Please help me with oc'ing a q9550

[chelhxi]

q9550
coolermaster hyper tx2
asus p5q-e
2x2gb corsair ddr2 1066 dominator 5-5-5-15 2.1v
windows vista 64bit

Hi, just like my title says, I want to oc this q9550. The thing is though, in my bios (newest bios flashed) when it is on "auto" it doesn't actually show what volts are going to the cpu, northbridge, southbridge. I brought it up to 3 ghz, but before I go further I want to input stock volts, as I am just looking to go as high an oc as possible with stock voltage, and I've read that asus tends to overvolt when set on auto.

I believe stock volts for q9550 are 1.2v, but does anyone have a similiar setup and be able to tell me what they have set for the motherboard voltage? (Ram is set to 2.1v as per spd)

thanks.

 

[Gillbot]

set it to auto, load windows and run coretemp or realtemp and see what your VID is.

 

[TidusZ]

CpuZ is pretty much the gold standard for viewing cpu voltage, as well as a lot of other tasty information. Offhand, the stock volts is somewhere mid 1.2xx.

I've overclocked two q9550's, one to 3.8ghz at 1.36v and my own to 4.25 @ 1.392v. You'll probably get 3.2 or a bit more at stock. 1.36v is the max recommended voltage (they got a special name for it) according to intel themselves. If you decide to do a moderate o/c later on, you can really squeeze out a lot more clocks there.

 

[chelhxi]

Ok, cpu-z shows a cpu voltage of 1.12 at idle, and under load goes up to 1.18. So I guess 1.2 should be for a 3.2 ghz oc? Now, what about the other voltage settings in the bios? Should I set the vcore and vdimm and leave the rest on auto, or would the mobo potentially be using more volts than needed for the northbridge/southbridge?

 

[Gillbot]

cpuz will not show you the VID, you need coretemp, realtemp or te retail box.

As for the CPUz voltage, read http://forums.anandtech.com/me...=2282402&enterthread=y

 

[TidusZ]

my q9550 is set to a little over 1.4 in bios and I run it 24/7.. I'm kinda interested to see how long it lasts. If it dies after a year it will just give me a reason to buy something faster. No matter what I should gain some insight into how long they last.

 

[ibitato]

Since you have an asus mobo, I reccomend that you user Asus PC Probe II to check the vlotages, etc.
CPU temps with this tool suck big time, do not trust them
for everyting else, its ok

 

[ibitato]

for 3.2 GHz you need at leas 1.2xx high , 13.xx low on MOBO vcore

leave everytinhg else in auto and start with this.

 

[ibitato]

replying to suscribe......

 

[GundamF91]

You have a good board, it should take you to 3.2-3.4ghz easy unless you have a lame q9550. Use 1.250v to start for Vcore. And as for Vdimm and others, you can leave them default.

 

[ibitato]

//offtopic
GuncamF91,
How high have you taken the 9450 ??
For everyday config (like for playing games 2 hours a day, then poweroff) would you run the 9450 at 3.8 , thus vcore =>1.4 fsbt(vtt)>=1.44??

 

[smackababy]

The stock for my 9550 was 1.235 I believe. I can check when I get home and verify. I got to around 3.1 before I had to up the voltage.

 

[chelhxi]

Thanks for all the replies. I've been dabbling, and have all voltages entered manually right now, as low as possible. (1.15 vcore, 1.1 nb, 1.1 sb, 1.1 fsb termination, 2.1 vdimm) I am able to go up to 3.0 with this, and prime95 runs fine. (coretemp shows vid as being 1.25, and everest showed it as 1.15- 1.25). This weekend I will play some more, and get it up to 3.2. I have a c1 stepping q9550, whis is supposed to be inferior to the newer e0 stepping, ah well.

Should the fsb termination mirror the nb voltage, how important is this setting? And what about the gtl reference voltages, are they better left on auto, or as low as possible?

 

[spinejam]

this is my setup -- rock solid! (for reference only)

UD3P (F9b Bios):

Q9550 E0 (L835B166) pack date: 11/11/2008

Robust Graphics Booster.....................[ Auto ]
CPU Clock Ratio.............................[ 8 ]
Fine CPU Clock Ratio........................[ 0.5 ]
CPU Frequency 4.0GHz........................[ 471*8.5 ]

******Clock Chip Control******

CPU Host Clock Control......................[Enabled ]
CPU Host Frequency (Mhz)....................[471 ]
PCI Express Frequency (Mhz).................[100 ]
C.I.A 2.....................................[Disabled]

******Advanced Clock Control******

CPU Clock Drive.............................[ 1000mv ]
PCI Express Clock Drive.....................[ 1000mv ]
CPU Clock Skew..............................[ 0ps ]
MCH Clock Skew..............................[ 50ps ]

******DRAM Performance Control******

Performance Enhance.........................[ Turbo ]
Extreme Memory Profile (XMP)................[ Disabled]
(G) MCH Frequency Latch.....................[ 333MHz ]
System Memory Multipler.....................[ 2.40b ]
Memory Frequency (Mhz) .....................[1130 DDR2]

DRAM Timing Selectable......................[ Manual ]

CAS Latency Time............................[ 6 ]
tRCD........................................[ 6 ]
tRP.........................................[ 6 ]
tRAS........................................[ 18 ]

******Advanced Timing Control******

tRRD........................................[Auto ]
tWTR........................................[Auto ]
tWR.........................................[Auto ]
tRFC........................................[Auto(52)]
tRTP........................................[Auto ]
Command Rate (cmd)..........................[Auto ]

******Motherboard Voltage Control******

Load-Line Calibration [Enabled]
CPU Vcore [ 1.25 ]...............[ 1.3500 ] (1.328 CPU-Z)
CPU Termination [ 1.20 ]...............[ 1.28 ]
CPU PLL [ 1.50 ]...............[ 1.500 ]
CPU Reference [ 0.760 ]...............[ 0.835 ]

MCH Core [1.1 ]...............[ 1.32 ]
MCH Reference [0.760 ]...............[ 0.850 ]
MCH/DRAM Refernce [0.900 ]...............[ 1.000 ]
ICH I/O [1.500 ]...............[ 1.500 ]
ICH Core [1.100 ]...............[ 1.100 ]

DRAM Voltage [1.800 ]...............[ 2.1 ]
DRAM Termination [0.900 ]...............[ 1.000 ]
Channel A Ref [0.900 ]...............[ 1.000 ]
Channel B Ref [0.900 ]...............[ 1.000 ]

******Advanced BIOS Features******

CPU Multithreading..........................[ Disabled ]
Limit CPUID Max to 3........................[ Disabled ]
No-Execute memory Protect...................[ Disabled ]
CPU Enhance Halt (CIE)......................[ Disabled ]
C2/C2E State Support........................[ Disabled ]
C4/C4E State Support........................[ Disabled ]
CPU Thermal Monitor.........................[ Enabled ]
CPU EIST Function...........................[ Disabled ]
Virtualization Technology...................[ Disabled ]

 

[evolucion8]

@spinejam, is your Q6600 at 3.60Ghz stable at 1.40V? My CPU only got stable at 1.42V. A Q6600 G0 is just a rebranded QX6850 since all QX6850 are stepping G0. A friend of mine stabilized a Q9550 @ 3.8GHz with 1.35V using a Zalman 9700

 

[spinejam]

Originally posted by: evolucion8
@spinejam, is your Q6600 at 3.60Ghz stable at 1.40V? My CPU only got stable at 1.42V. A Q6600 G0 is just a rebranded QX6850 since all QX6850 are stepping G0. A friend of mine stabilized a Q9550 @ 3.8GHz with 1.35V using a Zalman 9700

RE: q6600

vcore idle = 1.424
vcore (vdroop / load) = 1.4

stable @ 3.6

 

[BonzaiDuck]

Nifty. You'll see my post per the GA-EP45-UD3R on the "[Mo-][Bo]" forum.

I've been in nVidia-land since '07, and need to catch up.

Many thanks to SpineJam -- copy-cat that I yam, I yam . . .

I found another recommended OC configuration -- same format -- at TweakTown, for the E8400.

It won't save me from the reading I need to do, but it will make the reading easier.