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help a noOb. p4 640 OC.

post #1 of 4
Thread Starter 
This is my first OC and I'm trying to test the limits of my new system.

Basic rundown:
Prescott 640
ECS (Elite) 945P-A v3.0 mobo
3GB DDR533 (2x1GB Kingston, 2x512MB Samsung)

So far I've managed to get the system up to 220MHz FSB
anything above that and system won't POST. (System hangs, then reboots to 'safe' BIOS settings).

Then I figured out how to get my FSB:RAM 1:1 theoretically giving me up to 266MHz, but still, it's a no go above 220MHz.

I've tried adding a step of voltage to the CPU, no good.

Only thing that I can immediately see that might be screwing me up is that my mismatched RAM is running different timings. (Kingston vs. Samsung) but I don't really know how to decipher this part. CPU-Z gives me readings for 200/266/266MHz (don't understand this). The only difference in the timings between brands is teh tRAS and tRC. (I've also tried overriding SPD settings which should give me uniform timings right?)

Or,
Maybe I'm just missing something in BIOS. (OR, maybe it's my budget board...)

Either way, I understand the Prescott 640 to be a good OC'er and I'd love to tinker with it.

any suggestions appreciated.
post #2 of 4
Thread Starter 
few other notes (may or may not matter)

at 220MHz, system seems stable with my average usage (24hrs) including prime95 tests.

Updated BIOS

Rosewill cooler. (CPU 32/48*C idle/load)



Just ask if I'm missing any info needed for possible diag.

thanks
post #3 of 4
Quote:
Originally Posted by icarusdown View Post
This is my first OC and I'm trying to test the limits of my new system.

Basic rundown:
Prescott 640
ECS (Elite) 945P-A v3.0 mobo
3GB DDR533 (2x1GB Kingston, 2x512MB Samsung)

So far I've managed to get the system up to 220MHz FSB
anything above that and system won't POST. (System hangs, then reboots to 'safe' BIOS settings).

Then I figured out how to get my FSB:RAM 1:1 theoretically giving me up to 266MHz, but still, it's a no go above 220MHz.

I've tried adding a step of voltage to the CPU, no good.

Only thing that I can immediately see that might be screwing me up is that my mismatched RAM is running different timings. (Kingston vs. Samsung) but I don't really know how to decipher this part. CPU-Z gives me readings for 200/266/266MHz (don't understand this). The only difference in the timings between brands is teh tRAS and tRC. (I've also tried overriding SPD settings which should give me uniform timings right?)

Or,
Maybe I'm just missing something in BIOS. (OR, maybe it's my budget board...)

Either way, I understand the Prescott 640 to be a good OC'er and I'd love to tinker with it.

any suggestions appreciated.
you could try takeing out the 2x512 and o/c 2x1 witch is better for ocing,imo
The little beast
(15 items)
 
  
CPUMotherboardGraphicsRAM
i3 3320 BIOSTAR TZ77A ONBOARD 4 x2 (8) GIGS 1600"s OF RED TRACERS 
Hard DriveOptical DriveCoolingOS
WESTERN DIGITAL 500 GIG AAKS 2X Lite on dvd-rw burners GAMEMAXX 300 BY DEEP COOL win7 64 bit PRO 
MonitorKeyboardPowerCase
ACER 23 LED,LCD labtecc- keyless key board ocz 700 watt STEALTH X STEAM RAIDMAX DIRKTOOTH: "SMILODON" 
MouseMouse PadAudio
microsoft wireless stock ONBOARD 
  hide details  
Reply
The little beast
(15 items)
 
  
CPUMotherboardGraphicsRAM
i3 3320 BIOSTAR TZ77A ONBOARD 4 x2 (8) GIGS 1600"s OF RED TRACERS 
Hard DriveOptical DriveCoolingOS
WESTERN DIGITAL 500 GIG AAKS 2X Lite on dvd-rw burners GAMEMAXX 300 BY DEEP COOL win7 64 bit PRO 
MonitorKeyboardPowerCase
ACER 23 LED,LCD labtecc- keyless key board ocz 700 watt STEALTH X STEAM RAIDMAX DIRKTOOTH: "SMILODON" 
MouseMouse PadAudio
microsoft wireless stock ONBOARD 
  hide details  
Reply
post #4 of 4
Thread Starter 
just attempted with 2x1GB only in single channel.
no good.
tried turning off all the other bios features that might interfere with OCing as well.
Still not able to get over 220.

anything else I should be looking for?
My system only says 'Overclock Failed' no details as to why...
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