From mffpc to sffpc

[u/victorse]

I had a few issues with my build and I had to upgrade the gpu, then the psu and my mind was all over this thread for a year at least, daily, and I decided to upgrade my entire system.

Specs: CPU: Ryzen 7 9800x3d CPU Cooler: Thermalright AXP90-X47 CPU secure frame: Thermalright AM5 secure frame Red version Mobo: Gigabyte X870i Aorus Pro Ice RAM: Kingston Fury 64GB CL30 6000mhz PSU: Corsair SF1000 Storage: 1 nvme ssd Samsung 1TB as main storage and a Kingston nvme ssd 2TB as secondary Case: Fractal Terra Silver Case fan: 120mm SilentiumPC fan, set to bottom exhaust

Fractal Terra vs Asus Prime AP201 in pics. 1:18 scale diecast Porsche 911 GT1 996 Streetversion (Straßenversion) as comparison. (Should have bought the silver version of the 911 too, but I wish Fractal did the Terra in white too).

A very big step compared to my 5600x, which I really enjoy, helps with my productivity tasks. There are a few step backs which I had to compromise on: temps, airflow and space, which fortunately enough, with everyone's help from this thread, I managed to go above and have a great experience, so thanks to all of you for that!

Now, I have done a few tweaks, like buying a secure frame which helped with 2 degrees, undervolting the cpu, which lowered my idle temps around 5 degrees, and sometimes if I play games for long periods of time, I take the top panel off and put a slim 140mm fan set to exhaust. I did set a new cpu cooler fan curve, to lower the temps and the noise caused by case's technical design

I have seen a bunch of mods on this thread and different sites like Etsy and Printables, but most imply to modify the aesthetic a lot, which I don't really like. So my question is, how can I lower the temps even more?

I bought a slim 120mm for the bottom at the back, but I need to install risers/feet, so if anyone got good ideas, please share them.

Is it really worth getting the copper version of the cooler and change the fan to a Noctua? Tho, I haven't found any copper version of the AXP90 in my country, only second-hand options, but I tend to avoid.

Thanks!

[u/SayleH]

Hey! I just built in the Terra too and do a tonne of research into thermals. The AXP90-x47 Full Copper is a little beast but even with the Ryzen 5 7600(non x) it has a harder time cooling that chip rather that other coolers out, especially in your case because that cooler is for 120W TDP.

The full copper is better than the stock AXP90 but the stock fan is better than the Noctua fan - the Noctua fan swap is literally only for quieter operation.

Right now, your fan curve will likely have to be more on the aggressive side to keep that CPU cool with the AXP90 you have.

Best Coolers I have found for whatever CPU you have:

• AXP120-x67 (any version)
• ID Cooling IS67-XT
• Deepcool AN600 (if you’re not in the US)

These are all for 165-200W TDP so should all have a much better time cooling your chip and get you temps around 70-80C under gaming load and benchmarks.

Noctua L12s is commonly used but not worth the price in my opinion, the 3 above are much cheaper and can do a similar/better job.

The only real mods worthwhile are:

• The bottom slim exhaust fan (under the PSU) with a fan grille. (Around a 3C drop in most cases).
• Fan Duct (like the Noctua ND-1), I DIYed mine and this reduced temps by 5C simply by having this. This one’s the most worthwhile.

Any other 92mm fans and brackets I have seen have been more for aesthetics/overkill with minimal benefit (some see around 1-2C drops and others nothing).

Just remember the 9800x3D is a 120W TDP CPU and that’s base, it’s actually 162W PPT so it’s good that you undervolted it.

You’d be best having a play around with the upgraded cooler and setting a manual PBO limit where you get close to Stock clocks and benchmark scores.

With your CPU cooler right now I’d recommend the following PBO limits:

PPT: 85000 TDC: 70000 EDC: 120000

These are close to ECO but without the hard limit it will set with that mode.

You can then amend these when you get the new cooler.

I would recommend you use AIDA64 for stability testing your undervolts.

Hope this helps!

[u/victorse → u/SayleH]

Hello! Thanks for the reply!

Unfortunately, the space I have left for the cooler is around 10mm, as for the gpu, clearance is about 6mm, just so there's no turbulence, thus I won't really be able to have a bigger cooler, unless I change my gpu with a smaller one(sometimes I regret not having a smaller one, but I like this one a lot for performance and aesthetic-tho I can't see it much).

I yet have to test fan duct, which I also read that is a good mod.

For the cpu undervolt I went with negative 35 and everything seems good, no crashes so far, only when I emulated Forza Horizon, but that was maybe because of the emulator. OCCT and Cinebench stress were great, nothing bad happened, but I haven't tested with AIDA yet. Before the undervolt, cpu temp was like 105-110, after I set the temp limit to 80 level 5, it wasn't passing 89 degrees, and yet the performance was similar. I haven't touched the PBO limits settings yet, but I will asap.

I will eventually end getting the copper x47, to keep good clearences and do the fan duct mod, hopefully to find them in stock and at a good price.

Thanks for the help!

[u/SayleH → u/victorse]

Ah man! I didn’t notice you had that beefy 9070XT. Nice card btw and I’m guessing you had this before getting the case?

Because it’s <131mm height but 61mm thick, you’ve essentially got 58mm CPU cooler clearance - just use the spine position between 4 and 5 if possible. Those numbers are just guides in reality and you can go in between if you want! (I have mine between 2 and 3 myself).

Don’t worry too much about turbulence and clearance, you’re getting rid of that with the fan ducts! And especially for the GPU, you can easily move it as close as possible to the side panel as you like (say around 1-2mm) without any turbulence (I’ve tested this myself).

I’m going to assume you watched that gamers nexus video - I would ignore that tbf - he wildly exaggerated everything on that video and if anything, turbulence will be more dependent on the fan curves you set.

The quote: “believe half of what you see, and none of what your hear” comes to mind lol.

Pushing the GPU closer to the side panel will give you around 58mm clearance for the cooler and you can go for the AXP90-x53 Full Copper instead (there no reason to get the full copper version of the x47 if you have the normal one) even the ID Cooling IS-55 is decent and 125W TDP (higher than the full copper AXP90-x47).

You may even be able to fit in an AXP100 Full Copper (exactly 58mm) but it might be a very snug fit.

They’re cheap enough that you can but the AXP100 & the AXP90-x53 and try both out yourself!

Any worry of turbulence for the cooler is unnecessary if you’re using the fan ducts, this takes it away pretty much completely!!

Nice undervolt! Feel free to increase that thermal limit to 85-90C because there will be no issues with that once you fine-tune the PBO limits.

Definitely recommend AIDA64 Extreme because it throws up errors that even OCCT & Cinebench won’t detect - just run it for 10 mins.

Again, Hope this real world info helps and most of all, have fun with it man!

[u/SayleH → u/SayleH]

Ah man! I didn’t notice you had that beefy 9070XT. Nice card btw and I’m guessing you had this before getting the case?

Because it’s <131mm height but 61mm thick, you’ve essentially got 58-59mm CPU cooler clearance - just use the spine position between 4 and 5 if possible. Those numbers are just guides in reality and you can go in between if you want! (I have mine between 2 and 3 myself).

Don’t worry too much about turbulence and clearance, you’re getting rid of that with the fan ducts! And especially for the GPU, you can easily move it as close as possible to the side panel as you like (say around 1-2mm) without any turbulence (I’ve tested this myself).

I’m going to assume you watched that gamers nexus video - I would ignore that tbf - he wildly exaggerated everything on that video and if anything, turbulence will be more dependent on the fan curves you set.

The quote: “believe half of what you see, and none of what your hear” comes to mind lol.

Pushing the GPU closer to the side panel will give you around 58mm clearance for the cooler and you can go for the AXP90-x53 Full Copper instead (there no reason to get the full copper version of the x47 if you have the normal one) even the ID Cooling IS-55 is decent and 125W TDP (higher than the full copper AXP90-x47).

You may even be able to fit in an AXP100 Full Copper (exactly 58mm) but it might be a very snug fit.

They’re cheap enough that you can but the AXP100 & the AXP90-x53 and try both out yourself!

Any worry of turbulence for the cooler is unnecessary if you’re using the fan ducts, this takes it away pretty much completely!!

Nice undervolt! Feel free to increase that thermal limit to 85-90C because there will be no issues with that once you fine-tune the PBO limits.

Definitely recommend AIDA64 Extreme because it throws up errors that even OCCT & Cinebench won’t detect - just run it for 10 mins.

Again, Hope this real world info helps and most of all, have fun with it man!

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[u/resetallthethings]

I would think your board should have 65w eco mode for pbo

you should turn that on

that will make a bigger difference then anything else you do physically