Cooling of T5820 with RTX 3090

Question

Hi all.

I recently bought a 5820 with an RTX 3090, and the graphics card seems very hot and noisy. In FurMark, the video card fans accelerate to 100% in a matter of minutes, about 4100 rpm, making an extremely annoying noise. It's the same in games.

First of all, how can I add additional fans to the T5820 case? All I found was a single 5-pin HDD fan connector on top of the CPU socket. And there is no fan mount on the back panel.

Another question - the case has a pair of fans for the RAM and CPU, and in idle mode, one of them (the top one) is always running at 1600rpm, making noise, and the other is running at 1000rpm, is that the intention?

And maybe any tips on how to make the system quieter and cooler?

Translated with www.DeepL.com/Translator (free version)

Flavius Aetius · Accepted Answer

Hi,

I have one precision T5820 and i added the EVGA RTX3090 ULTRA FTW3... In full load my graphics card temperature is +-72ºc (with the case closed)... but the way to get this temperature and performance was,very, very complicated... i replaced all my original fans by noctua Fans... i added 2 fans in the back of my system (like precision T7820) and i added a extra fan (Noctua 90 mm) below of the graphics card.

But you will need to buy the Fan adaptor (Dell 5 pin to standard 4 pin), fan splits adapter and build manually the adapter from Dell 4 pin to Standard 4 pins, because the motherboard have fans entrance with 5 and 4 pins and the Dell pins sequence for fans is different from the standard pins...

I could send the images from my system, but i dont know how to attach here...

Flavius Aetius · Answer

The products i used...

5x https://www.waz.com.br/ventoinha-cooler-9cm-noctua-nf-a9x14-hs-pwm-ch-bk-s-120229-html/p
1x https://www.waz.com.br/ventoinha-cooler-12cm-noctua-nf-a12x25-pwm-116427-html/p
2x https://pt.aliexpress.com/item/1005002711227471.html?spm=a2g0o.productlist.0.0.3855c01eYARLY2&algo_pvid=933d46fd-cd66-4ccf-a433-9e5612b60490&algo_exp_id=933d46fd-cd66-4ccf-a433-9e5612b60490-25&pdp_ext_f=%7B%22sku_id%22%3A%2212000021813135768%22%7D
4x https://pt.aliexpress.com/item/32924291716.html?spm=a2g0s.9042311.0.0.331cb90aVH3dMd
1x https://www.ebay.com/itm/163782743882?_trkparms=ispr%3D1&hash=item262236574a:g:RqgAAOSwPdNdMP3Z&amdata=enc%3AAQAGAAACoPYe5NmHp%252B2JMhMi7yxGiTJkPrKr5t53CooMSQt2orsSLY2M1Gjmuwt9c03vWNfiRie3BJ4pygnRdX4VvTlfxGrbz2JM8%252BpeiwBCdPTWEFUQj%252BTodX8L7FLjF7iSXufO5BORHAXR%252FKBpkFgPJXj825nSj0OOAP60wyKqjBCAy9o13%252BfcCci8QqZK6U07VrzxP4swxbvW%252BMmzE%252BcpaZM43r4yyrkmiXxzd8y49lSaHxJfyVPvjijjlSgs2ZgIrHlT4ekJiNg0OD%252Fg4i3PNMjWmx6MDIVa7y%252FeOPonX5z7Ioo6C19jWYE3mk59sXyOhuzX242V4jtqDsZRNPyrIHnfvvMFfYXqgkNfb7qGotPeD0cGP9YuihYmfUnNxQI4xsXfeQ1UYVElh0rGBdGtBN1YGZpMVzAwYYLvFrmQ8XZQKAvO3bfw7LH%252FzY5bhiSixSVdcOmEkD4z6h%252B4OelE66%252BlgilWHmrOlIueHxiBmEPw5bBHeppYVJ0IDFeTUg7EqcBfWXT%252BIVkVZnh0PCBsKUHSw28Jus7l5PeutO%252FiRqL879ahsv7ltfGn2BIUcp%252FFIOZO90yukMnjW%252BucbzgZX7K8QeoCTW2UhKRbbeAchQFTTzODiMZLayCQaG43oQWapksUK9jesKxhFKxOfJSIZr%252FkPKflNM49IQIAo5KGTQG7%252BZLybrBz%252BBhjrvBuZ%252B2D%252BfzrBw8iClcfwvPi8Et%252BDJ1PUGyKGF%252BzsEm%252BjCK0GTMoEvDWwiJAb3W03T9uKmyCrM4Vf8y14DwzkfjDtIamMK5um7TgP98wwx%252BRuLpgXM7nppnzxIz4tOSOA7WOg8TcutlTs69CSLahzbj9hu54yECOI8s%252BdJ4UFQQLap2bcBMyQpU7d4UGAKgRSHYHJnrPUugA9g%253D%253D%7Cclp%3A2334524%7Ctkp%3ABFBM3u-s05hf

The last one i bought because of the frame (i replaced the fans by noctua fans and put the frame in my system, like the 7820).

Flavius Aetius · Answer

Hi, I sent a e-mail to you... Then, after i've changed my fans, i changed in Bios options (F2 when start), Menu Thermal Config. PCie ZONE 10% and Processor Zone 20% and all it is ok and working fine!

Flavius Aetius · Answer

You can converter the adapter 5pin (dell) to 4pin (standard) to another 4 pin (dell) to 4 pin (standard), removing the 5pin connector and switching this one by one 4 pin connector who you will remove from original dell fan (who will be replaced by noctua fan). You will convert the aliexpress adapter 5pin to 4pin to another 4pin to 4 pin only switching the 5 pin connector by another 4 pin connector (from the removed fan).
It is because the motherboard have two 5 pin connector (HDD FAN and CPU Fan) and another three 4 pin connector (2 from Memory Fans and another from frontal fan).
The HDD Fan plug i am using with the Y splitter to 2 memory fans...
The originally memory fans plug i am using the each onefor each back fans (2 fans)...
The another 4pin plug entrance i am using to my extra noctua fan (and you can split with Y and use with the frontan 120mm fan).
In my case the 4pin plug entrance is used only to the extra fan who i put under the graphics card.
The 120 mm fans i connected directly to my graphics card (its have another fan plug exit).

nxsofsys · Answer

Big thank you, it  cool stuff to start for me. Btw, is memory fans (you used their connectors for rear fans) have different RPM?

DELL-Cares · Answer

Hello, I see you are looking for technical assistance. If you need our help, you can start a private message with us and we will be happy to assist you.

maskyong · Answer

Hi, I have a precision T5820. I am also trying to make the same configuration as yours.  Would it be possible for me to have your system images?

strikerr · Answer

Hello @Flavius Aetius, I am also doing a similar build and I am struggling to keep temps reasonable when case is closed. I know that it has been a long time, but if you still have your system or a photo of the setup it would great if you could share it. Thanks :) ​

Precision Fixed Workstations

Cooling of T5820 with RTX 3090

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