Overclocked an i7950, high temps?

JAPears · 28 Jul 2011 at 14:28

Ok, my first attempt at overclocking my i7950 using 1.325 vcore, results in a stable overclock, but temps in prime 95 max out at around 80C, is this safe? i presume no game is ever going to punish the CPU this much?

Or should i play around with my voltage settings a little more?

JAPears · 28 Jul 2011 at 14:30

another note, temps across the cores seem to be relatively similar, appart from core #3 which is always a good 6C lower than the others, is this a problem?

Marine-RX179 · 28 Jul 2011 at 14:55

I hope you are not using the stock cooler...cause they are not good enough for overclocking with voltage increased.

JAPears · 28 Jul 2011 at 14:58

*update* lowered my vcore to 1.275 and temps are a lot better, around 75C

JAPears · 28 Jul 2011 at 15:00

Marine-RX179 said:
I hope you are not using the stock cooler...cause they are not good enough for overclocking with voltage increased.

I'm using http://www.overclockers.co.uk/showproduct.php?prodid=HS-076-AK&groupid=701&catid=57&subcat=1395 which was pretty decent a year ago according to reviews

Marine-RX179 · 28 Jul 2011 at 15:06

JAPears said:
I'm using http://www.overclockers.co.uk/showproduct.php?prodid=HS-076-AK&groupid=701&catid=57&subcat=1395 which was pretty decent a year ago according to reviews

The Akasa V2 is an "ok" cooler, but not really that great comparing to other coolers around that price range (such as the Akasa Nero S).

Yea...if you can keep the overclock stable at a lower vcore, it definitely would help reducing the temp.

JAPears · 28 Jul 2011 at 15:13

Marine-RX179 said:
The Akasa V2 is an "ok" cooler, but not really that great comparing to other coolers around that price range (such as the Akasa Nero S).

Yea...if you can keep the overclock stable at a lower vcore, it definitely would help reducing the temp.

the nero s is the one i have, I couldnt find the exact model on OC anymore, so i linked the closed to it, assuming it is probably the same.

system has shown to be unstable with the above settings, any advice? ive upped to 1.285 and am running stress test atm, we'll see how it goes

Marine-RX179 · 28 Jul 2011 at 15:37

You still haven't mention what clock speed you overclocked your CPU to...

Also, I think it might not be the case with your CPU cooler being not good enough, but more too do with not enough cool air being intake into the case, and waste heat that are generated is not being exhausted from the case fast enough. What case you got and do you have good airflow? To be honest 1.325 vcore is not really that high...so I'm thinking it might be more to do with poor case airflow.

Also factor in that it has quite warm these couple of days.

JAPears · 28 Jul 2011 at 15:43

I have a silverstone fortress ft02 so i doubt airflow is a problem...
curently have multiplier at 23x 175 BCLK giving me 4ghz or so..
using 1.3 vcore voltage and auto vtt atm, should i set the vtt manually? it was stable at 1.325 vcore auto vtt, but was very hot

JAPears · 28 Jul 2011 at 15:47

i should maybe reseat my CPU cooler?

MooMoo444 · 28 Jul 2011 at 15:48

1.3v is probably a bit high I would have thought. I can do 4.22 on mine at 1.28, obviously every chip is different but still, I think you dont need so much.

Marine-RX179 · 28 Jul 2011 at 15:48

JAPears said:
i should maybe reseat my CPU cooler?

Only if you things for removing/cleaning off old thermal paste and with new thermal paste for reappling.

JAPears said:
I have a silverstone fortress ft02 so i doubt airflow is a problem...
curently have multiplier at 23x 175 BCLK giving me 4ghz or so..
using 1.3 vcore voltage and auto vtt atm, should i set the vtt manually? it was stable at 1.325 vcore auto vtt, but was very hot

ok so that rule out poor airflow. As for overclocking, if you are aimming only 4.0GHz, why not use 20x200? It will run the rams at 1,600MHz (200x8), rather than underclock it to 1400 (175x8).

By the way how warm is your room at the moment? If you room fully shutted. the hot air that are being exhaust into your room thus making your room hotter, and the hot air just get intake back into the case like a cycle.

JAPears · 28 Jul 2011 at 15:51

MooMoo444 said:
1.3v is probably a bit high I would have thought. I can do 4.22 on mine at 1.28, obviously every chip is different but still, I think you dont need so much.

im curious to know your other settings?

JAPears · 28 Jul 2011 at 15:56

Marine-RX179 said:
Only if you things for removing old thermal paste and new thermal paste for reappling.

ok so that rule out poor airflow. As for overclocking, if you are aimming only 4.0GHz, why not use 20x200? It will run the rams at 1,600MHz (200x8), rather than underclock it to 1400 (175x8).

will this lead to cooler temps? lower voltage? im an overclocking novice

Marine-RX179 · 28 Jul 2011 at 15:59

JAPears said:
will this lead to cooler temps? lower voltage? im an overclocking novice

Changing to 200x20 probably won't affect temp too much, but at least your RAMs won't be ran at a lower speed than it should. Your memory IS rated at 1,600MHz right?

JAPears · 28 Jul 2011 at 16:00

Marine-RX179 said:
Changing to 200x20 probably won't affect temp too much, but at least your RAMs won't be ran at a lower speed than it should. Your memory IS rated at 1,600MHz right?

yes indeed, should i be changign any other voltages other than vcore? ive read a few guides, but nothing specific to my 950, and settings used on a 920 dont work

seandog · 28 Jul 2011 at 16:00

JAPears said:
curently have multiplier at 23x 175 BCLK giving me 4ghz or so..
using 1.3 vcore voltage and auto vtt atm

Change your BCLK back to 100 or else you might find your chip lasting as long as a pack of malteasers at a fat fighters convention

edit: or is this just true for the 2500 and 2600 k chips?

edit#2: after being wrong im not gonna wuss out and change my post, im gonna leave it on here and man up

JAPears · 28 Jul 2011 at 16:02

seandog said:
Change your BCLK back to 100 or else you might find your chip lasting as long as a pack of malteasers at a fat fighters convention

even at stock it doesnt run at 100.. it starts at 133

seandog · 28 Jul 2011 at 16:04

ah feel free to slap me then and ignore my AMD based ignorance

JAPears · 28 Jul 2011 at 16:16

Marine-RX179 said:
Changing to 200x20 probably won't affect temp too much, but at least your RAMs won't be ran at a lower speed than it should. Your memory IS rated at 1,600MHz right?

those settings wouldnt even boot