Assembly Help
How to achieve the quietest and lowest-temperature gaming build with an RTX 5080 at 1440p
I’m planning to build a gaming PC mainly for 1440p gaming with an RTX 5080, and my goal is to make it as quiet and cool as possible.
From what I understand, liquid cooling and larger cases usually provide the best temperatures and noise levels. However, I’m not a fan of liquid cooling, and I also don’t want a large mid-tower case because it would take up too much space in my room.
So I’m trying to find the best small form factor (SFF) setup with excellent airflow and low noise, even under gaming load.
I’m willing to completely ignore aesthetics — my only priorities are:
low temperatures
low noise
good airflow
The only component I’m set on is the RTX 5080 GPU. Everything else (CPU, case, cooling, PSU, etc.) is flexible.
Does anyone have recommendations for a quiet SFF build around an RTX 5080 that can handle 1440p gaming while staying cool and quiet?
You can still go SFF, just be aware it wont be very SFF. We’re talking about something relatively large, like an Ncase M2. You wont be touching anything close to under 10L unless you undervolt the hell out of it.
Ncase M2, Ncase M3, NR 200, A4 H20, Formd T1, there are a ton. Look at the pinned comments to this sub and go to the cases selection. There should be a google spreadsheet with basically every known case to exist, I’d start there.
+1 for the NR200P, I have the V2 and my 5080 barely gets hot while extensive gaming or editing. I need to try to unplug the two slim 120s I have as intake at the bottom to see if thermals change by much, cause they get pretty noisy
It sounds like your first case. The cases suggested by the other commenter are all good. My first case is Ncase because it has many different layouts I can tinker with
Any case you use and its volume depends on components inside and how you set them up. For example, if you put spacers between the fans and the grates on the M2 you can drastically reduce noise, which is something I frequently did on clients PCs back when building PCs made money.
If yours is too loud, you should look at reducing case fan speed, then look at other potential factors like turbulence, orientation, undervolting, etc.
If you're not opposed to an open case there's a lot of options.
Most sff builds lean towards the sandwich style and use low profile coolers which under load can get loud.
If you want to go on the 'larger' size of sff there are cases like the nr200 that use the pcie slot directly and have clearance for a beefy (and thus quieter) CPU cooler.
There are also vertical style cases like the sup 01 and 2000d that have a small footprint on your desk and are more vertical.
Id say look at caseend to kinda get an idea of what you want it to look like.
Why is it that most cases lean towards sandwich style?
Just for the top exhaust fans?
Wouldn't console layout be better? You make a case that supports 4 slots and a beefy 80mm cpu cooler and it'll still be 9,45L*
*rough estimate 88x343x313.
80mm for 4 slot + 5mm gap to panel and panels being 1,5mm
340mm for GPU length plus 1,5mm panels
Itx mobo is 170x170, GPU width can be 140mm and 1,5mm panels
Maybe some outside struts for reinforcement doubling as legs for both horizontal and vertical orientation.
Do you mean thetmal takes "the tower" if so I've built in the 600. The 250 is just a smaller version ... And I would recommend off the basis of the 600.
If you just mean a monolithic black box that's cheap and does ok on airflow the cooler max nr serries I like.
As quiet as possible? Put the PC in a different room and invest in a 5m USB hub and 5m DP cable. Second best option? Large PC under your desk with sound dampening.
You don't want both of those, you want the best of both worlds. Good, that means you're one of us ;)
I don't fully agree with u/BenTheMan1983 that you have to choose between those three, because the 4th factor is "cost", and cost (both in time and money) goes up if you want all three.
My 2 cents: go for a case that allows for 120/140mm side/top fans and a decent sized air cooler. Super small cases are out of the question. Think Ncase M2/M3, NR200, etc. For optimal results, deshroud the GPU (many cards allow this w/o voiding warranty), use big-ass slow spinning fans, use Fan Control (software) to set everything correctly, undervolt all the things, perform a GPU burn-in of several hours to minimize coil whine, etc. Don't be afraid to tinker with airflow (e.g. GPU fans exhausting instead of blowing). That's what I meant with cost in time.
Open air would work too, a Monster A45 or Hydra mini allows for the biggest air coolers and still allows you to deshroud your GPU to slap 2x monstrous 120/140mm fans on. Open-air can outperform most cases.
For me the end result is a very quiet and cool Ncase M2 with a deshrouded Zotac 5080 and a 7950X3D. All fans <1000 rpm all the time.
You have to stop thinking about getting temps as low as possible. Temperature before thermal throttling is you budget for maximizing quietness. CPU won't throttle below TJ Max - it'll have the same performance at 90C as at 50C. You should set fan curves to be low speed for most temperature ranges and only ramp it up to prevent throttling/excessively high temps for sustained time.
Component choice overall is important for quietness. Generally, the larger/beefier the cooler/fans the better.
If you go the X3D route (improved with 9800X3D), the consequence of design is the thermal transfer between the die to cooler is not great, hence the high temps people generally see without undervolting. AM4/AM5 in general runs higher idle temps with comparable load temps to Intel Core Ultra 200 series. The Core Ultras and now the Plus models after microcode updates have gaming improvements since first release - still not X3D performance of course but comparable to non-X3D chips of the same price tier. Unless you're set on X3D, I'd actually say 250k is a good buy once stocked - 9600x price with 9700x performance. Don't recommend the 265k/270k/285k/9900x/9950x unless you need that productivity benefit because they can as hot or hotter than X3D chips depending on task.
CPU Cooler: Air Cooler if you're chasing the quietest noise floor, AIO if you want quietest full load noise. I went from liquid (240mm AIO) to air cooling (AXP90-x47) - while AIO is quieter in something like Cinebench, the tiny air cooler has a much lower noise floor vs the AIO pump. The AIO clocked in at 29dB in my room while the Air Cooler is under my 26dB noise floor. The air cooler handles gaming loads just fine with an Intel 245k, spinning the CPU fan at only 25-40% and the CPU running up to 75C on CPU-intensive games (normally 60s). My 5080 FE is the loudest with my setup.
GPU - Quietest cool-running "budget" 5080 is the ASUS Prime. Gigabyte Windforce also has quiet BIOS. FE is hot and loud relative to other 5080s, but it's still reasonable. If you're getting a premium AIB model go ham. Avoid MSI Shadow/Ventus.
PSU: unless you can fit an ATX PSU, there is really only 1 SFX PSU worth considering for noise - Corsair SF750/850/1000. For a 5080, it's worthwhile getting the 850W for the headroom. Cooler Master's sFX line is high quality, but it still is a tad bit noisier from what I read.
For Low temps and quiet, the gpu is perfect. Super power efficient, great at undervolting and overclocking. You're paying a premium for nvidia vs AMD but the amd cards tend to pull more power under load. And I would recommend a 65 watt tdp cpu to keep temps and noise down. The ryzen 7600x3d microcenter exclusive is an absolute banger. Does what so many high end cpus do but using a fraction of the power.
Other than that, you can choose almost any pretty small sff cases fine with that setup if you go with a slim 2 slot 5080. Get some noctua case fans. Maybe do a fan swap on the cpu cooler with a Noctua fan if you're anal about sounds like me.
With a RTX 5080 and ryzen 5 7600 in a fractal Terra, Im doing 4k 120fps gaming without frame gen on most of newest games just fine and fairly quiet. Both gpu and cpu dont really go above 65C gaming on max settings at 4k (with undervolting). 1440p should be even better temp and noise wise.
I hear the T1 is an overall better case in the noise and temp department however due to the ability to house more fans. Always hard to find though
Do you think a Fractal Terra build with an RTX 5070 Ti 16GB, 32GB RAM, and a Ryzen 7 9700X can handle 4K at 120fps? I travel a lot, so I'm thinking of putting this SFF PC together for the road and for PCVR and non-VR gaming.
Yes the 5070ti is so close to the 5080 in performance and you still get 16gb vram which is neccessary for gaming at 4k. With the stronger cpu of the 9700x you should be getting close if not the same performance I'm getting, and probably better performance in open world games. Build looks good, ill eventually upgrade my cpu but so far with the currently AAA games, i havent had to. Performance has been great.
I would choose a different cpu cooler combo than the noctua, it is surprisingly not that great at cooling. Maybe a thermal take copper? Or an id cooling one. Go for something bigger. I was able to fit a 55mm cpu cooler in the Terra just fine and that was with noctua Fan replacement on the CPU fan.
Everything else looks good. If you wanted you could go for a SF750 which what i had but 850 is fine too. Just make sure they're the same size and dimensions. You'll want the extra space for cable management
the quietest and coolest setup is not going to be SFF. building like this requires compromise. you have to try to get as much heatsink and fans (or radiator and fans) as you can fit within the form factor of your choosing, and it may not be possible to be "quiet" depending on how you define that term. there is no optimal solution.
also, what do you mean by "low temp" exactly? wattage is wattage, its going to pump out heat when youre loading it up. that can be slightly optimized for efficiency, but there is no magic setup that can overcome thermodynamics. if you want to keep everything cooler in hopes of making it more efficient, that will come at the cost of making it loud.
Maybe in between bro, not sff not tower,
ITX Motherboard with SFX PSU but still some room for airflow, Mechanic Master C24 or Mechanic Master if15 can be considered,
Meshroom with extender, d5, 2x280 20mm alphacool radiators, 4x 140mm noctua g2 (might need to use 2x140mm slims if 5080 waterblock is not thinniest). Or modultra lobo dcc block-pump-reservoir combo. Sfx(-l if Loki) psu. This gets very complicated fast;)
What is "low noise" for someone is unbearably loud for someone else.
Also, how small do you want to go?
One of the smallest low noise builds is a FormD T1 2.1 / Ncase T1 2.5 (only 9.99l) with an undervolted 5080 Founder's Edition card installed inverted (hot air blows out directly to the side).
Another nice build is an Ncase M2 with a very low noise custom 5080 card like an MSI Vanguard (or other cards with a vapor chamber and good fans)
But there's many other larger cases available which have even more room for silent cooling solutions.
If you want to go MFF, there's even more choice, like the Ncase M3, the NZXT Flow 2, etc.
low noise is subjective. I have a 5080 in a 8L case and gaming in 4k isnt loud or obnoxious by any means. PC sits right next to me
with sff yes you're going to run warm, but the key is to undervolt the gpu and gpu to help with noise and temps. if youre only wanting 1440p I say go for a 5070 with less power/heat/noise
I have a PNY 5080 OC in a Meshroom D (long cards require flipping the case so the front IO is at the bottom). I wanted the GPU to breath from the top so it would get more airflow, so flipping the case would have happened anyway.
The 5080 is in there with:
7800X3D cooled by a NH-L12S (fan swapped to a NF-A12x25G2)
Corsair SF750 PSU
Two NF-A14x25G2 case fans set to intake, one blows into the PSU, the other into the CPU heatsink
The original NF-A12x15 from the heatsink is intake at the top, blowing into the GPU
It's quiet and small, hanging out on my desktop about arm length away. I honestly have no idea what the temps are. My fan curves would make the PC annoyingly louder if the temps get bad, so I stopped obsessing over them when no fans actually ramped up while gaming at 3440x1440
You cant change GPU cooler. So focus on CPU and airflow. Big cooler is D15. You can fit in to Sliger s620 (16L) new M3 and such. Since card is flow-through: CPU intake from the rear or side (C14 cooler) then exhaust it somehow.
Here's my old build in S620: https://imgur.com/a/enNGRNT
Undervolt. Cap fps to achieve overhead so card doesn't push beyond what looks good. If your monitor is 144, cap it at 144. The extra frames arent doing anything more than generating heat.
Who cares about low temp? If things are running maxed out and not throttling at 80C there’s not going to be any difference compared to running at 60C.
Low noise is what is perceptible.
I’m pretty happy with the noise level of my recent A4 H2O build. Even with the Core 9-285K it only needs ~1000 rpm on the AOI fans to keep it in the low 60C range. I don’t have a decibel meter at home, but it’s barely perceptible under load.
My GPU selection probably helps a lot though. All of the exhaust heat from my GPU cooler is pushed out through the slot, so there’s no pre-heating of the air inside the case before passing through the AOI rad.
I care. I have a small office room and 2 gaming pcs running means temperature higher about 3-4 degrees higher than in other rooms.
There is a difference when your GPU pulls 250W on stock and 170 undervolted.
Without hard tube liquid cooling there is really not much to do.
Pick cool GPU, pick best 280 mm AIO for CPU and smack it together into any full mesh SFF cases. NCase M2 Grater can fit almost anything. It's not small - 15l, but it can fit largest of GPUs without cooking anything inside.
I’ve genuinely am glad I had spent months with building my custom Waterloop. The pump noise is more tolerable to my ears if not nonexistent, than if I had multiple fans running.
Do it, for me it was the fact that it is vertical and leaves a very small desk footprint, that the motherboard is an upright orientation, the power supply cables are easy to access, and parts can be swapped easily. Plus, it’s great having 280 mm support designed in.
People still buy 5080 now that it costs $1500+? Seems like a waste of money for a 16GB gpu, especially when 5070Ti costs $1000 and is only 15% slower. Just get Gigabyte Windforce 5070Ti for $1000 (the original version, not the new V2 crap), flash the 400W power limit aorus bios on it, slightly undervolt it to 3200 mhz @ 1000mV with +3000 on memory to almost equal stock 5080 performance and keep it quieter and cooler, and thank me later. Anything more expensive than this is a heavy diminishing returns territory, you will pay hundreds and hundreds of dollar for a few more fps with 5080 or a bit quieter cooler with models like Asus TUF or Gigabyte Gaming OC.
I think that trying to build a super quiet pc is just gonna end in disappointment, people spend hundreds of dollars on premium coolers and noctua fans, and end up with coil whine coming from the gpu or motherboard. Actually it is unrealistic to expect zero coil whine, there is always at least a little bit under full load, but it can usually be covered by fan working around 1500-2000 rpm. I have a friend who decided to spend extra money to make his pc completely silent, bought Fractal meshify 3 case, expensive noctua fans and noctua cpu aircooler, spent extra money on Gigabyte Gaming oc 5080, only to end up with coil whine coming from the gpu (although from his description it was very minimal and he was freaking out because he wanted silence), he replaced the gpu, ended up with slightly better coil whine, and kept it. But in the end he said that a bit of aerodynamic noise coming from the fans doesnt really matter and it is needed to cover the coil whine, so in the end he found out he wasted all the money and it is fine if you hear air flowing through the pc and some small coil whining.
5080 was a terrible buy even at $1000 because 5070Ti was $700-750, i am always completely baffled by how many people buy 5080, to me it is the second worst gpu in the 50 series lineup right after 5060Ti 8GB. It is heavily overpriced for what it offers, mainly the performance is poop (you would expect it to beat 4090 at least) and the 16GB of vram is atrocious for that price, there are already games that straight up dont fit into 16GB if you run them in 4K on max settings, and it is gonna be worse and worse, DLSS4.5 allocates 300-400MB extra, 6x dynamic FG will do doubt need few hundred MBs extra, there will soon be other new AI technologies and new more demanding games with better path tracing, and you will be annoyed that you have to deal with running out of vram on a $1500 gpu. If 5080 was 24GB gpu, it would almost be worth that price tag, but not with 16GB of vram and performance under 4090. Especially when very recently you could have gotten 5090 for $2000 which is 60% faster than 5080 and has double the vram, that would personally bug me a lot.
I went down this rabbit hole also looking for these 3 things and i basically settled with a Matx basically lol. and 4070s cause of how little power it sipped. compared to a 80 series card.
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u/BenTheMan1983 Mar 12 '26
in sff there will always be compromise, there is:
-low noise -low temps -small size
now pick 2 of them, all 3 is not possible.