Panaflo L1A and Overclocked Barton 2500+, Which Heatsink?

mandms7 · Post by **mandms7** » Sun Dec 14, 2003 11:14 pm

After having just purchased an Arctic Cooling VGA Silencer for my Radeon 9700 Pro, I would like to find a replacement for the stock HSF that came with my Barton 2500+. I've owned an 80mm Panaflo L1A in the past and am content with it in terms of noise. I've got a couple questions regarding my choice.

First, will a 80mm L1A be enough to sufficiently cool my overclocked Barton (overclocked to 3200+)? If so, what would be the best heatsink to couple with it? I know some of the better heatsinks don't necessarily do well with low speed fans.

Second, would I be better off going with a 92mm Panaflo L1A? How much louder/quieter would it be and would it cool better?

I tried the Thermaltake Silent Boost which cooled my CPU quite well, but it was too loud for me. I'd loved to use the Zalman 7000A-ALCU, but its incompatible with my motherboard. I've already spent more than two hours researching this board for an answer to my question, but I never found anything that helped me with my decision.

Thanks!

Harry Azol · Post by **Harry Azol** » Sun Dec 14, 2003 11:23 pm

you would be best off with the Zalman 7000A-ALCU or -CU if they fit your motherboard

Harry Azol · Post by **Harry Azol** » Sun Dec 14, 2003 11:30 pm

I guess I might as well add my experience with it..

I have a XP1700+..

retail heatsink @ 1.46ghz (stock speed) I would get temps of 50-55 C

with the zalman, and overclocked to 2.2ghz, I get temps of 40-45 C

now here's the kicker.. I'm using the lowest/slowest setting for the zalman fan..

crypt0r · Post by **crypt0r** » Mon Dec 15, 2003 12:12 am

I have the same setup....2500+ to 3200+...I didn't have to increase the voltage so your mileage may vary. At default voltage, a SLK947U + L1A@12v = sufficient. My case has pretty much zero airflow. It's taped up everywhere, and the only exhaust is a SilenX 350W PSU fan. That fans pulls hardly ANY air whatsoever. Temps go up to 55-58 at load with a case temp of 30.

I recommend looking into the "new" thermalright HSF that has the heatpipes on it. It has been recently adapted for socket A. Otherwise, read the reviews on SPCR for info on the Zalman. I can't devolt much or at all with the 947, but you might be able to with the Zalman. Then again, you said you were content with the L1A sound level...so yeah. I hope this helps.

mandms7 · Post by **mandms7** » Mon Dec 15, 2003 11:01 am

I wish I could get the Zalman 7000A-ALCU, but it will NOT work in my motherboard...no mounting holes.

alexb · Post by **alexb** » Mon Dec 15, 2003 12:33 pm

I am exactly in the same boat. I now have a Vantec Aeroflow, which is quiet but not silent. I am OC at 2800+ with Barton 2500+, but wanna do more and was wondering if SLK-800U with Panaflo would be enough?

Also, my case Panaflo is NOT quiet AT ALL. Don't know why, but it's just as loud as my crappy Lian-li case fans!

Likif · Post by **Likif** » Mon Dec 15, 2003 7:30 pm

um, couldn't you just pull off the M1A on the Silent Boost and replace it with your L1A? Works for me.

mandms7 · Post by **mandms7** » Mon Dec 15, 2003 7:49 pm

Likif wrote:um, couldn't you just pull off the M1A on the Silent Boost and replace it with your L1A? Works for me.

No, because I returned the Silent Boost.

Come on, someone has got to have some answers.

jverheul · Post by **jverheul** » Mon Dec 15, 2003 9:10 pm

Thermalright SLK-900A with 92mm L1A is what I am going to use when I build my next box. Does this not work for you? I will be over volting and over clocking as well.

chylld · Post by **chylld** » Mon Dec 15, 2003 10:07 pm

mandms7: there are some results here which would aid your decision lots.

jverheul · Post by **jverheul** » Mon Dec 15, 2003 10:16 pm

chylld,
Can I....... um......... change my mind?
I was unaware of the new Zalman option.

JV

WannaOC · Post by **WannaOC** » Tue Dec 16, 2003 7:10 am

I just picked up a new SP-97 to cool my overclocked Barton and it is working wonders. The only place I found that sells them as of yet is heatsinkfactory.com and they charge pretty hefty but it works really well. I use a 92mm M1A on mine and an L1A should work fine also, just watch those temps at first.

I use an Abit NF7-S and it fit perfect but make sure it will fit yours before buying. Good luck!

marc999 · Post by **marc999** » Tue Dec 16, 2003 10:25 am

OK, dumb question, but what exactly is the difference between the SLK900U and the SLK947U? Is it just the shape or are there other differences?

GamingGod · Post by **GamingGod** » Tue Dec 16, 2003 10:59 am

They changed the shape to make it fit on more mobos. Also I think they claim it cools a bit better, but I might be wrong about that. Its basically the same, but fits more boards.

mandms7 · Post by **mandms7** » Tue Dec 16, 2003 1:43 pm

But will either of these cool sufficiently with an 80mm Panaflo L1A? Everyone seems to be referring to the 92mm fan. And which is more quiet, the 80mm or 92mm L1A?

Thanks!

ljs1987 · Post by **ljs1987** » Tue Dec 16, 2003 6:04 pm

I think a Zalman 6500 series (the one shaped lik a Chinese fan, not an Orb) with a PSU like the Seasonic (1x 120mm) exhausting air from on top of the cpu will work even with no fan on the cpu. Cause the spaces between the fins are pointed towards the psu fan. Hardcoreware did that with the 6500 and a dual-fan quiet psu together with an overclocked P4 over 3.0G.

papasmurf · Post by **papasmurf** » Tue Dec 16, 2003 6:50 pm

mandms7,

I can tell you that I have a Barton 2500+ overclocked to 3200+, being cooled with a Panaflo L1A and a Thermalright SLK-800, and I've never had a problem with system stability. I've got the L1A hooked up to one of those Zalman fan regulator thingies, and I usually have the knob dialled to "full power" which gives something like 11V. Probably would work at lower voltage, but it's quiet enough for me so I haven't futzed with it. I use the PC for gaming and for serious circuit simulation so the CPU gets a pretty good workout and it is very stable, had it for about 4 months now.

WannaOC · Post by **WannaOC** » Wed Dec 17, 2003 8:47 am

Most people are saying the 92mm because they push more air for the nosie they produce which is less than the 80mm will. The L1A is avaliable in all sizes, 80, 92, 120mm, all are around, you just have to find them.

mandms7 · Post by **mandms7** » Wed Dec 17, 2003 10:16 am

papasmurf wrote:mandms7,

I can tell you that I have a Barton 2500+ overclocked to 3200+, being cooled with a Panaflo L1A and a Thermalright SLK-800, and I've never had a problem with system stability. I've got the L1A hooked up to one of those Zalman fan regulator thingies, and I usually have the knob dialled to "full power" which gives something like 11V. Probably would work at lower voltage, but it's quiet enough for me so I haven't futzed with it. I use the PC for gaming and for serious circuit simulation so the CPU gets a pretty good workout and it is very stable, had it for about 4 months now.

Hey papsmurf,

Which size Panaflo L1A are you using?

Tigr · Post by **Tigr** » Wed Dec 17, 2003 2:37 pm

I have here an overclocked Athlon XP2400+ (had to make it 2600+ to do more WUs in Folding

) and it is cooled nicely with a Thermalright SLK-947 and a Papst 8412NGL fan (19 cfm, I believe). I tried Zalman CNPS-6000Cu and it sort of worked too. I am much more comfortable with Thermalright though.

papasmurf · Post by **papasmurf** » Thu Dec 18, 2003 9:49 pm

Hey papsmurf,

Which size Panaflo L1A are you using?

More detail on overclocked system: (YMMV)

Barton XP 2500+ CPU on a KT600 mobo from Albatron
OC'd to 3200+ by changing the FSB to 200
overvolted from 1.65 to 1.7, just because I felt like it
1 80mm Panaflo fan on SLK-800 heatsink
1 80mm Panaflo suspended over GeForce4 Ti4200 card, retrofit w/ Zalman ZM-80 heatsink
GF4 oc'd from 250/446 stock settings to 300/550 (Zalman rocks!)
1 80mm exhaust fan, undervolted
Antec True 430 PSU in Antec 1080 tower case.
2 Maxtor hard drives, 2 optical drives

I run the Panflo's off of full voltage from a Zalman fan-mate, because the PSU fan drowns them out anyways. CPU reading in Sandra says 45 C under load, 37C when idling, that's with a 70F / 20C ambient so adjust upwards accordingly in summer time. I would call this setup "quiet" but not "silent". I keep meaning to hack my PSU fans, duct the CPU, drop the Panaflo voltage & cushion the hard drives, but I guess I'd rather talk about it on the Internet than actually do the work.

silvervarg · Post by **silvervarg** » Fri Dec 19, 2003 1:09 am

With that noise and that amount of noise sources in your box and considering the high power of this system I would recommend that you just buy a Zalman 7000A-AlCu as replacement CPU HSF if it fits your motherboard.
It will be less or same cost as buying a good heatsink and reusing the 80mm L1A and you will get better cooling abilities (or same cooling with less noise).

Ash and Flame · Post by **Ash and Flame** » Fri Dec 19, 2003 9:44 pm

See my signature for hardware. With ambient room temperature of about 72°F (22°C), idle temperatures are: CPU 34°C / MB 29°C. While benchmarking, temperatures are: CPU 41°C / MB 30°C. Temperatures are according to Asusprobe.

Panaflo L1A and Overclocked Barton 2500+, Which Heatsink?

Panaflo L1A and Overclocked Barton 2500+, Which Heatsink?

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