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Upgrading CPU gives memtest errors

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June 24, 2010 8:01:54 PM

Hello,
I am hoping I can get some help. I have a stable system (Abit Fatal1ty FP-IN9 SLI; Intel Core 2 Duo E6600; 2x2048MB Corsair XMS2 + 2x1024MB Corsair XMS2 @ 800Mhz; Corsair 650W PSU; XFX 1GB PCIe video card; Thermaltake HeatSink) which has been properly bios flashed to allow for using 45nm CPU's. I have purchased an Intel Core 2 Quad Q9300 which, according to Abit's website, should be fully compatible with the motherboard once the bios is correctly flashed. When the current CPU is installed, memtest 4.10 runs properly, no errors. With the new CPU, testing either one or all four memory DIMMS causes Test #7 errors. I have verifed in bios the correct 5-5-5-18 timings are set for all 4 DIMMS. Even swapped with another 2x2048MB Corsair XMS2 @ 800Mhz set, which defaults to 4-4-4-12 timings, but same Test #7 errors occur. Am I to just assume then that I have a new CPU with a memory controller issue? Just have never have seen an upgrade to a CPU cause this problem.
Thanks!
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June 24, 2010 8:17:17 PM

Core2 CPUs have no memory controller. has the change of CPU upped your FSB and RAM speed? Are you sure they're still at 800MHZ?
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June 24, 2010 8:29:43 PM

milez,
My bad, thought they did. In any case, I believe the FSB shows 1333Mhz and MEM speed is 800Mhz (at least, in POST). At this time, I do not overclock (though I might in the future).
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June 24, 2010 8:33:05 PM

P.S. the Brand Name & Frequency both report properly: Intel Core 2 Quad CPU Q9300 @ 2.50Ghz / Frequency: 2.50Ghz
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June 24, 2010 8:51:13 PM

test with one module at a time; might need some extra voltage to drive 4 DIMMS maybe?
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June 24, 2010 9:01:06 PM

gamerk316,
was testing with just one module, moving it from slot1 to slot4. still received the Test #7 errors. read somewhere to maybe up the NB voltage, which I bumped up from default 1.20v to 1.24v, but otherwise kept the voltage for the DIMMS at tested level of 1.8volts. would running the voltage settings higher cause stability issues due to the hotter the memory runs?
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June 24, 2010 9:28:46 PM

Forget the 1.8v tested level what ever that is, set the ram voltage to what Corsair says when running at 800mhz 5-5-5-18. Typically Corsair uses 2.0-2.1 for those chips and it's stored in the spd area of the modules.
gamerk316 states correctly extra voltage (actually set to Corsairs spec's) the NB voltage doesn't ususally require any help unless you have 4 chips in and thats usually cpu/nb dependent. good luck
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June 24, 2010 9:40:06 PM

roonj,
got the tested voltage of 1.80v from Corsair's website under the memory kit specifications page. however, I can go back and try moving it up to 2.0v & then run memtest again. I will post some screen pics of the bios if the problem continues.
thanks to all...
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December 28, 2010 10:57:36 PM

Scaveman - did you get asolution to this problem? I am having the same issue with a C2D Quad and would appreciate your guidance.
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December 29, 2010 1:56:23 AM

scaveman said:
roonj,
got the tested voltage of 1.80v from Corsair's website under the memory kit specifications page. however, I can go back and try moving it up to 2.0v & then run memtest again. I will post some screen pics of the bios if the problem continues.
thanks to all...


I actually have Corsair XMS2 memory, and depending on which batch you recieved, you will run it at different voltages. I have two sets, one which runs at 1.8v, and another which runs at 1.9v. The voltages are listed on the RAM.
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December 29, 2010 5:51:34 AM

At the BIOS main menu, if you press [Ctrl]+[F1], does it enable additional options under the various related sub menus?
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