HELP: CPU Temp very high after adding radiator?

shadow007 · 15 Nov 2019 at 16:10

Ok something is not right here basically last year

i9 7900x delidded and thermal replaced with liquid metal
360 radiator with 3x Noctua AF12 Fans

Room temp: 29c
Water temp: 40c
i9 7900x at Full Load With Aida64: Max hit 78c after 1 hour

This year about 3 months ago (build was actually fully completed 2 days ago, system first time turned ON 2 days ago)

Replaced the i9 7900x original IHS with the RockitCool copper IHS (3 months ago)
Added my GPU also RTX 2080 Ti
Plus added a 480 radiator (4x Noctua AF12 fans) to go with my 360 radiator

Room temp: 24c
Water temp: 31c
i9 7900x at Full Load with Aida64: Max hit 88c within 15 minutes
GPU tested also Full Load after 30 minutes max temp was 42c

You see from above something is seriously wrong, yes I added my gpu but also added another radiator (480) I mean the water temp is way, way cooler now because of the added radiator so I was actually expecting the temps to come down maybe a little. Something is telling me it's the RockitCool copper IHS that I put on the cpu die obviously using liquid metal.

shadow007 · 15 Nov 2019 at 17:18

*Just to add overclock was the same for both times 4.7Ghz at 1.18 Volts

Bluntwrapped · 15 Nov 2019 at 17:59

What pump are you using?

shadow007 · 15 Nov 2019 at 18:07

Bluntwrapped said:
What pump are you using?

Koolance 450s with speed controller (not on full), Aquacomputer flow sensor showing 1.1 GPM (Gallons Per Minute)

wookiee87 · 15 Nov 2019 at 19:22

i've had first hand experence with a 7900x and boy oh boy that chip ran warm stock when you hit it with a intense load, my chip in the end was delidded and afterwards the temps were 30 degrees lower which allowed me to push 4.8ghz on all 10 cores with ht on and max temps on my old 360mm 45mm tick rad was 70 degrees, (before the delid cpu ran at 4.2ghz under heavy load but temps hovered around 80 under the same loop config)

one thing to note when my chip was delidded the person who carried out the work said the stock tim was very bad, had dried out and spred wasnt very good, paid £30 for a custom copper ihs and liquid metal in the end, best thing i did at that time

i'd remove you cpu and check the copper ihs is making contact with the die, if need be re apply liquid metal and remove any glue that maybe from the old ihs still on the cpu (green part) as that will raise the ihs to the point that it doesnt make contact resulting in crappy temps