AlphaWing wrote:

Its this one
http://www.startech.com/Computer-Parts/Fans/6 … ervers~FAN3701U
Look at the gallery 360 pic for the actual correct picture of it.

It's tiny! But copper which is nice. They do rate it up to 1 GHz. Very impressive.

Tried a similar sized cooler, not copper though, and it seems to work just fine!

This is with a Pentium III 700E.

Important to note that this is an open test bench and we have Winter here in Australia. 25 degrees Celsius inside.

That one has a nice clip could be safe on socket 7?
I know you have to watch out for the clips on the low profile ones.. Like on that star-tech it says socket 7 compatible... but the pressure it puts down will cut into the socket nubs on a socket 7 socket and break them off.

Yes that cooler works well on Socket 7 😀

The box labels it as S7 and S370 compatible.

Yes, unfortunately, my heatsink is the one shown above. I was feeling a little adventurous (or stupid) tonight, and tried it out without a fan. It was recognized by the BIOS as a PIII 650 (a good sign), but the power automatically cut off about ten seconds after Windows booted up. When I powered on again, I saw the following message before the Windows 98 splash screen: "Alert! Previous thermal failure." I put the old CPU back in, and everything seemed fine, so no harm done, probably.

So, I won't try this again without a fan. However, I have another question now. Does a Slot 1 motherboard automatically sense the temperature of the CPU, enough to cut the power if it gets too hot? Or is there some kind of fan sensor header that needs to be connected to a fan? This is a Dell Optiplex GX1. Also, does that piece of bluish film look normal? It seems to be placed between the CPU and the sink.

I believe the CPU sends a signal to the motherboard to shut itself off. But I could be wrong...

Yup, the cpu has this feature, it's not mobo dependant. 😀

boxpressed wrote:

Yes, unfortunately, my heatsink is the one shown above. I was feeling a little adventurous (or stupid) tonight, and tried it ou […]
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Yes, unfortunately, my heatsink is the one shown above. I was feeling a little adventurous (or stupid) tonight, and tried it out without a fan. It was recognized by the BIOS as a PIII 650 (a good sign), but the power automatically cut off about ten seconds after Windows booted up. When I powered on again, I saw the following message before the Windows 98 splash screen: "Alert! Previous thermal failure." I put the old CPU back in, and everything seemed fine, so no harm done, probably.

So, I won't try this again without a fan. However, I have another question now. Does a Slot 1 motherboard automatically sense the temperature of the CPU, enough to cut the power if it gets too hot? Or is there some kind of fan sensor header that needs to be connected to a fan? This is a Dell Optiplex GX1. Also, does that piece of bluish film look normal? It seems to be placed between the CPU and the sink.

Pretty sure Slot-1 and also Slot-2 do not have thermal throttling capability. Also, that is easily the cheapest looking heat sink I have ever seen.

The processor protects itself from catastrophic overheating by use of an internal thermal sensor. This sensor is set well above […]
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The processor protects itself from catastrophic overheating by use of an internal
thermal sensor. This sensor is set well above the normal operating temperature to
ensure that there are no false trips. The processor will stop all execution when the
junction temperature exceeds approximately 135 °C. This is signaled to the system
by the THERMTRIP# (Thermal Trip) pin. Once activated, the signal remains
latched, and the processor stopped, until RESET# goes active. There is no
hysteresis built into the thermal sensor itself; as long as the die temperature drops
below the trip level, a RESET# pulse will reset the processor and execution will
continue. If the temperature has not dropped below the trip level, the processor will
continue to drive THERMTRIP# and remain stopped.

Source: http://web.archive.org/web/20060622200013/htt … ts/24445209.pdf

Anyone remember the early AMD Athlon chips and how they went up in smoke if the cooler was loose?

Check it out: https://www.youtube.com/watch?v=UoXRHexGIok

+1 to Mau1wurf1977, sounds like normal thermal shut down to me. Tried it with a basic case fan setup like AlphaWing's or Mau1wurf1977's pictures show yet? (even if it isn't attached as per those pics, as a simple test-bench it'd be useful to know if the chip works). Also, blue film?

And yes, I remember old chips that lack such a feature - I've probably killed my fair share over the years. 🤣

Thanks again for all the replies. I will try to attach a case fan to see it if makes any difference. The blue film is kind of hard to see in the photo, but it is about 1 cm wide near the middle of the connector.

boxpressed wrote:

The blue film is kind of hard to see in the photo, but it is about 1 cm wide near the middle of the connector.

Can you remove it? (does it easily pull off?) Have you removed the heatsink to see what it is? It may be left-over packing material that's causing trouble (at the worst I'm imagining someone left film on the heatsink's contact plate and put that on the CPU, at the very worst without TIM).

The film isn't removable with the sink still on. When I peer down the side of the module, I can see the thermal compound stretching between the top of the CPU and the bottom of the sink. This makes me nervous and leads me to think that the CPU may already have been damaged when I received it. I may still return it to the seller (it wasn't expensive), so I haven't tried to remove the sink yet. Is there a video or a webpage that shows how to do so for this particular type of sink?

boxpressed wrote:

The film isn't removable with the sink still on. When I peer down the side of the module, I can see the thermal compound stretching between the top of the CPU and the bottom of the sink. This makes me nervous and leads me to think that the CPU may already have been damaged when I received it. I may still return it to the seller (it wasn't expensive), so I haven't tried to remove the sink yet. Is there a video or a webpage that shows how to do so for this particular type of sink?

Went to YT to find you a video, and it's produced by our very own Mau1wurf1977! 🤣

http://www.youtube.com/watch?v=jD5ZXix3Agc

Your sink is slightly different in how its mounted, but follows the same general principle in that those black clips have to come up to get the sink free. 😀

Hehe. I'm just thinking at the amount of rage these coolers caused people 🤣

Mau1wurf1977 wrote:

Hehe. I'm just thinking at the amount of rage these coolers caused people 🤣

Slot 2 was also a lot of "fun" to take apart. 🙄

I did my own little mod for my P3-500. The original fan was all dead (bearings too), so I made this little mod, using an P4 Socket478 cooler from an old HP machine. The screws were a little too long, so i simply cut off a peace from two wallplugs each, and used them as extensions.
For power, I am using a homemade molex to 3-pin cable, were I have used a molex y-splitter cable, and a 3-pin connector solderen off an old defect mobo.
I used this cpu-fan, to get enough air-flow, plus the fan is almost silent (not many from a socket 478 system are)