Overclocking using FSB instead of multiplier

timmothy

timmothy

timmothy

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Hi 8pack, thought I would ask in here as I have had no luck researching it and no luck playing around myself.

I have always used the multiplier and fsb to overclock in the past. Most recently with my q6600 which I had running at 3.6.

I have recenly purchased a 3570k and Gigabyte z68ap-D3. Now unfortunately I am unable to update the bios so that I can overclock the Ivybridge via the multiplier. So I have tried doing it with the FSB, but as soon as I put it even a little bit up it crashes the PC on boot. I put the multiplier to 38x which is max for Ivybridge on my motherboard but it only seems to actually go to 36x.

So my question really is why will the motherboard not overclock via the FSB, I am only adding 7mhz to it and its crashing. I cant seem to get any info on it as everyone seems to just up the multiplier these days to overclock.

Hope you can help
 
the motherboard will its the cpu,they arnt very flexable in bclk overclocking,its mainly done with the multiplier unlike on older boards,

why cant you update the bios for it? should be simple to do with qflash and a usb memory stick?
 
Blk of about 108 is the tops for air/water cooling. Ideally you need to update the bios to get the best out of your chip. As Wazza points out a bios update is simple via Qflash and a USB memory stick.

Remember when raising BLK you raise other Buses too such as the PCI X bus and the memory speed. Make sure while BLK clocking your memory remains as close to stock as possible using dividers to check its not memory frequency why your failing to get any further.
 
Thanks for the responses.
As for the Bios, I have to update it in a different way as it has to be updated to the UEFI bios. This has to be done via a dos bootable USB which I have done although it says when I update it that the Bios file is wrong. I go it from the Gigabyte forums as my board does not have native support for the UEFI bios which is needed to unlock the multiplier on Ivybridge CPU's.

I have tried without success to overclock the BLK by even a tiny amount. How come FSB is no longer a big thing? Why have they lowered them, as I have had my old board up to 450mhz which is almost double what the new board is.

My memory is not the problem as it is the Samsung Green and that is stable at 2130mhz
 
Previously when you raised FSB other buses on the system could be locked or partially locked.

When you raise Base Clock which generates the frequency for all the buses on a board you also raise SATA ports frequency, PCI EX frequency, USB controller frequency etc etc... These buses are more sensitive to change than the CPU its self and will cause the system not to post if they become unstable. Hence why you cant overclock BLK too high as other components are also on the BLK clock.
 
Thanks 8 pack. I prefer the old method, i liked getting the calculator out to work out what clock I wanted. Now you just x by a hundred. Any ideas how to over clock in my situation?
 
timmothy said:
Thanks 8 pack. I prefer the old method, i liked getting the calculator out to work out what clock I wanted. Now you just x by a hundred. Any ideas how to over clock in my situation?
Click to expand...

That seems to be the Intel way of doing it now, the chipset design links the blk to all the buses. with fixed multis. AMD still have a lockable PCIe bus as I have run the base clock up to 312Mhz on my ASUS 99X chipset with a lower multi than stock. It allows ram to be fine tuned as well.
Legacy or old school I know but I do like this additional flexibility. Still you move with the times and Intel have chosen this way.

Regarding the bios, have you tried the windows @BIOS utility. I used to swear never to flash a bios through windows but on my last gigabyte board this was the only certain way to do it.
 
From what I have read you cant update my boards bios via windows, all forums say that the only way to update to a UEFI bios is via a Dos bootable drive. Also there is no official file to update with, the one I have found on the Gigabyte forums is old and unofficial and not supported. I dont even know if its the right file!!

I have heard updating via Windows is risky already, with my situation it feels like I am playing with a loaded bomb.
How I wish I had done more research and bought a proper board to begin with.
 
Sell the 3570k and buy a second hand 2500k? The performance difference is very small, it shouldn't cost you anything overall and your board should overclock a sandy bridge chip.
 
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