Overclocking Asus P5B

[Lagu]

I have used Asus AI Booster and over clocked the Intel C2D from a speed at 2394/266 to 2482/276 MHz. The DRAM voltage and frequency are set to AUTO.

The FSB speed = 1103 MHz
Core speed = 2482,80 MHz
CPU frequency = 275,9 MHz
CPU ratio = 9

DRAM frequency = 413,9 MHz
FSB/DRAM = 2,3
CAS# Latency = 5,0 clocks
RAS# to CAS# Delay = 5 clocks
RAS# Precharge = 5 clocks
Cycle time = 18 clocks
Command rate =2T

Dram frequency is 413,9 MHz but I can manually choose a higher value. I have this to choose among 533, 607, 800, 889 and 1067 MHz. What happen if I choose 533 or 800 MHz? Can it be so when I use Auto settings the memory is used to its maximum speed IE. 800 MHz?

I have noticed ASUS P5B motherboard is better for over clocking than VIA Kv8 Pro as I have on my AMD64. I have over clocked this PC from 2200/204 to 2310/210 MHz, CPU ratio = 11.x. but if I use a higher setting, it will be unstable. It is a wery little overclock, yes I think it has little effect.

I am new and unused to over clock so every comment is highly appreciated.

Lagu

It is not an AMD Chipset as you can see.

General Information chipset P5B:
NorthBridge: Intel P965
SouthBridge: 82801HB/HR (ICH8/R) LPC Interface Controller

NorthBridge Information:
Architecture: Direct Media Interface (DMI)
Manufacturer: Intel (ASUSTeK Computer Inc)
Codename: Broadwater
Revision: C1
Bus Speed: 275.9 MHz
FSB Frequency: 1103.5 MHz (QDR)
FSB max. Support: 1066 MHz
RAM max. Support: DDR2 (800 MHz)

Memory Information:
Type: DDR2-SDRAM PC2-6600
Frequency: 413.8 MHz
DRAM/FSB Ratio: 3/2
Supported Channels: Dual (128-bit)
Activated Channels: Dual
ECC Diagnostic: No
CAS Latency (tCL): 5 clocks
RAS to CAS (tRCD): 5 clocks
RAS Precharge (tRP): 5 clocks
Cycle Time (tRAS): 18 clocks
Command Rate: 2 T

Physical Capabilities:
FlexMemory: Yes - Disabled
ME Support: No

PCI-Express Information:
Number of ports: 4 - (x16, x1, x1, x1)

Functionality:
SATA AHCI Enabled: Yes
RAID 0/1/10 Enabled: No
RAID 5 Enabled: No
PCI Express x1 Enabled: Yes
Intel AMT: Yes
Intel QST: Yes
SPI Interface: Yes

Thermal control:
Thermal Sensor Enabled: No
Thermometer Mode Enabled: No

Device Capabilities (PCI):
I/O Access: No
Memory Access: Yes
Bus Master Capable: Yes
Special Cycle Recognition: No
Memory Write & Invalidate: No
VGA Palette Snoop: No
Parity Error Response: No
Cycle Wait: No
System Error Line: No
Fast Back-to-Back: No
Detects Parity Errors: No
User Defined Format: No
PCI 66Mhz Bus Support: No
New Capability List: Yes
PCI Support: Vendor-Dependant

DIMM0 (RAS 0, RAS 1): 1024 (Double Bank)
DIMM1: Empty
DIMM2 (RAS 4, RAS 5): 1024 (Double Bank)
DIMM3: Empty

Information SPD EEPROM (DIMM0):
Manufacturer: Corsair
Part Number: CM2X1024-6400
Serial Number: Unspecified
Type: DDR2-SDRAM PC2-6400 (399 MHz) - [DDR2-800]
Format: Regular UDIMM (133,35 x 3)
Size: 1024 MB (2 ranks, 4 banks)
Module Buffered: No
Module Registered: No
Module SLi Ready (EPP): No
Width: 64-bit
Error Correction Capability: No
Refresh: Reduced (.5x)7.8 µs, Self Refresh
Voltage: SSTL 1.8v
Prefetch Buffer: 4-bit
Manufacture: Week 23 of 2006
Supported Frequencies: 270 MHz, 400 MHz
CAS Latency (tCL): 4 clocks @270 MHz, 5 clocks @400 MHz
RAS to CAS (tRCD): 4 clocks @270 MHz, 5 clocks @400 MHz
RAS Precharge (tRP): 4 clocks @270 MHz, 5 clocks @400 MHz
Cycle Time (tRAS): 13 clocks @270 MHz, 18 clocks @400 MHz
Min TRC: 15 clocks @270 MHz, 22 clocks @400 MHz

Information SPD EEPROM (DIMM2):
Manufacturer: Corsair
Part Number: CM2X1024-6400
Serial Number: Unspecified
Type: DDR2-SDRAM PC2-6400 (399 MHz) - [DDR2-800]
Format: Regular UDIMM (133,35 x 3)
Size: 1024 MB (2 ranks, 4 banks)
Module Buffered: No
Module Registered: No
Module SLi Ready (EPP): No
Width: 64-bit
Error Correction Capability: No
Refresh: Reduced (.5x)7.8 µs, Self Refresh
Voltage: SSTL 1.8v
Prefetch Buffer: 4-bit
Manufacture: Week 23 of 2006
Supported Frequencies: 270 MHz, 400 MHz
CAS Latency (tCL): 4 clocks @270 MHz, 5 clocks @400 MHz
RAS to CAS (tRCD): 4 clocks @270 MHz, 5 clocks @400 MHz
RAS Precharge (tRP): 4 clocks @270 MHz, 5 clocks @400 MHz
Cycle Time (tRAS): 13 clocks @270 MHz, 18 clocks @400 MHz
Min TRC: 15 clocks @270 MHz, 22 clocks @400 MHz

Memory Controller Information:
Memory Controller: DIMM, SDRAM
Number of connectors: 4
Max. Module Size: 0 MB
Supported Speed: Unspecified
Supported Voltages: 3.3v
Error Detection Method: No
Error Correction Capability: None
Current/Supported Interleave: 1-way/1-way

[Frederic Brillouet]

Lagu, what C2D do you have? A friend of mine has an E6400 on that motherboard and he's been able to overclock it from 2.18 to 3.1 GHz with a zalman 9500 at lowest settings and with bad airflow. He uses it to crunch as well. If you want I could ask him what his oc settings were.

[Lagu]

I have a E6600 default speed 2,4 GHz. Yes thank you, ask him please

[mitchellds]

Hey Lagu,

Read and follow this guide, its real easy to get a great overclock on a p5b mb, depending on which version of the p5b. Which do you have? The p5b deluxe versions are the bomb, but p5b-v really suck for overclocking for instance. I have 5 p5b deluxe mb's that are about as easy to OC as can be.

The newer version, called the p5k is even better, I have several of these running q6600 quad, and 3.2 -3.6 ghz range.

Its easy to get 3.2 -3.5 GHZ overclocks with really heat being the limiting factor more than anything. I watercool for the best overclocks to go beyond that. Get yourself some good air coolers or some water, and also start with good CAS level quality ddr-800 memory.

http://www.thetechrepository.com/showthread.php?t=41