If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Temperature safety?
Today has been really hot here and my CPU temperature is at 56 C and it's
not even under load. It's a P4 2.8C HT. P4PE-X motherboard. What would you guys say the safe range for temperatures are for my CPU? What is the danger zone? Thanks in advance! Jody |
#2
|
|||
|
|||
In article , "Jody
Pellerin" wrote: Today has been really hot here and my CPU temperature is at 56 C and it's not even under load. It's a P4 2.8C HT. P4PE-X motherboard. What would you guys say the safe range for temperatures are for my CPU? What is the danger zone? Thanks in advance! Jody The max case temperature listed here is 75C. http://processorfinder.intel.com/scr...ALL&CorSpd=ALL Power dissipation listed is 70W. If the thermal resistance of the HSF is 0.25C/W, and the air inside the case is resting at 25C, the processor temp will be 25+(70*0.25)=42.5C at full processor load. If you cannot keep the case air temp down, by using enough case fans, then the first number in the equation will contribute to a warmer processor. A room temp of 32C plus a delta_T from room air to case air of 10C, would make the first number in the equation 42, and give a processor temp of 42+(70*0.25)=59.5C at full processor load. Since you are running idle and seeing 56, I would expect your load temp to be much worse. I've measured my 2.8C (but with HT disabled), and at idle in Win2K, it draws 13W. Using the last, pessimistic equation again 42+(13*0.25)=45.5C and you are seeing 56. Notice in the discussion above, that three numbers are needed to conduct a thermal analysis. The room temperature, the case air temperature, and the processor temperature. Without all three, it is hard to make a recommendation. My room to case delta is maybe 3 or 4C right now, and if yours is 10-15C from room temp to case temp, an extra fan might help. (I recommend a minimum of the PSU fan plus one 80mm case fan on the back of the computer, for any processor. The PSU fan thermal control is not set up to cool the computer case properly by itself, and you can effectively ignore the PSU fan as being of any use.) In the analysis above, I used a thermal resistance of 0.25C/W, a number you might see with a product like the Zalman 7000A. The Intel boxed processor HSF is somewhere in the area of 0.42C/W (according to Tomshardware). http://www.zalman.co.kr/product/cool..._list_eng.html You could fit one of these, if there is at least a centimeter of space between the top edge of the S478 bracket and your power supply. In a mid ATX case, there frequently isn't any room between the edge of the board and the PSU, but check your case to see if there would be enough room to fit it. The 7000a is the best compromise solution I can see right now for a S478. It isn't excessively loud, and not a lot of air blows through the fins. You can feel a warm cloud of air around it while it is running. You still need good case fans to move this cloud out of the computer case. HTH, Paul |
#3
|
|||
|
|||
BUMP
"Jody Pellerin" wrote in message ... Today has been really hot here and my CPU temperature is at 56 C and it's not even under load. It's a P4 2.8C HT. P4PE-X motherboard. What would you guys say the safe range for temperatures are for my CPU? What is the danger zone? Thanks in advance! Jody |
#4
|
|||
|
|||
Thank you. That was very interesting. Today, the temperature outside was 34
C and it wasn't any cooler in here. So the room was probably quite high as well. I have one 80mm case fan, on the back. It's a generic one which came with the case. I have two fans on the power supply, also built in. Antec 350watt. And then there's the stock CPU heatsink and fan. However, I'm using Artic Silver 5 compound. I can feel that cloud of heat around this computer. It's right by my legs and it's in a bit of an enclosed area because of the way this room is arranged, leaving no room for it elsewhere. I can see I'm probably going to have heat problems this summer. The CPU is now at 52. It doesn't go too much higher under load, for some reason. Today, it's ranging from what it is now to 57 C. It hovered at 55 C for the most part. So if I understand right, the highest temperature this can reach safely is 75 C? "Paul" wrote in message ... In article , "Jody Pellerin" wrote: Today has been really hot here and my CPU temperature is at 56 C and it's not even under load. It's a P4 2.8C HT. P4PE-X motherboard. What would you guys say the safe range for temperatures are for my CPU? What is the danger zone? Thanks in advance! Jody The max case temperature listed here is 75C. http://processorfinder.intel.com/scr...ALL&CorSpd=ALL Power dissipation listed is 70W. If the thermal resistance of the HSF is 0.25C/W, and the air inside the case is resting at 25C, the processor temp will be 25+(70*0.25)=42.5C at full processor load. If you cannot keep the case air temp down, by using enough case fans, then the first number in the equation will contribute to a warmer processor. A room temp of 32C plus a delta_T from room air to case air of 10C, would make the first number in the equation 42, and give a processor temp of 42+(70*0.25)=59.5C at full processor load. Since you are running idle and seeing 56, I would expect your load temp to be much worse. I've measured my 2.8C (but with HT disabled), and at idle in Win2K, it draws 13W. Using the last, pessimistic equation again 42+(13*0.25)=45.5C and you are seeing 56. Notice in the discussion above, that three numbers are needed to conduct a thermal analysis. The room temperature, the case air temperature, and the processor temperature. Without all three, it is hard to make a recommendation. My room to case delta is maybe 3 or 4C right now, and if yours is 10-15C from room temp to case temp, an extra fan might help. (I recommend a minimum of the PSU fan plus one 80mm case fan on the back of the computer, for any processor. The PSU fan thermal control is not set up to cool the computer case properly by itself, and you can effectively ignore the PSU fan as being of any use.) In the analysis above, I used a thermal resistance of 0.25C/W, a number you might see with a product like the Zalman 7000A. The Intel boxed processor HSF is somewhere in the area of 0.42C/W (according to Tomshardware). http://www.zalman.co.kr/product/cool..._list_eng.html You could fit one of these, if there is at least a centimeter of space between the top edge of the S478 bracket and your power supply. In a mid ATX case, there frequently isn't any room between the edge of the board and the PSU, but check your case to see if there would be enough room to fit it. The 7000a is the best compromise solution I can see right now for a S478. It isn't excessively loud, and not a lot of air blows through the fins. You can feel a warm cloud of air around it while it is running. You still need good case fans to move this cloud out of the computer case. HTH, Paul |
#5
|
|||
|
|||
In article , "Jody
Pellerin" wrote: Thank you. That was very interesting. Today, the temperature outside was 34 C and it wasn't any cooler in here. So the room was probably quite high as well. I have one 80mm case fan, on the back. It's a generic one which came with the case. I have two fans on the power supply, also built in. Antec 350watt. And then there's the stock CPU heatsink and fan. However, I'm using Artic Silver 5 compound. I can feel that cloud of heat around this computer. It's right by my legs and it's in a bit of an enclosed area because of the way this room is arranged, leaving no room for it elsewhere. I can see I'm probably going to have heat problems this summer. The CPU is now at 52. It doesn't go too much higher under load, for some reason. Today, it's ranging from what it is now to 57 C. It hovered at 55 C for the most part. So if I understand right, the highest temperature this can reach safely is 75 C? Well, I don't know whether the CPU temp is a diode temp or a socket temp, as that can make a small difference. So, maybe treat the 75C as the limit for now. The fact that there isn't much difference between idle and loaded temperature, could mean that the CPU heatsink is working pretty well, and the problem is getting the heat out of the case. One simple test, is to take the side off the computer and repeat the readings. If temps drop a lot, then an extra fan on the case would help. Case air moves from lower front to upper rear, so place the fan to enhance that movement. As far as max temperature is concerned, I would be more worried about the disk drive, and the power supply, than the processor at those temperatures. The disk drive is sensitive to relative humidity as well, so if the room isn't air conditioned, a RH of 60% can occur in summer, and that isn't good for the drive. For the disk drives, depending on how many you have in the case, you might want to space them out, to allow as much air to move between them as possible. It is pretty hard to increase flow rate through the case, without getting an increase in noise. One concept used in cases now, is to place a door over the drive area on the front of the computer, to muffle the sound. As well, some cases "breathe" via a vent right at the bottom front of the case, so fan noise doesn't come right out and hit the user. On the Antec Sonata I have here, the noise is shifted "down spectrum", so fan noise is more of the low frequency component, than is the case with some of the older cases. It is still annoying though. The other enemy in case design, is metal resonance, and this case is made from 1 "U" shaped piece of sheet metal, with no rivets to join the pieces. You might consider moving the computer case away from its enclosure. I place mine on top of my computer desk. HTH, Paul "Paul" wrote in message ... In article , "Jody Pellerin" wrote: Today has been really hot here and my CPU temperature is at 56 C and it's not even under load. It's a P4 2.8C HT. P4PE-X motherboard. What would you guys say the safe range for temperatures are for my CPU? What is the danger zone? Thanks in advance! Jody The max case temperature listed here is 75C. http://processorfinder.intel.com/scr...ALL&CorSpd=ALL Power dissipation listed is 70W. If the thermal resistance of the HSF is 0.25C/W, and the air inside the case is resting at 25C, the processor temp will be 25+(70*0.25)=42.5C at full processor load. If you cannot keep the case air temp down, by using enough case fans, then the first number in the equation will contribute to a warmer processor. A room temp of 32C plus a delta_T from room air to case air of 10C, would make the first number in the equation 42, and give a processor temp of 42+(70*0.25)=59.5C at full processor load. Since you are running idle and seeing 56, I would expect your load temp to be much worse. I've measured my 2.8C (but with HT disabled), and at idle in Win2K, it draws 13W. Using the last, pessimistic equation again 42+(13*0.25)=45.5C and you are seeing 56. Notice in the discussion above, that three numbers are needed to conduct a thermal analysis. The room temperature, the case air temperature, and the processor temperature. Without all three, it is hard to make a recommendation. My room to case delta is maybe 3 or 4C right now, and if yours is 10-15C from room temp to case temp, an extra fan might help. (I recommend a minimum of the PSU fan plus one 80mm case fan on the back of the computer, for any processor. The PSU fan thermal control is not set up to cool the computer case properly by itself, and you can effectively ignore the PSU fan as being of any use.) In the analysis above, I used a thermal resistance of 0.25C/W, a number you might see with a product like the Zalman 7000A. The Intel boxed processor HSF is somewhere in the area of 0.42C/W (according to Tomshardware). http://www.zalman.co.kr/product/cool..._list_eng.html You could fit one of these, if there is at least a centimeter of space between the top edge of the S478 bracket and your power supply. In a mid ATX case, there frequently isn't any room between the edge of the board and the PSU, but check your case to see if there would be enough room to fit it. The 7000a is the best compromise solution I can see right now for a S478. It isn't excessively loud, and not a lot of air blows through the fins. You can feel a warm cloud of air around it while it is running. You still need good case fans to move this cloud out of the computer case. HTH, Paul |
#6
|
|||
|
|||
The load temp should be below 55°C and the idle temp should be below 45°C
for stable operation of your entire system. The CPU will most likely work at temp up to 65°C without memory errors but that does not mean that other systems such as the north and south bridge chips on the motherboard will operate error free at those temps. If you look at your motherboard you will see a heatsink on the north bridge chip directly below the processor. If the processor is getting hot then some of that heat will dissipate to other components such as the memory modules and mother board. If you can keep it cool the system will last longer and run error free. If I were you, I would buy a CPU heat sink (copper) and replace the current case fans with an adjustable fans such as the thermaltake smart fans which can be manually controlled. Also remove the metal case fan covers with a demal tool or tin snips to increase fan air flow through the case. If you need to you can cover the fans with a standard fan grill. Total cost is ~$50.00 for 2 adjustable high volume case fans and a good solid copper CPU heatsink such as thermaltake volcano 12 or thermalright 800. "Jody Pellerin" wrote in message ... Today has been really hot here and my CPU temperature is at 56 C and it's not even under load. It's a P4 2.8C HT. P4PE-X motherboard. What would you guys say the safe range for temperatures are for my CPU? What is the danger zone? Thanks in advance! Jody |
#7
|
|||
|
|||
On Wed, 09 Jun 2004 20:09:08 GMT, "Jody Pellerin"
wrote: Jody, one thing I do without fail at the beginning of every summer. I open and clean out my tower/case of dust, liberate all the dust from the fans and ESPECIALLY take off my HSF and run water through the fins of the heatsink. This never fails to lower my cpu temps 5-10 degrees Celsius. . I do live on a farm in a dusty area, though. Did it this morning and my P4 1.8 @ 2.7Ghz went from a high 40's low fifties IDLE to a stable 41C. eric Today has been really hot here and my CPU temperature is at 56 C and it's not even under load. It's a P4 2.8C HT. P4PE-X motherboard. What would you guys say the safe range for temperatures are for my CPU? What is the danger zone? Thanks in advance! Jody |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
CPU temperature VS. system temperature | Opticreep | Homebuilt PC's | 6 | October 5th 04 03:22 PM |
Has anyone tried the KS 70 water cooling compact rig? | edek | Overclocking | 4 | May 28th 04 05:42 PM |
Need Temperature Sensor with LCD | Jay Chan | Homebuilt PC's | 7 | February 2nd 04 08:17 PM |
CPU temperature high, help! | Vedran Dracic | Homebuilt PC's | 2 | September 20th 03 01:42 AM |
HDD temperature too low?! | Newt Lives | Homebuilt PC's | 9 | July 26th 03 03:52 AM |