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Tom Leufkins Peltier Heatsink Comments:

Date: 8/5/99 2:49:50 PM Pacific Daylight Time
From: ldube@interconnect.net (Laurence Dube’)
To: jleufkens@aol.com

received my peltier cooler last night. installed it today now I,m typing at 504 MHz. this baby is working like a charm. I set the core voltage to 2.3v and let her rip. after an hour of use I set the core back to 2.0 and she started right up..
Thank you !!

Subj: Peltier is Here…
Date: 8/4/99 7:17:30 PM Pacific Daylight Time
From: doug@xit.net (Doug Schoppe)
To: JLeufkens@aol.com (Tom Leufkens)

Tom: I did receive the peltier today. Thanks for your patience and
cooperation! I trust that you have received my check by now — I must commend the postal service for their prompt delivery of the peltier. I will mail you a check for $10 tomorrow — maybe the postal service will do better this time. The peltier did help — I was finally able to get stable @ 550 Mhz with it installed. I will try to go a little higher after it’s burned in for a while.

Date: 7/12/99 9:06:11 AM Pacific Daylight Time
From: johnc@atlantia.com
To: JLeufkens

Yeah, thanks man, it rocks! 616 at 2.3 easy with the 366.

Date: 7/12/99 9:14:37 AM Pacific Daylight Time
From: lbong@mail.utexas.edu 4:47 pm To: Tom Leufkens

Tom: I’ve bought several things from you and have been pleased with all. The pictures do not show how the setup attaches to the slocket. is it zip tied on? I have a Tekram and an Abit slocket. 366 will post at 641, not totally stable at 616. Think this may help… too damn much fun

In a message dated 8/14/99 9:46:24 AM Pacific Daylight Time,
bradelliott@mindspring.com writes:

Hey Tom, I got your Alpha Socket 370/7 heatsink with fan and peltier. I am able to run my k6-2 400 at 504 with 2.7 v!! Now I am interesting in Global Win’s new Socket 7 heatsink named globalwin FDP32. It is definitely huge! I wanna know if you could set up FDP32 the way you did set up my Alpha Socket 370/7 heatsink with fan and peltier? I try to push my k6-2 400 to 560. And do you think Global win FDP32 will fit in Epox MVP3G-M? If you dont know what Epox MVP3G-M looks like here the link for it:

http://www.epox.com/products/mboard/mvp3gm_2.html
Let me know what you think and tell me the total price for it

Thanks!
Brad

Stephen Angelini kindly wrote up Alpha Socket 7 Mounting Instructions HERE.

John Bogush’s Celeron Site for Reviews and PIII How-To.

SysOp Solutions Alpha/Peltier Article.

And HERE for a detailed picture of the ALPHA P125 package.

To find the status of your order click HERE

Alpha Comments 6/10/99: “I have a slot-1 300a@450 on an abit bh6 with no thermistor on the cpu(yet!!!). I have been running prime 95 for 10 straight hours now as I’m writting this comment. Before, with the standard hs, I used to have a cpu temp of around 35 celcius; now at 26 celcius… YEEEAAAHHH! (did I say that outloud!?!??) All of that is happening in a very humble mid-deluxe tower with an 250W ps. I have the ps fan(30cfm), intake case fan(32cfm), three mini fans on my voodoo2 with hs’s(18cfm each), a mini pci blower(probably 16cfm),
and the 2 global win fans at 26 cfm each. My basement is now very, very clean, but my cpu is getting it’s brain blown away!!! It probably feels like when we eat our “slush puppy”tm too fast with that alpha p125cm60 hs.(It’s size is very intimidating, but the performance and design is SCARINGLY beautiful!!)

My two cents: Anyone who in any way is considering overclocking… Your wasting time and effort if you’re not getting the ALPHA heatsink…. Believe me I may not be an expert, but I’ve been around, and around. No peltier that I know of can compete with this hs. Imagine them combined…” Simon from Canada.

Alpha Comments 6/10/99: “This thing kicks all type of ass! Before I attached the Alpha I was running a Celery 300a at 450 w/ default voltage and a standard temp of 86F. After installing the Alpha the comp would boot into windows 98 but no Half-Life. But after putting a Socket 7 fan on the back it will run Half-Life with no problems. This thing is the shit!” Joshua Wever.

Alpha Comments 6/3/99: …and for you hot-chip (AMD, Cyrix) folks: “I wanted to give you a quick comment on the Alpha for Socket 7/370. I’m currently still in the process of acquiring all the parts to build my Celeron 300a system, but since this heatsink will also fit a socket 7, I figured what the heck. I have an Abit IT5H (v 1.0 (how sad)) and a Cyrix 166+ processor, and I will say it is
NOT the low temp version. This combo has from time to time run at PR200+ speeds for short periods of time before, but would usually crash.

I put the Alpha on this sucker, and suddenly, I swear I CAN DO NO
WRONG!
I’ve got ALL the speeds cranked as far as they’ll go, CPU, RAM, ETC, EVERYTHING. I even have the chip running at it’s normal voltage (3.52) rather than the 3.60 that used to be required. Now, I know it’s an older chip, but I just thought it humorous to try it, but I must admit, I’m now tempted to order ANOTHER one so I can keep the alpha in this machine when I pass it along to my wife.” From Trimble Epic.

Alpha Comments 6/2/99: Email from “Sim” in Singapore: “I have just receive my Alpha heatsink today. At first sight, this thing is really HUGE!!!! After attaching it to my PII333, I immediately tried to boot at 560MHz at 2.1V. Did load Win98 but hang after 1 min of Prime95. I increase the voltage to 2.2V and it works! Prime95 is running for more than an hour now and there is still no error.

This is not possible with other heatsinks even with voltage increased to 2.4V. I must say that this heatsink is worth every cent I spent.”

Alpha Comments 5/28/99: Dewitt Blankenship: “Just a quick note to thank you for providing the two Alpha heatsinks w/fans that I ordered. I am exceptionally pleased with the product.

I have a CeleronA 433MHz Slot-1 on a BX-6r2 motherboard. Today I have successfully overclocked it to 541MHz @ 2.1 volts using the new heatsink and have been running it for about 4 hours now without any hitch. The Alpha is barely even warm to the touch. It’s a screamer! Previously I was only able to get it up to 488 MHz. I’ve already got a 40mm Peltier to do some experimenting with to see if 650MHz is possible (6.5×100). Time for the freezer…”

Joel Paguirigan: “Before I received the Alpha I could only oc my PPGA 300a to 464. Now I can run it stable at 527MHZ @ 2.1v. System Temp. is at 85F and just waiting for the BX6 r2 diode fix from you are so I can measure my CPU temp. The Alpha’s are great.”

ALPHA Comments 5/22/99:

Bob Taylor: “I received my new Alpha Celeron Monster today, and what a difference!!

I had a Mushkin Tundra previously installed. That sucker really ran hot. After scanning your site and getting wind of the apparent deficient design of the Tundra, and seeing that you were threatening to stop sales of the Alpha, I acted fast. Man am I glad I did!!

Celeron 300A @ 464MHz, 25C ambient temp, MBM 4.05 readings:

W/Mushkin Tundra – 51C (124F) (CPU) 31C (88F)(MB)

W/Alpha P125C – 37C (99F) (CPU) 27C (81F) (MB)

In a word…….WOW!!!!!!!

BTW, affixing the fans to blow over the cooling fins also seems to provide cooling to the Intel BX chipset on my ABIT BX6 R2.

Thanks for the quick turnaround and for helping a fellow gearhead see the light. I’m a born again overclocker. Hallelujah!!!”

ALPHA Comments 5/20/99

Marko: “Today I have received my Alpha and I have one word to say, it’s powerful; a few numbers:

With my ancient heatsink sandwich (room temp: 24°C):

C300A @ 504 2.0v CPU temp: 44°, MB temp: 31°

With the Alpha monster 😉

CPU temp: 40°, MB temp: 31°

Really a great heatsink! Cya from France!”

Steve Gold: “I’ve been dying to get to 504. Got your alpha today (5/17) hooked it up and tried for it. I disabled DMA for my HD (IBM 10.1 5400rpm) and bingo. I had also upgraded my cable to an ultracable a week earlier, so I think it may be a combination but my MB temp is 26*C, which is a couple of degrees lower than the Global Win -16. Thanks for the great service and commitment for us o/c’s.

goldie…what a thrill”

Stephen Angelini: “I must say that I’m a happy camper! My PPGA 300A @ 450 MHz would freeze up after 10 minutes with my old fan and heatsink combo. I was skeptical about the Alpha PFH6035MFC socket 7 fan working wonders for me; but wonders it is! I’ve been running my Celeron 300A PPGA for a few days at 450 MHz (at 2.0 VOLTS!) and it seems perfectly stable. You weren’t joking about these heatsinks.”

Gary Beavers: “Joe this is my experience with the Alpha P125CM60:”

“I have a Costa Rica SL2WM 08480201 300A, Mushkin PC100 128mb sdram – G8, and Abit BX6R2 motherboard. I bought this combo from PCNUT a very good vendor. Case is an 802PX mid tower with 300 watt power supply. I have cut 2 holes in the side and installed 2 Sunon 80mm fans with 1 blowing on vid cards and 1 on the CPU. Have 2 Sunon 80mm fans piggy backed blowing air out the back of the case ( cut the opening to fit ). One Sunon blowing in the front with opening cut to fit. 1 radio shack squirrel cage blowing towards the CPU. 1 King Kong hard drive cooler with 3 mini fans. Next I am going to add a blow hole to the top with an 80mm fan to see if it helps (using 1 of the piggy back fans). All this is with the case closed. I need to say that I got most of these ideas from Overclockers.com and John Bogush’s Celeron Site site. Thanks guys!”

“I have been running this 300A at 450 2.05v. and 464 2.15v. with the
retail heatsink and fan. It would post at 504 2.3v. but not load
windows. My internal diode would go to 54C when running Unreal. Room
temp approximately 70 – 72 F. I bought this Alpha just for something to play with ;)”

“When I first installed the P125 I set the machine to 464 2.10v. and ran Unreal, the diode now read 46C. Not bad got a 8C improvement + .05 volts less on vcore. The next thing I tried was 504 at 2.3v. – went a little further but no load on Windows 98.”

“So I then took the P125 and sanded the surface with 220 grit paper to attain the flatest surface possible on the sink. It was a little concave but not too bad. I then water polish with a very fine grit ( sorry don’t know the number) to polish it. This took about an hour. After reinstalling the sink and running Unreal the internal cpu diode now read 44C at 464 and 2.10v. Not bad – got another 2C drop by polishing the sink.”

“So I thought maybe I can lower vcore some more. Went to 464 and 2.05v. ran Unreal and the diode now read 43C for another 1C drop. I tried 504 again but this chip won’t handle it. By the way I have the sink fans blowing down across the sink and not pulling the air away. And for the last test Unreal was run for 20 hours solid. I’d say ROCK SOLID!!!”

“I must say that the Celeron 300A and Alpha P125 is a great marriage.”

Igor: “Got the PFH6035MFC fan on Thursday. What can I say… this thing is big. Before I had a little CoolMaster. This one is about 2.5 times bigger :). Here is my experience: I connected
the fan to the CPU “dry”; the CPU temp went UP by about 5 degrees Celsius. So I applied a thin layer of heatsink compound between the CPU and the heatsink. The temp DROPPED by 10 degrees Celsius!!! This is Big 🙂 Now I can actually load and use Win98 at 504 @2.2v
but it crashes in benchmarks and games :(. Maybe I’ll try 2.3v, though I’m a bit scared to fry my CPU.”

Eric Miller: “Put everything together and did a quick test. When running the distributed.net RC5 cracker I normally see CPU Diode temps of 127°F, but with Alpha cooler and 2 fans, this dropped to 104°F. No peltier, sandwich or water cooling involved. I’m a happy camper. Now I just need to find a safe and secure mounting method.”

Tsan Ng: “Just got my package on Monday. WOW!!! What a heatsink. It’s a shame I’ve to put the computer case cover back on after the PFH6035MFC was installed – that thing looks too cool to be covered up.”

Mike R: “I have been looking at heatsinks for a while and have not been very impressed with what I’ve seen. A chunk of aluminum with a bunch of fans does not strike me as very elegant. It seems to me that not very much real engineering has gone into these designs. I have an engineering background and one look at the Alpha told me that some real live science went into its design. It isn’t brain surgery, just real engineering sense. Alpha seems to know their business.”

UPDATE 5/1/99:

When you get the ALPHA P125CM60, it will come with the following parts: One Celeron rear mount with screws, 8 long screws to mount the fans, small sheet metal screws to mount the cover on the heatsink and 4 chrome plated screws to mount the P125 on a PII. This is done by screwing the heatsink into the screw holes which the Intel fan used.

The Socket 7 comes with 4 screws for the fan and a mounting clip. Also note that there are small aluminum tubes used as spacers in some of the screw packets – you will quickly understand why these are needed as some of the screws are too long and need spacers.


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