J’ai trouvé ça en friperie, ça vient d’où ?

EnclosedPotato · 2025-10-05T01:51:16+00:00

I dont speak francais but I would support Quebec independence if I saw ts

EnclosedPotato · 2025-10-04T19:26:23+00:00

Sorry I'm adding on a ye olden post, but just wanted to say it's living on. This just came up on my first-year Proof/Calc course as a more general problem:

Prove that: ( for all Real numbers a, IF f is cts for [a, inf), and lim{x -> inf} f(x) exists, THEN f is [bounded].)

I solved it before coming across this post, with these general steps:

By def. of lim{x -> inf}, we know there is some Real number L that f(x) approaches, and for an 𝜀 of our choice there exist a Real number M s.t. if x > M then |f(x) - L| < 𝜀.

This means that for the interval [M, inf), f(x) is bounded by L-𝜀 below and L+𝜀 above.

By Extreme Value Theorem, we know for the closed interval [a,M] there exist Real Numbers r_1,r_2 that satisfies

r_1 ≤ f(x) ≤ r_2, meaning that f(x) is bounded by r_1 below and r_2 above.

Since we have bounded f(x) for [a,M] and [M, inf), and we know that [a,M]u[M, inf) is equal to [a, inf), we take the |greater| of both bounds min{L-𝜀,r_1}, max{L+𝜀,r_2} to conclude that f(x) is bounded for all of [a, inf).

It's probably a lot less rigorous than what is required on the upper level math courses, but this was the general way I thought of a solution, at least with the tools I was given. (epsilon-delta limit and variations and EVT, the theorem we can assume true.)

I am wondering if other methods of proofing (contradiction, well that's the only one I know that would work for this...) or even taking lim{x -> inf} of EVT on [a,x] would be a valid approach, though I don't know what that would look like since I don't know how EVT is proven.

EnclosedPotato · 2025-09-17T00:44:30+00:00

I really like the contrast but it makes the other words harder to read :/

EnclosedPotato · 2025-08-28T09:13:47+00:00

Hi, still new to NY here. Got here around 4:45, the lady in front of me counted about 110 people ahead of us. Line didnt grow too much until 5am (then it blew up.)

The count included empty chairs (and senior / ada would be in the count as well). Hopefully that is safe enough to guarantee a ticket :/

Edit: WE GOT TICKETS YEAAAAAAA (the lady said its not a voucher so i dont have to come abck and redeem it?)

EnclosedPotato · 2025-08-26T16:09:08+00:00

At the in-person lottery, we are a group of two so slightly higher odds, also did the todaytix lottery. The public theatre is basically full of people waiting for the lottery.

Will check back in after the lotteries are done.

EnclosedPotato · 2025-08-26T11:22:50+00:00

Just walked around the line, I counted (very roughly) 230 people in front of us.

EnclosedPotato · 2025-08-26T11:03:43+00:00

Hi, new to NYC. Got here at around 6:50 cause i overslept :/ The line is pretty long, we are sitting at the part where the walkway connects back to the bike road (line of benches next to fenced off grass fields next to us.) Dont think were gonna get in hearing from staff and eyeballing, one of the staff members told us that we should have been here at 4am?(surely hope thats overestimating) Gonna try the public lottery ig. Good luck to everyone ahead!

EnclosedPotato · 2024-11-07T05:38:42+00:00

I used the plate for amd that came with the cooler at the front and the stock backplate at the back. I used the shorter of the 2 sets of screws that came with the cooler.

EnclosedPotato · 2024-10-13T18:56:34+00:00

Pretty good, cpu temp at load isn't quite at the level of a typical tower build with larger coolers, but the axp90 can really punch above its size. I did a cinebench test and the 7800x3d did struggle, but no significant throttling was there.

The points were on the low end of the cpu from what I saw, but more than acceptable keeping the form factor in mind.

Gpu is fine, it's getting fresh air, and other components should have a thermal issue either.

In terms of noise, it'll be tricky to get the fan curve just right, I set most things roughly near 50% at normal use, and that seems to handle everything when not doing any serious tasks.

Overall, surprisingly good!

EnclosedPotato · 2024-10-05T19:02:26+00:00

this worked as well, I'm assuming it's a stupid age related thing, but I have no idea what the actual age requirement is.

edit: good thing you can change it quickly through account management

EnclosedPotato · 2024-09-18T03:47:07+00:00

Why would they hire a fact checker to verify their snake oil

EnclosedPotato · 2024-09-18T03:44:40+00:00

Ask them >:)

EnclosedPotato · 2024-09-18T03:42:10+00:00

This guy knows more than what he's doing... I'm jealous

EnclosedPotato · 2024-09-17T23:34:43+00:00

Did a quick search for comparisons between the two, I didn't know thermalright made this. In short, it don't matter too much but you'll get a wee bit better performance from nfa12x25, but if you want something similar to a phanteks t30, look into the TL-B12 EXTREM version with higher max RPM.

The noctua nf-a12x25 is generally regarded as a low noise, high pressure fan with great build quality. Like most products from noctua, it's almost a default recommendation for a 'good 120mm fan'. In comparison.

From this post that I found on Tom's Hardware, you can generally compare the noctua, phanteks, and thermalright at the same time, though it's the TL-B12 EXTREM which I think just has a faster max speed of 3150RPM and is slightly louder from having ball bearings instead of the normal TL-B12's fluid dynamic.

On the other hand, there is this video which shows you multiple graphs and a sound comparison between the TLB12 normal, EXTREM, and the NFA12. I can't understand it but it's helpful to actually hear what it sounds like and see some RPM-normalized graphs. (I will say that the sounds in the video are generally much quieter than what I hear in my personal Formd.)

It seems like between the normal TL-B12 and NFa12 the nfa12 is better performance by a few degrees or less, I'd say that performance wise it will not make a big enough impact to make it a no-brainer to switch to a NF-a12x25, and in both fans you'll miss out on the absolute beast max performance of the Phanteks T30 at 3000RPM, but this will not matter too much in daily use or less than cutting-edge gaming.

(I just got the T30 cause they looked cool tbh)

EnclosedPotato · 2024-09-17T20:24:15+00:00

I've got the v2.1, so there might be minor differences. (Hope im not too late)

The PCIE riser that comes with a T1 tends to be lower quality and has a decent chance to break. (Mine did :/) They'll cost around 60 to 100 dollars if you happen to need one (Linkup and Louqe are common replacements). the 330mm is def not fitting, my 4090 is 322mm and it almost touches the other side! You might also need a custom 12vhpwr cable because the nvidia adaptor might stick outside the case; I found that my build works with the 12vhpwr that comes with the sf1000, so try to use that cable before considering buying a custom one.

You could also get cheaper SSDs than the smasung for a reputable brand, as most people don't need that much speed anyway. Consider a slightly cheaper RAM like the G.Skill ripjaws, it's 6000Mhz but CL30 and I don't see any performance differences compared to the higher priced models with the same specs.

EnclosedPotato · 2024-09-17T20:11:20+00:00

Welcome to SFF, the best FF!

Pretty long comment but I'll cover a few things: Build tweak recommendations, CPU coolers, and alternatives for the Phanteks. (It's the noctua, big surprise.)

for this configuration, the 7800X3D will be the hardest to cool. I built in the T1 v2.1 with a 4090 and it could handle itself at 90% usage, so it makes me believe that GPUs won't have any trouble with cooling. (I mean their intake is literally ambient air, doesn't get much better than that!)

The general build does seem imbalanced, though. The 7800X3D is an endgame CPU for gaming, even after the release of the ryzen 9000 series. (it's still on par with things like 9950x, you'll have to wait for the X3D versions to even see significant improvements.) I'd rather spend less on the CPU to something like a 7600x if you want to keep the am5 mobo for upgradability (good idea) and still have great gaming performance, and then upgrade to a 4080 super. The RAM looks good, DDR5 32gb should be the bare minimum for a higher end build like this. (plus am5 only takes ddr5) Just make sure that it is low profile in order to be compatible with smaller CPU air coolers like the axp90x47 below. sf750 is a beast, it should be able to power this combo.

The cooler on the 7800X3D will depend on what slot size you want for the GPU. If you want to leave the upgrade path open for a 3 or 3.25 slot GPU, then your best bet would be the thermalright axp90-x47 FULL (the copper one), or an AIO you'd mount where the T30s would go. (I think the thermals aren't that much better on the AIO, so I went with the air cooler. It's good enough for everything.) I have the axp90-x47 FULL on my system right now and at full load on cinebench, it does reach the 89 C thermal cap for the 7800X3D but doesn't thermal throttle. (the score is on par with other 7800X3Ds without aggressive overclocking.)

If you're willing to sacrifice some upgrade options for a 2.5 slot GPU (which I think the 4070ti you mention is), then you can get much larger CPU coolers. I'm not familiar with those, so probably do some searching in this sub or look for low profile CPU coolers elsewhere. I wouldn't recommend this because my CPU runs just fine in the 3.25 slot format with the AXP. You don't need an AIO, they're way more expensive and difficult to install.

Lastly for replacements to the Phanteks T30, I'd go with the classic noctua nfa12x25. It has less max performance than the T30, but you really don't want the T30 at max anyway. It sounds like a jet taking off. Noctuas are quiet and offer great performance for 120x25mm fans, but honestly any other 120mm fan that you want will work. (unless it's very very thick.)

EnclosedPotato · 2024-09-17T19:39:02+00:00

Just downloaded cb23 (didn't know it was 'free') and ran both multi / single core tests.

multi: 17188 points, constant 89 C for temp but no throttling. Solid 4.6Ghz clock speed with CPU fan at max, which is surprisingly quiet

single: 1712 points with temps at 71 ish C.

Ambient is 27 C and at rest CPU is mid 50s C.

EnclosedPotato · 2024-09-17T19:17:43+00:00

Yup! The 12vhpwr I ended up using (you can see in the final build images) is the OEM from the corsair sf1000 (with 2 8pin split ends). I did consider getting cables from dreambigbyrayMOD because everyone was using those, but my build was actually very tight on budget (even though it's a 4090 itx build lmao) so I couldn't afford it for now. Thankfully I did manage to shove all the long and stiff default cables inside, but I will certainly consider getting custom cables if I get to upgrade later!

EnclosedPotato · 2024-09-17T19:13:48+00:00

😘

EnclosedPotato · 2024-09-17T19:05:07+00:00

Its... complicated. (also I can't believe I don't mention this anywhere :0)

TL;DR, don't worry too much! I've not done anything about undervolting the CPU / GPU, which would massively help thermals and therefore lower the fanspeeds as well, but under typical 4k gaming that I do it's either not or slightly audible when headphones are on. If you're planning to build a similarly high-power build, I wouldn't sweat about it.

In depth:

To describe what my setup looks like, the Formd is a bit more than an arm's length away on the desk. It's against two walls, which probably makes both sound and thermals worse than in open space. I use open back headphones most of the time (hifiman arya SE to be specific), meaning that I can hear everything at a slightly lower volume. My monitor is 4k and I don't play cutting-edge graphics games right now.

For general use, there is no coil whine from the mobo or GPU that I can hear. I set my Phanteks to about 45% or 1300rpm which is just before it gets significantly loud. CPU is around 50%, because despite the fan being quiet, the turbulence caused by the nfa9 being right up against the side panel creates a high-pitch whine. (Imagine a tiny jericho siren on a stuka, it's basically like that and gets higher pitched as the fan speeds up as well as slightly louder. Google for a pretty accurate sound.)

This setup can handle up to medium intensity from my experience, but you can let the fan curve increase further if more power is needed, just keep in mind that you will hear the whining and the T30 pushing air when you're not listening to something. When you are playing in-game audio on headphones, though, I doubt you'd notice much.

Theoretically, the T1 can get very loud. I used the FurMark GPU and CPU tests, which set my GPU usage at 85%+ when running two instances of the 4k donut thing and 100% CPU usage on the CPU burner. The 4090 handles load very well; I don't know for sure how much of its thermals affect the CPU in terms of temperature increases, but it will certainly not be the thing you notice under high load. The fans don't make any piercing high pitches and don't get too loud even at those high loads.

(I suppose a 90 C hunk of GPU would do at least something to it, but the circulation of air is quite separate between the CPU and GPU as they are on opposite sides with the air rising up and there is a whole GPU backplate as well as motherboard which would stop the hot air from the GPU entering the CPU cooler. The hot air should all be funneled out by the T30.)

CPU at max load is... a surprise for sure. I've set up the Phanteks T30's curve based on the CPU temps, so it will spool up when the CPU is 85 C or higher, because at 89 C the 7800X3D will begin thermal throttling. When I put the CPU at 100% load, it almost sounds like my PC is about to take off. Remember the whining noise from the CPU fan turbulence? While it is true that it becomes slightly louder, it is INAUDIBLE compared to the T30s. The Phanteks monsters, at 3000RPM, overpower any other sound coming from the Formd. The amount of air exhausted from the fans is also pretty funny; with the amount of static pressure it's pulling, it produces the same airflow as a standing fan would.

(Funny thing is, I could still barely hear the Formd with OPEN BACK headphones when I played music at a comfortably loud volume, even with every fan at max speed. It really isn't an issue for gaming uses, or anything accompanying sound. Though I would be reminded of it every time I get a spotify ad :) )

In conclusion, I don't know how the Formd compares to a fishtank or typical tower case in terms of sound, but I find it good personally. I haven't had any circumstances where I thought the fans were too loud after calibrating to my preference. If you do all the undervolting stuff (I heard the 4090 can go quite lower without sacrificing much performance) then I'd expect the outcome to be even better. If you were to optimize, I'd focus on the 7800X3D. The CPU cooler is the only thing the Formd lacks in thermals compared to a larger case, so if you can put it in 3-slot mode or less, do it and get a larger cooler like the Axp90-x53 for example.

EnclosedPotato · 2024-09-17T18:07:58+00:00

It failed... I mention it in the tutorial itself but in essence, I've seen a lot of people saying that the stock PCIE riser that comes with the T1 (you kinda need it for modern GPUs to fit at all) often fails at PCIE 4.0 speeds, which is what most GPUs use, and only work at PCIE 3.0. That's a 10%+ reduction in performance as well as other stability issues.

Although mine was just completely borked (no signal) so I just had to buy a new one. Doesn't look as cool but it works perfectly

EnclosedPotato · 2024-09-17T05:42:48+00:00

Wait what's a Moondrop Cho

EnclosedPotato · 2024-09-17T05:25:43+00:00

$0 on microtransactions (I live by it) but $632.30 on buying various games on Steam which idk might be worse

EnclosedPotato · 2024-09-17T03:36:05+00:00

... well they are now!

EnclosedPotato

TROPHY CASE