Question Which temp reading from HWInfo is the correct one?

[SumTingW0ng]

Pic taken after 3 hours of bf5. Which one is the correct one for temp reading? TCTL/TDIE or CPU CCD1?

https://imgur.com/rKnQdWm

View: https://imgur.com/rKnQdWm

 

[Darkbreeze]

I have the top rad fans mounted as intake. Case > rad > intake fans.

That is all wrong. Top fans or top mounted radiator fans, should NEVER be configured in an intake orientation on any standard case configuration. Front, bottom and side fans can be intakes. Top and rear fans should always be oriented as exhaust fans. For 99.9999999% of tower cases, the cooling configuration should look exactly (Or pretty damn close) like this:

-CPU (Tctl): This is the T_control temperature available on AMD CPUs only. On several generations before Zen (Ryzen), this is not a reliable representation of the temperature. On AMD Zen series this is the temperature used to control cooling and is a fixed offset from the real CPU temperature. Offset is used mostly on X-series and some Threadripper CPUs; in such case two values are shown: Tctl and Tdie. If no offset is used, then only a single value is shown as Tctl/Tdie, which equals the real temperature.

-CPU (Tdie): This value is shown in case the CPU uses an offset from Tctl and represents the real temperature (Tdie = Tctl - Tctl_offset).

-CPU Package: Shown on Intel CPUs represents a 256-millisecond average value (calculated by CPU) of the hottest temperature sensor within the CPU package.

-CPU Package (TSI): Available on pre-Zen AMD CPUs is the CPU temperature obtained via TSI interface.

-Core #n (n=any number): Actual temperature of a particular CPU core.

-CPU IA Cores: Maximum temperature among all computing (x86) cores in CPU (so part of CPU except Uncore and Graphics logic).

-CPU GT Cores: Temperature of the integrated graphics part of CPU (if present).

 

[SumTingW0ng]

That is all wrong. Top fans or top mounted radiator fans, should NEVER be configured in an intake orientation on any standard case configuration. Front, bottom and side fans can be intakes. Top and rear fans should always be oriented as exhaust fans. For 99.9999999% of tower cases, the cooling configuration should look exactly (Or pretty damn close) like this:

-CPU (Tctl): This is the T_control temperature available on AMD CPUs only. On several generations before Zen (Ryzen), this is not a reliable representation of the temperature. On AMD Zen series this is the temperature used to control cooling and is a fixed offset from the real CPU temperature. Offset is used mostly on X-series and some Threadripper CPUs; in such case two values are shown: Tctl and Tdie. If no offset is used, then only a single value is shown as Tctl/Tdie, which equals the real temperature.

-CPU (Tdie): This value is shown in case the CPU uses an offset from Tctl and represents the real temperature (Tdie = Tctl - Tctl_offset).

-CPU Package: Shown on Intel CPUs represents a 256-millisecond average value (calculated by CPU) of the hottest temperature sensor within the CPU package.

-CPU Package (TSI): Available on pre-Zen AMD CPUs is the CPU temperature obtained via TSI interface.

-Core #n (n=any number): Actual temperature of a particular CPU core.

-CPU IA Cores: Maximum temperature among all computing (x86) cores in CPU (so part of CPU except Uncore and Graphics logic).

-CPU GT Cores: Temperature of the integrated graphics part of CPU (if present).

So the CCD1 temp reading from HWInfo is the same or closest to Ryzen Master reading?

I did some researches and a lot of people suggest putting rad fans intake for cold air to the rad fins to push out the hot air.

 

[SumTingW0ng]

Front intake sucks in cold air, blows it at the gpu. Gpu fans suck in cold air, blow it across hot heatsink, creating warm air which gets blown towards the top of the case. You have top fans as intakes, blowing warm exhaust into case - directly at the gpu.

You basically have almost zero airflow in the case. Literally. Considering the downward force of those rad fans vrs the gpu fans, I'm surprised it hasn't overheated yet.

To top that off, the Rx590 uses @ 80w less at full load vrs R9 390 or Vega64, and barely more than an Rx580, so I'd not claim it to be a monster heater by any means when ppl used to crossfire R9 390 / R9 390x, or even the massive loads of the R9 295x2.

Radiators don't work by cooling cpu temps. Radiators work by removing excess energy from the coolant. The coolant is in a constant battle of trying to remain at ambient temps, which is the case temps, since that's the air it's affected by. You'd be lucky if coolant temps got to 40°C, even with a 77°C cpu. The air crossing through the fins is blowing over 40° heatpipes, into a case that's at @ 40°C. You aren't dumping HOT air into the case unless your cooler is massively under-rated, and the coolant super hot.

So it doesn't really make much of any difference to the cooler whether it's mounted on top blowing out or in front blowing in. At best you'll see a 2°C difference on the cpu, if you have decent airflow and the coolant ambient reflects that.

Turn the fans around, and once the coolant climatizes to the lower case temps, you'll stand a better chance of lower cpu temps and lower gpu temps as now you'll actually have airflow through the case, and case temps will drop, which also helps with motherboard VRM cooling.

Think of it this way, since what you read was partially correct. I get better gas milage using super gas, an extra 2miles per gallon. 20 gallon tank. So I'd get an extra 40 miles per tank. Sounds good right? At 20mpg regular gas, that's 400 or 440 miles. Regular gas is $2.10 a gallon. Super is $2.60 per gallon. Fill the tank costs $42 regular or $52 super. That extra 2 miles a gallon (40 miles) just cost an extra $10, which in regular gas would be @ 90 miles. Doesn't sound so good after all I can go 490 miles for the same money as 440 miles.

So just because someone posts that it's better for cpu if rad is intake, doesn't necessarily mean that having a top intake is going to be good overall for the entire pc, including the cpu.

The thing is if I put the rad fans as an exhaust top than the coolant temp will be 44c to 47c by sucking hot air from the gpu. My gpu max temp is 80c. The coolant go to the rad then to rad fins so the fans can push out the hot air from the rad fins. You need cold air to push out hot air and not hot air to the rad to push out the hot air. If the coolant pass by the rad return back to the cpu block is warm then that wouldn't do any good for cooling down the cpu at all. This is my reason from switching to intake. I read that exhaust top only if there is no rad mounted on the top.

 

[Darkbreeze]

If the radiator is mounted in the front of the case, which is what I would recommend on any case where it CAN be mounted there, THEN you want the radiator fans configured to be intake fans. If the radiator is in the top of the case, they need to be configured for exhaust. Whether they are intake pushing through the radiator, or intake pulling through the radiator, or exhaust pushing through the radiator or exhaust pulling through the radiator, or whether you have some kind of push-pull configuration at either location, is totally up to you, so long as it is front=intake or top=exhaust.

Any other type of configuration is 100% self defeating and flies directly in the face of the stack effect. Hot air is less dense than cold air, therefore, cooler air forces warmer air UP because cooler air which is denser wants to go DOWN.

Trying to use intake fans in the top of a case where all the heat is collecting, simply forces all that hot air BACK DOWN onto your components and not only warms the cooler air that your front intake fans have brought in, but creates turbulence AND mostly fails to be evacuated from the case because now all you have is a single rear fan exhausting a mix of cool and hot air due to the turbulence you have created.

This effect is seen pretty much everywhere. A swimming pool, on a hot day. The top 12" of water will generally be MUCH warmer than if you dive down to the lower depths of the pool. The air in your house will be much warmer near the ceiling than it is near the floor.

Why do balloons filled with helium float? Because helium is less dense than "air", and really it has nothing to do with "weight" as some explanations offer, but has everything to do with density.

Density is the amount of mass in a particular space or volume. The more mass in a given space, the more dense it is. It's easy to think that an object floats or sinks based on how heavy it is, but mass is only part of it. Whether an object floats or sinks has to do with how the mass is packed into a space. The more mass in a given space, the more dense it is. Objects that float are less dense than the fluid or gas they are floating in. They'll sink if they are more dense than the surrounding fluid or gas. Water is weird, and is an exception in some ways, but that is unrelated so we won't get into that.

All of this, convection, density, stack effect and conduction through the medium of the heatsinks and components themselves, is interrupted and botched when you introduce airflow that is directly in contrast to the natural tendencies of heat to be at the top, where you are now trying to push cold air down into. It completely disrupts the entire design of the cooling system. Certainly, with ENOUGH airflow, you could run top intake fans and front exhaust fans, but you would have to work everything twice as hard to achieve 80% as good of results. Makes no sense.