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Strange memory problems.

post #1 of 5
Thread Starter 
So, I have had quite a few problems with my memory recently, and I need help.

Let me describe my story:

Memory: Corsair Low-Profile 1600mhz 9-9-9-24 2x4GiB (XMP profile 1, running at 1600mhz 9-9-9-24, never overclocked it).
CPU: i5-3570K
Motherboard: Gigabyte GA-Z77-D3H

My memory has been in and out of my PC for several reasons over the years, and occationally I like to run a memtest. About a year and a half ago, the memory test failed, so as any stupid, broke, person would, I ignored it. System lockups have become more frequent over that time, and the memtest errors have gotten more severe. The memtest errors were always consistent, happened every time, in the same place, with the same amount of errors for retests on the same day. I discovered that the memory has a lifetime guarrantee, so I decided to RMA it. Because I can't live without my PC however, I brought an identical kit to my current one, so that I don't have to do without my PC for the time the RMA takes (I needed 16GB anyways). I recieved this kit today.

I removed the old memory and replaced it with the new memory in the same slots. The PC failed to post with a continuous beep-beep-beep. I then swapped the two memory modules in the new kit around, now I got POST. I head to memtest, and these new modules fail too, at the same location of RAM (my memory is hazy, bit it's close, around the 200MB mark). Crap, I think, it's not the ram. I enter the BIOS setup, and fiddle around a bit. The first thing I tried was setting "Performance Enhance" in the memory section of the mobo to "Normal" from "Turbo" (the default, I never touched this setting before). The memory now passes memtest. This is really strange to me, because the RAM is running at it's advertised timings and clock speed, why should a random BIOS setting, let alone one turned on by default affect it?

To test again, I turned the setting back to "Turbo", the original setting. The memory still passes. I am now running my full 16GIB of ram through memtest, and it does not fail, even with "Performance Enhance" set to "Turbo".

How can toggling a setting, then changing it back, turn a consistent memtest fail, to a memtest pass? I am confused, and any light shed on this situation would be welcome.

Thanks,
RX14.
Edited by Rx14 - 9/25/15 at 11:17am
RX14's PC
(17 items)
 
  
CPUMotherboardGraphicsRAM
i5-3570K Gigabyte GA-Z77-D3H AMD Radeon HD 7850 2GB OC Edition Corsair Vengance 2x4gb CL9 
RAMHard DriveOptical DriveCooling
Corsair vengance 2x4GB CL9 SanDisk Extreme 120gb ASUS DRW-1814BL (IDE --> SATA) CoolerMaster Hyper 212 Evo 
OSMonitorMonitorMonitor
Arch Linux Samsung SyncMaster 2343bw 2048x1152 Novatek 563A 1280x1024 Dell Ultrasharp 2407WFPb 
KeyboardPowerCaseMouse
Monterey K108 Coolermaster GXLite 500W CoolerMaster HAF 912 Plus Novatech NOV-MOUSE2 
Audio
SoundMagic E10S 
  hide details  
Reply
RX14's PC
(17 items)
 
  
CPUMotherboardGraphicsRAM
i5-3570K Gigabyte GA-Z77-D3H AMD Radeon HD 7850 2GB OC Edition Corsair Vengance 2x4gb CL9 
RAMHard DriveOptical DriveCooling
Corsair vengance 2x4GB CL9 SanDisk Extreme 120gb ASUS DRW-1814BL (IDE --> SATA) CoolerMaster Hyper 212 Evo 
OSMonitorMonitorMonitor
Arch Linux Samsung SyncMaster 2343bw 2048x1152 Novatek 563A 1280x1024 Dell Ultrasharp 2407WFPb 
KeyboardPowerCaseMouse
Monterey K108 Coolermaster GXLite 500W CoolerMaster HAF 912 Plus Novatech NOV-MOUSE2 
Audio
SoundMagic E10S 
  hide details  
Reply
post #2 of 5
It could be that the board was giving some improper timings to the RAM and the Turbo mode corrected them. Maybe try comparing the sub-timings between the Turbo mode and non-Turbo.

Maybe "going Turbo" isn't such a bad thing afterall.... tongue.gif

post #3 of 5
Thread Starter 
That's strange however, because it was broken on Turbo before, worked on Normal, but putting it back to Turbo doesn't reproduce the problem. I have left it on Normal mode just in case...
RX14's PC
(17 items)
 
  
CPUMotherboardGraphicsRAM
i5-3570K Gigabyte GA-Z77-D3H AMD Radeon HD 7850 2GB OC Edition Corsair Vengance 2x4gb CL9 
RAMHard DriveOptical DriveCooling
Corsair vengance 2x4GB CL9 SanDisk Extreme 120gb ASUS DRW-1814BL (IDE --> SATA) CoolerMaster Hyper 212 Evo 
OSMonitorMonitorMonitor
Arch Linux Samsung SyncMaster 2343bw 2048x1152 Novatek 563A 1280x1024 Dell Ultrasharp 2407WFPb 
KeyboardPowerCaseMouse
Monterey K108 Coolermaster GXLite 500W CoolerMaster HAF 912 Plus Novatech NOV-MOUSE2 
Audio
SoundMagic E10S 
  hide details  
Reply
RX14's PC
(17 items)
 
  
CPUMotherboardGraphicsRAM
i5-3570K Gigabyte GA-Z77-D3H AMD Radeon HD 7850 2GB OC Edition Corsair Vengance 2x4gb CL9 
RAMHard DriveOptical DriveCooling
Corsair vengance 2x4GB CL9 SanDisk Extreme 120gb ASUS DRW-1814BL (IDE --> SATA) CoolerMaster Hyper 212 Evo 
OSMonitorMonitorMonitor
Arch Linux Samsung SyncMaster 2343bw 2048x1152 Novatek 563A 1280x1024 Dell Ultrasharp 2407WFPb 
KeyboardPowerCaseMouse
Monterey K108 Coolermaster GXLite 500W CoolerMaster HAF 912 Plus Novatech NOV-MOUSE2 
Audio
SoundMagic E10S 
  hide details  
Reply
post #4 of 5
Thread Starter 
So I tested again, with "Normal", and got memory errors again. After removing the GPU, memtest passes, what in the heavens is going on!
RX14's PC
(17 items)
 
  
CPUMotherboardGraphicsRAM
i5-3570K Gigabyte GA-Z77-D3H AMD Radeon HD 7850 2GB OC Edition Corsair Vengance 2x4gb CL9 
RAMHard DriveOptical DriveCooling
Corsair vengance 2x4GB CL9 SanDisk Extreme 120gb ASUS DRW-1814BL (IDE --> SATA) CoolerMaster Hyper 212 Evo 
OSMonitorMonitorMonitor
Arch Linux Samsung SyncMaster 2343bw 2048x1152 Novatek 563A 1280x1024 Dell Ultrasharp 2407WFPb 
KeyboardPowerCaseMouse
Monterey K108 Coolermaster GXLite 500W CoolerMaster HAF 912 Plus Novatech NOV-MOUSE2 
Audio
SoundMagic E10S 
  hide details  
Reply
RX14's PC
(17 items)
 
  
CPUMotherboardGraphicsRAM
i5-3570K Gigabyte GA-Z77-D3H AMD Radeon HD 7850 2GB OC Edition Corsair Vengance 2x4gb CL9 
RAMHard DriveOptical DriveCooling
Corsair vengance 2x4GB CL9 SanDisk Extreme 120gb ASUS DRW-1814BL (IDE --> SATA) CoolerMaster Hyper 212 Evo 
OSMonitorMonitorMonitor
Arch Linux Samsung SyncMaster 2343bw 2048x1152 Novatek 563A 1280x1024 Dell Ultrasharp 2407WFPb 
KeyboardPowerCaseMouse
Monterey K108 Coolermaster GXLite 500W CoolerMaster HAF 912 Plus Novatech NOV-MOUSE2 
Audio
SoundMagic E10S 
  hide details  
Reply
post #5 of 5
Did you compare the settings between normal and turbo mode, as in what changes when turbo is activated?
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