4790k Voltage OC

[TwitchFast]

Apologies if this has already been covered, but I have overclocked my i7 4790k and would like a little clarification as to where the boundaries lie for a 24/7 overclock.

I currently run my CPU at 1.251v and would appreciate if anyone can shed some light upon safe voltages, the CPU is clocked at 4.9GHz (49x multiplier) and all appears stable on Cinema4D + AIDA64 + 3DMark

 

TLDR:  Is 1.251v safe for 24/7 use?

Much appreciated.

[Gofspar]

stick your voltage to 1.3v and see where you core takes you.

 

1.4v is where I'd say its borderline danger zone.

[Br3tt96]

If temps are fine at those volts go for it.

[shawn finkenstead]

Apologies if this has already been covered, but I have overclocked my i7 4790k and would like a little clarification as to where the boundaries lie for a 24/7 overclock.

I currently run my CPU at 1.251v and would appreciate if anyone can shed some light upon safe voltages, the CPU is clocked at 4.9GHz (49x multiplier) and all appears stable on Cinema4D + AIDA64 + 3DMark

 

TLDR:  Is 1.251v safe for 24/7 use?

Much appreciated.

Yeah. Looks like you hit the lottery. I had to use 1.29 volts to get my cpu stable at 4.9ghz. 1.37 to get it stable at 5ghz. Pretty sure the rule of thumb for 24/7 use is to stay at 1.30 or lower.

[brokencross]

Yeah, that's a pretty good voltage. Seems like you've won the lottery.

1.4v is the highest voltage before chip degradation starts.

[Lays]

Yeah, that's a pretty good voltage. Seems like you've won the lottery.

1.4v is the highest voltage before chip degradation starts.

 

Meanhwhile I've taken multiple CPU's to over 1.6v and no issues lol

 

Degradation doesn't just instantly happen in my experiences with overclocking with friends & myself, it's something that takes a long long time at very high voltages.

[Tim Drake]

PHUCK ME DAT LOTTERY WIN THO

 

Get dat shit on custom water and start benching   B)

[Br3tt96]

I haven't stress tested, but I can get 5ghz @ 1.315 v. Temps are pretty good though benchmarking... I've so far been stable 4.6ghz @ 1.2v and 4.8ghz @ 1.225v. So I'm sure I'm somewhere close to you.

[TwitchFast]

Appreciate the replies guys, I would love to take it up to 5GHz but my temps top at 80 and I'd rather not go any higher

I would totally custom loop it had I have the money as well.

 

The temps only hit 80 when I run 1.3v though.

[brokencross]

Meanhwhile I've taken multiple CPU's to over 1.6v and no issues lol

 

Degradation doesn't just instantly happen in my experiences with overclocking with friends & myself, it's something that takes a long long time at very high voltages.

Never said the degradation is instant. Intel did say that 1.4v was the max voltage recommended. 

 

 

Appreciate the replies guys, I would love to take it up to 5GHz but my temps top at 80 and I'd rather not go any higher 

I would totally custom loop it had I have the money as well.

 

The temps only hit 80 when I run 1.3v though.

What cooling solution are you using?

[Br3tt96]

Appreciate the replies guys, I would love to take it up to 5GHz but my temps top at 80 and I'd rather not go any higher

I would totally custom loop it had I have the money as well.

 

The temps only hit 80 when I run 1.3v though.

I might stress mine at that and see... When I benching it was around mid to high 60s c

[TwitchFast]

 

Never said the degradation is instant. Intel did say that 1.4v was the max voltage recommended. 

 

 

What cooling solution are you using?

 

Currently using a H320 with MX-2 paste, got three NF-F12's on the rad.

[Br3tt96]

Currently using a H320 with MX-2 paste, got three NF-F12's on the rad.

Nice man! I'll post a pic of Aida stressing at 5ghz on air in a bit

[TwitchFast]

Nice man! I'll post a pic of Aida stressing at 5ghz on air in a bit

Sounds good, that's with your rig in your sig right?

[duriel]

im at 1.170v 4.5ghz, 1.251v 4.9ghz sounds great lol

 

make sure you're actually stable, try playing games + streaming while listening to music & talking to a friend on skype etc.

i thought i was stable at 1.150v but i kept bugsplatting in league while playing & talking on skype, no bsod's or black screens though, so 1.170v made me 100% stable.

[brokencross]

Currently using a H320 with MX-2 paste, got three NF-F12's on the rad.

80º @ 1.3v seems quite high.  But then again, a good air cooling solution is much better than a clc.

[Br3tt96]

Sounds good, that's with your rig in your sig right?

Yup that's my pc specs.

[TwitchFast]

80º @ 1.3v seems quite high.  But then again, a good air cooling solution is much better than a clc.

Yeah I thought as much, though it rarely actually hit 80.

 

im at 1.170v 4.5ghz, 1.251v 4.9ghz sounds great lol

 

make sure you're actually stable, try playing games + streaming while listening to music & talking to a friend on skype etc.

i thought i was stable at 1.150v but i kept bugsplatting in league while playing & talking on skype, no bsod's or black screens though, so 1.170v made me 100% stable.

Yeah I tried messing in league and what not

Coincidentally, I managed to get it stable on 4.7GHz with no voltage increase, I suspect I was just very lucky.

[duriel]

 

Yeah I thought as much, though it rarely actually hit 80.

 

Yeah I tried messing in league and what not

Coincidentally, I managed to get it stable on 4.7GHz with no voltage increase, I suspect I was just very lucky.

 

 

what's your cpu's batch # ?

[brokencross]

 

Yeah I thought as much, though it rarely actually hit 80.

 

Yeah I tried messing in league and what not

Coincidentally, I managed to get it stable on 4.7GHz with no voltage increase, I suspect I was just very lucky.

 

You can always buy a Silver Arrow or a NH-D15. It'll give you better temps.

But yeah, you were lucky as fuck. I can only get my 4690k stable at 1.26v to get a 4.4Ghz oc.

[TwitchFast]

what's your cpu's batch # ?

L442B184

Surprised I managed to read that tbh, my CPU box arrived quite scuffed.

 

 

You can always buy a Silver Arrow or a NH-D15. It'll give you better temps.

But yeah, you were lucky as fuck. I can only get my 4690k stable at 1.26v to get a 4.4Ghz oc.

Really glad I got a decent chip, my old Phenom II X6 1100T and i5-4670k absolutely hated any clock changes, regardless of voltage.

Also, originally I thought this CPU was DOA because my Mobo was flagging the CPU as an issue. Turns out my BIOS update was retarded and that I needed to use a proprietary software from ASUS o_O It was going to be collected by a courier the next day, I nearly lost this baby >_<

[duriel]

 

L442B184

Surprised I managed to read that tbh, my CPU box arrived quite scuffed.

 

 

Really glad I got a decent chip, my old Phenom II X6 1100T and i5-4670k absolutely hated any clock changes, regardless of voltage.

 

 

weird, i think i got a chip great with undervolting at high clocks, because at max fpu stress i hit like 80c, so i'm worried about pushing more clock + voltages becoming too hard to cool.

 

my batch # is X438B278

[TwitchFast]

weird, i think i got a chip great with undervolting at high clocks, because at max fpu stress i hit like 80c, so i'm worried about pushing more clock + voltages becoming too hard to cool.

 

my batch # is X438B278

Yeah FPU is what causes my chip to hit ~80.

I'm perfectly happy with 4.9GHz though, especially after my previous experience with overclocking chips.

[duriel]

Yeah FPU is what causes my chip to hit ~80.

I'm perfectly happy with 4.9GHz though, especially after my previous experience with overclocking chips.

 

ima run my chip at your voltage/speed for a bit and see if it's stable/cool enough

 

what's your vccin/vrin at? 1.9?

[TwitchFast]

ima run my chip at your voltage/speed for a bit and see if it's stable/cool enough

 

what's your vccin/vrin at? 1.9?

I can't remember the terminology too well,

VCCIN is the CPU Input Voltage (?) at 1.824v

VRIN being Cache voltage? 1.148v

 

Different motherboards using different terminology threw me off fairly quickly.