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post #91 of 5036
Quote:
Originally Posted by kromar View Post
maybe i got that wrong but isnt the Turbo mode supposed to set in when a application supports no multi core to speed it up a bit?

here is what im testing at the moment, temps are a bit high since my fans are running on "low" speed so there is a bit room for more ghz:O
the bios for my board is really buggy, i cant lower the ram multi, cant turn off C&Q and some other funny things i had to figure out before i could get anything near stable....
i would like to reach 4ghz but i think it might not be possible with this bios and i have to wait for one that acctually does what it should^^

Vcore: 1.408v
NB: 1.1v
CPU-NB: 1.35v

@jj775: how do you test stability? is that 4ghz@1.39v stable or is it just a bench setting?
My voltage fluctuates, because I cant disable c"n"q. At load my voltage is 1.5v
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post #92 of 5036
Quote:
Originally Posted by jj775 View Post
=_=

You need a nice board that will do good fsb overclocking.
Try one of these http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=2010200022%201070946 434%204027&name=$75%20-%20$100
Thanks, but the link you posted doesn't show up. What board was it?
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Optical DriveCoolingCoolingCooling
LG Bluray Burner Swiftech HD Koolance MVR-100 Koolance CHC-125 
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post #93 of 5036
Quote:
Originally Posted by utnorris View Post
Thanks, but the link you posted doesn't show up. What board was it?
http://www.newegg.com/Product/Produc...$75%20-%20$100
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CPUMotherboardRAMOS
Phenom II 1055t 4ghz/3.1ghz nb 790xt ud4p 1333 Windows 7 64Bit 
Power
700watts 
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Phenom II 1055t 4ghz/3.1ghz nb 790xt ud4p 1333 Windows 7 64Bit 
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700watts 
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post #94 of 5036
how about adding the CPU-NB-VID to the chart? i think its a important value when it comes to NB clocks....
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post #95 of 5036
Thread Starter 
It's in there as vNB

Northbridge clocks made less than 1% or less difference when I benched my system 2200MHz vs. 2800MHz though
Edited by test tube - 5/8/10 at 1:28pm
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post #96 of 5036
Quote:
Originally Posted by test tube View Post
It's in there as vNB

Northbridge clocks made less than 1% or less difference when I benched my system 2200MHz vs. 2800MHz though
I have the same board as you and my cpu-nb is 1.55v.
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CPUMotherboardRAMOS
Phenom II 1055t 4ghz/3.1ghz nb 790xt ud4p 1333 Windows 7 64Bit 
Power
700watts 
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My System
(13 items)
 
  
CPUMotherboardRAMOS
Phenom II 1055t 4ghz/3.1ghz nb 790xt ud4p 1333 Windows 7 64Bit 
Power
700watts 
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post #97 of 5036
Thread Starter 
That's probably more than you need, for instance I was nearly stable at 2800MHz with 1.40v.
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post #98 of 5036
Quote:
Originally Posted by test tube View Post
That's probably more than you need, for instance I was nearly stable at 2800MHz with 1.40v.
With my last experience with the 955, i know 1.55v - 1.57v is safe and do not cause lock ups or bsod. So I set that so I do not have to be tweaking it all the time whenever i increase bus clock.

Edit: I have the 790x not fx
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Phenom II 1055t 4ghz/3.1ghz nb 790xt ud4p 1333 Windows 7 64Bit 
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My System
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post #99 of 5036
Thread Starter 
The 790X is a DDR2 board. Are you sure?

Edit: My bad, I meant XT not X or FX.
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CPUMotherboardGraphicsRAM
i7 2700K Intel DP67BG SLI 2x Zotac 570 Reference 16GB G.Skill 1600MHz / 1.25v 
Hard DriveOSMonitorKeyboard
WD 2TB / OCZ Solid3 128GB Vista Pro 7 x64 / Ubuntu 22.5" Acer LCD Dollarstore special 
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post #100 of 5036
anyone else needs to increase RAM voltage and CPU-NB-ViD when raising the FSB?
i always set the NB multi so its around 2000... i thought i would need to increase the NB voltage when i increase the FSB and not the CPU-NB to get it stable o_O
stable setting @3.8ghz:

FSB:272x14
NB freq: 1904
Vdimm: 1.7v@1450mhz (ram is rated 1.65V@1600) screen freezes with anything lower @8k fft p95 blend
NB voltage: 1.1v (1.1v stock)
CPU-NB: 1.35v (1.15v stock) anything lower will give fatal errors @1024k fft p95 blend
Vcore: 1.408v

is that normal voltage behavior or might there be an other bios problem with the voltages? o_O
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myrig
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