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! Someone tested overclocking a7v8x-x and amd xp cpu
Wounder if there is normally a stability problem with 10-15% frquency overclocking
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On Sun, 1 Feb 2004 12:04:00 +0100, "None" wrote:
Wounder if there is normally a stability problem with 10-15% frquency overclocking Overclocking at any level is never guaranteed, even a 1% increase may not work. -- Andrew. To email unscramble & remove spamtrap. Help make Usenet a better place: English is read downwards, please don't top post. Trim messages to quote only relevent text. Check groups.google.com before asking a question. |
#3
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=|[ None's ]|= wrote:
Wounder if there is normally a stability problem with 10-15% frquency overclocking I notice from looking at my broken a7v8x, that my working a7v8x-x has less substantial voltage regulating components (smaller, cheaper capacitors and ICs) and a smaller poorly fitted heatsink on the Northbridge. This makes me suspicious of its overclock capability. I swapped and properly fitted the Northbridge heatsink from the bust a7v8x and run my rig perhaps/almost stable at 350 fsb for a month or so, then tried higher and got instability problems. Now my rig doesnt seem to run stable at 333 fsb! I have it quite significantly underclocked at the moment to 300 fsb since it started spontaneously rebooting after days or hours. I was getting all sorts of weird bluescreens running at 333 or 266, though memory tested fine with memtest overnight. I tested alot to find where the problem was, including running apic or pic, turning of L1 and L2 caches, temps reported 40c odd cpu and 31 to 34 southbridge, i tried turning off 1t command rate on the mem, and... everything really. Now it runs stable at 300 fsb with PCI down to 30 Mhz, 1.6v cpu at 1500 MHz, has been online for a week or so, doing lots of work and running Folding @ Home. I love the way my rig runs even underclocked, the OS is tweaked well - I cant feel the difference, it just puts out less DC work units. Ive got a little fan screwed onto the underside of a the copper based cpu heatsink to keep hot air from blowing down over the board and its temps are fine with the cpu running up to over 2000 Mhz, though its default is 1666 Mhz. I think certainly the best overclock for the board is to run the cpu faster (if its unlocked) After loads of fiddling, I dont think overclocking fsb and pci is practical -intresting, addictive.. but one crash is takes so much investigation and recovery that the speed boost cant justify. My board seemed fine running at 300fsb with cpu at 2000 but i got a spontaneous reboot after a day which is why I knocked that down to 1500. Its so complex, I just updated the bios to 1008 since it apperently fixes some problem with wireless mouses - which I have, so I could start a whole new round of testing, the PSU might be flaky... Wounder if there is normally a stability problem with 10-15% frquency overclocking No idea :/ -- ' gathering moss, andy |
#4
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=|[ Creeping Stone's ]|= wrote:
Its so complex, I just updated the bios to 1008 since it apperently fixes some problem with wireless mouses - which I have, so I could start a whole new round of testing, the PSU might be flaky... Crashed after the bios update, so I reassembled the whole rig, and removed a heatsink I bodged onto the southbridge and it seems to have recovered -Running quick again at 320fsb /32 PCI , 1t command control enabled, 4-way interleave, 2-3-2-6 320ddr, XP2000+ x11.5 @ 1838MHz /w quiet cooling mods. If that config lasts, i may be satisfied. -took a little off the optimum supported fsb to ease the chipsets power requirements in the long run. I dont really consider running AthlonXP at 333 fsb overlclocking, since when I bought the chip, Im sure I read some offical documentation (a leaflet in the retail box?) which said 266 was the minimum supported speed -though now it seems to get reported as the only default. Wounder if there is normally a stability problem with 10-15% frquency overclocking No idea :/ today -optimistic -- ' gathering moss, andy |
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