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Dec 17, 2012, 06:44 PM
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#1 |
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Need some help with Vdroop mod
Hi guys.
I have Gigabyte GA-EP45-DS5 motherboard with ISL6336. http://www.gigabyte.com/products/pro....aspx?pid=2837 What resistor do I need to make a Vdroop pencil mod? 
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Dec 17, 2012, 07:19 PM
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#2 |
 Join Date: Apr 2005
Location: Green Bay, WI
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why mod it? That ic supports loadline calibration, should be a setting in the BIOS.
If you are set on a vdroop mod, a pencil mark will not work because the Vsense pin is connected directly to the load. you would have to utilize a 10-50k pot between GND, VCC(5v) and Offset pin (pin 10) Last edited by Hellraiser1981; Dec 17, 2012 at 07:26 PM. |
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Dec 17, 2012, 08:30 PM
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#3 | |
 
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Quote:
Despite what some say about spikes, I leave it on, because I get higher temps with it off, and I really can't use any lower voltage with it off anyway. Last edited by Frag Maniac; Dec 17, 2012 at 11:03 PM. |
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Dec 17, 2012, 08:56 PM
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#4 | |
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Unfortunately, this board does not support Load Line Calibration technology. Otherwise I would not ask...
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Dec 17, 2012, 09:22 PM
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#5 |
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I assume no updated bios is available...
First use a DMM to test pin 10 to see if it is terminated or not. (should read >10K to gnd [powered off completely]) If you do not have SMD soldering experience, Stop now!!! |
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Dec 17, 2012, 09:55 PM
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#6 |
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The datasheet:
www.intersil.com/data/fn/fn6504.pdf Use a dmm to monitor/calibrate voltage on first boot. not sure if offset is inverted or not. Calibrate wiper (center terminal) for .4 to .9 v before you solder on pin 10!! pin 18 (rgnd) would be easier to solder to gnd instead of qfp terminals What is your vdroop anyways VBIOS vs Vcpu? Last edited by Hellraiser1981; Dec 17, 2012 at 10:18 PM. |
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Dec 18, 2012, 10:42 PM
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#7 | ||
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Hellraiser1981
Thank you! I will try it. Quote:
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BIOS setup: 1.46v Idle: 1.42v Load: 1.36v So... good OC is impossible, Q6600 G0 @ 3.6 GHz is max at reasonable voltages in idle (my Q6600 example required 1.44v for stable work at 3.6.) I want more. BIOS version is latest from off website. |
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Dec 19, 2012, 03:46 AM
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#8 | |
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Quote:
Note 1.4v is kinda high and 3.6Ghz kinda extreme, be careful, the MB has a limit for a reason. What are current temps?? Last edited by Hellraiser1981; Dec 19, 2012 at 03:56 AM. |
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