has anyone overclocked the i7 4790 (non k) and how?

[Arronleeds]

when i overclock my i7 4790, i change my base clock to 105 and put my cpu ration to 40 which makes it 4.2GHz, however it will boot first time but when i reset it my monitor doesn't respond and says "no signal found" i know my cpu isnt a k version but surely 4.2 wouldnt do any harm. do i need to change the voltage though because i wasnt and i also got told to turn my ram frequency down as that apparently overclocks too. i also turned turbo boost off when i overclocked. am i doing anything wrong.

 

[JackNaylorPE]

The 4790 boosts only via BCLK ... 105 is a bit agrressive

 

[Arronleeds]

only way i can get it to 4.2 though is by boosting it to 105 *sigh* max the ratio will go is 40 and my boost is already 4Ghz.

 

[i7Baby]

Its a locked CPU. If you try overclocking it, you'll get poor results and most likely BSODs. Buy and overclock a K series CPU if you feel you have to overclock.

 

[Arronleeds]

only reason i wanted to oc was to see if i actually could, i know its a non k version but it only cost me £190 and to me that was a bargain and saved myself £40+. i did actually manage to get it to run at 4.2 for around 15 mins before i reset it and in that time i did a firstrike score but everytime i do one for some odd reason the cpu never goes past 3.9 even though it was running at 4.2 on idle..... (because i put min processor state on 100%), dno if firstrikes stupid or what.

 

[JackNaylorPE]

I'm not saying that you can't use BCLK for overclocking, many folks do, and when the ability was 1st made known, there were many articles on it.....the results however are limited, especially on budget boards ... 103 - 104 is usually successful.... 105 is rare .... there was an article on this subject ... Guru3D I think but I can't find it. Not to be sneered at as that's about the same spread ya get from the best and worse GFX card of a given model.

 

[i7Baby]

I'd leave it be. No good can come out of trying to overclock it.

 

[Arronleeds]

i just put the cpu ratio to 40, left turbo boost on and my ram is still at 1600mhz and its running at 4.16Ghz with no problem, think thats because i left turbo boost on. i have a h55 but gonna get a h100i and next time get a bloody k model.

 

[Arronleeds]

this is what i mean guys http://www.3dmark.com/3dm/6082911?

Reported stock core clock 4,000 MHz
Maximum turbo core clock 3,800 MHz

 

[i7Baby]

i have a h55 but gonna get a h100i and next time get a bloody k model. - good idea.

 

[JackNaylorPE]

i just put the cpu ratio to 40, left turbo boost on and my ram is still at 1600mhz and its running at 4.16Ghz with no problem, think thats because i left turbo boost on. i have a h55 but gonna get a h100i and next time get a bloody k model.

Hope you live alone if ya get the H100i .... 68 dbA is louder than granny's 1950s vacuum cleaner. The DH-15 and Cryrig R1 top the H100i, Kraken 61 and even the TT Water 3.0 w/ 360mm rad. The H220-x / H240-X "flat out embarrasses them" ... and no aluminum rads, no mixed metals causing galvanic corrosion, adds a reservoir, allows you to replace components and allows you to add more rads and water blocks while the H100i is 8 - 12 times as loud

 

[Arronleeds]

im gonna get the d14 its only 60 quid, my h44 cost 40 but thats cos i worked at pcworld (full of morons who lie to customers)

 

[Arronleeds]

Do you guys know about vccin voltages ? Mines 1.792 and was wondering if that seems a tad high.

 

[JackNaylorPE]

These were my "1st weekend numbers" on my 4770k the purpose of which was to determine limits

42/42/42/XMP 2400 means 42 multiplier / 42 max cache / 42 min cache / 2400 RAM speed. I started at 42/Auto/Auto/1600 and worked me way up from there. I now use 45/42/Auto/2400 for office work .... 46/Auto/Auto/2400 for gaming and play around for shitz and giggles at 47/Auto/Auto/2400


42/42/42/XMP (2400) *
VCore 1.200
VCC Ring 1.200
VCCIN (Ev) 1.880
DRAM 1.700
Avg Max Core Temp = 59.0C (28.0C Ambient)

43/43/43/XMP (2400) *
VCore 1.225
VCC Ring 1.225
VCCIN (Ev) 1.880
DRAM 1.700
Avg Max Core Temp = 56.5C (27.4C Ambient)

44/44/44/XMP (2400) *
VCore 1.260
VCC Ring 1.260
VCCIN (Ev) 1.880
DRAM 1.700
Avg Max Core Temp = 59.0C (24.5C Ambient)

45/45/45/XMP (2400)
VCore 1.325
VCC Ring 1.325
VCCIN (Ev) 1.880
DRAM 1.700 *
Avg Max Core Temp = 63.0C (22.9C Ambient)


46/43/43/XMP (2400)
VCore 1.385
VCC Ring 1.385
VCCIN (Ev) 2.020
DRAM 1.700
Avg Max Core Temp = 69.0C (23.0C Ambient)

46/46/46/XMP (2400)
VCore 1.385
VCC Ring 1.410
VCCIN (Ev) 2.040
DRAM 1.70
Avg Max Core Temp = 72.0C (24.4C Ambient)

 

[IaMaBooZeR]

http://valid.x86.fr/6cuhbv 4790 non-k with ASUS z97-AR MB i think 4.2 Ghz is ok

The ASUS MB optimizes it nicely

 

[DubbleClick]

The trick at bclk overclocking is having patience. If you straight away increase your bclk from 100mhz to 105mhz, you will very likely have the system fail after a reboot. Instead, increase by 0.005mhz steps, reboot the system a few times and increase again.

Your voltage is quite low too, im sure with 1.2v you should get at least 4.3ghz, if not more.

 

[Arronleeds]

Yeah if I put the multiplier to 40 which is the highest it can go obvs lol, then raise the base clock I can never get it past 102.5, my pc turns on but black screens straight away

 

[DubbleClick]

Whats your vcore, vcache and alikes? Also make sure to set your pcie slot to gen 2 and run the ram at lower speed. Bclk overclocking overclocks everything, not just the cpu. And have you tried increasing in little steps?