Completed Enhance ENP-8345L - Modular Flex ATX 450W Platinum

[REVOCCASES]

I'll keep it in mind when I get into a more proper case, so far it works, but yeah, I'll try to zip-tie it another way or even, drop them, later on.

On another note, the Noctua NF-A4x20 fan isn't strong enough to cool ~200W in summer (~36C degrees room temp), for the speed/noise I was hoping. The PSU kept shutting off on me at ~3500RPM, it even shut off once for me at ~5000RPM

I'm gonna swap the stock fan back in once the internal temp at PSU intake gets back to 48C, when another really hot day comes, to see how much it spins/how loud it gets

you could try using the Noctua as intake and see if it helps

 

[Dogzilla]

you could try using the Noctua as intake and see if it helps

I might give it a shot, though I'm worried about the resonant noise, once flipped, due to the PSU grill, and I don't wanna cut the grill or anything just in case I do end up reselling the unit

 

[Overtek]

I'll keep it in mind when I get into a more proper case, so far it works, but yeah, I'll try to zip-tie it another way or even, drop them, later on.

On another note, the Noctua NF-A4x20 fan isn't strong enough to cool ~200W in summer (~36C degrees room temp), for the speed/noise I was hoping. The PSU kept shutting off on me at ~3500RPM, it even shut off once for me at ~5000RPM

I'm gonna swap the stock fan back in once the internal temp at PSU intake gets back to 48C, when another really hot day comes, to see how much it spins/how loud it gets

That's a hot old ambient room temp.

With the Yate Loon the PSU is fully load tested in 40C room temp.
If you need more then the Delta fan will do to 50C which is what we normally push towards for industrial or server racks when noise is less of a key

 

[Dogzilla]

That's a hot old ambient room temp.

With the Yate Loon the PSU is fully load tested in 40C room temp.

Swapped back to the stock Yate Loon fan, ran tests again, Dragon's Dogma 2 demo, Furmark 2 + Cinebench loop, rock stable, except the Yate Loon fan goes to like 6000-7000 RPM or similar.

It's def fine, it works fine, room temp is not exceeding 40C ambient, but the temp inside the case at PSU intake is 49-50C

 

[Dogzilla]

Also, to be fair this doesn't really apply to most people, most people would

1. run an air conditioner, not get room temp to 34-36C
2. have nice expensive well-ventilated cases, not cheap Sama IM01 clones
3. use case fans (or have direct airflow to components in <7L)
4. don't have the PSU intake from inside
5. don't intentionally make the CPU+GPU cooling anemic
6. don't carefully create perfectly horribly placed hot pockets inside the case

and well just in general, don't make it as worst-case scenario as humanly possible

 

[Overtek]

Also, to be fair this doesn't really apply to most people, most people would

1. run an air conditioner, not get room temp to 34-36C
2. have nice expensive well-ventilated cases, not cheap Sama IM01 clones
3. use case fans (or have direct airflow to components in <7L)
4. don't have the PSU intake from inside
5. don't intentionally make the CPU+GPU cooling anemic
6. don't carefully create perfectly horribly placed hot pockets inside the case

and well just in general, don't make it as worst-case scenario as humanly possible

Remind me of your order number. For enduring that temp indoors I think we should send you one of the few hundred delta fans we have on hand.

PSU now also freely available from Amazon US. https://a.co/d/0eaj8UML

 

[Dogzilla]

Remind me of your order number. For enduring that temp indoors I think we should send you one of the few hundred delta fans we have on hand.

PSU now also freely available from Amazon US. https://a.co/d/0eaj8UML

Thank you for the offer, but I'll have to kindly refuse, I don't wanna put you out. At the end of the day low noise quality, and lack of specific low and high-frequency noises that only show on frequency spectrum analysis, and get missed by usual raw dBA noise testing are my top priority.

What I'm really trying to do is get the quietest possible system that doesn't have heat/temperature issues for the few weeks in summer (which has already been a decade long endeavour deep-diving through >120mm fans, and likely gonna keep me busy for at least half decade deep-diving into slim <120mm fans now )

I have very sensitive hearing, and bad experience with industrial fans of all types and sizes (they don't come with advanced noise optimizations, like Noctua fans do, and be quiet! to a lesser extent, nor even regular optimizations like some others do).

There's a very high probability the Delta will just not sound good enough to me at ~3000 RPM range, and again I did this testing just to double-check the worst-case scenario, and also experiment for fun. I'm still hopeful a better-ventilated case, and a better-positioned FlexATX PSU might stop the PSUs OTP from triggering.

+ I can always temporarily run the Noctua NF-A4x20 at max speed, or not play demanding games while the heatwave lasts.

And if not there's always 7660B platform, to see if it's more robust with a ~2800-3400RPM spinning Noctua A4x20 or a similarly sounding fan for a bit different speed

For instance I'm waiting for a few of the new Deepcool FT9 Slim to arrive from China, to test if they're good enough at low noise levels and if turbulent noise isn't an issue when close to a panel, to decide if I can aggressively downsize to lets say Densium 4 V2, as just getting a Densium first to play around with is a bit too expensive for me to do at the same time as evaluating SFF PSUs, and Im not sure if the industry has caught up to my needs yet (no LCP slim fans yet, or advanced next-gen designs, though the Thermalright slim 120mm with rings around the blade shown on Computex looks promising!)

So again thank you, and pls don't misunderstand, I've refused free stuff often in the past If there's a high chance it's gonna sit around unused, I appreciate the awesome after-sale support, it definitely goes a long way to build brand mindshare!

 

[Overtek]

Thank you for the offer, but I'll have to kindly refuse, I don't wanna put you out. At the end of the day low noise quality, and lack of specific low and high-frequency noises that only show on frequency spectrum analysis, and get missed by usual raw dBA noise testing are my top priority.

What I'm really trying to do is get the quietest possible system that doesn't have heat/temperature issues for the few weeks in summer (which has already been a decade long endeavour deep-diving through >120mm fans, and likely gonna keep me busy for at least half decade deep-diving into slim <120mm fans now )

I have very sensitive hearing, and bad experience with industrial fans of all types and sizes (they don't come with advanced noise optimizations, like Noctua fans do, and be quiet! to a lesser extent, nor even regular optimizations like some others do).

There's a very high probability the Delta will just not sound good enough to me at ~3000 RPM range, and again I did this testing just to double-check the worst-case scenario, and also experiment for fun. I'm still hopeful a better-ventilated case, and a better-positioned FlexATX PSU might stop the PSUs OTP from triggering.

+ I can always temporarily run the Noctua NF-A4x20 at max speed, or not play demanding games while the heatwave lasts.

And if not there's always 7660B platform, to see if it's more robust with a ~2800-3400RPM spinning Noctua A4x20 or a similarly sounding fan for a bit different speed

For instance I'm waiting for a few of the new Deepcool FT9 Slim to arrive from China, to test if they're good enough at low noise levels and if turbulent noise isn't an issue when close to a panel, to decide if I can aggressively downsize to lets say Densium 4 V2, as just getting a Densium first to play around with is a bit too expensive for me to do at the same time as evaluating SFF PSUs, and Im not sure if the industry has caught up to my needs yet (no LCP slim fans yet, or advanced next-gen designs, though the Thermalright slim 120mm with rings around the blade shown on Computex looks promising!)

So again thank you, and pls don't misunderstand, I've refused free stuff often in the past If there's a high chance it's gonna sit around unused, I appreciate the awesome after-sale support, it definitely goes a long way to build brand mindshare!

No problem, just let us know if you change your mind.

It's interesting you have the same concept as we do in that dBA measurements in a chamber offer little compared to knowing what is essentially an accoustic signature where a nice smooth clean sine wave would probable be most desriable

 

[Dogzilla]

No problem, just let us know if you change your mind.

Unless, you maybe wanted to check out how the Deltas sound to my ears, at idle, lower speeds + power consumption, especially considering I seem to have gotten a really good Yate Loon sample ?

Because I remember you mentioned on a discord server, that you were possibly looking to go with different fans and were testing Sunon and Delta, with the Delta possibly having less capability than Yate Loon on max 450W, after some preliminary testing

It's interesting you have the same concept as we do in that dBA measurements in a chamber offer little compared to knowing what is essentially an accoustic signature where a nice smooth clean sine wave would probable be most desriable

Yup, dBA measurements have their limitations, heck even dBZ, or other ones part of more advanced/demanding ISO/ITU-R/IEC standards, that Aris from Cybenetics/HWBusters has been trying out have limitations, are hard to use (he's having sensitivity issues with dBZ)

For example, jonnyGURU, the chief R&D officer for Corsair, always mentions just doing the usual ISO standard from 1m isn't enough, they test their PSUs, for coil whine, harmonic resonance, vibrations etc, from only 10cm away, and with a mic setup optimized for frequency plotting, only doing frequency plotting*

A Slovakian review magazine/site HWcooling are the only ones that I've seen that do noise spectrum frequency analysis, and good one at that (they use a vibrational meter to separate sources of noise), and they match weird noise issues to their respective frequency peaks. And well GamersNexus has been getting tutored by Mike Chin, and have released some frequency plots

 

[Overtek]

opps I said Delta, I meant ADDA.

Delta is another fan that I've done some testing with but not quiet happy with the thermals. Full range wise it would be the best acoustic signature, because its a sleeve bearing, but very unusually its a 60 or 70k hours sleave bearing. normally sleeve is just 20-30k, not really appropriate for a psu's.

The Sunon is a different audio sig. and maybe a little nicer.

I mean the fact is you're never going to get quiet because you need 8-9k rpm at the top end for 40mm to provide enough cooling in flex atx. The only time you could really is if you under rate a high efficiency psu.

 

[Dogzilla]

opps I said Delta, I meant ADDA.

Ah, ADDA, even less of a point then, I doubt it's gonna be much different than a good sample Yate Loon, just better QC, less chance of weird noise problems,

If you aren't sending already, sending an ADDA to L91, Caselabs . org, for him to add the recording to his review would make more sense, as people on discords and reddit and forums already go to check out information about the 8435L there, and not just SFF enthusiasts, new buyers from the west visiting social networks, I stumbled upon Koreans discussing it in the forums too:

3070에 8345L은 좀 아닌가 - SFF 마이너 갤러리

https://www.caselabs.org/psu/enp-8345l 쿨러가 Yate Loon D40BM-12C 이거라는데 베어링 소리가 좀 거슬린다 이런 얘기도 있고 과연 쿨러 풀발 했을때 소음을 견딜 수 있을지도

gall.dcinside.com

Full range wise it would be the best acoustic signature, because its a sleeve bearing, but very unusually its a 60 or 70k hours sleave bearing. normally sleeve is just 20-30k, not really appropriate for a psu's.

It's possible it's a decent rifle bearing, but yeah, at the end of the day too risky, without knowing exactly how it looks inside, and if Delta's testing includes the fan oriented horizontally

I mean the fact is you're never going to get quiet because you need 8-9k rpm at the top end for 40mm to provide enough cooling in flex atx. The only time you could really is if you under rate a high efficiency psu.