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Discussion Starter #1
The current system settings are;

CPU Ratio Setting - 20X
Intel (R) SpeedStep (TM) Tech - Disabled
BCLK Frequency - 181
PCIE Fequency - 100
DRAM Frequency - DDR3 - 1451MHz
DRAM CAS# Latency - 8 DRAM Clock
DRAM RAS# to CAS# Delay - 8 DRAM Clock
DRAM RAS# PRE Time - 8 DRAM Clock
DRAM RAS# ACT Time - 24 DRAM Clock
CPU Voltage 1.20000v
DRAM Bus Voltage - 1.66v
Load-Line Calibration - Enabled

Getting 3.6 Ghz atm, and running prime for past 15 mins fine. Temps @62 @ load

I'm fairly new at this, any hints or tips on what to change to get say 3.8ghz? I got a venomous X cooler today (artic Silver Therm. paste i think), wondering with i could get 4.0 and stable
or would i need liquid for that
 

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no you can do 4ghz stable with your chip pretty easily. Use 23x multi with 174blck take your vcore to 1.25-1.3, and qpi/dram voltage to 1.25 that should work.
 

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I've heard about core i7 920s being overlcocked to 4.2 Ghz, but I would suggest you stay at 3.6GHz since its still very high

I would also suggest you run a CPU stress test program for 2-3 hours to insure the system is completely stable at full load.
A final tip, don't let it reach more that 70C or else you run the risk of frying the CPU!
I'm not very familiar with overclocking either so I cant provide anything more!
Good Luck!

Regards,

Toxaris71
 

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you cant fry a cpu, they have failsafes for that. 70c is the high of acceptable temperatures. Hes righ tyou shoudl run prime 95 for a few hours, IBT (intel burn test), and linx. There is a program called OCCT its pretty cool to check out as well.
 

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Discussion Starter #5
thx for all the input! I'll try and give 4.0 a crack i'm sure 3.6 will be more than enough especially since it's mostly a gaming rig lol. i just wasn't too sure about the cooling.

I'll post back the results.
 

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Quote:


Originally Posted by Sin0822
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you cant fry a cpu, they have failsafes for that. 70c is the high of acceptable temperatures. Hes righ tyou shoudl run prime 95 for a few hours, IBT (intel burn test), and linx. There is a program called OCCT its pretty cool to check out as well.

you are kind of right... you cant directly fry ONLY the CPU from overclocking (unless you are using ridiculous voltages, but 4.0ghz would not facilitate that) , but if the board fails, it can fry the CPU, depending on how it fails.
 

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Do you want to or need to OC to 4.0GHz?

Most sites say the benefits of OCing the i7 levels off around 3.6GHz, and the power consumption increases significantly around this point as well.
 

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I got my 950 to 4.01ghz with relatively little effort. Temps stay pretty low, 35-40 idle & 66-72 under Intel Burn Test. Voltages are pretty low, vcore 1.2125, QPI 1.315, Dram 1.6. 4ghz is a really common overclock. If it were really unsafe, I dont think a whole lot of people would be doing it. Granted, Im still relatively new at this as well.

But, there is always a risk with altering any electronic device outside the manufacturer's specs, however minimal they may be sometimes.
 

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but seems you went too overkill on the voltage? i got mine to 3.7 at 1.1....
 

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Quote:


Originally Posted by Razultull
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but seems you went too overkill on the voltage? i got mine to 3.7 at 1.1....

IBT 100 Runs on Maximum stable with 12 hours of Prime95 blend? I thought my overclock was fine until I ran Prime95 Blend. I had to bump the voltage up a bit. I also have a C0 revision CPU.
 

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Well then I'd suggest you leave it at 3.6Ghz for now and you have the bonus that you can brag that you got it up to 4GHz too!


Soberito is right, there is still a little risk when pushing a component beyond manufacturer spec, so be a careful if you want to go further!


regards,

Toxaris71
 

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Discussion Starter #14
Well i'm stumped lol. At every single attempt to break 4.0 the setup starts to act crazy (blue screen, a screen full of {HHHH} at start up, etc).

I've tried
1) This wouldn't even boot windows

Bclk 191
Vcore 1.2125
QPI/Vtt 1.315
Dram 1.6

2) This crashed after 3 seconds of Prime95

Ai Overclock Tuner - Manual
CPU Ratio Setting - Auto
Intel (R) SpeedStep (TM) Tech - Enabled
Intel (R) Turbo Mode Tech - Enabled
BCLK Frequency - 190
PCIE Fequency - 100
DRAM Frequency - DDR3 - 1523MHz

i'm back down to 3.6 @

CPU Ratio Setting - 20X
Intel (R) SpeedStep (TM) Tech - Disabled
BCLK Frequency - 181
PCIE Fequency - 100
DRAM Frequency - DDR3 - 1451MHz
DRAM CAS# Latency - 8 DRAM Clock
DRAM RAS# to CAS# Delay - 8 DRAM Clock
DRAM RAS# PRE Time - 8 DRAM Clock
DRAM RAS# ACT Time - 24 DRAM Clock
CPU Voltage 1.20000v
DRAM Bus Voltage - 1.66v
Load-Line Calibration - Enabled

seems to be the only thing that works.

any advice? if you have i7 950 and running at 4.0 stable plz post ur settings


thanks
 

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Discussion Starter #15
Anyone? I've tried lowering the bclk but no combination that gives me 4ghz seems to be stable... i'm sure i'm missing something. been reading on cpu volt to see if that's the reason but i dont think thats the case
 

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Quote:

Originally Posted by Riktar View Post
Well i'm stumped lol. At every single attempt to break 4.0 the setup starts to act crazy (blue screen, a screen full of {HHHH} at start up, etc).

I've tried
1) This wouldn't even boot windows

Bclk 191
Vcore 1.2125
QPI/Vtt 1.315
Dram 1.6

2) This crashed after 3 seconds of Prime95

Ai Overclock Tuner - Manual
CPU Ratio Setting - Auto
Intel (R) SpeedStep (TM) Tech - Enabled
Intel (R) Turbo Mode Tech - Enabled
BCLK Frequency - 190
PCIE Fequency - 100
DRAM Frequency - DDR3 - 1523MHz

i'm back down to 3.6 @

CPU Ratio Setting - 20X
Intel (R) SpeedStep (TM) Tech - Disabled
BCLK Frequency - 181
PCIE Fequency - 100
DRAM Frequency - DDR3 - 1451MHz
DRAM CAS# Latency - 8 DRAM Clock
DRAM RAS# to CAS# Delay - 8 DRAM Clock
DRAM RAS# PRE Time - 8 DRAM Clock
DRAM RAS# ACT Time - 24 DRAM Clock
CPU Voltage 1.20000v
DRAM Bus Voltage - 1.66v
Load-Line Calibration - Enabled

seems to be the only thing that works.

any advice? if you have i7 950 and running at 4.0 stable plz post ur settings


thanks
4.0 will most likely need more than 1.21v
try 1.25~1.3v and check for stability.(watch temp)
when stable, lower vcore anotch @ a time and still be stable

Are your dram timings "manually set" or is that just a report?

BSOD errors have a 0x.....I thought.
Wheres the H?
 

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Discussion Starter #17
The dram timings are manually set yes. any suggestions? i thought 1.25 was the suggested voltage. i set it at 1.27 and i saw a red warning disclaimer lol... i'm new to OC'ing so i'm a big wuss lol
 

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Discussion Starter #18
I went ahead and tried new settings tonight

Multiplier @ 21
Bclk @ 191
DDR freq @ 1149 MHz (1600 MHz ddr3)
CPU volt @ 1.275
Qpi volt @ 1.31250
Dram bus @ 1.60
Load line caliv. Enabled
Tried it w Hyper threading on and off and still it boots up but crashes after prime 95 for 5 seconds.

Can anyone plz w i7 950 @ 4ghz tell me what they put in? (full pc specs below
)

Another night of frustrations it seems lol
 

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Discussion Starter #20
Okay... i have it running @ 4.009! ...so far 40+ mins into prime95 (LOL i know some people run it for 24 hrs + but considering my luck with this OC it's a miracle lol)

My settings:

Multiplier: 21x
Bclk: 191
Cpu volt: 1.31975v
Ram @ 1524 Mhz
Load line caliv. Enabled
Hyperthreading: Off (Mostly gonna be gaming, and i read u don't really lose much, if any with it off)

Idle temp @ 39 C
Load @ 65 C

what do you think
 
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