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#11
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Asrock Conroe E4400 Overclocking problems Part 2
Further info:
Speedstep was disabled but I re-enabled it as it made no difference to the outcome... I tried 270 MHz and 120 MHz PCIE. No POST. Then 270, 121 then 122 MHz. Ok POSTed but got error as XP tried to boot: Reboot and select proper boot device Wierd. Could therefore be affecting the SATA HDD then. Oh well. Back to the drawing board and 269, 120... On Thu, 11 Sep 2008 13:55:19 -0400, "Phil Weldon" wrote: 'Ed Medlin' wrote: There is no need to mess with the PCIE bus anyway. It is not going to help with the OC. I don't understand why it causes a boot failure unless it is somehow tied into the SATA controller or clock generator somehow on your MB. I have never seen a MB that has overclocking capabilities like yours that doesn't have any voltage adjustments. It seems that you are a slight Vcore rise from getting a pretty decent overclock. Slight increases in Vcore sometimes don't raise temps at all, and if they do it is usually minimal. _____ My E4300 that you mentions runs happily at 150%, 2.7 GHz with the CPU core voltage set at 1.250 volts, BELOW the stock speed encoded in the CPU of 1.325 volts. Of course that is on an overclocking friendly EVGA 680i motherboard that has the slightly ridiculous ability to increment CPU core voltage in 0.005 volt steps. The same CPU takes 1.375 volts to run at 3.16 GHz. Even though there are dozens of voltage and speed parameters that can be set in the motherboard, the only necessary one for a stable 150% overclock was increasing the FrontSide Bus speed and setting the Memory Clock to suit the DDR2 used (DDR2-800 or DDR2-1200 in my system.) Phil Weldon "Ed Medlin" ed@ edmedlin.com wrote in message . .. "GAK" wrote in message ... Ok, now have it running at 269 MHz and a PCIE bus at 120 MHz (not used anyway). It runs stable like this but any attempt to reduce the PCIE bus even to 119 MHz results in a boot failure. Wierd. Both Dhrys and Whets are improving linearly. Oh, and the Vcore is still running between 1.200 to 1.21 volts. DRAM timings are as before. Won't need to change these until (and unless) I hit 333 MHz clock speed... There is no need to mess with the PCIE bus anyway. It is not going to help with the OC. I don't understand why it causes a boot failure unless it is somehow tied into the SATA controller or clock generator somehow on your MB. I have never seen a MB that has overclocking capabilities like yours that doesn't have any voltage adjustments. It seems that you are a slight Vcore rise from getting a pretty decent overclock. Slight increases in Vcore sometimes don't raise temps at all, and if they do it is usually minimal. Ed |
#12
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ASrock Conroe E4400 Overclocking problems Part 2
'Cornelius' wrote, in part:
Any suggestions to unlock the potental of the E4400? _____ Where is Part 1? Why are you changing the PCIe speed? If you have a PCIe video card you are certainly using the PCIe bus, and that would be used during boot checks. Could you give a little information about your motherboard, model name and number, for example? Most of us are not as kind as 'Paul', who evidently searched a year of posts to this newsgroup and found a thread that MIGHT have been posted by you. But that thread doesn't show anything from 'Cornelius'. If you go back and read the thread 'Paul' found, you might find some useful advice on what information you should include. Then THIS thread might be more of a diagnostic discussion than a guessing game. Failing that, my suggestion is to get a better motherboard. Phil Weldon "Cornelius" wrote in message ... Have finally got round to investigating the problem. Repalced ram with Crucial DDR2 667. It will now POST to 256 MHz with PCIE Aysnc at 114MHz. NB There is a PCI bus lock so that keeps it at 33.3MHz anyway. DRAM timings are from SPD (makes no diff if not). These are at 255.8 MHz and a 1:1 ratio: 3,3,3,9,12 What I think is killing the overclock potential is the Vcore - I can only use Auto or High usefully (haven't tried Low). Thishas resulted in a Vcore pretty much the same as stock at 200MHz; 1.2v Any suggestions to unlock the potental of the E4400? |
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