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I just installed Kingston HyperX PC4000 memory in my system, I'm running a P4 2.4C@3Ghz (250Mhz FSB) I'd like to run my system at a 1:1 ratio (reason for buying PC4000), problem is I can't select 500Mhz for my memory, 400 is the highest I can select, I did a search on google and a lot of people are running these speeds with the exact same system, please share your experience,Mike

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I tried setting the memory at 400Mhz with a 250Mhz FSB CPU, the system won't even boot, normally I get a voice warning telling me what's wrong, not this time, plugging out the power cable didn't even help, I had to clear my CMOS in order to get the system to boot, it then boots with a standard 200/200Mhz FSB. I tried setting the FSB back at 250 but it wouldn't boot with that, setting the FSB at 250 and memory at standard results in 166Mhz memory speed.I did download the CPU-z to monitor my speeds, it recognizes my memory as Kingston PC3200, I think this is correct since PC4000 is overclocked PC3200 memory isn't it??It would be a shame to run these modules at 400Mhz which is not even possible when setting my CPU FSB at 250 (P4 2.4C@3Ghz).Any suggestions would be much appreciated, thanks,Mike

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When you say it won't boot, do you mean to the o/s or that it won't even POST?I wonder if bumping the DDR voltage would be of any help?

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When I said the system wouldn't boot, I meant it won't even post.I'll try upping the voltage a bit but the dimms are supposed to be tested at stock(2.6V)at 500Mhz, but I'll try anyway, thanks,Mike

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Go to http://www.overclockers.com and join the forums for that site. There is a section for Memory amongst others. The guys over ther are pretty helpfull and knoleageble. When u start upping voltage and messing with FSB then you wanna be carefull cause u caqn fry ur hardware real easy. I dunnit a few times and dont feel to hot. :0BTW, best performance improvement I found so far is a RAID-0 array using SATA drives.

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Mike,Don't be afraid to give the memory atleast 2.8v.Also, what timings do you have set for the memory? PC4000 is rated to run at 3-4-4-8

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What improvements do you note with your SATA RAID? Is it just file opening speed or is there an overall system improvement? With 1G of memory, my page file is not under heavy use so I wouldn't think that general operation would be improved that much, however FS does tend to reference the scenery library quite a bit...What SATA drives did you go with? Are you running them off of the P4P800 VIA Raid controller or do you have a PCI SATA RAID card?

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Western Digital Raptor are fast enough from the box with 150 megs per second @ 10,000 RPM. If you use them in RAID-0 array (where two HD act as one; albeit one drive reads data while the other writes) then you got yourself a ballgame. Either using a WD Raptor SATA drive alone or two normal 7,200 RPM ATA drives in a RAID-0 array your gonna notice a more fluid FS9 fer shure.:)No matter how much RAM youve got, Windows likes to use the page/swap file, and FS9 needs to read the terrain files anyway. So better HD performance is highly recomended. I run FS9 with all the sliders up and still get 30+ FPS. If you wanna try something cool, make a RAM disk (put aside a certain amount of memory to be used as virtual HD) and run FS9 from there. I used to do this when I had a Macintosh, Im shure it can be done in a PC also! Promise makes a nice RAID PCI card but I use the onboard RAID controller that came with my MoBo. Now, if I only had dual channel memory ...Try it, youll like it ;)

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I have a p4 3.0gig with 1gb kingston hyperx pc4000 on a p4p800I just used the auto overclocking feature to increase it by 10%, anything above and it wont boot.Speed.

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Well, that's my point speed, I have overclocked my P4 2.4C to 3Ghz by increasing the FSB from 200 to 250Mhz.I have been running this overclock for a couple of months (very stable) but I used PC2700 dimms running at 166Mhz, now I bought these PC4000 dimms in dual channel mode and I can't get the speed of the memory above 200Mhz, everything above that and the system won't boot, these dimms are tested by kingston to work at 250Mhz so I really don't know what's going on, I tried increasing the voltage of the cpu and the memory but it makes no difference.There must be someone on this forum that uses PC4000 memory, please help me to get this to work, thanks,Mike

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Mike,I use PC4000 Memory also. Like I said above, check to ensure the timings are set to 3-4-4-8. If they're any lower you're going to have problems.Also update the BIOS if you're not already running the latest.

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Thanks, I checked the timings and they are set at 3-4-4-8-8.Could you please post your exact bios settings like voltage etcThanks,mike

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Hi Mike,I have my memory voltage set to 2.8v, timings at 3-4-4-8. When I reboot I'll get other particulars :)

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Hi MikeA few questions: Your 333 config was stable? You exchanged the 333 to 400mhz-modules all at once? At that point your RAM settings in the BIOS were still set to your personal settings? If the answer is yes 3x, it could be related to 'deep' RAM-BIOS settings. A possible workaround is, to boot your PC with one of your 'old' modules. Go into the BIOS and set RAM settings back to 'controlled SPD,' make it nice and 'conservative' again to then let the comp reboot. Go into safe mode or whatever to turn your computer off asap (without having to stress the power button). Unplug..!! Put your new modules in again. Plug in... Boot... Hope for the best... Let it boot to windows once before you restart to do BIOS tweaking. Have a flight at standard settings, test it a little. Only up voltages very cautiously, 2.8V sounds like a lot. If, it's better to also get a nice, cool case. In case, also buy the best power supply available. Another way is to put the RAM-modules in one by one. This way, it's also great to see your machine become a rocket, once dual channel gets enabled. Just a few ideas..Kind regards Jaap

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Mike,If your CPU/RAM ratio is 1:1 and you are overclocking the CPU internal clock from 200Mhz to 250Mhz, then your CPU is running at 12 x 250Mhz = 3.0Ghz. I've heard that the 2.4C P4 is a very good overclocker, but not all CPU core samples are equally good. At 250Mhz, your FSB is overclocked to 250Mhz x 4 = 1Ghz. Your RAM would be at 250Mhz x 2 = 500Mhz, so I don't understand your question. You already are running your memory at 500Mhz if you are using the 1:1 ratio in your BIOS.If you are not and can't POST at 1:1 and at 250Mhz CPU clock, then perhaps you might need more cooling in your case and/or for the North bridge chip and CPU on your motherboard. Also, you might need a bigger power supply (you did not provide full specs of your rig). Other than that, the problem could simply be your sample CPU or the memory module itself.Good luck,David

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