| Re: Motherboards......Again [message #431634 is a reply to message #430402] |
Sun, 27 June 2010 23:39   |
_SSnipe_
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Ya reading up, some say they increase FBS and lower multiplier
and other say the opposite, but reading some test say not much difference except higher FBS means higher volts means higher temps
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| Re: Motherboards......Again [message #431647 is a reply to message #430402] |
Mon, 28 June 2010 03:17 |
_SSnipe_
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Sorry for third post but what I learned so far is
HT/FSB x Mulitipler = Core clock speed (GHZ)
(AMD) HT = FSB
NB = North bridge = FSB ( They are interchangeable (even though the FSB is actually the system bus, which is the basis for all clock speeds to include CPU, RAM PCI etc...))
Over clock Two Ways: Lower CPU Freq and raise mulitiplier, or raise freq and lower mulitiplier
Freq raised = higher voltages = higher temps
NB speed is cpu "reference speed x NB multiplier"
i found out that asrock oc tuner program I took a SS is only changes the OC settings when pc boots, its separate from BIOS
so im not using it, since some reason in bios i can only change multiplier thats what i did, I saw something (forgot name but was like HT speed freq) idk if its the FSB but im not taking any chances the settings are to high of OC for me, so I rather just use the multiplier =]
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| Re: Motherboards......Again [message #431762 is a reply to message #430402] |
Wed, 30 June 2010 21:55 |
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nikki6ixx
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Registered: August 2007
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I decided to play around with my 955 for a bit today. I upped the multiplier to 19.5, and set my CPU voltage to 1.5. So that's 3.9GHz, and it ran 'stable' in Prime95 for a half hour or so; I wouldn't call that totally stable unless it ran for about 6 hours, though.
My CPU has C2 stepping, so getting it to 4.0GHz is pretty tough. Your 955 may have C3 stepping and those are able to surpass that barrier more easily. Chances are, a C3 CPU may need less voltage to get to the same spot as mine has.
Renegade:
| Aircraftkiller wrote on Fri, 10 January 2014 16:56 |
The only game where everyone competes to be an e-janitor.
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| Re: Motherboards......Again [message #431765 is a reply to message #431762] |
Wed, 30 June 2010 23:14 |
_SSnipe_
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| nikki6ixx wrote on Wed, 30 June 2010 21:55 |
I decided to play around with my 955 for a bit today. I upped the multiplier to 19.5, and set my CPU voltage to 1.5. So that's 3.9GHz, and it ran 'stable' in Prime95 for a half hour or so; I wouldn't call that totally stable unless it ran for about 6 hours, though.
My CPU has C2 stepping, so getting it to 4.0GHz is pretty tough. Your 955 may have C3 stepping and those are able to surpass that barrier more easily. Chances are, a C3 CPU may need less voltage to get to the same spot as mine has.
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why voltage so high? im at 3.6 with only one voltage setting up lol
i took alot of overclocking questions here =]
http://www.overclockers.com/forums/showthread.php?p=6536190#post6536190
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| Re: Motherboards......Again [message #431768 is a reply to message #430402] |
Thu, 01 July 2010 00:20 |
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nikki6ixx
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Registered: August 2007
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955 CPU's like mine have 'C2' stepping so they require a lot of voltage to get something decent. Yours is likely 'C3' because it's newer, and those overclock really well with little voltage. I recall a new six core Phenom needing only about 1.4 volts to hit the same speed.
And, the 890FX chipset seems to be better at overclocking than the 790 too. Lucky you! 
Thanks for the link to the thread! Lots of helpful stuff in there.
Renegade:
| Aircraftkiller wrote on Fri, 10 January 2014 16:56 |
The only game where everyone competes to be an e-janitor.
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[Updated on: Thu, 01 July 2010 00:22] Report message to a moderator |
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| Re: Motherboards......Again [message #431792 is a reply to message #430402] |
Thu, 01 July 2010 11:41 |
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nikki6ixx
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Registered: August 2007
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If it's BSOD'ing on Prime95, then chances are there isn't enough voltage going to the CPU. You need to up the CPU voltage a bit in order to make it stable.
If you don't want to add more voltage then you need to either turn down the multiplier a bit, or take a chance with a system that isn't 100% stable. If you keep your current settings and play a game, you may crash.
Renegade:
| Aircraftkiller wrote on Fri, 10 January 2014 16:56 |
The only game where everyone competes to be an e-janitor.
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| Re: Motherboards......Again [message #431797 is a reply to message #431792] |
Thu, 01 July 2010 12:16 |
_SSnipe_
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| nikki6ixx wrote on Thu, 01 July 2010 11:41 |
If it's BSOD'ing on Prime95, then chances are there isn't enough voltage going to the CPU. You need to up the CPU voltage a bit in order to make it stable.
If you don't want to add more voltage then you need to either turn down the multiplier a bit, or take a chance with a system that isn't 100% stable. If you keep your current settings and play a game, you may crash.
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I set cpu volts to 1.350 and ram to 1.535 (which on both is 2 levels higher than default) and still crashed, the FSB:dram ratio i belive was same as when not over clocked, mem was 6xx mhz which was 1333 , not over clocking it, and nothing else besides the voltage and multiplier as changed and yet still crashed on occt and prime, so i may give up lol
[Updated on: Thu, 01 July 2010 13:01] Report message to a moderator |
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