AMD 6670 overclocking problem BSOD!

You have found the limit of the card! Just leave it as is!

but on AMD CCC it shows that i can MAX overclock it to GPU clock= 900mhz and memeory =1150

Are you using AMD Overdrive to O.C.?

You've reached the max freq that the stock voltage will support.If you want to get higher clocks you will need to increase the voltage.

Which 6670 are you using?

Edit jumped to wrong post!

yes i am using the amd Overdrive
this is the card im using
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
to increase the voltage i have to go to BIOS?

Alright make sure you keep an eye on your temps.

No.Their are no BIOS features for GPU's.Your going to have to download MSI Afterburner.

i have the MSI after burner but i cannot increase the core voltage it's locked

You have to go into the settings within MSI Afterburner to unlock the voltage control.

Also I should let you know that you should be careful while messing around with these settings.If you don't know what your doing you can cause damage to the card.Always watch your temps and don't exceed 80c.And don't increase the voltage a whole lot.Just a very small amount at a time.You should download a stress testing program as well to test if what speed you have it at is stable.

I think you will be happier by just replacing the card with a higher performing card. Overclocks are fine just as long as voltage is kept reasonable. I personally only do overclock as high as I can on std voltage.

still locked even after unlocking the voltage core.

Your supposed to reboot after you've unlocked it.

nope still locked
i wonder if it's the GPU clock or memory clock causing BSOD

I'ts BSOD because it's not stable.You either need to reduce the clocks or increase the voltage.

is there a way to increase the voltage through BIOS?

No.

Are you sure you unlocked the voltage control? Make sure you have the latest drivers for your 6670 and the latest version of MSI Afterburner.

yes but it will not unlock, i did restart but still can't. i have the latest drivers.
maybe i cant because my card is powered by the motherboard?

That doesn't make sense.Every card is powered by the motherboard.

It is possible that either your card isn't supported by MSI Afterburner or the voltage is locked from within the BIOS(which is impossible to fix).

Actually I just found something that might help you.I totally forgot you have to edit some settings in the MSI Afterburner file.



Tell me if that works for you

meaning my card doesn't have a 6pin connector

The PCI-Express slot is good for 75 watts.I have yet to find something that says how much an OC would consume but usually when the card doesn't have enough power it will downclock itself which you aren't experiencing.

http://www.techpowerup.com/reviews/Powercolor/HD_6670/3...


Did you try what I said in my previous post?

still couldn't , there must be something wrong i can't even change the rpm of the fan. all locked except GPU clock and memory

MSI Afterburner probably doesn't support it then.

do you think changing power plans from balanced to high performance can get rid of the problem?
not at home atm.

That might help.

When I'm overclocking I always turn off any type of power saving function.

You can change the voltage through the GPU Bios, but I highly recommend NOT doing that.

When OCing a GPU, take it 1 step at a time. Do not increase Core and Memory speeds at the same time. Start with memory and increase it 5mhz at a time (with the Core at stock settings). You already know how high you cannot go, so perhaps start decreasing from there. I would think the Memory is causing the BSODs, but it may be the Core.

Anyway, when you reach the stable limit of Memory speed, then increase the Core speed in the same fashion.

As stated, just because CCC has higher speeds "available" doesn't mean they are reachable. You are only guaranteed that the card can work at stock speeds, anything higher takes patience to figure out.

Anyway, a 6670 is a pretty low end card. You'd do a lot better just getting a 5770/6770 (same card) or 6790 (or anything more expensive than those lol)

Really, you can adjust the GPU Voltage in the BIOS? What setting is it usually called?

I've seen voltage adjustments for the PCI-E lane or controller but not the card itself.

I don't mean the mobo BIOS, but the GPU BIOS (aka VBIOS). You need to use Radeon Bios Editor (RBE) which can be downloaded from Techpowerup.com.

However, it's entirely possible that the 6670 VRMs simply can't output a different voltage, but for cards that are able to, you can do it through the VBIOS. Of course this means you then have to reflash the GPU with the new BIOS which is always a bit of a risk.

Again, highly NOT recommended!

Yah, flashing a GPU is much more risky than flashing a motherboard.Their is no reset switch on GPU BIOS if you mess up so if anything goes wrong you can't use the card anymore.