Is it safe to overclock an i5 4670 non K?

[AuroraHD]

I've heard non k versions are limited, but is possible. Is 400 MHz really the max the non k versions can go?
I've set my voltages to auto so my bios can decide it. Is this safe to switch it to?
Lastly, there's a minimum and maximum CPU cache. The minimum should be auto, right? And the maximum is my desired clock speed(ex. 4.0) or is it 4000? Do I leave turbo boost on or off?
Specs:
Motherboard: ASUS Gryphon Z87
CPU: I5 4670
CPU COOLER: Arctic cooler GT rev 2.0 (upgrading to hyper 212 EVO)
GPU: GTX 760
RAM: 16GB Samsung 1333mhz

 

[dandn0ten]

it cant be overclock only ones with K can however you can use turbo boost though

 

[Rationale]

There shouldn't be a reason to OC. The i5-4670 is capable of easily holding 60 fps in any game on ultra. If you're getting unsatisfactory performance, it's another part, like your video card.

 

[AuroraHD]

I just want some extra juice from my CPU . I got a gtx 760 and it's fine, but I wanna have more fps while I'm at it

 

[AuroraHD]

Also, how cold does the CPU need to be for turbo boost to work? I've seen it, but it jumps from 3.4 to 3.98 the comes back down, and it won't go stable, so on bf3, the frames go to 70-100 changing constantly

 

[bicycle_repair_man]

With an Intel non-k CPU, you can only overclock up to the Turbo Boost speed. You already have a compatible motherboard and good CPU cooler, so there are no problems there.

Make sure you do the changes in the BIOS. Once you adjust the multiplier, make sure you disable Turbo Boost and leave EIST enabled. EIST will ensure that your processor doesn't run at its highest speed all the time.

You can adjust the CPU voltage (VCORE) which will help bring the temperature down. Considering that you're only increasing the clock speed by 400Mhz and you have a good CPU cooler, it's not necessary.

 

[AuroraHD]

I thought the non k has a locked multiplier? And the eist thing acts like turbo boost right? Like it doesn't use (ex. 4.0ghz) all the time? Also I plan on going beyond 400 MHz. I just heard it was the max, is this true?

 

[bicycle_repair_man]

As the CPU has Turbo Boost the multiplier should be adjustable, just not as much as if it were unlocked. Pushing a locked multiplier to anything beyond its Turbo Boost speed is dangerous territory, so tread carefully.

EIST is essentially Turbo Boost in reverse. Rather than ramp up the clock speed for intensive tasks, EIST lowers it for mundane ones.

 

[AuroraHD]

Ok, I'll try today. Should I put voltage to auto? Or should I set it myself? Also, what's the maximum clock speed that I can go?

 

[bicycle_repair_man]

Keep to the Turbo Boost speed, you can go higher if you want but you run the risk of damaging not only the CPU, but the other components as well. You can leave the voltage on auto for now and experiment with it once you've established that the overclock is stable.

 

[AuroraHD]

So I shouldn't overclock it? Is it normal for turbo boost to randomly change clock speeds instead of maintaining constant max turbo boost?

 

[bicycle_repair_man]

You can overclock, just don't go any higher than the Turbo Boost speed (3.8Ghz). Also make sure that once you've changed the CPU multiplier you disable Turbo Boost.

So, what you'll end up with is a 3.8Ghz overclock with EIST to dial-down the clock speed when necessary.

 

[AuroraHD]

Alright. What happens if my system won't load windows? I've had this happen to me before, I just hard shutdown my computer twice and it told me that CPU had unstable voltages. And I can just leave core voltage to auto in bios is okay right?

 

[bicycle_repair_man]

If you start to experience any signs of instability, you would normally either raise the CPU voltage or lower the overclock. In your case, as you're not exceeding the Turbo Boost speed, you should be able to leave the voltage on auto. You're not pushing the CPU past a clock speed that it wasn't designed to run at, so manual voltage isn't necessary unless you want to bring the temperature down.

 

[AuroraHD]

Okay, well my bios doesn't quite have a multiplier, instead it has CPU core ratio. I set it to "sync all cores" and typed in 3800

 

[AuroraHD]

Ok, now my CPU stays at 3.4 ghz while playing Minecraft, GTA 4

 

[AuroraHD]

It stays at 3.4 ghz but reached 70 Celsius playing GTA 4. Is RealTemp not showing my actual CPU speed?

 

[AuroraHD]

Ok, so I went back into the bios, it seems that turbo boost MUST be on for CPU core ratio to be 3.8 ghz. (Or else it'll just won't let me do it) Is something wrong?

 

[unknownofprob]

For starters, your CPU isn't meant for OC, but it does have a small OC option (From memory 0.5Ghz max if your lucky, otherwise it won't work.).

 

[Y0GI]

Ok, so I went back into the bios, it seems that turbo boost MUST be on for CPU core ratio to be 3.8 ghz. (Or else it'll just won't let me do it) Is something wrong?

That sounds normal to me.
Will it then boot into Windows OK w/Turbo and 3.8?
What speed does CPU-Z show while under load?

Yogi

 

[AuroraHD]

I haven't checked yet. But I'll post back updates soon.

 

[AuroraHD]

I'm going to try today. If I sync all cores to 3.8 ghz and leave turbo boost on, will it have 3.8 constant?

 

[Y0GI]

I'm going to try today. If I sync all cores to 3.8 ghz and leave turbo boost on, will it have 3.8 constant?

If it doesn't, then go into Windows Advanced Power Options and select "High Performance".

Yogi

 

[AuroraHD]

It works . Although, its idling at 50 celcius average, so I gotta get me a hyper 212 evo

 

[Y0GI]

It works . Although, its idling at 50 celcius average, so I gotta get me a hyper 212 evo

Congrats! Glad that you got it working.

Yogi