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In Reply to: RE: Can you test with Core i3-530 32nm + GA-H55M-UD2H? posted by cics on May 24, 2010 at 11:32:04
I did some search. Asrock and Foxcon H55M MBs appeared not suitable for the intended purpose as the voltage settings are insufficient or not low enough. MSI H55M P31 seems to be a good choice with all necessary voltage settings.
According to a MB review MSI H55M E33 performs better then its Gigabyte, Asus counterparts in overclocking. The result is indicative of the PS design and quality of the MBs.
I have asked MSI for the lowest voltage value of CPU VCore, DRAM and GPU.
Follow Ups:
Take a look at this Intel S3420GP mobo which supports Core i3-530/540. I like its simplicity and clean design. Its a bit large but there's less clutter like no onboard audio.
Sever boards are designed for high quality long running 7x24 performance. Not sure about BIOS. Intel tested this mobo with XP SP2 Pro.
For stability, Intel MBs do not usually provide low voltage setting in BIOS and may not be a good candidate for CMP^2.
With a view to improving current consumption and SQ, I tried and successfully removed the sound and network chips together with some regulators on board my GA-G31M-S2C and an older Intel MB. I found that despite the devices are being turned off in BIOS, the regulators are still running. The chips were removed by using a hot air gun and solder iron. The important thing is that after removal of the chips, the MBs boot up without any problem.
I believe the BIOS setting is crucial and I like the flexiblity and stability of the GA H55M UD2H. Next step, I will try to remove unnecessary chips from this MB.
...is it possible to take some pics and show us which chips you removed?
I support the request. It is very interesting.
See photos. Haven't got time yet to test the performace and current.
Edits: 05/31/10 05/31/10
You measured 2.34A on 5V which is surprisingly high. Would be keen to see new load after these changes?
I'm going to build a CMP machine for another friend so I bought him a H55M-S2H for my experiment. I removed everything around the sound and network Chip, including regulators and transistors. See photo.
Current Consumption decreased by about 0.1A after such removal. Capacitor leakage current should also be taken into account. The 5V is now drawing 2.25A @96K. Sound quality slightly improved.
I can go on to remove the Jmicron IDE controller but I'd better stop here as this MB belong to my friend.
Edits: 06/01/10
can you please point out where the chips are removed? hard to see.
Photo.
The optical output and an OP amp were removed.The CPU fan and System fan PS was cut off.
Edits: 06/01/10 06/01/10
Two more chips, the DVI to HDMI Convertor chips for the DVI and HMDI output, were removed from the MB, with much hardship.
Not sure about any reduction in current consumption, that's not the point. The importance lies with the good improvement in SQ brought about by the risky but worthwhile surgical operation. As you can image, two noisy video chips were severed.
The last thing left, I belive, are a regulator and the Jmicron368 IDE controller. See pix below.
Edits: 06/02/10 06/02/10 06/02/10
thank you
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