is CPU temperature 24 Celsius credible?

I found a nice-looking PC left out for trash collection, took it home and tested
it. It has Corsair water cooler (perhaps H60 model) and i7-3770 CPU, with
77 W for TDP. When I go to monitor in BIOS, it shows only 24 degrees for
CPU temperature.
Often when I have gone to BIOS hardware monitor in other PCs, I get CPU
temperature more like 40 Celcius.
So if that 24 degrees is accurate, I am impressed.

wrote in message
...
I found a nice-looking PC left out for trash collection, took it home and
tested
it. It has Corsair water cooler (perhaps H60 model) and i7-3770 CPU, with
77 W for TDP. When I go to monitor in BIOS, it shows only 24 degrees for
CPU temperature.
Often when I have gone to BIOS hardware monitor in other PCs, I get CPU
temperature more like 40 Celcius.
So if that 24 degrees is accurate, I am impressed.


That's only 75°F, which I guess is possible, but sounds a bit low. Must be
one helluva cooler :-)

The Tcase on that CPU is 67.4°C (153.3°F) according to the Ark site:

http://ark.intel.com/products/65719/...up-to-3_90-GHz

So that would be a good ways off from what your BIOS is showing. I don't
have an Intel I-series CPU in any of of my PCs to compare with your
readings, and the one Intel laptop I have doesn't have hardware temp
readings :-(
--

SC Tom

On Saturday, September 9, 2017 at 8:12:42 PM UTC+8, SC Tom wrote:

The Tcase on that CPU is 67.4°C (153.3°F) according to the Ark site:

http://ark.intel.com/products/65719/...up-to-3_90-GHz

So that would be a good ways off from what your BIOS is showing. I don't
have an Intel I-series CPU in any of of my PCs to compare with your
readings, and the one Intel laptop I have doesn't have hardware temp
readings :-(
--

The only problem I see is that CPU fan would be too slow. So I set the fan
minimum speed as high as possible.

On Sat, 9 Sep 2017 04:04:55 -0700 (PDT), wrote:

I found a nice-looking PC left out for trash collection, took it home and tested
it. It has Corsair water cooler (perhaps H60 model) and i7-3770 CPU, with
77 W for TDP. When I go to monitor in BIOS, it shows only 24 degrees for
CPU temperature.
Often when I have gone to BIOS hardware monitor in other PCs, I get CPU
temperature more like 40 Celcius.
So if that 24 degrees is accurate, I am impressed.

You cannot, offhand, discount the Corsair. It's within the ballpark,
besides, among other similar cooling units for ambient conditions,
what the BIOS is reporting. Beyond which, at a further push upon
extremities, is the subsequent application load. In a water factor, a
Ryzen, for some, may average along, to not generally exceed 40C,
whereas an Intel 4GHz 4790K, conversely, is able to reach 100C with
the same cooler. Nonetheless, a balance for figures, no doubt occurs,
to coincide in value of design engineering and cooling possibilities,
whereby intent and application is a result of efficacy. If possible
and where overlap should occur, eg in extremity, and for parity at a
forced-air fan over heatsink, a block, no less then to be supplemented
by the intermediary incorporation of water ducts. (A practical
substance of condensable gas in heatpipe wicking, and entirely to
disregard a worn and obsolete block-and-fan market, predating heatwick
designs.)

On Sat, 9 Sep 2017 04:04:55 -0700 (PDT), wrote:

I found a nice-looking PC left out for trash collection, took it home and tested
it. It has Corsair water cooler (perhaps H60 model) and i7-3770 CPU, with
77 W for TDP. When I go to monitor in BIOS, it shows only 24 degrees for
CPU temperature.
Often when I have gone to BIOS hardware monitor in other PCs, I get CPU
temperature more like 40 Celcius.
So if that 24 degrees is accurate, I am impressed.

I have a NZXT X62 Kraken coolling a I7 6700 K, computers been on since
7am so abiut 3 and a half hours. Cpu temp is 20 degrees. So depending
on the ambient temperature your readings so about right....

wrote:
On Sat, 9 Sep 2017 04:04:55 -0700 (PDT), wrote:

I found a nice-looking PC left out for trash collection, took it home and tested
it. It has Corsair water cooler (perhaps H60 model) and i7-3770 CPU, with
77 W for TDP. When I go to monitor in BIOS, it shows only 24 degrees for
CPU temperature.
Often when I have gone to BIOS hardware monitor in other PCs, I get CPU
temperature more like 40 Celcius.
So if that 24 degrees is accurate, I am impressed.

I have a NZXT X62 Kraken coolling a I7 6700 K, computers been on since
7am so abiut 3 and a half hours. Cpu temp is 20 degrees. So depending
on the ambient temperature your readings so about right....

Computer air and water cooling can't go below ambient.
(And that's why we don't have to take precautions against
condensation, when using those cooling methods.)

There are active cooling methods that go sub-ambient of
course. Phase change ("refrigerator"), Peltier junctions,
liquid nitrogen or Dry ice are examples of active methods.
For sub-ambient operation, some people use neoprene sealing
around the CPU socket, so condensation doesn't corrode stuff
in the socket area.

That would make the 20C reading a bit suspicious. The
room must be frigid. Or the sensor is off a bit.

Paul

On 09/09/2017 7:04 AM, wrote:
I found a nice-looking PC left out for trash collection, took it home and tested
it. It has Corsair water cooler (perhaps H60 model) and i7-3770 CPU, with
77 W for TDP. When I go to monitor in BIOS, it shows only 24 degrees for
CPU temperature.
Often when I have gone to BIOS hardware monitor in other PCs, I get CPU
temperature more like 40 Celcius.
So if that 24 degrees is accurate, I am impressed.

Well, yeah, it's got a watercooler, so it sounds right! I get about 28C
myself at idle on my FX-8300, using a Hyper 212 EVO. And the i7-3770 was
a much more power efficient chip than the FX.

You're saying someone just put this into the trash?


--
Sent from Giganews on Thunderbird on my Toshiba laptop

On Friday, September 15, 2017 at 2:09:33 AM UTC+8, Yousuf Khan wrote:

Well, yeah, it's got a watercooler, so it sounds right! I get about 28C
myself at idle on my FX-8300, using a Hyper 212 EVO. And the i7-3770 was
a much more power efficient chip than the FX.

You're saying someone just put this into the trash?

Yes, they did (minus disk drives). The only problem I can see is the plastic
bits of the case are broken. Pleasant surprise - usually only find older crap
thrown out.
Anyway I got around to installing linux on it and the sensors package.
It reports CPUTIN = 26 C then later another adapter gives the individual
cores as 26 to 34 C. That sounds more plausible.
Perhaps the BIOS put the CPU into a lower P state, as pedal to the metal is
not needed for setup?