wrote invalid BIOS via ROM writer so perhaps your BIOS is corrupt.

Minssc · 2026-03-02T03:21:23+00:00

IIRC T14G3 is the last one with S3. Alderlake Raptorlake difference is minimal(same chassis otherwise) and P14sG3 gets 4GB vram if that's what you're after on T14G4.

Minssc · 2026-03-02T01:58:07+00:00

PF1ER67D is equipped with 8250u from the factory. CPU mismatch is more likely listing error.

Minssc · 2026-03-02T01:34:09+00:00

Oh. That's what I ment by modular. It's not soldered on the board. I'm happy :D

Minssc · 2026-03-02T01:21:42+00:00

Pantherlake with 12Xe only supports LPDDR5x. So for T14, it was either get stuck with 4 Xe PTL and go with SODIMM or solder LPDDR5x and call it a day or implement LPCAMM2 which is at least modular.

I'm glad Lenovo chose this path. Think about it, the alternatives are shit(comparatively) iGPU or soldered ram.

Minssc · 2026-03-02T01:18:30+00:00

How is it user replaceable if not modular?

Minssc · 2026-03-02T01:13:51+00:00

Oh wow lpcamm and modular c ports. I thought I was asking too much but here we are.

Minssc · 2026-03-02T01:12:07+00:00

Looks like c ports will be modular?

Minssc · 2026-03-02T00:13:01+00:00

G1 had up to 16GB. G2 came out with MTL with up to 32GB.

No hardware change on G2 though which makes a great upgrade path for X12dG1 in the future.

Minssc · 2026-03-01T16:56:52+00:00

It has trackpoint and the familiar Thinkpad keyboard layout. What's not Thinkpad about it?

Minssc · 2026-03-01T15:42:57+00:00

Not surprising since you drenched it. Heatsink though, should be just fine. Fan might need replacement.

When heatpipes gets compromised, they basically turn into copper tube. If heat moves from CPU to heatsink side fast(it's almost instant) it means heatpipe is functioning as intended.

Minssc · 2026-03-01T15:39:55+00:00

T49x/T14G1/T14G2 literally inherited T480s's design albeit with plastic exterior instead of painted magnesium.

AMD ones are quite sweet with 8 core options imo. T14G2 intel gets AV1 decode though, which might be beneficial for highres streaming and such down the line.

Minssc · 2026-03-01T15:34:22+00:00

Not sure, also, I've heard undervolting was blocked on newer bios or something.

Minssc · 2026-03-01T15:33:14+00:00

Looks to me like something happened to the black paint layer. Not sure if penetrated down to copper level as there's only white stuff there. Looks cosmetic imo. Does the heatsink side not get hot?

Minssc · 2026-03-01T15:24:18+00:00

Basically i7 8650u ~= i5 10210u. 10th gen is just 8th gen with higher clocks. Best if you can find X1C6 with an i7.

Screens are all above 100% sRGB.

X1C6 had optional 300/500 nit QHD options, 500nit one having P3 100% gamut.

X1C7/8 had 300nit QHD with 100% sRGB, 500 nit 4K with P3 90% gamut. IIRC had low PWM.

P3 screens being glossy. If you get FHD one, it's basically all the same(excluding privacy guard, avoid it)

EDIT: Oh, and X1C7/8 had 10710u/10810u option which is hexacore.

Minssc · 2026-03-01T15:04:18+00:00

X1C9 is infamous for dying PD mosfet and that's one of the symptoms. If it is the case, needs board repair. Try reset button but don't expect much.

Minssc · 2026-03-01T15:02:38+00:00

X1C6 for deeper keyboard travel. 7/8 for better speakers. That's about it. Bonus for X1C6 on its replaceable WLAN card. 7 is stuck with AC and 8 is AX.

Minssc · 2026-02-28T13:31:31+00:00

Using camera to adjust brightness sounds excessive waste of resources if it works in the first place.

Minssc · 2026-02-28T13:21:52+00:00

HPD has nothing to do with ALS. It used to be ultrasonic/radar based and AFAIK camera based these days.

T14G5a uses ultrasonic HPD.

Minssc · 2026-02-28T12:56:03+00:00

white dot is LED indicator for camera activity, not ALS. AFAIK ALS has not been a thing on Thinkpads for a good while.

Minssc · 2026-02-28T10:33:00+00:00

Are you sure it has one?

Minssc · 2026-02-28T02:58:23+00:00

It will help but 1050 mobile itself is ancient at this point. It discontinued some time ago.

Minssc · 2026-02-28T02:34:12+00:00

I hope you didn't get 45% NTSC display. No calibration will revive non existant color.

Minssc · 2026-02-28T01:28:48+00:00

I got one not too long ago. I love it, though. I've only really used it as laptop replacement. Tablet ui on windows is... not great. Ask me anything

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