need help with cpu overclocking

[aisatsana]

I am worried about overclocking my CPU from 3.3GHz to 4GHz~

Current build:
CPU: Sandbridge i5 2500k @ 3.3GHz
CPU cooler: Coolermaster Hyper TX3
GPU: ATI Radeon 6850
RAM: 8gigz DDR3 1600
PSU: Corsair 550W

My main worries are if the CPU cooler and the PSU is good enough.


And another question: my GPU used to run at about 35c and 45c in games, now it's running at 60+c in games. My house temperature went from 20c to 30c due to air conditioning not working anymore. Is this the reason my GPU isnt running as cool?

Ty in advance ^^

[ispano]

The hotter the ambient temps are, the hotter your devices will be, yes. Air cooling can only get a device to a certain temp above ambient, so if the ambient temp rises, so does the GPU/CPU temps.

[Uggorthaholy]

a 10° ambient change usually results in 10-15° temp change, so yet, that's completely accurate.
Coolers can only do a certain amount above ambient. That's where you're losing out.
Getting to 4.0 is quite easy, and shouldn't be an easy with that heatsink.

EDIT - SOMEONE ALWAYS BEATS ME TO MY POINT!

[Cilraaz]

1. Don't recreate threads just because the first didn't get an answer.
2. Pretty much any cooler other than stock is sufficient for mid-4GHz overclocks on a 2500k (if installed correctly with decent TIM)
3. The 10°C ambient increase should only increase your card temp by the same amount, but a 45° -> 60° jump isn't horrendous, considering the increase in ambient.

[Skelly]

To expand on this, 2C degrees rise in ambient is often a 6-8C degrees rise in component core temp. A 10C increase certainly isn't so strange to add another 15C to your GPU temp.

Could you expand on this one?

As far as I know, all heat transfer is proportional to the difference in temperature. The point where the difference in temperature between ambient and your components gives equivalent heat transfer as is created by the component, is where you have a stable temp.

In simpler terms: Shouldn't delta T be a constant regardless of ambient temp?