I really don't know what exactly is going on here!

[Kunal Das]

I have a Dell G3 3590 with i7-9750H and GTX 1660Ti. Few days back, I got the heatsink and fans of the system replaced. However, later that day in the evening, the system again started overheating, and the CPU was acting wierd. What I saw was, on heavy load, for example - games, the CPU didn't cross 1.5-2GHz clock speed. Before the heatsink was replaced, I was getting more than 3GHz clock speed. I talked to Dell, and they have decided to replaced the Motherboard and the Heatsinnk. 
And On Restart, it shut down.

 

But I need to know as why did CPU speed got half-ed all of a sudden?

 

EDIT: When Installing Factorio ( game). Fan goes full speed!

[Guest]

If it overheats, it throttles the core voltage and frequency to try and prevent therm-trip (board shuts off).

 

 

[bellabichon]

My best guess is some rookie tech at Dell forgot to put thermal paste on when they installed the new cooler.

[Moonzy]

your cpu base speed is 2.6ghz, so it running around that speed while loading all core is normal

 

that said, what are the temps?

[Wohaaa]

Definitely overheating. If your computer can turn on, try downloading a program called HWMonitor and check for temperatures under CPU. At idle it shouldn't be anything more than 40 degrees C unless you're in a desert or it really is that hot. If it crosses anywhere above 50 when you're literally doing nothing except looking at the program, then i guarantee that someone forgot to put thermal paste on.

[Wohaaa]

In case you don't know what Thermal paste is, there's the CPU. The chip at the heart of your motherboard. It runs on power and makes heat. A LOT of heat. It has to be cooled down. To do that, a heatsink is put on it, usually with a fan. There's all kinds of heatsinks. But if you try to just put two plates of metal onto each other they won't transfer heat very well, if at all, because there's a lot of air between them. To stop this, thermal paste is applied. It basically acts as a bridge to transfer heat from the CPU to the Heatsink so that the Heatsink can get rid of it.

 

Not applying thermal paste is a VERY big issue. Your computer won't be able to do anything essentially. Even on the lowest of the lows there's some form of a heatsink to absorb heat. So if your temperatures at idle are really high, then they very likely forgot thermal paste, and you shouldn't use your computer, and get it fixed immediately.

[Kunal Das]

2 hours ago, bellabichon said:

My best guess is some rookie tech at Dell forgot to put thermal paste on when they installed the new cooler.

It came pre-applied.

[Kunal Das]

2 hours ago, IamJavik said:

In case you don't know what Thermal paste is, there's the CPU. The chip at the heart of your motherboard. It runs on power and makes heat. A LOT of heat. It has to be cooled down. To do that, a heatsink is put on it, usually with a fan. There's all kinds of heatsinks. But if you try to just put two plates of metal onto each other they won't transfer heat very well, if at all, because there's a lot of air between them. To stop this, thermal paste is applied. It basically acts as a bridge to transfer heat from the CPU to the Heatsink so that the Heatsink can get rid of it.

 

Not applying thermal paste is a VERY big issue. Your computer won't be able to do anything essentially. Even on the lowest of the lows there's some form of a heatsink to absorb heat. So if your temperatures at idle are really high, then they very likely forgot thermal paste, and you shouldn't use your computer, and get it fixed immediately.

It came pre-applied with thermal paste.

[Kunal Das]

2 hours ago, Moonzy said:

your cpu base speed is 2.6ghz, so it running around that speed while loading all core is normal

 

that said, what are the temps?

As I said, "on load" that is when on oload, the i7 variant boosts up more than 3.5GHz. And in this situation, even all core load its not going more than 2GHz, and drops way below to minimum clock, that is 700MHz or something, and sometimes way below that. 

 

Temperature : 70-90 idle

[Kunal Das]

2 hours ago, IamJavik said:

Definitely overheating. If your computer can turn on, try downloading a program called HWMonitor and check for temperatures under CPU. At idle it shouldn't be anything more than 40 degrees C unless you're in a desert or it really is that hot. If it crosses anywhere above 50 when you're literally doing nothing except looking at the program, then i guarantee that someone forgot to put thermal paste on.

I generally get around 54-ish temperature, as it is hot in India. Even on normal load however, it remains on 99-100. And thermal paste came pre-applied on the new heatsink.

[Moonzy]

1 minute ago, Kunal Das said:

Temperature : 70-90 idle

it's high for idle, but that doesnt say anything about load temps

 

though one could probably say load temp is probably hitting 99c.

 

send it back in for diagnosis

[Kunal Das]

1 minute ago, Moonzy said:

it's high for idle, but that doesnt say anything about load temps

 

though one could probably say load temp is probably hitting 99c.

 

send it back in for diagnosis

Being a premium support holder, i get it checked on site (on call, via remote assist), and yes they have assigned to replace board and heatsink (again).

Talking about onload, its 100 all the time.