[SOLVED] Overclocking on a locked Dell motherboard but through windows

[RocketScience420]

I have a dell optiplex 980 which i want to upgrade with rx400 or rx500 series card, so i wanted to overclock the i7 870 inside.
I know chances of overclocking on a locked dell BIOS are very low, how about through windows using the "Intel Extreme Tuning Utility".
I want to know the pros and cons of doing this, also want to know the maximum overclock speed i can achieve before crashing.
Also, don't recommend a motherboard with a unlocked BIOS since I would buy one anyway after a while, just wanted to now if my dell motherboard is worth using or not (really preferring if i can overclock on it)

Reference video:

View: https://www.youtube.com/watch?v=v2EKs02I3Oc

 

[delaro]

Cons
-Increased Heat which may overpower the limited OEM coolers.
-System-wide Instability "This is the most common issue"

Pro's
It appears to be a little faster but in reality, you don't notice much of a difference.

 

[zx128k]

If the core voltage is locked then you can't really overclock that much anyway.

 

[RocketScience420]

If we talk in numbers, how many fps increase I could get from even this small overclocking?

 

[zx128k]

If we talk in numbers, how many fps increase I could get from even this small overclocking?

I don't know.

 

[delaro]

If we talk in numbers, how many fps increase I could get from even this small overclocking?

.1 to .2 Mhz which translates to at most 1FPS and adds system-wide instability.

 

[DSzymborski]

If we talk in numbers, how many fps increase I could get from even this small overclocking?

I'd be shocked if you counted the increased FPS and you didn't still have fingers left on your first hand.

This just isn't the hardware to do what you want to do with this, motherboard or CPU. And if you're using the OEM cooler, that's also very likely inadequate for this challenge. Similarly, if you have one of the lesser Dell prebuilt PSUs (you want a Delta and not an AcBel), you may not even have a PSU that's up for this either.

 

[86zx]

If we talk in numbers, how many fps increase I could get from even this small overclocking?

Really 100-300mhz is gonna net 2ish fps you really need to push the CPUs to get real increases I overclocked a i7 920 to 3.8ghz and saw decent increases but that’s a substantial overclock.

 

[Zizo007]

You can manage a 600Mhz overclock.
You can also use SetFSB to OC but make sure you have fast RAM.
What's your PSU 12V amperages?
Keep an eye on temps so they don't go over 85C.
I had an HP Q9550 Workstation when I was a kid that I overclocked from 2.8 to 3.4Ghz using SetFSB.

 

[zx128k]

Tcase is 72.7°C TCase stands for Case Temperature and is the maximum temperature allowed at the processor Integrated Heat Spreader (IHS). As this is a cpu from 2009, if you can get 600Mhz that is good but this is a very old system. With 4 cores and 8 threads overclocking will help performance but not to a great degree. You are limited to DDR3 1066 - 1333 memory at a maximum amount of 16GB. If that could be overclocked that would be good as well but fast DDR3 memory can be expensive. I would not push a system from 2009 to the maximum.