Hi, I've bought a pre-overclocked system from PC Specialist, and it seems to be suffering much the same as the Scan rig that was mentioned in this thread: http://forums.bit-tech.net/showthread.php?t=224056 I don't know too much about overclocking, hence me originally paying someone to do it for me, but I was wondering if I could learn from your expertise! My system has been running okay in the couple of weeks that I've had it with just a few occasional bluescreens. It will complete 3DMark benchmarks with no issue, however it's always bluescreened after only 20 seconds or so of running IntelBurnTest ("A clock interrupt was not received on a secondary processor within the allocated time interval"). The same thing happens with Prime95, but you need to leave it a couple of minutes. The system is as follows: Overclocked Intel Core I7-2600K Quad Core (3.40Ghz @ Max 4.80Ghz) Asus® Sabertooth P67 (New Rev 3.0) 16Gb Kingston Hyper-X Genesis Dual-Ddr3 1600Mhz, X.M.P (4 X 4Gb Kit) 1.25Gb Nvidia Geforce Gtx 570 Corsair 650W Tx650 V2-80 Plus® Bronze Coolit Eco Ii A.L.C Fat Boy (Advanced Liquid Cooler) And these are the OC settings in the BIOS: AI Overclock Tuner: manual BLCK Freq: 100.00 Turbo Ratio: enabled (all cores) By All Cores: 46 Internal PLL OverVoltage: enabled Mem Freq: 1600MHz EPU Power Saving: disabled Load-Line Calibration: high VRM Freq: auto Phase Control: extreme Duty Contorl: extreme CPU Current Capability: 110% CPU OverVoltage: manual mode CPU Manual Voltage: 1.40V DRAM Voltage: 1.650V VCCSA Voltage: 1.1250V VCCIO Voltage: 1.150V CPU PLL Voltage: 1.81250V PCH Voltage: auto CPU Spread Spectrum: disabled CPU Ratio: auto Intel Adaptive Thermal Monitor: enabled Intel Virtualization: disabled Intel SpeedStep: enabled Turbo Mode: enabled AMD Turbo Core Technology: disabled Temperatures seem reasonable. It runs about 32 degrees, going up to about 66 running Prime95 on 'full heat mode'. I'd appreciate any advice.
Does it blue screen in games or intensive CPU tasks, if so I'd be contacting the vendor. Your timings look fine as does CPU voltage if i was checking I'd start with the memory
It seems fine in games - and in general use, although I've had it BS a couple of times when using general apps, mostly when I've been doing a bunch of stuff at the same time. I tried dropping the CPU voltage to 1.35 and changing the "By All Cores:" value from 46 to 42 and it seems to have improved things. IntelBurnTest doesn't bluescreen in the five minutes I've left it running for ... does that help any? Obviously it only ramps up to 4200Mhz now rather than the 4600 it went to previously. Temperatures seem much the same.
PC Specialist have a duty to fix this. Get in touch with them, tell them your problem and they will no doubt offer to take the PC back at their cost and tweak the BIOS settings to achieve more stability. Scanning over your settings everything looked OK so it may be the case that the CPU is faulty. Either way PCS should be able fix it if you send it back for repair.
To be honest they may well suggest that - but I'd rather not be without it if it's something I can get sorted, especially now all my data is on it
I have a friend who bought an i5 2500K, pre overclocked to 4.5. He had problems with BSOD, random at first and then more frequent and after changing the rest of the hardware except the pre overclocked mobo/cpu and ram. I dropped the OC to 4.2 and he has had no problems since. Some chips just cant cut it, even of the same type. My 2500K runs happily at 4.8, no probs. I would try to drop the multiplier by 2 or 3 and see if it improves things, you wont notice and real difference in performance, just in benchmarking.
I would very much agree with this, the chip probably needs more volts, or to drop the multiplier, I would suspect the company you purchased it from didn't want to put more the 1.4v through the chip (intel's supposed limit). Either that or a mixture of they didn't do there testing properly.
they probably put together a hundred a week, same hardware, same settings, the odd chip cant take it. I dont believe they put each one through a 24 hour burn test.
Mmm, just turned it up to 44/1.350 and it ran a complete IntelBurnTest sequence on High. Perhaps as you say 46 was just that little too much. I think for the sake of a very slight bit of performance that I'll probably never notice, I'll stick at 44 rather than trying to get 46 stable and pushing the voltage past 1.40. Thanks to all for your advice. Much more use than the vendors forums.
