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From 4 to 2 Dimms - WHAT A Difference!! - Page 2

post #11 of 15
Thread Starter 
Quote:
Originally Posted by Starbomba View Post
I know, i know. This is actually my best i3 OC with 4 RAM sticks. After changing them all for 2x4 GB sticks (i refused to give up my 8 GB RAM), you can check the new ones on my sig. Quite the change
Even 4.1GHz was quite impressive, regardless the amount of dimms installed. But hitting 4.4 just comes to show you how much of an impact less dimms will make. Great job!
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post #12 of 15
Hell, i could've stabilized ~4.5 GHz (190x24) if i wished, but i did not want to go over 70c in full BOINC load, and i did not wanted to have over 1.375v in vcore. i3's, as they are dual cores, tend to reach higher speeds than i5's, but 4 true cores do work better in CPU-intensive apps.

Plus, the main change was VTT. While massively OCing the QPI, keeping same amount of RAM but in 2 sticks less, i was able to lower it from 1.325v to 1.250v.
X79 The Hydra
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X79 The Hydra
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i865G Chronos
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post #13 of 15
Thread Starter 
Quote:
Originally Posted by Starbomba View Post
Hell, i could've stabilized ~4.5 GHz (190x24) if i wished, but i did not want to go over 70c in full BOINC load, and i did not wanted to have over 1.375v in vcore. i3's, as they are dual cores, tend to reach higher speeds than i5's, but 4 true cores do work better in CPU-intensive apps.

Plus, the main change was VTT. While massively OCing the QPI, keeping same amount of RAM but in 2 sticks less, i was able to lower it from 1.325v to 1.250v.
Yeah, after reading over in Anandtech that they killed a QX9650 by having the VTT set too high, being able to lower it is a great relief.
My System
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CPUMotherboardGraphicsRAM
i5 760 3.6GHz 1.24v Gigabyte P55A-UD3 XFX 9800GT 8GB G.Skill ECO 
Hard DriveOptical DriveOSMonitor
2x1TB Samsung F3 LG CD/DVD OSX 10.7.1 LG 23" 
PowerCase
Corsair HX620 Antec 900 
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My System
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CPUMotherboardGraphicsRAM
i5 760 3.6GHz 1.24v Gigabyte P55A-UD3 XFX 9800GT 8GB G.Skill ECO 
Hard DriveOptical DriveOSMonitor
2x1TB Samsung F3 LG CD/DVD OSX 10.7.1 LG 23" 
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Corsair HX620 Antec 900 
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post #14 of 15
Thread Starter 
Update - I found out I can run 3.6GHz at 1.24v, so that will likely be my 24/7 freq.

Now here's the odd thing,

After I got everything the way I wanted, saved the bios, and turned off the machine, I decided to try and add the other 2 dimms I had taken out earlier.

And to my surprise, it booted up no problem. Now I've been running Prime95 for about 8 hours, and it's looking strong! How do you explain that??

Before with 4 dimms I couldn't even boot at these settings. Now it's running Prime for hours on end??
My System
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i5 760 3.6GHz 1.24v Gigabyte P55A-UD3 XFX 9800GT 8GB G.Skill ECO 
Hard DriveOptical DriveOSMonitor
2x1TB Samsung F3 LG CD/DVD OSX 10.7.1 LG 23" 
PowerCase
Corsair HX620 Antec 900 
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My System
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CPUMotherboardGraphicsRAM
i5 760 3.6GHz 1.24v Gigabyte P55A-UD3 XFX 9800GT 8GB G.Skill ECO 
Hard DriveOptical DriveOSMonitor
2x1TB Samsung F3 LG CD/DVD OSX 10.7.1 LG 23" 
PowerCase
Corsair HX620 Antec 900 
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post #15 of 15
I had to up the voltage on VCCSA slightly in addition to upping VTT/vccio to get my O/C stable with 4 DIMMS. Just upping VTT didn't help by itself.
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Crucial M4 512GB, 4xWDRE4 1TB RAID10 OCZ60GB Cache LG BH10 Bluray Writer Win7 x64 GPT Dell U2711 + Samsung 2232BW 
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