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SteveC
2nd January 2001, 04:58
Hello to one and all!

Right, I need some help. At the moment, I have a coolermaster (can't remember which one, but I think it's a CB5-5K12 ?) anyway, it's meant to be pretty good - it's a copper base with copper 'pipes' running up through a load of 'fins' with a fan blowing across the fins. However, it cools my CPU at default clocking, but when I overclock I easily to reach 50 deg C and then I begin to get problems...

This heatsink gets a review here ( http://www.hexus.net/cm_hp.shtml )

I have a 1Gig Tbird on an Asus A7V.

Does any one have any recommendations?

Also, at a local computer shop where I work, we are building more and more 1Gig and higher athlon machines. There are usually in Midi Tower Cases. Only problem is, is that especially on 1.1Gig and higher athlons, they over heat! They quickly reach 52 deg C and crash!
We currently have been trying out the extremely noisy GlobalWin FOP38 (46dB!!) but even they're not good enough.

A review here ( http://www.hexus.net/fop38.shtml ) reckons it's good, but they use artic silver compound... We don't use any extra heatsink transfer compound apart from what comes attached to the base of the heatsink... could that be it?

Should I use this artic silver compound too?

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Cheers,
Steve

"Life is what we make of it, yet most of us just fake"

[This message has been edited by SteveC (edited 02 January 2001).]

Ant
2nd January 2001, 06:11
I've just got a SuperOrb, unfortunately I don't have my new Atlon CPU yet so haven't tested it out http://forums.murc.ws/ubb/frown.gif I was going to go with FOP38 but heard they were very noisey, I've got to have something quiet, I already get nagged because my keyboard is too loud!

Thundrchez
2nd January 2001, 07:58
You absolutely positively have to use thermal grease. That will probably be enough of a trick to get your CPU temperature down to a reasonable level.

I use an Alpha PAL6035 and arctic silver on my oc'd 950 tbird. After doing some intense 3D gaming, a quick reboot to look at the CPU temp in bios shows that it is just below 40C, maybe 38 or 39C.

[This message has been edited by Thundrchez (edited 03 January 2001).]

Novdid
2nd January 2001, 08:17
I second the vote for the alpha.

But I would rather go for the Kanie Hedgehog if it weren´t that heavy. It can crush a cpu quite easily and even rip a socket off if your'e not careful enough when you move the case around. But then again the hedgehog is the best heatsink.

SteveC
2nd January 2001, 08:21
Oh yeah, we use heatsink compount - we're not that useless! But only the normal white stuff (no, not milk http://forums.murc.ws/ubb/wink.gif )

We've just this second ordered some Arctic Silver and we'll see if that does the trick.

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Cheers,
Steve

"Life is what we make of it, yet most of us just fake"

ALBPM
2nd January 2001, 09:09
Steve, just out of curiosity does the fan blow or suck the air through the Coolermaster heat pipe heat sink??? If it's blowing turn it around so it sucks air out and see if that takes a few degrees off the Temp.

Paul

SteveC
2nd January 2001, 09:14
Hi Paul,

Already tried that - It was blowing upwards from the bottom through the fins, and then I changed it so it sucked upwards from the top and it didn't make any difference.

Anyone know where I can get more powerful (but not any bigger) fans from?

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Cheers,
Steve

"Life is what we make of it, yet most of us just fake"

RoGuE
2nd January 2001, 09:54
I'd recommend the TaiSol CGK742092 - very good cooler, and not too noisy.
http://images.anandtech.com/reviews/cooling/roundups/11-2000/socketa/taisol.jpg

Otherwise, my second choice would be the Chrome Orb.

[This message has been edited by RoGuE (edited 02 January 2001).]

Grego
2nd January 2001, 10:24
I'm using the alpha 6035 for my tbird together with normal thermal paste, I will however order arctic silver compound, since I have read that it will lower the temp up to as much as 4 degrees celcius.

SteveC
2nd January 2001, 13:04
As I'm stuck with my original heatsink (the copper pipe coolermaster) and no arctic silver till tomorrow at the earliest, I've tried adding an extra fan (a better one than before) and sanded down the copper base and used some fresh silicone based heatsink compound (cheapo)... I can now run at 11x105 = 1155Mhz. Under full load (SETI@Home) the CPU runs at 53degC. This has helped as before I'd have crashed before running this long.
No load (just windows 2000 and IE5 running, it's about 50degC.

Hopefully tomorrow I'll be able to try out a SuperOrb with Arctic silver compound...

With my current setup, 12x100 Win2k fails to boot with blue screens. Any ideas on how I might get it to boot successfuly? I'm already at 1.85V and I'm not sure I want to mod the mainboard just yet.

Some pics:

The heatsink with one fan removed:

http://194.131.85.139/steve/hs1.jpg

The cleaned up bottom of the copper base and the freebie heatsink compound crap that came free with an old heatsink:

http://194.131.85.139/steve/hs2.jpg

The fitted unit:

http://194.131.85.139/steve/hs3.jpg

The BIG fan at the top/back of my case (the rotating blades are the same size of a CD). This really keeps my drives cool! http://forums.murc.ws/ubb/smile.gif

http://194.131.85.139/steve/hs4.jpg



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Cheers,
Steve

"Life is what we make of it, yet most of us just fake"

SteveC
2nd January 2001, 13:20
Yup, me again! http://forums.murc.ws/ubb/smile.gif

Just a couple more things:

With the case lid on, that big fan reduces the CPU And chipset temp by 3 degrees C.

I got a bit of a dilemma. With the current setup, I can have the bus speed at 100Mhz and have the 'System Performance Settings' option at 'Optimal' and RAM at CAS2 which gives me an extra 43Mb/sec in the SiSoft Sandra memory benchmark (~10%), compared to if I have the bus speed at 105Mhz, I am forced by the BIOS to set the 'System Performance Settings' to 'Default'...

What's better - 10% faster memory speed, or 5% faster CPU clock speed?

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Cheers,
Steve

"Life is what we make of it, yet most of us just fake"

[This message has been edited by SteveC (edited 02 January 2001).]

Indiana
2nd January 2001, 14:00
Originally posted by SteveC:

What's better - 10% faster memory speed, or 5% faster CPU clock speed?


I'd go for the memory-speed, I found this have the larger impact, but then this will depend heavily on the used applications.
With games you should probably prefer the faster CPU-clocking, while most "Office-type", image-, sound- or video-editing applications are quite sensitive to mem-performance.

I was lucky when buying my RAM, it works up to a FSB of 110 with CAS2 and the ABits "turbo" settings, that makes a mem-speed of 110+(110/3) = ~147MHz (although they were cheap and only CAS3 rated at 133MHz).

With those settings (FSB110, multiplier 9.5) Sandra reports
<img SRC="http://www.indiana.claranet.de/SandraMEM.png"


This is about the highest score I've ever seen Sandra report, except for the P-IV numbers, of course... (no wonder at a FSB of 400MHz) http://forums.murc.ws/ubb/wink.gif

ALBPM
2nd January 2001, 17:05
Yes, use the Arctic Silver..... TIMs or Pads are worthless. Also lap the heat sinks with 300 or 400 grit carbide wet/dry sand paper. Then finish them off with 1500 or 2000 grit carbide sand paper

Try the Hedgehog with the Delta fan or Y.S. TECH 27 CFM fan... no less than a 27 CFM fan. Also the Taisol CEK734092 looks good for socket A.
http://www.overclockers.co.uk/acatalog/Online_Catalogue_Other_CPU_and_System_Coole rs_18.html (http://www.overclockers.co.uk/acatalog/Online_Catalogue_Other_CPU_and_System_Coolers_18.h tml)

Paul


[This message has been edited by ALBPM (edited 02 January 2001).]

ayoub_ibrahim
2nd January 2001, 17:12
if you remove the thermal pad & use some heat transfer compound(arctic silver if you can splash out for the best,maplins own is ok!)instead, you should find a good cpu temperature drop.

SteveC
2nd January 2001, 17:37
Is the TermalTake SuperOrb any good?

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Cheers,
Steve

"Life is what we make of it, yet most of us just fake"

SteveC
2nd January 2001, 17:56
After a touch of tweaking, the most I can get out of mine is 483/565MB/s Which is 133Mhz at CAS2. Like you I got RAM rated at CAS3 at 133Mhz, but seems to run at CAS2 http://forums.murc.ws/ubb/smile.gif

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Cheers,
Steve

"Life is what we make of it, yet most of us just fake"

ALBPM
2nd January 2001, 18:13
Steve, don't spend your hard earned money on the Super Orb....

Paul

Himself
2nd January 2001, 18:32
SteveC,

Check the airflow of your system before worrying about heatsinks, right now it looks like you are cooling the top of you case nicely and sucking all the hot air in your system over your cpu. http://forums.murc.ws/ubb/smile.gif

Alfie
2nd January 2001, 18:45
Duron 700@1,000mhz.
Epox-8kta2 motherboard.
Alpha pal 6035 mfc heatsink
Artic silver compound.
Ambient temp 70f
cpu temp:
medium load =34.5-37.4c
Heavy load= 39.7-43.8c
The Alpha heatsink seems to do a pretty good job.
The Tiasol heatsinks are also good performers and their newer line looks very impressive(like the one shown previously)

SteveC
3rd January 2001, 02:42
Paul, I was just going to try out a SupoerOrb because I know that my shop I work in is getting a couple in. According to reviews around, it isn't the best, but it also isn't that bad. It fits my boards OK.
I'll see if it's any good.

I've got another problem now though - my PC often doesn't start up. Cycling the power again takes to me the BIOS setup screen and tells me that basically I'm overclocking my CPU too far and it can't boot. I'm only doing 11x100 (133 RAM) at the moment and even at 1.85V it still does it. Once I reset the BIOS to how I want it, it then works....till the next reboot.

------------------
Cheers,
Steve

"Life is what we make of it, yet most of us just fake"

Paddy
3rd January 2001, 02:49
Steve, I have the same mobo/chip/Heat sink combo as you.

With the case closed i hardly ever go above 40'C, but then i'm not overclocked (100x10)

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I am running Win2K Pro: SP1 on the following:
T'bird 1GHz on an Asus A7V
256 Mb PC100 RAM (128Mb Double bank, 64Mb single bank, 32Mb double bank)
IBM DJNA-372200 21Gb UDMA 66 Drive
2 x IBM DNES-309170W SCSI Disk Drive
Matshita DVD-ROM SR-8584A
Plextor PX-W1210S SCSI CD-RW
Intel Pro/100+ Management Ethernet Adaptor
Iwill 2936 Ultra Wide SCSI controller
SB Live! 5.1
USB IntelliMouse Explorer Optical
Creative WebCam Go! Plus 8Mb
UM9800 V.90 USB Modem
Tornado 1000 case (with six 80mm fans!)

SteveC
3rd January 2001, 03:08
Hey Paddy!

These mobos and CPUs are getting quite popular! Buy your stuff from Scan, by chance?

What have you got between your CPU and heatsink? When I don't overclock, My temp is nearer 40deg C too.

Oh, and himself: That fan draws air in from anywhere in my case! In through the front bottom is the easiest path, but if I put my hand over my drives (CD-RW,DVD,TAPE,PD) I can feel air going through between them! As my mainboard temp hovers between 28 and 31degC, I don't think that the airflow is that bad...

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Cheers,
Steve

"Life is what we make of it, yet most of us just fake"

RichL
3rd January 2001, 06:22
Steve
I've read several reviews of the Superorb - most reckon its not much good - certainly not a match for the FOP32's or Alphas.
BTW where do you work? I'm in Stanford and Im curious what PC shops in the locale stock some of the more 'exotic' (ie, its named not generic) overclocking kit.

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AMD K6III/475, TMC TVGF, 160mb PC100, IBM 10gb/7200, Matrox G400Max, Iiyama a702, SBLive, Compaq3121 Nic - Win98SE/DirectX8/Powerdesk6.10 w TGL1.3

RichL
3rd January 2001, 06:31
PS - Have you tried using CPUIdle?
For those who dont know - this is a little software util for Win9X/NT/2000 that sends an Idle or Sleep command to the CPU when the load is low.
My K6III is Oclocked from 450 to 475, and used to idle at 35C, peaking at 45C after a long session of TFC.
Now it idles at whatever the ambient temp inside the case is (usually 25-29C) and peaks at 37C after some TFCing.

Its not the solution to put on customers PCs, but for your own machine it cant do any harm.

DentyCracker
3rd January 2001, 06:45
Not much help when you're running seti 24/7 though

Himself
3rd January 2001, 07:44
At 850 @ 1.72V, running RC5, my duron 600 measures 30C, otherwise 26C. MB temp currently is 20C.

SteveC
3rd January 2001, 07:50
RichL - I work at the weekends in a shop on the A127 in southend called Brunel Computer Services. We don't usually stock brand name overclocking stuff, but now we're biulding more higher spec machines, we are finding that we have to turn to more sophisticated cooling techniques and so have got/are getting in, the FOP38's, SuperOrbs and arctic silver. BTW: We're only ordering from www.overclockers.co.uk, (http://www.overclockers.co.uk,) so it's not any cheaper from us! http://forums.murc.ws/ubb/smile.gif

I use SETI 24/7 so CPUIdle won't help me...

------------------
Cheers,
Steve

"Life is what we make of it, yet most of us just fake"

Paddy
3rd January 2001, 09:58
Steve: Yup, from Scan.
I got a Tornado 1000 case from overclockers aswell.

I have not put any thermal compound on the heatsink, but i'm anxious to see the results as these chips to seem to run on the hot side.

If i can get the temp down a bit then i'll probably O/C too...

SCompRacer
3rd January 2001, 17:59
I have a ThermalTake Chrome Orb with my 900 T'bird and it can get to 43C when game stressed, no O'clocking. Runs 34 to 36C idling around, but I do have alot of fans due to SCSI drives heating case.

My mainboard is at 27C right now, CPU 34C.

Ordered some of that Arctic Silver so I can get rid of that thermal pad, anxious to see results.

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ABIT KT7 non-RAID * 900MHz Athlon T'bird * 128MB Micron PC/133 RAM * Two Cheetah LVD's * Barracuda UW * DiamondMAX IDE * Plextor Ultraplex 40max/Plexwriter 12/4/32 * Hitachi IDE DVD * 2940U2W * SB Live * 3Com 905B-TX NIC * 3Com Courier V. Ext. * Hollywood + * Win 98SE, Win 2000 *

[This message has been edited by SCompRacer (edited 03 January 2001).]