Overclocking my i5 750.

[glocktodahead]

So I received my Noctua NH-D14 two days ago and I have to say, HOLY! It totally overshadows the intel cooler haha. I was getting temperatures of 70° with the stock cooler while running 2.7GHz. After reading a little bit about overclocking I decided to jump in. Might as well pop my cherry sometime!

I am now running 3.7Ghz with a vcore of 1.32v and my RAM is running 1850mhz with timings of 9-9-9-24. Are these settings ok? I used intel burn test and prime95 to check stability and everything is good right now. I am running 27° at idle and I barely go over 40° at full load for hours. I want to push it further today and hopefully get to 4GHz and 2000mhz on my RAM. Any pointers or suggestions would be helpful! Thanks guys!

 

[tinytomlogan]

Be a good idea if you told us exactly what kit you are using

 

[glocktodahead]

Oh yeah that would make sense lol. I'm using the ddr3-1600 G-skill ripjaws with the stock timings of 7-7-7-24 rated at 1.65v.

 

[tinytomlogan]

You wont get 2000 stable at 777 matey. Id say if you drop the timings initially to 999-24 and be ready to increase the QPI volts youll get 200x20 easy with 2000 ram.

 

[glocktodahead]

You wont get 2000 stable at 777 matey. Id say if you drop the timings initially to 999-24 and be ready to increase the QPI volts youll get 200x20 easy with 2000 ram.

Alrighty, I have the timings at 999-24 and i'll start pushing once I get back from dropping the gf at work. What is the highest vcore I can safely use do you figure?

 

[tinytomlogan]

Alrighty, I have the timings at 999-24 and i'll start pushing once I get back from dropping the gf at work. What is the highest vcore I can safely use do you figure?

BTW its IMC volts in i5 not qpi.

Tbh dude it really depends on your temps, and you should NOT just chuck a voltage in and leave it, you need to work out the lowest volts it needs to be stable. I wouldnt go much over 1.35v though on the CPU tbh just remember volts = heat

 

[glocktodahead]

Well I tried for it last night but only managed to get to 3.8ghz stable. I'm running these settings:

1.35625v vcore

IMC - 1.4v

PLL - 1.9v

DRAM - 6.5v

timings on the ram are 9-9-9-24

I tried to push to 4ghz and I just can't seem to get it stable. I tried upping all the voltages to no avail. I don't wanna screw with something too much so I decided to come back and ask for any help.

 

[tinytomlogan]

Well I tried for it last night but only managed to get to 3.8ghz stable. I'm running these settings:

1.35625v vcore

IMC - 1.4v

PLL - 1.9v

DRAM - 6.5v

timings on the ram are 9-9-9-24

I tried to push to 4ghz and I just can't seem to get it stable. I tried upping all the voltages to no avail. I don't wanna screw with something too much so I decided to come back and ask for any help.

You may find your cpu wont want to go higher, try getting 200x20 stable with 1600mem as that will put less stress on the IMC and youll be able to work out if its the CPU or not.

much further north of 1.35v you need to think if its really worth the heat on your cpu though fella.

 

[glocktodahead]

Well just to see if I could actually accomplish it, I finally got my 4Ghz with 2000mhz RAM @ 999-24. These are my settings:

143750 vcore - I went lower but it wasn't stable after a proper prime95

1.4 IMC

1.9 PLL

1.15 PCH

I run 31°C idle and i'm at 64°C Load after 5 hours of prime. How are these temperatures? If I were to leave these settings would I be ok or will my computer burst into flames killing me and destroying all of the surroundings?

 

[tinytomlogan]

1.43 means the chips not great tbh but the temps are ok tbh. God bless noctua eh

Its not going to burst into flames but it wont live for ever. Unless your planning on keeping it longer than a few years youll be fine.

 

[glocktodahead]

Well I bought the noctua based on your review alone. Definitely was worth every penny. Yeah i'll upgrade before it dies for sure, thanks for all the help, you're the man!