Skylake i7 6700 - Running too hot?

What's peoples thoughts on this Skylake i7 6700, its the factory fitted CPU on a little SFF Dell OptiPlex 3040, the machine runs nice and cool and quiet normally but this was after 1 hour of video encoding it peaked at 83c

what's the general opinion? little too hot?

Wow toasty for a stock intel is it not! would expect high 50's underload. I suppose it will be at the top end of thermal capacity being the i7 in SFF case. Think we need to have a look at a better cooling solution for it

yea its a bit on the hot side there Martin.

Sadly theirs not much aftermarket coolers that will fit the SFF systems.

would be good to see what could be done though..

I think I will pop the cooler off and apply some fresh high quality thermal paste and then load it up again and see if there is any difference to be had as a starting point.

yea Ive seen fresh thermal paste make all the difference.
has it ever been done since it was new?

nope never touched, however its only around 3 months old. will sort that today and post up the results!

yea will be good to see the results. Ive always thought that OEM company's will use cheaper thermal paste. ( or even there own brand )

I know my old Msi 7950 ran hot from day 1 until I changed the thermal paste then it was a lot better. I saw a drop of around 10c at load.

Well we have done a test (so we could pop a video up on the channel for anyone else with the same problem)

Prime 95 stress test for 12 minutes, MAX temp hit in Open Hardware Monitor was 84c

machine was then stripped, cleaned and a fresh coat of Arctic Silver 5 applied. Test then re ran and the MAX achieved temperature was.........


83c.... So it turns out the factory thermal compound used by Dell is of a decent quality as like James mentioned I have noted drops sometimes in the region of 10c in the past.


Because the machine runs at acceptable temperatures until you start getting close to 10 minutes under load I believe the issue is actually just the SFF case struggling to vent the hot air inside the case as it only has a front intake fan and the rear panel is all vented to allow air to escape, the CPU cooler also has a shroud that helps vent it out the back.

not sure if something like this would fit your case. I saw this when I had an old lenovo with an i3 system but I sold the system.

www.corsair.com/en-gb/hydro-series-h5-sf...le-liquid-cpu-cooler

it says RRP £75 but it can be bought from Scan for £54

www.scan.co.uk/products/corsair-hydro-se...wcF3vg0aAkXPEALw_wcB

it gets a decent review

www.eteknix.com/corsair-hydro-series-h5-...o-cpu-cooler-review/

that's a nice little rad! the problem is the machine uses a proprietary CPU cooler mounting pattern so fitting anything else on it would need some custom work. as the machine is just a stop gap I fear its not worth worrying about!

during usual light daily use the machine floats around 30c so its not a problem its just that odd occasion when I load it up for a bit of video encoding it gets toasty!

any way of even mounting a few fans on the rear to get the air flowing a bit better?

nope! the PSU has no molex connectors free, it only has a motherboard connector and hdd sata connector, even the dvd-rw has a power connector fed from the motherboard!

one of those machines that is just what you see is what you get!

Martin wrote:

nope! the PSU has no molex connectors free, it only has a motherboard connector and hdd sata connector, even the dvd-rw has a power connector fed from the motherboard!

one of those machines that is just what you see is what you get!

yea its one of them when you get inside it you realise why you like to build your own...

So its not just the Project V8/ Server thats a Space Heater! yours is just a very compact one haha! Surely we could take a feed off one of the connectors to run another fan using a custom wiring loom to tap into the connector (something that can be easily removed and put back to stock?

when I see pics like this

on FB, why not connect it direclty to a separeted heating.
just some little modifications on the connections should do the job.