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Old 06-09-2008, 04:49 PM   #1
dasa
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P45-DS4P Q9450 Ram limit 520mhz ?

The mb seems to have hit a limit with the ram at 520.8mhz
It couldnt reach 500mhz without getting errors in memtest86 test 4 till I set Performance Enhance from Turbo to Standard

Then the next limit was reached at 519mhz where memtest86 and prime95 would run ok but if i take the fsb even 1mhz higher it wont post
Changing Channel A&B Driving Settings from auto to OC-1333 allowed it to go up one more mhz fsb before the same problem was reached again

The mb and cpu are prime stable at 488fsb 3.9ghz with the ram 1:1 but it starts reaching the same memory limit in 1:1 if i oc much further
Last time i tried the 2x1g micron d9 i ran into the same problem but i will try again now that i have the f6 bios

So if anyone has some tips for how i may get past this limit would be great thanks


q9450 water cooled
2x2g patriot 444 800 2.2v
4870x2
pcp&c 510


GIGABYTE GA-EP45
CPU Clock Ratio: 9x
CPU Frequency: 3472Mhz

Clock Chip Control
Standard Clock Control
CPU Host Clock Control: [Enabled]
CPU Host Frequency(Mhz): 434
PCI Express Frequency(Mhz): 100 Mhz
C.I.A. 2: [Disabled]

Advanced Clock Control [Press Enter]
CPU Clock Drive: 800
PCI Express Clock Drive: 800
CPU Clock Skew: 0
MCH Clock Skew: 0

DRAM Performance Control
Performance Enhance: [Standard]
Extreme Memory Profile (X.M.P.):
(G)MCH Frequency Latch: [Auto]
System Memory Multiplier: 2.4b 5:6
Memory Frequency (Mhz): 1041Mhz
DRAM Timing Selectable: [Manual]
Standard Timing Control
CAS Latency Time: 5
tRCD: 5
tRP: 5
tRAS: 16

Advanced Timing Control [Press Enter]
tRRD: 5
tWTR: 5
tWR: 13
tRFC: 52
tRTP: 5
Command Rate (CMD): AUTO


>>>>> Channel A
Channel A Timing Settings: [Press Enter]
Static tRead Value: 10

Channel B Timing Settings: [Press Enter]
Static tRead Value: 10


Motherboard Voltage Control

CPU Vcore: 1.45v
CPU Termination | 1.200V: 1.300v
CPU PLL | 1.50V: v
CPU Reference | 0.760V: v AUTO
CPU Reference2 | 0.800V: v AUTO

MCH Core | 1.100V: 1.32v
MCH Reference | 0.800V: v AUTO
MCH/DRAM Ref | 0.900V: v AUTO
ICH I/O | 1.500V: v AUTO
ICH Core | 1.100V: v AUTO

DRAM Voltage | 1.800V: 2.18v
DRAM Termination | 0.900V: v AUTO
Channel A Reference | 0.900V: v AUTO
Channel B Reference | 0.900V: v AUTO

Advanced Bios Features
Limit CPUID Max. to 3: [Disabled]
No-Execute Memory Protect: [Disabled]
CPU Enhanced Halt (C1E): [Disabled]
C2/C2E State Support: [Disabled]
x C4/C4E State Support: [Disabled]
CPU Thermal Monitor 2(TM2): [Disabled]
CPU EIST Function: [Disabled]
Virtualization Technology.: [Disabled]

anything not listed above is most likely still set at stock settings

Last edited by dasa; 06-09-2008 at 06:38 PM.
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Old 06-09-2008, 06:37 PM   #2
dasa
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tried raising the fsb in windows and was able to increase the fsb and ram speed to ~450-460fsb i think it was and it was still able to run 8m pi and 10min of prime95 without any problems so its just a posting problem i think

the 2x1g 444-12 800 team x micron d9 hits the same limit but i also tested it with one stick of ram this time which allowed it to reach 460fsb 5:6 before memtest started to error in test 5 increasing the ram v reduced the errors so i guess it finally reached the rams limit instead of another mb limit

so any ideas what settings may get past this 520mhz post limit when using two sticks of ram?
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Old 07-09-2008, 12:44 AM   #3
eva2000
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try even higher tRFC say 60-88+ and static tread 11 with MCH volts between 1.4-1.48v

9450 quad core also stresses the memory controller more and Gigabyte P45 is already not that great for 2x1GB dual channel compared to others for tight settings let alone 2x2GB memory clocks + 9450.
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Old 07-09-2008, 02:44 PM   #4
dasa
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By eva2000 View Post
try even higher tRFC say 60-88+ and static tread 11 with MCH volts between 1.4-1.48v
Thanks for the tip im afraid it didnt help but it did get me to have another go at the ram
this time i tried tightening timings and seeing how much i could lower the v and threw some fluke there seems to be something it likes about these settings as the limit is gone
http://i3.photobucket.com/albums/y83.../ram540mhz.jpg

CPU Host Frequency(Mhz): 450
PCI Express Frequency(Mhz): 100 Mhz
C.I.A. 2: [Disabled]

Advanced Clock Control [Press Enter]
CPU Clock Drive: 800
PCI Express Clock Drive: 800
CPU Clock Skew: 0
MCH Clock Skew: 0

DRAM Performance Control
Performance Enhance: [Turbo]
Extreme Memory Profile (X.M.P.):
(G)MCH Frequency Latch: [Auto]
System Memory Multiplier: 2.4b 5:6
Memory Frequency (Mhz): 1080Mhz
DRAM Timing Selectable: [Manual]
Standard Timing Control
CAS Latency Time: 5
tRCD: 5
tRP: 5
tRAS: 15

Advanced Timing Control [Press Enter]
tRRD: 3
tWTR: 3
tWR: 6
tRFC: 48
tRTP: 3
Command Rate (CMD): AUTO


>>>>> Channel A
Channel A Timing Settings: [Press Enter]
Static tRead Value: 8

Channel B Timing Settings: [Press Enter]
Static tRead Value: 8


Motherboard Voltage Control

CPU Vcore: 1.35v
CPU Termination | 1.200V: Normal
CPU PLL | 1.50V: v Normal
CPU Reference | 0.760V: v AUTO
CPU Reference2 | 0.800V: v AUTO

MCH Core | 1.100V: Normal
MCH Reference | 0.800V: v AUTO
MCH/DRAM Ref | 0.900V: v AUTO
ICH I/O | 1.500V: v AUTO
ICH Core | 1.100V: v AUTO

DRAM Voltage | 1.800V: 2.2v
DRAM Termination | 0.900V: v AUTO
Channel A Reference | 0.900V: v AUTO
Channel B Reference | 0.900V: v AUTO


managed this 3dm yesterday now to see if these settings help me break the 500fsb limit

3DMark06
22796 http://service.futuremark.com/compare?3dm06=8079641

SM 2.0 Score 8787
SM 3.0 Score 10907
CPU Score 6424

q9450@4ghz 1.5125v
ep45-ds4p 500fsb
2x1g micron d9 1:1 444-12 2.28v
4870x2 stock
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Old 19-10-2008, 10:07 AM   #5
Johnpain
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try performace enhacer to standered.(Mostly) = more stable...
You owe me a nice thanks if it woks.
If its d9 ram i dont see why it wont hit wot you want.
GL

edit you did this
My bad, i think you should just put the divider to 2.
My 2x2gb micron new ic 800 will not do 1200mhz 2.3 and i wasnt gonna put it ubder more heat.
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Old 21-10-2008, 12:40 AM   #6
Tekxpert
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Updated the bios? F7 current.

2.4B strap never worked well for me with 2 x 1Gb past 434Mhz FSB. Although my Patriot sticks are rated 600Mhz.
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