Testing overclock on my 8350: wacky cpu temp diode

[CooLWoLF]

I am testing out my overclock on my 8350. So far I am at 4.3ghz @1.4v, but my temp diode is going wacky. My system is running Prime stable though. My question is, since I can't trust my cpu temp diode, what about my liquid temp sensor in the radiator? It currently reads my liquid at rough 40c. Any thoughts?

 

[Dark Lord of Tech]

I always disable it because then the CPU is more stable.

Don't worry if your stable , leave it alone.

 

[CooLWoLF]

Cool thanks. I am running at 4.4ghz for awhile, then I will jump to 4.5 and stress for a few hours again. I think I will be happy at a stable 4.5ghz if I can keep the voltage around 1.41 and not have to go higher.

Should I be concerned about my VRMs since they are kind of covered by my liquid cooler radiator/fan and not getting the kind of air flow that a normal cpu air cooler would provide around them?

 

[Dark Lord of Tech]

Be careful!

 

[Buzz247]

absolutely - this is a common issue when folks switch to WC - they forget that VRMs are not fed air and then rads block them too - try mounting (placing temporarily) a fan pointed at vrms and run some testing - see what happens 😉

 

[CooLWoLF]

Well they aren't to hot to the touch, yet. I am concerned about going any higher.

 

[Dark Lord of Tech]

I wouldn't push it further.

 

[CooLWoLF]

OK. Any recommendations on how to cool my VRMs? I am looking at a Antec Spot Cool.

BTW, just went up to 4.5ghz at 1.41v and received a Prime95 error fairly quickly so I guess I am done till I can find a way to make sure my VRMs don't get hot. Again, they are not to hot to the touch yet (I can hold my index finger on them without issue), I am just concerned with going any higher.

 

[Dark Lord of Tech]

A better 990FX board would help.

 

[CooLWoLF]

Well I just got this motherboard in April so I won't be changing motherboards anytime soon.

I just bought an Antec Spot Cooler that I will position over the VRM heatsink. I will see how everything goes once it gets here in a few days. How do people manage to not blow their VRM with water cooler setups at 1.5v and greater? They MUST get really hot.

 

[Dark Lord of Tech]

A better board in the future with more power phases will help.

Enjoy your overclocking!

 

[Dark Lord of Tech]

Don't forget to choose a Best Solution when opening a question thread , the forum members will appreciate that.Thanks for posting on the forum.

 

[ingtar33]

Wow that's really impressive! Anytime I have seen someone get a ~5ghz overclock its at or close to 1.5v.

my buddy had his fx6300 up over 5.0 without touching his vcore... crazy awesome chip. ended up clocking it up to an everyday 5.6ghz.

but yeah... 1.4 seems high for 4.4... but then not everyone wins the cpu lottery. there are fx chips which can barely clock past 4.5.

OP, i would suggest you look into aftermarket heatsinks for your VRM / Power Phase system... it's a cheap solution to help you stabalize your overclock. I also found AMD cpus can be "brute forced" into stability by throwing vcore at it, which might be what you're doing. you might be covering up an undervolted or too slow northbridge with your vcore. Look into clocking up the northbridge a bit, and see if that stabilizes your overclock without touching the vcore.

 

[CooLWoLF]

Wow that's really impressive! Anytime I have seen someone get a ~5ghz overclock its at or close to 1.5v.

my buddy had his fx6300 up over 5.0 without touching his vcore... crazy awesome chip. ended up clocking it up to an everyday 5.6ghz.

but yeah... 1.4 seems high for 4.4... but then not everyone wins the cpu lottery. there are fx chips which can barely clock past 4.5.

OP, i would suggest you look into aftermarket heatsinks for your VRM / Power Phase system... it's a cheap solution to help you stabalize your overclock. I also found AMD cpus can be "brute forced" into stability by throwing vcore at it, which might be what you're doing. you might be covering up an undervolted or too slow northbridge with your vcore. Look into clocking up the northbridge a bit, and see if that stabilizes your overclock without touching the vcore.

I have an Antec Spot Cool fan on the way. I am going to position it over the existing VRM heatsink I have and see what kind of result that gives me.

I went to home depot and bought a laser thermometer. My VRM heatsink is 74c at the hottest spot I could locate, after 10 minutes of Prime95. Acceptable? I have read that under 80c is OK, and considering no program grinds a system for power like P95 does....

 

[Dark Lord of Tech]

You should be ok.

 

[CooLWoLF]

Since I will have some active cooling on the VRMs now, do you think i am ok to bump up the voltage if necessary to hit 4.5ghz? Or stick where i am at?

 

[ingtar33]

Since I will have some active cooling on the VRMs now, do you think i am ok to bump up the voltage if necessary to hit 4.5ghz? Or stick where i am at?

i'd get a copper heatsink on newegg... like this one. http://www.newegg.com/Product/Product.aspx?Item=N82E16835708012

then i'd play with your northbridge frequency, nb voltage and cpu/nb voltage, see if you can't stabilize your cpu at the next step without adding a lot more vcore. don't know, you might be at the limits for your cpu.

 

[CooLWoLF]

Since I will have some active cooling on the VRMs now, do you think i am ok to bump up the voltage if necessary to hit 4.5ghz? Or stick where i am at?

i'd get a copper heatsink on newegg... like this one. http://www.newegg.com/Product/Product.aspx?Item=N82E16835708012

then i'd play with your northbridge frequency, nb voltage and cpu/nb voltage, see if you can't stabilize your cpu at the next step without adding a lot more vcore. don't know, you might be at the limits for your cpu.

I think my cpu can go further. I can boot and play games at 4.5ghz @1.41v, its just not P85 stable. I will look into tweaking my northbridge, thanks!