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post #2661 of 3170
So here it is , Extreme 4 and 3770k.

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post #2662 of 3170
Quote:
Originally Posted by cmac68 View Post

So here it is , Extreme 4 and 3770k.


What are your settings in the OC Tweaker? I'm having trouble breaking the 4.5 threshold
 
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post #2663 of 3170
so whats this i hear about the extreme4 having crumby vrms? that include the extreme4m?
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post #2664 of 3170
Quote:
Originally Posted by TSXmike View Post

so whats this i hear about the extreme4 having crumby vrms? that include the extreme4m?

Not sure if this helps but it shows many motherboards and the quality of their vrms.

http://sinhardware.com/images/vrm.jpg
post #2665 of 3170
Quote:
Originally Posted by TSXmike View Post

so whats this i hear about the extreme4 having crumby vrms? that include the extreme4m?

Yes, Extreme4 and Extreme4-M both use D-pak mosfets which are inefficient.
Extreme4 uses an analog PWM (ISL6367), while Extreme4-M uses a digital one (L6718). Extreme4 has more mosfets (and a phase doubler) comparing to Extreme4-M, but still only 4 phases which Asrock falsely advertises as 6.

http://www.st.com/internet/analog/product/253816.jsp
http://www.intersil.com/en/products/power-management/computing-power-vrm-imvp/multiphase-controllers/ISL6367.html
Edited by glina - 2/9/13 at 8:53am
post #2666 of 3170
Quote:
Originally Posted by glina View Post

Yes, Extreme4 and Extreme4-M both use D-pak mosfets which are inefficient.
Extreme4 uses an analog PWM (ISL6367), while Extreme4-M uses a digital one (L6718). Extreme4 has more mosfets (and a phase doubler) comparing to Extreme4-M, but still only 4 phases which Asrock falsely advertises as 6.

http://www.st.com/internet/analog/product/253816.jsp
http://www.intersil.com/en/products/power-management/computing-power-vrm-imvp/multiphase-controllers/ISL6367.html


so whats that mean for the long run?

is there a discussion about this anywhere?
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post #2667 of 3170
Quote:
Originally Posted by TSXmike View Post

so whats that mean for the long run?

is there a discussion about this anywhere?

My Extreme4-M overheats with high overclocks (above 4.4g) and throttles the cpu back to stock clocks once VRM temps reach around 75C. It's capable of running 5GHz stable, but not able to supply the power in the long run. After a while under load the clocks jump between stock and OC. This is something that can be observed under IBT or Linx torture runs, but not in normal usage.

Don't know about the full size Extreme4. It should handle the power better as it has a slightly more robust vrm stage.

Otherwise, the heat is energy lost which means the board uses more power comparing to more efficient constructions. Better quality VRM designs may keep the cpu stable at lower effective voltages which in turn may lead to better max overcloclocks and/or lower temperatures.

I'd say for the average overclock on air, these boards are OK. For anything more, it's really worth it to pay extra.
post #2668 of 3170
Can someone explain how Non-K OC works? I have an i3 3225 + Z77E-ITX. I know what it is I just can't find it in the BIOS. Is it thru AXTU only?

Off topic question: clearance being a non issue (I have a Prodigy), would I gain anything (noise wise) by switching out my -current- Mega Shadow (Megahalems in black) for anything under an H1000? I have a Thermaltake WATER2.0 Performer in another build (family member's) that I could switch for it, but unless I'm OCing I think the pump noise would offset any gain. If it would be about the same I'd go for the switch, as it would allow me to use the PCIe slot.
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post #2669 of 3170
Quote:
Originally Posted by glina View Post

My Extreme4-M overheats with high overclocks (above 4.4g) and throttles the cpu back to stock clocks once VRM temps reach around 75C. It's capable of running 5GHz stable, but not able to supply the power in the long run. After a while under load the clocks jump between stock and OC. This is something that can be observed under IBT or Linx torture runs, but not in normal usage.

Don't know about the full size Extreme4. It should handle the power better as it has a slightly more robust vrm stage.

Otherwise, the heat is energy lost which means the board uses more power comparing to more efficient constructions. Better quality VRM designs may keep the cpu stable at lower effective voltages which in turn may lead to better max overcloclocks and/or lower temperatures.

I'd say for the average overclock on air, these boards are OK. For anything more, it's really worth it to pay extra.


just something to keep an eye on then.

gonna be going under water here pretty soon... wonder if there are any vrm blocks available.
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post #2670 of 3170
I can see you already have your CPU @ 4.5G. What voltage do you run?
Can you check if you get throttling?

I use HWinfo64 to monitor the cpu clocks (sensor only mode). It's best seen on a graph.
Run Intel Burn Test in High mode for 15-20minutes. First cycles will usually have consistent Gflop results (+-2Gflops). Once the throttling kicks in, the variations will be larger.
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