RAM and GPU ultrahot and extreme noise from Z400

Question

Dear All, I just bought this machine, got rid of the 4 GB of RAM already installed in it and bought 24 GB of Corsair RAM (the only result coming up on their website when using Z400 as a query) for it.The system runs really well, except for how incredibly loud the case fan is, and that the RAM measure 70-80 degrees C (Celsius!!!) in the BIOS. GPU (Nvidia Quadro 295) I measure to 60-70 C in Hwmonitor. I can at least remove one of the two graphics cards, which could help a bit.For the CPU, mobo and HDD, all temps are good = no more than 40 C.How is this possible?I´m wondering if I did right by putting all the nearby cables "inside" of the airflow guide when putting it back on after installing the RAM. The ones from the PSU would have to be there anyway since the PSU is next to it.Is it possible that I have pulled up the power cable for another chassis fan? The one on the backside is indeed spinning.Let it be said that there are about 10 cms till where the wall is from the backside of the PC, and the temp in the room is around 30 C at the moment.This of course makes things hot, but such hot GPU and RAM when system is doing nothing is not normal, and the case fan making such noise trying to cool at (running at about 2200 RPM) shouldn´t be necessary I suppose.I upgraded the BIOS and I see that the fan is at the lowest setting. Moving it up REALLY makes it noise. Thanks in advance!

Answer 1

Jazz, With HWMonitor, the free version, from CPUID.com you can see the RAM stick's individual temps due to having an internal thermisitor built into each stick.  Mine in this souped up xw6600 are running currently about 70C, and the ambient air here measured by HWMonitor vit its "TMPIN2" listing is 19C.  Cool morning.... There are 3 other measured temps at the top in HWMonitor termed Motherboard, CPU, and TMPIN3.  Those also are thermisitor readings, but those thermisitors are part of the motherboards, and I've never been able to figure out exactly where they are located.  The only one that is built in to a cable is that ambient air one, which in the case of the xw4600 and probably your Z400 is zip tied to the front case metal grill, and for the xw6400/xw6600/etc. is integrated into the shrink wrap of the front I/O cable.  It is in the front view pic of the metal case of the xw4600 Ghetto Mod post just barely visible as a black device seen through the second square hole near the top left of the fan, located just above the fan plastic outside edge.  It gets accurate ambient air info in that position. Do me the favor of looking in this forum for "ghetto mod" because I just re-loaded all the pictures that got lost when HP ported our business workstation forum over to this new location.  The Ghetto Mod search will get you to my two main posts on this, and the one you really want to review is that for the xw4000/Z400 series, but the other has some good added info. I'm starting to think that your Corsair in-stick memory thermisitor readings may be interpreted incorrectly by HWMonitor, and you may wish to contact Corsair to find a utility that they know to work properly with the thermisitors they embed in their sticks. Some added info from prior work:  The official front card guide/fan holder for the xw4600, xw4500, xw4400 and perhaps your Z400 could hold a 92x92x25mm fan, and its part number is 325092-001.  Here is what it looks like, and below are views from the top, then bottom.  This particular part is one of 3 fan holders that came in a kit from HP that included a 92mm PWM front fan (kit was option part number DY648A).  I cannot confirm that this will work in the Z400, but all those cases are very much alike, and you can see if the appropriate holes are in your front metal when comparing to my pics from the xw4600:   Finally, there appears to be a newer version of the fan holder for the Z400 and perhaps the Z420 which likely has the same attachment tabs as the old one, 604781-003, and also look under -002 and -001.  This newer part may be directly available with proper fan from HP.  View from top, and the new projection to the right would cover the speaker.  The fan sits behind the card holder slots you see, and I never use the video/PCI card extensions that need to be added to engage in those slots: