Black screen after OC 4770K

blckor · Feb 27, 2016

Hello,

Tried overclocking my 4770K '( only cpu, not my ram) and when I booted, I got a black screen, while my pc was still running.

I took out the mobo battery for a few minutes and it reset fine, but now i'm wondering what I could've done wrong.
I used this guide ( without changing any ram settings, like i said).

My rig:
4770K
Win 8.1
8gb 1333mhz ram
R9 290 TRI-x 4G

Thanks!

dylanestrada · Feb 27, 2016

You need RAM that can operate at a higher speed, or you can change your RAM timings, make them a little bit slower.

blckor · Feb 27, 2016

dylanestrada :

Hi, thanks for your reply.

Ive been googling but cant really find any elaboration about your explanation. Can you provide a link so I can read up?

dylanestrada · Feb 27, 2016

Haswell has its limits.

http://www.overclockers.com/3step-guide-to-overclock-intel-haswell/

blckor · Feb 27, 2016

dylanestrada :

thanks, i'll read up. I found the following, saying ocing an intel cpu doesnt depend on ram ( anymore) : http://www.tomshardware.co.uk/answers/id-1812109/ram-higher-frequency-sufficient.html

dylanestrada · Feb 27, 2016

Your article confirms what I've been saying...

blckor · Feb 27, 2016

dylanestrada :

The 'best solution' says you don't need faster ram when oc'ing a cpu anymore. It says higher ram speeds may negatively impact the oc, even!

dylanestrada · Feb 27, 2016

It says you must choose when overclocking your CPU, you can either overclock your CPU at a high speed at the sacrifice of RAM speed, or overclock your RAM at the sacrifice of CPU speed (there is an inverse relationship)

You have yet to list which RAM you are using as well. You probably have really bad RAM.

blckor · Feb 27, 2016

dylanestrada :

I have two Corsair ValueSelect 4GB DDR3-1333 CL9

Should be good enough to at least overclock that 4770k a little, right?

dylanestrada · Feb 27, 2016

Looking at reviews for this set, "cheap" and "simple" are two very common adjectives used.

This ram isn't rated to run any faster than 1333 mhz, so I don't think you can expect this set to be good for any kind of profitable overclocking.

dylanestrada · Feb 27, 2016

Test were actually run here, describing the loss in performance with Haswell while using RAM rated to run no more than 1600 mhz.

http://www.corsair.com/en-us/blog/2014/march/haswellrealworld

dylanestrada · Feb 27, 2016

Actually, strike everything I've just said.

I didn't even think of this, but it's essentially the first law of overclocking: increase your voltage!

What do you have v-core at?

blckor · Feb 28, 2016

My cpu core voltage is set to auto ( 1.080v) is that what you mean?
thats non overclocked

In CPU-z my core voltage is running between 0.200 and 0.900. Not sure what to make of it

dylanestrada · Feb 28, 2016

I believe when its set to auto that your v-core should ramp up when you need it to.

You can set it to manual mode and adjust it to somewhere below 1.3 to start off, it should be safe. That should allow you to keep your overclock stable.

blckor · Feb 29, 2016

dylanestrada :

Tried this, and thats working fine. Thanks. I will look into further OC later on : >

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Black screen after OC 4770K

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