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***Intel i7 4790K Owners thread***

Using a Gigabyte Z97X-Gaming G1, so things will be a bit different but translatable.

I'm trying to wrap my head around Uncore, VRIN and other stuff, there is a lot of reading to be done!
 
Thanks Neil,

I did find this last night but I didn't have a great deal of time to read it in depth. The post is now printed and will be absorbed this evening.

Really aiming for 4.7GHz, especially as my mate has one of the "top 10%" chips with crazy OC's at low volts, I've got to get close.
 
QlimaxUK said:
anyone underclocked for the summer?

Got mine running 4 GHz flat, turbo disabled, CPU Fan = 2.5 per C in BIOS (max variable setting)

SYSFAN 1 and 2 set to Full Speed Fixed 1214 RPM (front in and top out)
SYSFAN 3 (back exhaust) no control as its 4 pin molex

running 66c under load most days
Went to 72c on 'the hottest day'

HT still enabled don't really want to turn this off as it would technically make the CPU an i5 :)


anything else I could do?
Click to expand...

Get a better cooler? Your temps can't be that bad to need to underclock?

I have a tiny case in a room that gets very hot in the summer and I wouldn't even underclock.

Throttling then yes but only until I'd sorted out what was causing it.
 
:mad::mad::mad:

Had the computer on all day playing games, internet usage and it decides to completely lock up while using teamspeak and downloading skyrim mods!

Time to adjust core voltage from 1.325v to 1.333v and VCCIN from 1.2002v to 1.2012v :(

( 1.344v registered in stress test )
 
Thanks Neil79 - much appreciated. What I'm still not sure of, however, is whether the 0.688v differential between CPU Input voltage and Vcore is ok or not. But then again, the author of the piece also doesn't stick to his/her own 0.5v differential rule:

For one, keep your Vccin or total CPU voltage to 0.5v above Vcore. You can try 1.9 or 2.0v. 2.2 is uncharted territory, but for my personal overclock, a Vcore of 1.42 required Vccin of 2.15v for stability.
Click to expand...

So I will assume it's ok ?

Thanks again
 
Setter, having trouble, just had a complete system shut down :(

It's passing stress testing but playing up

- It's only crashing in windows! Low voltage issue?
 
Last edited:
Thought i'd ask in here first before i start another thread

I've got a Z87 Asus Impact on the latest BIOS, 3 days ago i got a 4790K and swapped CPU's but the system wont boot, the Red LED for CPU comes on as soon as i switch it on!

Does this mean my CPU is DOA?
 
mrkambo said:
Thought i'd ask in here first before i start another thread

I've got a Z87 Asus Impact on the latest BIOS, 3 days ago i got a 4790K and swapped CPU's but the system wont boot, the Red LED for CPU comes on as soon as i switch it on!

Does this mean my CPU is DOA?
Click to expand...

Remove CPU and check pins on motherboard, had a similar issue, turned out some thermal paste had got on to one of the pins, cleaned it off and good to go.
 
mrkambo said:
Thought i'd ask in here first before i start another thread

I've got a Z87 Asus Impact on the latest BIOS, 3 days ago i got a 4790K and swapped CPU's but the system wont boot, the Red LED for CPU comes on as soon as i switch it on!

Does this mean my CPU is DOA?
Click to expand...

Have you reset the CMOS? I had a similar issue and i done that and it was all fine.

Neil79 said:
Setter, having trouble, just had a complete system shut down :(

It's passing stress testing but playing up

- It's only crashing in windows! Low voltage issue?
Click to expand...

Just give up :D

Leave it at 4.6, just wack the vcore up for benching and you'll be stable :D
 
savagesam117 said:
Have you reset the CMOS? I had a similar issue and i done that and it was all fine.

Just give up :D

Leave it at 4.6, just wack the vcore up for benching and you'll be stable :D
Click to expand...

I think I've hit a snag, and it may be what's causing the crashing

My core clocks are now Dynamic (Set this just now), which means they drop to 800mhz and then go up to 4600mhz when needed. However here's the issue, when it was crashing it was only during windows usage not gaming.

The voltages are currently at 0.123V even if it goes up in clocks!

Setting a fixed core ratio, it stays at 4600mhz in Windows, but the voltages are at 0.324V which just isn't right
 
CEUOTC said:
Remove CPU and check pins on motherboard, had a similar issue, turned out some thermal paste had got on to one of the pins, cleaned it off and good to go.
Click to expand...

I've checked the socket very carefully, everything seems to be in order, it's been about 2 weeks since I pulled the 4770K out of it, but the mobo went straight back in the box with the CPU socket cover and everything

savagesam117 said:
Have you reset the CMOS? I had a similar issue and i done that and it was all fine.
Click to expand...

Yeah bios has been reset atleast 9000 times, even left the battery out overnight!

I was thinking about getting another mobo just to test the CPU, unfortunately I don't have anything 1150 laying around!
 
Case and point

sobgo3.jpg
 
I use fixed voltage myself, but on the board in sig I've had to up the SA, IOA and IOD voltages to 1.200. Any lower and I get crashes/freezing.
 
hyperseven said:
thought cpuz was inaccurate for vcore? do you not have any mobo manufacturer utils to read off voltages or try hwinfo.
Click to expand...

It's not far off actually, OCCT says the same as does AIDA 64

setter said:
I use fixed voltage myself, but on the board in sig I've had to up the SA, IOA and IOD voltages to 1.200. Any lower and I get crashes/freezing.
Click to expand...

Yep, that's what I'm not doing using a fixed voltage. So it's doing 4700mhz in windows at 0.552v, only going up if you stress it or play a game. What's your settings for a fixed voltage? Is it for example doing max volts now?
 
On my board, the options for voltage are, auto, manual, offset and adaptive. Are the terms labeled different on msi?
 
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