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user_07f487
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January 3rd, 2026 10:04
Optiplex Fan Control
I Recently got given a OptiPlex 7020 SFF with a i5 14500 and 16gb ram, and i also bought a 3050 low profile to use in it, now it was all working ok but with the side panel off, it would go to 80+ degrees and i bought a cooler master fan (80mm 4pin) and plugged it in to the FREE SYS_FAN header, but its running at like the bare minimum speed and its not helping temps with either intake or exhaust, is there any way possible to up the speed or no?
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Posted January 3rd, 2026 13:28
@redxps630 tried speed fan fans sysfan and there is literally no app that allows to change it but it detects it
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Posted January 3rd, 2026 13:31
Try Fancontrol
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Posted January 3rd, 2026 13:33
@redxps630 tried and itonly detects it, when i try to calibrate it fails
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Posted January 3rd, 2026 13:34
@redxps630 speedfan does the same
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Posted January 3rd, 2026 13:36
If neither tool alters sys fan speed, try sata to fan converter
https://www.amazon.com/CRJ-4-Pin-Sleeved-Power-Adapter/dp/B0711CR7H
or try low profile add in fan card in a pciex1 slot of 7020SFF.
Can you upload a pic of low profile rtx3050 in 7020? Why do you keep side panel off?
(edited)
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Posted January 3rd, 2026 13:39
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Posted January 3rd, 2026 13:49
If it is 7020 SFF the motherboard is
Motherboards / System Boards PWA, PLN, SFF, L, TRPM, 7020 CXR46 PWA, PLN, SFF, L, TRPM, 7020, FMX MC6K7 (edited)
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Posted January 3rd, 2026 14:03
OP seems to install a double slot width rtx 3050. I cannot see how that is possible to have psu inside case too? The pciex16 slot is one slot width from psu
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Posted January 3rd, 2026 14:08
I think OP probably has a 7020 plus SFF which has an open ended PCIex4 slot to install a double slot width rtx 3050
redxps630
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16317 Posts
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Posted January 3rd, 2026 13:27
I think some user tried similar experiment before on older Optiplex and the spare sys fan header was not providing good fan pwm to be acceptable. There is no bios control to change that but you could try Fancontrol or speedfan which are third party tool to increase fan header pwm.
(edited)