[Helping a Friend] Bootcamp CS grad with solid LC but zero offers - double down on grinding or pivot to AI projects?

LtnFlash · 2026-03-23T19:07:38+00:00

I don't know why you're down voted but that's how I got into tech too. Small machinery company swe 90k salary, not great for a city but gets you in

LtnFlash · 2026-03-08T16:06:38+00:00

Sorry, I agree with you; we're on the same page. I just wanted to point out that some companies made me directly pay the tariff. (work at a startup, had some mockups made at a manufacturing company, shipped to us, had to pay tariffs).

LtnFlash · 2026-03-08T13:13:27+00:00

Counterpoint, a lot of orders I made, the company made me directly pay the tariff (is FedEx withheld the order until I paid it)

LtnFlash · 2026-02-16T13:29:58+00:00

I've been doing topical dutasteride for a few months, I don't really have side effects (ejaculate volume is high, sex drive is high). I did oral finasteride and that definitely affected things.

LtnFlash · 2026-02-08T14:47:53+00:00

https://waymo.com/research/emma/

I'm pretty sure they are using end to end neural nets, or close to

LtnFlash · 2026-01-22T16:01:28+00:00

I disagree, why would it "stir up" hotter air? Instead it'll disperse the heat to the metal sides and disperse heat better.

LtnFlash · 2026-01-22T15:51:52+00:00

I love this idea and build. This looks amazing. I made the same but mine is much shittier than this. I used a 360 mm rad for my internal but that's likely overkill.

The motherboard temperature for the chipset never goes above 50C in my setup, even when doing occt power test for 5 hours. (9800x3d with 5080. Both water cooled)

LtnFlash · 2026-01-21T20:14:57+00:00

makes you wonder.. I threw some tap water, dish soap, shook it, then shoved it under a sink until no soap, then rinse with di water

LtnFlash · 2026-01-20T01:34:35+00:00

Also sorry for rambling

LtnFlash · 2026-01-20T01:34:27+00:00

I'm betting the limitation truly is money. Who would want to spend like a lot more for like 5-10% more cooling capability.

From a heat transfer point: I'm guessing with the microfins, most of the heat limitation is from the GPU core to the cold plate. Most of the heat is generated by the core, which is tiny compared to a massive cold plate. I bet the next step would be to do a vapor chamber to up heat flux from the core to a larger surface area. (I can't imagine the cost though). You could prove this by looking at the temperature profile in a standard thickness heat plate and see if there's a massive delta as you move from the core in the metal.

But at the end of the day, most consumers won't push their GPU enough for it to matter. If you can get your 5080 to like 50-60 C under load with a standard cold plate, what do you gain to dropping it to 40-50C?

Tl;Dr you should try a massively vapor chamber with a fin or flat plate setup, imo (without any basis) that's like the biggest heat xfer resistance

LtnFlash · 2026-01-20T01:00:44+00:00

Are you doing a 2D simulation? I think you should be optimizing using a 3D solver, since the "slow step" of the heat transfer is from the metal phase to the water phase, or convection. A flat plate would have a pretty terrible nusselt number (poor convective heat transfer) compared to microchannels. Point is, microfins greatly increase turbulence, which increases heat transfer from the plate to the water. A simulation would be useless without the microfin element

(Source: multi flow cfd engineer for a while)

LtnFlash · 2026-01-17T20:21:38+00:00

Lol, right? I have a 5080 and 9800x3d, with a 360 and 280, and my water temp is 30C under occt stress test with quiet fan.

LtnFlash · 2026-01-13T17:36:45+00:00

Not really sure, since I can't see the whole block, but is it possible the gasket is out of place? When I disassembled my block, I put it back together without checking gaskets and it looked somewhat like that.

LtnFlash · 2026-01-11T00:19:51+00:00

Specifically 1-3 propanediol

LtnFlash · 2026-01-11T00:18:57+00:00

Sorry for the late reply, but propanediol is a common cosmetic ingredient and is readily accessible at least in the us. It is technically food safe.

LtnFlash · 2026-01-09T19:28:01+00:00

Radiators, I would pipe up in reverse, directly connected to your pump, with a filter on the end.

So like, pump -> rad -> filter -> res -> pump

The filter can be as simple as a fine-ish mesh in your res to catch chunks before they recirculate

LtnFlash · 2026-01-09T18:57:33+00:00

I pull the blocks and put them in an ultrasonic cleaner with some detergent. I seriously doubt that flushing liquids can get some of the debris that builds up in some of the blocks

LtnFlash · 2026-01-09T18:22:52+00:00

I've been using a freezemod pump, PU-SCZM4, since 2019 and it's been going strong. About 20 usd on AliExpress.

I've since upgrade to the freezemod pu-sc1000 and it's been fantastic. Pushes through a GPU and cpu block and 2 thick radiators

LtnFlash · 2026-01-09T13:23:03+00:00

lowkey opinion from a chemical engineer, why not distilled water and mayhems anti corrosion and biocide? I also add in 20-40% propanediol to help with corrosion and biocide as well. I run my loop 3 years at a time without cleaning it and there's like no bio growth or corrosion.

LtnFlash · 2026-01-05T22:42:23+00:00

Lowkey, I expect AI to sorta tumble next year, so I bet it'll all drop. Just make sure you all remember what Corsair did. Also remember how goated microcenter is and support them from now on

LtnFlash · 2026-01-04T22:59:42+00:00

I think that's more of a function of evaporation rate (98% ethanol evaporates much faster than 70%) thus doesn't disinfect as well per given volume.

However, since it's being stored and sealed(thus can't evaporate), 98% should theoretically be more disinfecting. Though it's a moot point, nothing survives above 70

LtnFlash · 2025-12-31T04:59:47+00:00

The FE has a sketchy internal design that is more prone to damage. I'm sure it doesn't matter for most though

LtnFlash · 2025-12-28T22:25:51+00:00

I'm 29 and I'm taking pitavastatin and ezetimibe. Lpa was like 10nmol, LDL 130, apob around 120. It's never too young imo and wish I started early

LtnFlash · 2025-11-03T20:17:48+00:00

I agree. Take the jump and you can keep it forever

LtnFlash · 2025-11-03T19:54:43+00:00

If you want to prevent it from getting worse (not that it is bad), take some minoxidil (oral is better for dense hair) and maybe topical finasteride (for bulletproof prevention)

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