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Thread ID: 87230 2008-02-13 19:28:00 Bios settings JJJJJ (528) Press F1
Post ID Timestamp Content User
639963 2008-02-13 19:28:00 I have 2x 1024 sticks of DDR2 800 ram.

If I set my bios to DDR2 800 my computer will not load win xp.

In fact it will not load with any setting except Auto.


Any Ideas?

Cpu X6800
M/B Asus P5B-E
JJJJJ (528)
639964 2008-02-13 19:39:00 Are you running the RAM in dual channel mode?

If so, try changing the motherboard to 400 rather than 800, or just leave it on auto. Maybe thats even the better option.

I don't know a heap about that type of thing, SolMeister is very good with that.
wratterus (105)
639965 2008-02-13 19:45:00 Is the auto setting not detecting the frequency correctly? stormdragon (6013)
639966 2008-02-13 19:52:00 Dont know if this helps, but whats the speed of the CPU??

From the ASUS site:

My motherboard has been listed on ASUS CPU support list as being able to support FSB1333 processors.

However, after checking Intel website, the north bridge chipset only suppose to support up to FSB1066.

Does this mean there is going to be some limitation to its FSB1333 support?

Yes, as the FSB1333 support was implmented based on overclocking north bridge chipset from FSB1066 mode, while chipset does not support asynchronous frequency adjustment between FSB and RAM, the supported memory specification will differ as compare with its natively supported FSB settings, in order to keep the same FSB/RAM frequency ratio.

For P965 chipsets, under FSB1333 mode, memory can only operate under the following frequencies:

Originally DDR2-533 will become 533MHz*1333/1066 = 667MHz
Originally DDR2-667 will become 667MHz*1333/1066 = 833MHz
Originally DDR2-800 will become 800MHz*1333/1066 = 1000MHz

As for 975X chipsets:
Originally DDR2-533 will become 533MHz*1333/1066 = 667MHz
Originally DDR2-667 will become 667MHz*1333/1066 = 833MHz

Hence only when operate under 1333/667 mode, will the system operate under a FSB 1333 configuration without CPU and memory overclock or underclock.

It is adviceable to adjust memory timing and its supply voltage manually if desired memory frequency cannot be achieved.

And

I have just purchased an ASUS P965 chipsets based motherboard with FSB1333 support, and found the system may refuse to boot when particular DIMM modules have been installed.

Are there any special requirements for FSB1333 support on these motherboards?

For the P5B-E update the BIOS to 1601
Speedy Gonzales (78)
639967 2008-02-13 22:38:00 Does this help the diagnosis?

Core speed=1601.3 MHz
Multiplyer = x6.0
Bus Speed = 266.9 MHz
Rated FSB= 1067.5


Chipset is 965.

Dram Frequency = 400.3 MHz
FSB Dram = 2.3


CPU
Property Value
Number of CPU(s) One Physical Processor / 2 Cores / 2 Logical Processors / 64 bits
Vendor GenuineIntel
CPU Full Name Intel Core 2 Extreme
CPU Name Intel(R) Core(TM)2 CPU X6800 @ 2.93GHz
CPU Code Name Conroe
Technology 0.065µ
Platform Name LGA775
Type Original OEM processor
FSB Mode QDR
Microcode ID C6
Type ID 0
CPU Clock 2935.73
System Bus Clock -1.0
System Clock 266.88
Multiplier 11.00
Original Clock 2933.33
Original Bus Clock 1066.67
Original System Clock 266.67
Original Multiplier 11.00
Overclock 0.08%
L2 Cache Speed 2935.73 MHz
L2 Cache Speed Full
CPU Family / Model / Stepping 6 / F / 6
L1 I-Cache 32 KB
L1 D-Cache 32 KB
L2 Cache 4096 KB
RDMSR 42C80000 00000000 88040B28 00000000
MMX Yes
SSE Yes
SSE2 Yes
SSE3 Yes
SSSE3 Yes
DualCore Yes
HyperThreading No
IA-64 No
Intel 64 (EM64T) Yes
XD Yes
VT Yes
SpeedStep Yes
Architecture x86


MOTHER BOARD
Property Value
Manufacturer ASUSTeK Computer INC.
Model P5B-E
Version Rev 1.xx
Serial Number MB-1234567890

Chipset Vendor Intel Corporation
Chipset Model P965/G965 Memory Controller Hub
South Bridge 82801HB/HR (ICH8/R) LPC Interface Controller
SMBus Intel Corporation 82801H (ICH8 Family) SMBus Controller @0400h

CPU Intel Core 2 Extreme
Cpu Socket LGA775 [Socket 775]
Processor Upgrade
Max CPU Speed 3800 MHz

System Slots 4 PCI

OnBoard devices
Ethernet (Enabled) Onboard Ethernet

Memory Summary
Location System board or motherboard
Maximum Capacity 4096 MBytes
Memory Slots 4
Error Correction None
Use System memory
Maximum Memory Module Size 2048 MBytes

Warning! Accuracy of DMI data cannot be guaranteed
Property Value
Manufacturer ASUSTeK Computer INC.
Model P5B-E
Version Rev 1.xx
Serial Number MB-1234567890

Chipset Vendor Intel Corporation
Chipset Model P965/G965 Memory Controller Hub
South Bridge 82801HB/HR (ICH8/R) LPC Interface Controller
SMBus Intel Corporation 82801H (ICH8 Family) SMBus Controller @0400h

CPU Intel Core 2 Extreme
Cpu Socket LGA775 [Socket 775]
Processor Upgrade
Max CPU Speed 3800 MHz

System Slots 4 PCI

OnBoard devices
Ethernet (Enabled) Onboard Ethernet

Memory Summary
Location System board or motherboard
Maximum Capacity 4096 MBytes
Memory Slots 4
Error Correction None
Use System memory
Maximum Memory Module Size 2048 MBytes

Warning! Accuracy of DMI data cannot be guaranteed


MEMORY
Property Value
Memory Summary
Location System board or motherboard
Maximum Capacity 4096 MBytes
Memory Slots 4
Error Correction None
Use System memory
Maximum Memory Module Size 2048 MBytes


Device Locator Slot 1
Manufacturer Corsair
Part Number CM2X1024-6400
Serial Number 00000000
Capacity 1024 MBytes
Memory Type DDR2 SDRAM
Speed DDR2-800 (400 MHz)
Data Width 64 bits
Voltage SSTL 1.8V
Error Correction None
Refresh Reduced (.5x)...7.8 µs
Manufacturing Date 2006, Week 23
Module Height 30.0 mm
EPP SPD Support No


Device Locator Slot 3
Manufacturer Corsair
Part Number CM2X1024-6400
Serial Number 00000000
Capacity 1024 MBytes
Memory Type DDR2 SDRAM
Speed DDR2-800 (400 MHz)
Data Width 64 bits
Voltage SSTL 1.8V
Error Correction None
Refresh Reduced (.5x)...7.8 µs
Manufacturing Date 2006, Week 23
Module Height 30.0 mm
EPP SPD Support No

Warning! Accuracy of DMI data cannot be guaranteed
JJJJJ (528)
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