Ok, the 120mm P4 fan...

babybunny · 06-26-2002, 10:58 PM

I recently got an Alpha 8942, a 80mm to 120mm fan adapter, and the Enermax 120mm fan with adjustable speed. So now my P4 1.8A is being blown on with a crazy huge 120mm fan, a great sight!

Ok, using the Asus P4S533 and its PC Probe software (sorry, too poor for thermistor) with the P4 1.8A @ 2.7 and the voltage at 1.6 with the fan on low (1500RPM, 67.28CFM).

Idle is 35C, load is 47C, ambient is 25C. Are those temps any good? Remember, I'm using the onboard sensor, so it's probably not accurate.

Brad · 06-27-2002, 04:39 AM

try increasing the fan rev's and see what temps you get. I think those temps are ok, possibly a little high, remeber the P4 boards don't have a thermistor, they use the P4 onboard one, so the temps will be accurate

babybunny · 06-27-2002, 11:33 AM

Whoa, I never knew that about the P4 and their internal thermistors. Thanks for the reply. Increased the RPM to 2300(94.92 CFM) and the temps decreased to 32C idle and 44C load, and the ambient is 26C. Any good?

I'm kinda dissappointed in this. I thought that it would be a lot better with the huge fan and enormous airflow.

Brad · 06-28-2002, 03:28 AM

buy an 80mm from kdcomp or someone and just try it out to see how loud it is and how it performs. Maybe the big enermax doesn't have much backpressure. You might want to try a 120mm Panaflo M1A

Grendel99 · 07-11-2002, 11:54 AM

Try reversing the fan so it's sucking, Alpha's are designed so the fan is sucking away from the heatsink...

ksw · 07-13-2002, 04:53 PM

hmm in that case, my p4 is frying high. on my TH7II-Raid, the winbond software reports a 95C+ temprature.
i shut it off because my computer didnt seem to have any problem, nad pc helath status in bios never gets higher than 46C on it, btw, im using a standard heatsink and fan on it, i never got my Glacialtech Igloo 4300

( .
cant ever seem to find out why it reports so high temps

Brad · 07-15-2002, 01:58 AM

just try remounting the heatsink again, if the temps don't change then you'll just have to accept it

ksw · 07-15-2002, 07:18 AM

yeah but the weird thing is, that i think its trying to report a sensor that doesnt exist´.. or maybe, i just used TOO MUCH PASTE.

Drummahjake · 10-15-2002, 10:25 PM

I am running an AX-7 with an 80-120 adaptor with the same fan. The results are less than stellar, I think that there is a lot of air being blown back and not actually hitting the heatsink. Also, too noisy running at 2300rpm, so I am H2O cooling soon.

peregrine · 10-27-2002, 11:53 PM

With HSF's as big as the recent alpha's and AX-7's it's wise to move the power supply because there usually isn't much space between them and the fans end up working against each other.

Clearing the area around the HSF can lower the cpu temp by at least a few degrees.

06-26-2002, 10:58 PM	#1
babybunny Cooling Savant Join Date: Jun 2002 Location: USA - Ohio Posts: 120	Ok, the 120mm P4 fan... I recently got an Alpha 8942, a 80mm to 120mm fan adapter, and the Enermax 120mm fan with adjustable speed. So now my P4 1.8A is being blown on with a crazy huge 120mm fan, a great sight! Ok, using the Asus P4S533 and its PC Probe software (sorry, too poor for thermistor) with the P4 1.8A @ 2.7 and the voltage at 1.6 with the fan on low (1500RPM, 67.28CFM). Idle is 35C, load is 47C, ambient is 25C. Are those temps any good? Remember, I'm using the onboard sensor, so it's probably not accurate.

06-27-2002, 04:39 AM	#2
Brad Thermophile Join Date: Oct 2001 Location: Nuu Zeeelin Posts: 3,175	try increasing the fan rev's and see what temps you get. I think those temps are ok, possibly a little high, remeber the P4 boards don't have a thermistor, they use the P4 onboard one, so the temps will be accurate __________________ 2x P3 1100's at 1400, Abit VP6, 2x Corsair 256mb PC150 sticks, 20gb 'cuda ATA-III, 2x 40gb 'cuda ATA-IV in raid 0. 20" Trinitron. No fans 2x 2400+ at 2288mhz (16.0 x 143), Iwill MPX2, 2x Kingmax PC-3200 256mb sticks, 4x 20gb 60gxp in Raid 5 on a Promise SX6000. Asus Ti4200 320/630. Cooled by Water

06-28-2002, 03:28 AM	#4
Brad Thermophile Join Date: Oct 2001 Location: Nuu Zeeelin Posts: 3,175	buy an 80mm from kdcomp or someone and just try it out to see how loud it is and how it performs. Maybe the big enermax doesn't have much backpressure. You might want to try a 120mm Panaflo M1A __________________ 2x P3 1100's at 1400, Abit VP6, 2x Corsair 256mb PC150 sticks, 20gb 'cuda ATA-III, 2x 40gb 'cuda ATA-IV in raid 0. 20" Trinitron. No fans 2x 2400+ at 2288mhz (16.0 x 143), Iwill MPX2, 2x Kingmax PC-3200 256mb sticks, 4x 20gb 60gxp in Raid 5 on a Promise SX6000. Asus Ti4200 320/630. Cooled by Water

07-11-2002, 11:54 AM	#5
Grendel99 Cooling Neophyte Join Date: Jul 2002 Location: South Carolina Posts: 25	Try reversing the fan so it's sucking, Alpha's are designed so the fan is sucking away from the heatsink... __________________ Iwill XP333-R v2.1 (411 Bios) \|\| XP1600+ AGOIA Y @ 1811MHz @ 1.75volts \|\| Maze 3 w/ webmedic res and rad combo all 1/2 ID ClearFlex \|\| 256mb Crucial PC2100 @ 173FSB \|\| IBM 60GXP 40Gig \|\| Santa Cruz \|\| Asus GF2 GTS 32mb DDR \|\| 24x10x40x LiteOn \|\| 72X Kenwood \|\| Antec SX830 w/ 4 Panaflo L1A's

07-13-2002, 04:53 PM	#6
ksw Cooling Savant Join Date: Feb 2002 Location: SWEDEN(cold...) Posts: 195	hmm in that case, my p4 is frying high. on my TH7II-Raid, the winbond software reports a 95C+ temprature. i shut it off because my computer didnt seem to have any problem, nad pc helath status in bios never gets higher than 46C on it, btw, im using a standard heatsink and fan on it, i never got my Glacialtech Igloo 4300 ( . cant ever seem to find out why it reports so high temps __________________ www.webraced.com <- addicted as hell /me is!

06-27-2002, 11:33 AM	#3
babybunny Cooling Savant Join Date: Jun 2002 Location: USA - Ohio Posts: 120	Whoa, I never knew that about the P4 and their internal thermistors. Thanks for the reply. Increased the RPM to 2300(94.92 CFM) and the temps decreased to 32C idle and 44C load, and the ambient is 26C. Any good? I'm kinda dissappointed in this. I thought that it would be a lot better with the huge fan and enormous airflow.

07-15-2002, 01:58 AM	#7
Brad Thermophile Join Date: Oct 2001 Location: Nuu Zeeelin Posts: 3,175	just try remounting the heatsink again, if the temps don't change then you'll just have to accept it __________________ 2x P3 1100's at 1400, Abit VP6, 2x Corsair 256mb PC150 sticks, 20gb 'cuda ATA-III, 2x 40gb 'cuda ATA-IV in raid 0. 20" Trinitron. No fans 2x 2400+ at 2288mhz (16.0 x 143), Iwill MPX2, 2x Kingmax PC-3200 256mb sticks, 4x 20gb 60gxp in Raid 5 on a Promise SX6000. Asus Ti4200 320/630. Cooled by Water

07-15-2002, 07:18 AM	#8
ksw Cooling Savant Join Date: Feb 2002 Location: SWEDEN(cold...) Posts: 195	yeah but the weird thing is, that i think its trying to report a sensor that doesnt exist´.. or maybe, i just used TOO MUCH PASTE. __________________ www.webraced.com <- addicted as hell /me is!

10-15-2002, 10:25 PM	#9
Drummahjake Cooling Neophyte Join Date: Oct 2002 Location: Eau Claire, WI Posts: 12	I am running an AX-7 with an 80-120 adaptor with the same fan. The results are less than stellar, I think that there is a lot of air being blown back and not actually hitting the heatsink. Also, too noisy running at 2300rpm, so I am H2O cooling soon.

10-27-2002, 11:53 PM	#10
peregrine Cooling Neophyte Join Date: Oct 2002 Location: Australia Posts: 15	With HSF's as big as the recent alpha's and AX-7's it's wise to move the power supply because there usually isn't much space between them and the fans end up working against each other. Clearing the area around the HSF can lower the cpu temp by at least a few degrees. __________________ AthlonXP 1900+ @ 1.75Ghz; 1.85V - Alpha PAL 8045 w. 50cfm Sunon AOpen AK77-8x Max Leadtek Winfast GF3 ti-200

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