I've got an Epox EP-8RDA3+ Pro motherboard (Nforce 2 Ultra) running WinXp Pro. Previously I was using two 512MB ddr 333 memory sticks with my FSB running at 166Mhz, and the computer was working fine. I recently purchased a pair of 2GB Corsair XMS matched PC3200 sticks. When I raised the FSB to 200Mhz in the bios, my WinXP system became unstable and I got blue screens. I was using conservative auto memory settings. I thought the motherboard was designed to operate at this speed properly, considering I now have memory that will handle that speed. I'm using the latest bios. My only other thoughts are maybe that my PCI bus or AGP video card can't handle this. Any ideas would be appreciated.
The main possibility here is probably that the processor is multiplier-locked. If the multiplier is locked at 11.5x (for instance) bumping up the FSB from 166 to 200 MHz will mean an increase of 33 MHz x 11.5 = 379.5 Mhz. I'm not sure if you can put an extra 380MHz on it w/o good cooling. Also you're right, the PCI bus clock is a fraction of the system bus clock so you have to think about that as well.
By raising your FSB to 200MHz, did you reduce your multiplier? Because if you don't you are seriously overclocking your CPU. If your CPU is a 1833MHz, by increasing to 200MHz FSB, it's going to run at 2200MHz, which is a lot!\ Edit: LOL, someone's faster than me.
Is there any setting in your BIOS whereby you can set the pic/agp clock speed?? if no then i am afraid your mobo does not have pci/agp speed lock...once you raise from 166 to 200 the pci/agp clock speed will be raised too..i suspect your HDD could not handle the increased speed which cause the instability..anyway those are my opinions
Am using Barton Athlon Xp 2600+ Sorry, I forgot to mention that I'm using a Barton Athlon Xp 2600. Shouldn't be any reason that it can't handle the 200 FSB I think?
It's too much to ask of standard cooling. Maybe if there was a serious cooling system on it, maybe. But on standard, putting an extra 300+ MHz on it would be a miracle.
What has cooling have to do with it? I never said I have a cpu temperature problem. I'm using a huge Zalman CuAl cooler anyway. I'm not overclocking a cpu that was meant to be able to run with a 200 mhz FSB.
Um.. the 2600+ runs on a double-clocked 166 MHz system bus. The OPN will state a 333 MHz bus, but in actual fact it's a dual-clocked 166 MHz bus. Because of this the correct system bus setting should be 166 MHz. http://www.pcvsconsole.com/hank/answer.php?file=564 This is from the AMD FAQ :
Cpu Info Report Here's my Info: CPU-Z ReportCPU-Z Report CPU-Z version 1.34.1. CPU(s) Number of CPUs1 NameAMD Athlon XP Code NameBarton SpecificationAMD Athlon(tm) XP 2600+ Family / Model / Stepping6 A 0 Extended Family / Model7 A PackageSocket A Technology0.13 um Supported Instructions SetsMMX, Extended MMX, 3DNow!, Extended 3DNow!, SSE CPU Clock Speed1916.7 MHz Clock multiplierx 11.5 Front Side Bus Frequency166.7 MHz Bus Speed333.3 MHz L1 Data Cache64 KBytes, 2-way set associative, 64 Bytes line size L1 Instruction Cache64 KBytes, 2-way set associative, 64 Bytes line size L2 Cache512 KBytes, 16-way set associative, 64 Bytes line size L2 Speed1916.7 MHz (Full) L2 LocationOn Chip L2 Data Prefetch Logicyes L2 Bus Width64 bits Mainboard and chipset Motherboard manufacturer Motherboard modelnVidia-nForce, BIOS vendorPhoenix Technologies, LTD BIOS revision6.00 PG BIOS release date02/08/2006 ChipsetnVidia nForce2 Ultra 400 rev. C1 SouthbridgenVidia nForce2 MCP rev. A3 Sensor chipWinbond W83627THF Graphic InterfaceAGP AGP Statusenabled, rev. 3.0 AGP Data Transfer Rate8x AGP Max Rate8x AGP Side Band Addressingsupported, enabled Memory DRAM TypeDDR-SDRAM DRAM Size2048 MBytes DRAM Frequency166.7 MHz FSBRAM1:1 CAS# Latency3.0 clocks RAS# to CAS#3 clocks RAS# Precharge3 clocks Cycle Time (TRAS)7 clocks # of memory modules2 Module 0Corsair DDR PC3200 - 1024 MBytes Module 1Corsair DDR PC3200 - 1024 MBytes Software Windows versionMicrosoft Windows XP Professional Service Pack 2 (Build 2600) DirectX version9.0c *********************************************** SiSoftware Sandra Processor Model : AMD Athlon(tm) XP 2600+ Speed : 1.92GHz Model Number : 2600 (estimated) Performance Rating : PR2780 (estimated) Type : Standard Package : Socket A PGA Multiplier : 23/2x Generation : G7 Name : Duron M10 & Athlon MP/XP (Barton/Thorton) 130nm 1.8GHz+ 1.6-1.65V Revision/Stepping : A / 0 (0) Stepping Mask : A2 Core Voltage Rating : 1.650V Maximum Physical / Virtual Addressing : 34-bit / 32-bit Native Page Size : 4kB Co-Processor (FPU) Type : Built-in Revision/Stepping : A / 0 (0) Processor Cache(s) Internal Data Cache : 64kB Synchronous Write-Back (2-way, 64 byte line size) Internal Instruction Cache : 64kB Synchronous Write-Back (2-way, 64 byte line size) L2 On-board Cache : 512kB ECC Synchronous Write-Back (16-way, 64 byte line size) L2 Cache Multiplier : 1/1x (1917MHz) Upgradeability Socket/Slot : Socket A Upgrade Interface : ZIF Socket Supported Speed(s) : 1.92GHz+ Environment Monitor 1 Model : Winbond W83627(T)HF ISA Version : 9.00 Mainboard Specific Support : No Power Rating(s) CPU Core Power : 66W (estimated) CPU Cooling System Thermal Resistance : 0.03°C/W (estimated) Sensors CPU Temperature : 30.0°C / 86.0°F Auto Fan Speed Control : No CPU Fan Speed : 2377rpm CPU Voltage : 1.68V ********************************************** SiSoftware Sandra Mainboard Manufacturer : Pronix (Epox) MP Support : No Model : nVidia-nForce System BIOS : 02/08/2006-nVidia-nForce-6A61BPANC-00 Chipset : nVidia nForce2 ICP System Memory Controller Location : Mainboard Error Correction Capability : None Number of Memory Slots : 3 Maximum Installable Memory : 1GB Bank0/1 - A0 : DIMM 1024MB Bank2/3 - A1 : DIMM 1024MB Bank4/5 - A2 : Empty Chipset 1 Model : Nvidia Corp nForce2 AGP Controller Bus(es) : ISA AGP PCI USB FireWire/1394 Front Side Bus Speed : 2x 167MHz (334MHz data rate) Maximum FSB Speed / Max Memory Speed : 2x 200MHz / 2x 200MHz Width : 64-bit IO Queue Depth : 8 request(s) Chipset 1 Hub Interface Type : HyperTransport Version : 0.10 In/Out Width : 8-bit / 8-bit Speed : 2x 200MHz (400MHz data rate) Logical/Chipset 1 Memory Banks Bank 0 : 1024MB DDR-SDRAM 3.0-3-3-7CL 2CMD Bank 2 : 1024MB DDR-SDRAM 3.0-3-3-7CL 2CMD Channels : 2 Speed : 2x 167MHz (334MHz data rate) Multiplier : 5/5x Width : 64-bit Power Save Mode : No Fixed Hole Present : No Environment Monitor 1 Model : Winbond W83627(T)HF ISA Version : 9.00 Mainboard Specific Support : No Temperature Sensor(s) Board Temperature : 28.0°C / 82.4°F CPU Temperature : 30.0°C / 86.0°F Power / Aux Temperature : 9.0°C / 48.2°F Cooling Device(s) Auto Fan Speed Control : No CPU Fan Speed : 2377rpm Voltage Sensor(s) CPU Voltage : 1.68V Aux Voltage : 1.54V +3.3V Voltage : 1.62V +5V Voltage : 4.78V +12V Voltage : 10.52V -12V Voltage : -8.99V -5V Voltage : -1.23V Standby Voltage : 4.58V Battery Voltage : 2.96V AGP Bus(es) on Hub 1 Version : 3.00 Speed : 8x Fast-Writes Enabled : Yes Isochronous Mode Enabled : No Addressing Enabled : 32-bit Aperture Size : 128MB PCI Bus(es) on Hub 1 Version : 2.20 Number of Bridges : 2 PCI Bus 0 : PCI (1/1x PCIClk) PCI Bus 1 : PCI (1/1x PCIClk) LPC Hub Controller 1 Model : Epox Computer Co Ltd ??? (0080) USB Controller 1 Model : Epox Computer Co Ltd ??? (0087) Version : 1.00 Interface : OHCI Channels : 4 Supported Speed(s) : Low (1.5Mbps) Full (12Mbps) Legacy Emulation Enabled : No USB Controller 2 Model : Epox Computer Co Ltd ??? (0087) Version : 1.00 Interface : OHCI Channels : 4 Supported Speed(s) : Low (1.5Mbps) Full (12Mbps) Legacy Emulation Enabled : No USB Controller 3 Model : Epox Computer Co Ltd ??? (0088) Version : 2.00 Specification : 1.00 Interface : EHCI Channels : 8 Companion Controllers : 2 Supported Speed(s) : Low (1.5Mbps) Full (12Mbps) High (480Mbps) Addressing Support : 32-bit Legacy Emulation Enabled : No FireWire/1394 Controller 1 Model : Epox Computer Co Ltd VT6306 VIA Fire II IEEE-1394 OHCI Link Layer Controller Version : 1.00 Interface : OHCI Enhanced Support : No Channels : 64 Speed : 400MHz Expansion Slot(s) PCI0 (1h) : PCI 32-bit +5V PME Full-Length Available (Epox Computer Co Ltd ??? (0080)) PCI1 (2h) : PCI 32-bit +5V PME Full-Length Used (Epox Computer Co Ltd ??? (0087)) PCI2 (3h) : PCI 32-bit +5V PME Full-Length Available PCI3 (4h) : PCI 32-bit +5V PME Full-Length Used (Epox Computer Co Ltd Network Bus Enumerator) PCI4 (5h) : PCI 32-bit +5V PME Full-Length Available AGP (F0h) : AGP 32-bit +5V Full-Length Used Port Connector PRIMARY IDE : None - ATA / None SECONDARY IDE : None - ATA / None FDD : 8251 FIFO - Floppy Disk / None COM1 : Serial Port 16450 - 9 Pin Dual Inline / DB-9 pin male COM2 : Serial Port 16450 - 9 Pin Dual Inline / DB-9 pin male LPT1 : Parallel Port ECP/EPP - DB-25 pin female / DB-25 pin female Keyboard : Keyboard - PS/2 / PS/2 PS/2 Mouse : Mouse - PS/2 / PS/2 USB0 : USB - None / None Performance Tips Notice 224 : SMBIOS/DMI information may be inaccurate. Tip 2511 : Some memory slots are free so the memory can be easily upgraded. Tip 2536 : System has no SMBus/i2c/BMB bus support. Tip 2 : Double-click tip or press Enter while a tip is selected for more information about the tip. *
200Mhz FSB only supported with Athlon Barton Xp 3000+ Well I googled and got my answer. The processor only supports a FSB of 166Mhz. Looks like I'll have to find a 3000+ on ebay or something.
I used to have the 8RDA3G and a barton 2500+ runnning at 2.2Ghz. If you're certain that you do have a barton core, then theoretically you should also be able to reach the same speed. I remember everything except for the FSB was on auto because I was still very new to overclocking. Oh, and I was using Kingston value RAM's too. Try to play around with the settings and do more research. You never know, you might get lucky.
Certainly is a Barton It certainly is a Barton, from my invoice and from the cpu-z report above. I remember unlocking instructions on Tom's hardware and elsewhere. Anyone can point me to this?
Why don't you just use a ram divider to have the ram run at DDR400... No need to OC and it will certainly save you a bunch of trouble if you don't want to OC...
if your mobo bios allows you to up the fsb little by little then rise it slowly. Maybe its not stable at 200fsb but stable at 190fsb, that's still a big jump from the default 166fsb. And there usually shouldnt be any problem running a barton at 200fsb, if you keep the mhz constant
do consider upping the Vcore. note that this will increase the temperature of your processor as well.
i came across a barton few days ago... i ran it at 2300MHZ.. everything stock except the [email protected] perfectly fine.. by the way, it uses apacer DDR400 RAMs..dual channel some more