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How to test ram?

post #1 of 3
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I built my rigs with the ram in the wrong slots. I got the systems (2600k and 2500k) to 4.8GHz. They were folding along with no issues and life was good. I realized the ram was wrong, so I put them in the correct slots. I made no other changes and my ftp dropped a good amount.

After two days of folding, I'd get an error that the wu had failed. This happened on both rigs. I ran memtest for 12 hours with no errors. I tried folding again and I got the same error. I switched the ram back, ftp goes up, but no failed units for the past two weeks.

I'd like to get these rigs folding a little faster, so I want to get this straightened out. I tried a voltage bump for the ram, but it didn't seem to change the error.

Can you point me in the right direction? Thanks
Farragut's Folly
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Venomous X
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Farragut's Folly
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Water Scout
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Venomous X
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CPUMotherboardGraphicsRAM
2500k 4.8 1.43v and rising ASRock P67 Extreme6 HD 5830 G Skill Ripjaws X 2133 
Hard DriveCoolingOSMonitor
WD Caviar Green 750GB Noctua D-14 Ubuntu 10.10 64 bit Acer G205HBbd 
PowerCase
Seasonic x750 HAF 932 
CPUMotherboardGraphicsRAM
2600K 4.8ghz 1.39v ASRock Extreme6 GTX460 4Gb 2133 
Hard DriveOS
500 mb Linux Mint 64 bit 
CPUMotherboardRAMHard Drive
2600K 4.6ghz 1.35v ASRock Extreme4 2x2Gb 1600MHz 250 GB 
OS
Linux Mint 64 bit 
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post #2 of 3
http://www.overclock.net/t/146790/memtest86
Deus Ex Machina
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Deus Ex Machina
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post #3 of 3
Sounds like for whatever reason, your RAM wants to run in the slots that you put them in?

I remember my system didn't even post (i7 920) when I put my RAM in the wrong slots...
 
F@H
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F@H
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CPUMotherboardGraphicsRAM
Core i7 920 @ 4.0ghz EVGA x58 132-BL-E758-A1 2x EVGA 460 1 GB G.SKILL 3 x 2 GB 
Hard DriveOSMonitorKeyboard
Mushkin 40 GB SSD / WD Black 1 TB Windows 7 Home Premium 64-bit DCLCD 20.1" Logitech G15 
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Antec TP 750 Antec 900 Logitech G5 
CPUMotherboardRAMCooling
i7 2700k ASUS Maximus Gene-Z z68 G.Skill 2133mhz Noctua NH-D14 
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Ubuntu 10.10 BFG 650 Silverstone TJ08-E 
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