Overclocking on a 9550

[jag989]

I've run in to a wall of sorts with my q9550 a bit earlier than I expected : (

8.5 x 425 for about 3.6ghz at 1.29v seems to be the highest I can go before the necessary voltage adjustments start spiking the temps too high (using air cooling). That overclock alone has given a noticeable boost to my FPS in Northrend, but I would still like to push it a little further.

Has anyone else with a 9550, or even just a Yorkfield chip for that matter, had similar/better results?

[king.pa]

471x8.5 :) that's 4 Ghz 24/7 with 8GB ram on a Gigabyte EP45-UD3P :)

sadly the forum where I picked up the tweaks to get up there is down, otherwise, check-out this thread when the site comes back online : ** Official ** Gigabyte UD3 P45 Series -- EP45-UD3 / EP45-UD3R / EP45-UD3P - Page 113 - XtremeSystems Forums ('http://www.xtremesystems.org/forums/showthread.php?t=205132&page=113')

Otherwise, here's my template (CPU PLL is the VVT)

************************************************** *****
MB Intelligent Tweaker(M.I.T.)
************************************************** *****
Robust Graphics Booster ..............: Auto
CPU Clock Ratio ......................: 8.5x
CPU Frequency ........................: 4.0GHz (471x8.5)

************** Clock Chip Control **************
>>>>>> Standard Clock Control
CPU Host Clock Control................: Enabled
CPU Host Frequency (Mhz) .............: 471
PCI Express Frequency (Mhz) ..........: 100
C.I.A.2 ..............................: Disabled

>>>>>> Advanced Clock Control.........: [Press Enter]
CPU Clock Drive.......................: 1000mV
PCI Express Clock Drive...............: 1000mV
CPU Clock Skew (ps)...................: 0ps
MCH Clock Skew (ps)...................: 0ps

*********** DRAM Performance Control ***********
Performance Enhance...................: Standard
(G)MCH Frequency Latch................: Auto
System Memory Multiplier .............: 2.00D
Memory Frequency (Mhz) ...............: 942
DRAM Timing Selectable ...............: Manual

>>>>>> Standard Timing Control
CAS Latency Time......................: 5
tRCD .................................: 5
tRP...................................: 5
tRAS..................................: 15

>>>>>> Advanced Timing Control........: [Press Enter]
tRRD..................................: Auto
tWTR..................................: Auto
tWR...................................: Auto
tRFC..................................: 55
tRTP..................................: Auto
Command Rate (CMD) ...................: 2

>>>>>> Channel A Timing Settings......: [Press Enter]
Static tRead Value....................: 9
tRD Phase0 Adjustment.................: Auto
tRD Phase1 Adjustment.................: Auto
tRD Phase2 Adjustment ................: Auto
tRD Phase3 Adjustment.................: Auto
Trd2rd(Different Rank)................: Auto
Twr2wr(Different Rank)................: Auto
Twr2rd(Different Rank)................: Auto
Trd2wr(Same/Diff Rank)................: Auto
Dimm1 Clock Skew Control (ps).........: +300
Dimm2 Clock Skew Control (ps).........: +300
DDR Write Training....................: Enabled

>>>>>> Channel A Driving Settings.....: [Press Enter]
Driving Strength Profile..............: Auto
Data Driving Pull-Up Level............: Auto
Cmd Driving Pull-Up level.............: Auto
Ctrl Driving Pull-Up Level............: Auto
Clk Driving Pull-Up Level.............: Auto
Data Driving Pull-Down Level..........: Auto
Cmd Driving Pull-Down level...........: Auto
Ctrl Driving Pull-Down Level..........: Auto
Clk Driving Pull-Down Level...........: Auto

>>>>>> Channel B Timing Settings......: [Press Enter]
Static tRead Value....................: 9
tRD Phase0 Adjustment.................: Auto
tRD Phase1 Adjustment.................: Auto
tRD Phase2 Adjustment ................: Auto
tRD Phase3 Adjustment.................: Auto
Trd2rd(Different Rank)................: Auto
Twr2wr(Different Rank)................: Auto
Twr2rd(Different Rank)................: Auto
Trd2wr(Same/Diff Rank)................: Auto
Dimm1 Clock Skew Control (ps).........: +300
Dimm2 Clock Skew Control (ps).........: +300
DDR Write Training....................: Enabled

>>>>>> Channel B Driving Settings.....: [Press Enter]
Driving Strength Profile..............: Auto
Data Driving Pull-Up Level............: Auto
Cmd Driving Pull-Up level.............: Auto
Ctrl Driving Pull-Up Level............: Auto
Clk Driving Pull-Up Level.............: Auto
Data Driving Pull-Down Level..........: Auto
Cmd Driving Pull-Down level...........: Auto
Ctrl Driving Pull-Down Level..........: Auto
Clk Driving Pull-Down Level...........: Auto

********* Motherboard Voltage Control *********
Voltage Types...........Normal..........Current
-----------------------------------------------
>>>>>> CPU
Load-Line Calibration.................: Enabled
CPU Vcore..............1.31250v.......: 1.37500V
CPU Termination........1.200v.........: 1.300V
CPU PLL................1.500v.........: Normal
CPU Reference..........0.780v.........: auto

>>>>>> MCH/ICH
MCH Core...............1.100v.........: 1.320V
MCH Reference..........0.800v.........: Normal
MCH/DRAM Ref...........0.900v.........: Normal
ICH I/O................1.500v.........: Normal
ICH Core...............1.100v.........: Normal

>>>>>> DRAM
DRAM Voltage...........1.800v.........: 1.900V
DRAM Termination.......0.900v.........: Normal
Channel A Reference....0.900v.........: Normal
Channel B Reference....0.900v.........: Normal

[jag989]

That is quite a nice setup you have there : ) What sort of cooling are you using though? I think mine would explode at that voltage : /

[brasssmunky]

yeah, just try to stay under 1.3625v for vcore and get a decent cooler
decent budget one is the xigmatek s1283 (normal and dark knight variant.. the DK has a bolt-thru kit included..)

i'm not the greatest OCer due to my lack of intel chipset exp... apart from some toying on p5q pro and some foxconn g31 i've little exp with non nvidiot boards.

oh, and do you know if your OC is stable?
run something like linX http://www.blazingpc.com/forum/showthread.php/linx_nice_linpack_stress_tester-16284/index.html?t=16284 for 100 iterations using al of your mem (do it overnight, its gonna take a while..) that will let you know if your stable.
it will also crank up your heat.. to INSANE levels