Can I Overclock My 4460 Even Though It's Locked?
- Thread starter Lam1080p
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10tacle
Splendid
- Dec 6, 2008
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You can, but it's not like what you think. Overclocking a CPU can be done two ways: up the multiplier or (and) up the BCLK (front side bus speed). The non-K chips have the multiplier locked down, so the only way you can overclock is by changing the BCLK, which is 100Hz by default.
So for example if your chip runs at 3.2GHz, that means the multiplier is at 32 (32x100MHz=3.2GHz). The only thing you can do is up that BCLK to maybe 105. However, that would at best only get you 3.36GHz. And a BCLK that high would be pushing it since it also affects the speed of the memory and PCIe bus lanes. I've pushed mine to 103MHz experimenting and it ran fine. There's a reason the K-series chips cost more. Also you need a more expensive Z-series motherboard instead of less expensive H-series.
So for example if your chip runs at 3.2GHz, that means the multiplier is at 32 (32x100MHz=3.2GHz). The only thing you can do is up that BCLK to maybe 105. However, that would at best only get you 3.36GHz. And a BCLK that high would be pushing it since it also affects the speed of the memory and PCIe bus lanes. I've pushed mine to 103MHz experimenting and it ran fine. There's a reason the K-series chips cost more. Also you need a more expensive Z-series motherboard instead of less expensive H-series.
you can overclock by increasing the BCLK but it's not like in the old days where the PCie clock etc was independend. if you increase the BCLK 1Mhz the CPU will overclock for a few Mhz but so will the PCie clock and if you raise it too high you'll either damage your motherboard or your GPU, if not both. i think 102-103MHz is safe but I wouldn't take the risk for, i don't know, 100MHz overclocking on the CPU
- May 27, 2010
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I understand that Windows 10 hates BCLK overclocking as well. Causes all sorts of stability problems with software.
Early versions of Windows 8 had their clocks (as in the time) get out of sync due to it as well. That can have all kinds of consequences.
Early versions of Windows 8 had their clocks (as in the time) get out of sync due to it as well. That can have all kinds of consequences.
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