XPS 8930, T57JF Heatsink force full, connect sensor stop BIOS error

What would happen if you disconnected the 4th pin which if for PWM?

Would it just be running at 12volt and be able to sense the speed?

Well, It's interesting.

Both of the fans (cpu and upper) were standard wiring colors (blue is PWM which controls fan speed).

I used a small screw driver and bent the clip in the plug and pulled the blue wire out.

Both run at full speed all the time.

The stock CPU fan at full speed is hands down the loudest cpu fan I can ever remember (but my room is already loud so I don't notice it)

The case fan exhausts a TON of air.

Idle temps are around 80F/25C

I ran a benchmark and at 100% the hottest any cor got was 144F/63C

That doesn't seem unreasonable to me.

@bbsux4evr  That doesn't seem unreasonable to me.

It is not unreasonable for a CPU @ 65 watt TDP.

Once you get the new blower style fan/heatsink installed, the CPU blower fan will not need to run at 100%, as long as you have a 120mm top exhaust fan. If you do not have a 120mm top exhaust fan, you should make that upgrade at the same time as your blower style fan/heatsink install. Be sure to have thermal paste on hand.

Oh the temp Readings were done with core temp

@bbsux4evr   What would happen if you disconnected the 4th pin which if for PWM?

That would turn it into a 3-pin fan . . . and 3-pin fans do not throw the BIOS start-up error.

I’ve got the fan on order. Should I use it as a 3 pin and the cpu fan as 4?  Or both as 4?

@bbsux4evr    I’ve got the fan on order. Should I use it as a 3 pin and the cpu fan as 4?  Or both as 4?

For the CPU blower fan, I would leave it at 4-pin. For the 120mm top exhaust fan, it would depend what fan you ordered. If it is a quiet fan at 100% rpm, then there is no need to slow it down with modulation (Noctua FLX). If it is a loud fan or has a particularly high rpm, then you might want to use 4-pin, so it only roars when necessary. You will also need to order the Aurora R5/6/7 top exhaust fan bracket for your 120mm fan, if you are upgrading from a 92mm top exhaust fan.

I'm looking over the pics of the Mainboard (can't open my case at the moment).

Is there a header for the front case fan?  (If not fine by me, I'll probably get a sata power to fan speed controller (or just a straight 12volt harness) for multi fans and hook both the case fans to it.

@bbsux4evr   Is there a header for the front case fan?

No. If you are adding one front case fan, you could use a Y-slpitter cable connected to the top fan header and power both fans (top & front). If you are adding two front case fans, I would use SATA power and a SATA to 3-pin fan adapter cable for the two front fans.

Stress temps get it up to 64C (Which is still pretty good, Right?)

I guess I was just expecting too much.

I'm a little underwelmed with my new cpu heatsink and noctua 120MM nf-f12 (3 pin)

Its 5-7 higher than my previous config (Stock cpu cooler at full rpm and 90MM fan at full rpm)

It is quieter (but my room is already loud so I didn't even notice it the way it was).

Would I get any lower temp using the case fan it came with?

avc data1225b2g

if I'm doing the math right

AVC fan can max out at 148.9cfm

Noctua fan max is 54.97cfm (93.4 cubic meters/hr)

Ok I must be mixing up F and C - F is higher but at C its about the same.

So all in all to make it quieter I stayed the same. around 65C

@bbsux4evr    I'm a little underwelmed with my new cpu heatsink

Sorry to hear that. What are you CPU temps now on those stress tests you reported up thread? Did you get good, even  contact with the CPU/thermal paste/heatsink?