i7 3820 OC question?

[JaKalakn]

Hi Guys
Got my rig OC to the Rampage IV Preset "Gamers OC (4.6Mhz)"
My CPU only seems to get 4.3Mhz tops under stress test.

What could be the reson for this?


CPU: Intel Core i7-3820 3.6GHz LGA2011 10MB 130W
Motherboard: Rampage IV Formula Intel® X79
MEM: Corsair 16GB (4x4GB) DDR3 1866MHz / PC3-15000 CL9 DIMM 240-Pin DOMINATOR GT
GPU: XFX ATI Radeon 7970 HD DD 1000MHz 3GB PCI Express 3.0 HDMI Black Edition
SSD: Corsair 120GB Force Series 3 SATA 6Gb/s 2.5" Solid State Drive
PSU: Corsair 1200 Watt Pro Series AX1200
CPU Cooler: Corsair Memory Cooling Hydro Series H100 High-Performance
Case: Corsair Carbide Series 500R
OS: Windows 7 Ultimate Edition 64bit

 

[White_Pawn]

presets don't mess with straps. The 3820 is a locked cpu, so it can only do 4 multis higher than the default turbo boost. However,this is only for 1 core.

To overclock the 3820, you have to mess with the BCLK and strap ratios. Generally people can hit 4.5-4.7ghz with some effort. You'd have to use the 1.25x cpu strap. BCLK usually walls up at around ~150.

edit: when you manually overclock, you need to disable turbo boot and eist. You should be able to select a 42x multi i believe.

 

[JaKalakn]

Thanks man... that should be a big help... gonna try it out tonight. If I can hit a stable 4.6Mhz Ill be happy. Most guys seem to think a stable BCLK is 125 on my MOBO.... think I might try stick to that and push it up a bit If I need to.

 

[Randyman...]

The 125MHz Strap does the trick over here - I bumped it to 126.5MHz - so at 38x Multi I'm running 4.8GHz stable @ 1.35v and under 70*C at full load! I got it to POST @ 5GHz, but I didn't want to crank the voltage too much higher just to get a succsessful 5GHz benchmark (I'm sure I could).

Fastest system I've built to date - hands down...

 

[turbobooster196]

The 125MHz Strap does the trick over here - I bumped it to 126.5MHz - so at 38x Multi I'm running 4.8GHz stable @ 1.35v and under 70*C at full load! I got it to POST @ 5GHz, but I didn't want to crank the voltage too much higher just to get a succsessful 5GHz benchmark (I'm sure I could).

Fastest system I've built to date - hands down...

easy to say, show it please that you are stable at 1.35v at 4.8

 

[EarthDog]

This thread is well over two years old turbo...

 

[turbobooster196]

oja damm sorry