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**LETS SEE YOUR PILEDRIVER OVERCLOCKS - LET ME START WITH 5GHz+!!**

Martini1991 said:
That's some abysmal cable management :p

I assume he used cable ties, although he said he made the block.
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Yeah i know, :p its not pretty but it works, that mess of cables at the back is well out of the way from the airflow, there is just so much of it its difficult to stuff it all away, you should see the cable routing side of the case.
 
Modular PSU's dude, especially if you're packing in that PSU when you're only half of it :p
I have the 850W, cables are't too bad because I have a Xigamatek Elysium.
 
Martini1991 said:
Modular PSU's dude, especially if you're packing in that PSU when you're only half of it :p
I have the 850W, cables are too bad because I have a Xigamatek Elysium.
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Yeah, my next PSU will be a modular, that PSU is the business but it has to many cables, to thick and to long, look at the width of that 24 pin cable, you could hoist a car with that.
 
Interesting to see comments about VRM temps being allied to the socket temp. Currently using my push pull TRUE it must be cooling this area of the board quite well.

In my PC case the board is upside down (Lian Li v1000) so the CPU and VRM's are just above the PSU in the bottom of the case (above an aluminium shelf). The VRm's are sandwiched between the pull fan on the CPU and the exhaust fan for the case so are subjected to a steady airflow.

When I fit the Phantek cooler, they may be below the 2nd air radiator, we will see.

I have noticed the CPU temp (VRM temp?) is initally quite a bit higher than core temp +15C at idle but narrows to coretemp plus 5-6C at full prime. It does stay quite steady at this though.

Picture taken from an earlier incarnation but board position is the same (also much tidier now).
 
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wolvers said:
@4.6ghz with 1.47v my core and socket temps are about 51C after an hour of BF3 with my quietest fan profile. Flat out fans I can keep it ~46C but that's too noisey for my living room! :p
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What about running Prime95 on large FFT's? have you done any proper stress testing?

I'm just experimenting now and I'm at almost 62C on the socket temp just by running 4.4ghz at 1.39V, 4.6ghz seems to need considerably more voltage to be stable (~1.45V) and at that the socket temperature goes through the stratosphere, it just seems to be completely unmanageable.

Okay, I've just tried a fan blowing on the back of the motherboard socket while writing this and the CPU temp goes down 2C straight away, it's not a lot but at least I know it's not directly on the CPU and hence my waterblock is okay, but still if socket temp is linked to throttling how can I pump another 0.06V and 200mhz through the chip without the socket getting hotter?

How are people are getting these amazing temps at high clocks/voltages? are you guys just not testing with Prime95?

edit: I also tried fan blowing on VRM's and temps didn't noticeably change. my core temps are sub-50C under Prime btw for reference.
 
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I'm going to guess that vCore-1 in AI Suite II is the VRM temperatures?

mine max out at 65c.

All i could find about it is that its a 10 + 2 Phase VRM setup with Low RDS MOSFETs (20) and 11 x 820µF and 3 x 270 —F capacitors 'All solid state' (rated 105c / 500.000 MTBF at 65°C) 'Military grade' Coils feature composite cores,
but no info on the chokes.

A very sturdy setup, apparently. so we shouldn't need to worry to much about something going *pop*
 
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mmj_uk said:
What about running Prime95 on large FFT's? have you done any proper stress testing?

How are people are getting these amazing temps at high clocks/voltages? are you guys just not testing with Prime95?
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My 8350 is rock steady at 4.6 at 1.4GHz (1.416 in CPU-Z) Extreme LLC, CPU power 120%

It has been tested with prime95 blend for two hours and reached 55C core and 61C CPU.

Phanteks go on tonight so maybe updates later.
 
nkata said:
My 8350 is rock steady at 4.6 at 1.4GHz (1.416 in CPU-Z) Extreme LLC, CPU power 120%

It has been tested with prime95 blend for two hours and reached 55C core and 61C CPU.

Phanteks go on tonight so maybe updates later.
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What mobo you got? won't extreme LLC be overvolting under load? it does on my Crosshair. Can you try running the large fft test (max heat/power) and see what temps you get? it's the most stressful test out of them all.

BTW I can get into Windows and run games at 4.8ghz+ too, I'm not interested if it's not Prime stable though.
 
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mmj_uk said:
What about running Prime95 on large FFT's? have you done any proper stress testing?

I'm just experimenting now and I'm at almost 62C on the socket temp just by running 4.4ghz at 1.39V, 4.6ghz seems to need considerably more voltage to be stable (~1.45V) and at that the socket temperature goes through the stratosphere, it just seems to be completely unmanageable.

Okay, I've just tried a fan blowing on the back of the motherboard socket while writing this and the CPU temp goes down 2C straight away, it's not a lot but at least I know it's not directly on the CPU and hence my waterblock is okay, but still if socket temp is linked to throttling how can I pump another 0.06V and 200mhz through the chip without the socket getting hotter?

How are people are getting these amazing temps at high clocks/voltages? are you guys just not testing with Prime95?

edit: I also tried fan blowing on VRM's and temps didn't noticeably change. my core temps are sub-50C under Prime btw for reference.
Click to expand...

You are correct they aren't doing much load testing.
Your are not alone the behaviour of your chip is no different to anyone elses.
 
Hi there

Under PRIME Blend mode the chip ran stable at 4920MHz for 14hrs before I quit the test in the Gigabyte UD7 board.

I then tried the Asus Formula-Z 990FX board and could not even manage 4600MHz which I was very surprised by. :(
 
Gibbo said:
Hi there

Under PRIME Blend mode the chip ran stable at 4920MHz for 14hrs before I quit the test in the Gigabyte UD7 board.

I then tried the Asus Formula-Z 990FX board and could not even manage 4600MHz which I was very surprised by. :(
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When you had prime running on the UD7 did you also have CPUz or coretemp open
If so did you see the clock speed throttle back ?
Thats the most likely explanation.


Oh yes forgot to add my rock solid 5GHz Superpi at 1.44v :)

5ghz.png
 
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No of course it isn't stable in Prime.
I was just demonstrating that most quoted clocks are bull and not in anyway prime stable.
For example the overclockers.net list that someone linked to.

gibbo wanted 5Ghz clocks he didn't say stable.
 
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PCZ said:
No of course it isn't stable in Prime.
I was just demonstrating that most quoted clocks are bull and not in anyway prime stable.
For example the overclockers.net list that someone linked to.

gibbo wanted 5Ghz clocks he didn't say stable.
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Okay, thanks for clarifying.

Would you be able to test what temps you get under Prime95 large fft at say 4.6ghz 1.45V? can anyone?

I ran large fft's a couple of hours ago at 4.4ghz 1.39V and the socket temp steadily climbed to 64C, so when Gibbo says he's Primed at 4.9ghz and everyone is like "yeah mine runs cool at 5ghz" I'm left thinking something is wrong at my end because it's been a nightmare temperature wise (granted I'm a stickler for Prime stability).
 
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I also am a stickler for prime stability.
Have to be because my PC's are used to run LLR tests and that uses the gwnum library which is the number crunching engine in Prime95.

Your temps are not bad.
Most folks are too scared to show the real temps they are reaching under load.
It's the fault of a few forum members who cant help but jump in and comment.

I can tell you that small fft's generate the most heat not large ones.
George needs to change that info as it hasn't been correct for years.

I will fire up the PD rig later, to confirm temps.
From memory though your looking at temps in the 70's running small fft's. at 4.6 with 1.45v

What else would be expected though the CPU is drawing close to 300W, that is a lot of heat.
 
mmj_uk said:
What mobo you got? won't extreme LLC be overvolting under load? it does on my Crosshair. Can you try running the large fft test (max heat/power) and see what temps you get? it's the most stressful test out of them all.

BTW I can get into Windows and run games at 4.8ghz+ too, I'm not interested if it's not Prime stable though.
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M5A99x with patriot 2133MHz DDR3 10-10-10-27 1T
This is still running as I type this, volts vary 1.392 - 1.404V
Temps on CPU 62 -64C Temps on core 50-52C No throttling on multi.
NB and HT 2530MHz memory 1840MHz
This may be my day to day frequency with cool and quiet enabled. Just gone past 20 mins. tonight, but I have run this many times so far.
EDIT: LLC is Ultra high not extreme as stated
Prime stable on air in my case is not proving easy at frequencies much higher than this. I thought the Phanteks may help but I only have one 120 intake and one 120 exhaust so the case gets a bit warm.
 
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Edit, not bad nkata ^^^^^, a bit more tweaking and i recon that will get to 4.8 stable, you have a little to play with there. whats your LLC and VDDC on that?

i should be ready to order my own next week.

I'm looking forward to see what i can do with it, i get the feeling these chips have a very specific way to overclock them, the sweet spot just needs to be unlocked.

It should be a lot of fun :)
 
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