RTX A2000 "KalmX Edition" - probably the fastest SFF friendly passive cooled GPU to date

REVOCCASES

Shrink Ray Wielder
Original poster
REVOCCASES
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Apr 2, 2020
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It's been a while since PALIT released their passive cooled GTX 1650 KalmX and I haven't seen anything comparable with "next gen" performance. Of course you could put an RTX 3080 in a MONSTERLABO, HDPLEX or TUREMETAL case but if you prefer to have a standalone, passive cooled GPU for your custom build there aren't many options...

long story short, here is my DIY solution to turn the RTX A2000 into a passive cooled "KalmX Edition"

Specs:
  • GPU: RTX A2000 6GB
  • Cooler: ACCELERO S1 R2 & CNC machined copper plate
  • Dimensions: ca. 2 Slots, 135mm height, 220mm long
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performing the mod:

20230414_113617.jpg

besides the A2K and the ACCELERO S1 cooler, we need a 3mm copper plate for mounting and covering the VRAM...

20230414_130933.jpg

the copper plate will be soldered with 138C solder paste to the heat sink...

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I am using a small, cheap "Pizza Oven" for this job and controlling the temperature via a temp probe... the process is a little bit tricky because if you heat it up too much, the heatpipes will come loose from the cooler itself...

20230414_160133.jpg

as soon as the solder paste melts you're good and can stop the oven...

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last but not least I painted the modded heatsink with some temperature resistant spray paint...

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mounted to the A2K with two M2.5x8mm screws and done...

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next up, some benchmarks...
 

REVOCCASES

Shrink Ray Wielder
Original poster
REVOCCASES
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Apr 2, 2020
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now let's see how it performs...

stock settings, horizontal fin orientation:

Screenshot 2023-04-15 121439.jpg

stock settings, vertical fin orientation:

Screenshot 2023-04-15 131535.jpg

custom V/C curve, horizontal fin orientation:

Screenshot 2023-04-15 123051.jpg

custom V/C curve, vertical fin orientation:

Screenshot 2023-04-15 130247.jpg

Benchmark results, custom V/C curve, vertical fin orientation:

Screenshot 2023-04-15 130851.jpg

summarizing: it works great! even at stock settings it does not throttle and performs just as good as with the noisy stock cooler. For best (passive-) cooling and performance however, it would be ideal to place the GPU in a traditional layout case to support natural airflow trough the fins and adjust the V/C curve in afterburner to something like 1500 Mhz @ 750mV
 
Last edited:

msystems

King of Cable Management
Apr 28, 2017
798
1,399
Amazing work fabricating your own base plate and figuring how to solder it! Looks very clean and no harm to the original heatpipes.
 
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REVOCCASES

Shrink Ray Wielder
Original poster
REVOCCASES
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Apr 2, 2020
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www.revoccases.com

r_san

Case Bender
New User
Jan 15, 2023
2
0
What a great idea, I just bought a accelero S2 to glue on my quadro p620, hopefully it will be easy to adapt
 

r_san

Case Bender
New User
Jan 15, 2023
2
0
What a great idea, I just bought a accelero S2 to glue on my quadro p620, hopefully it will be easy to adapt
 

REVOCCASES

Shrink Ray Wielder
Original poster
REVOCCASES
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Apr 2, 2020
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www.revoccases.com
upon request I've attached the coldplate DXF file for CNC machining/laser cutting... SendCutSend website quoted USD 35,- including tapping 2x M2.5 and deburring...
 

Attachments

  • A2000DS_CU_Coldplate.zip
    4 KB · Views: 53
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BikingViking11

SFF Lingo Aficionado
Feb 10, 2019
93
167
My streaming PC is entirely fanless...minus the GPU. I'm currently using a GTX 1650 with plans to add a passive cooler to it. Well, that was until I became aware of the A2000. 20W less TDP and reportedly up to 80% more muscle...thanks for this thread.
 

Kroel

Minimal Tinkerer
New User
Feb 3, 2023
4
1
This is what i want!
Already found an Accelero S1 and looking to have a copper plate machined for me.
I was just thinking. Why not drill a few extra holes in de copper plate and attach the Accelero using screws and some regular thermal paste?
 
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REVOCCASES

Shrink Ray Wielder
Original poster
REVOCCASES
Silver Supporter
Apr 2, 2020
2,083
3,363
www.revoccases.com
Why not drill a few extra holes in de copper plate and attach the Accelero using screws and some regular thermal paste?

You can try if you don't like to use solder paste, but cooling performance will be worse because solder has way better thermal conductivity...
 

P.P.A

Case Bender
New User
Jul 31, 2023
2
1
Thank you @REVOCCASES for creating this mod & releasing the DXF file for it. I'm looking to replicate it with an Accelero S2 (although, comparing it to the S1 in the photo, now I'm not sure that the two less heatpipes are going to cut it). Since SendCutSend don't appear to ship to Germany, can you recommend similar services that do?
(Alternatively, if you're willing to sell this prototype, I'd be very much interested.)