Memtest86+ single error Dual Channel

dfk

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Dec 23, 2013
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Trying a new stick after returning a faulty one and I still get a single error after 3 pass on Dual Channel mode. I left it on and there was no more errors after 4th pass, total test time was 4 hours, cpu temp was 50-52C. I ran it again and the error appeared again on the first pass:
Tst 9 Pass 3 Failing Address 00085001e04 2128.0MB Err-Bits 08000000 Count 1 Cpu 0
Tst 9 Pass 1 Failing Address 00085001e04 2128.0MB Err-Bits 08000000 Count 1 Cpu 0

I also tried using my rig normally for hours and no application crashes/blue screen.

Should I trust memtest86+? what other diagnostic should I run? not sure which is safe to use as I've only used memtest.

Should I RMA both RAM again? I previously used 1x4GB for a month with no memtest errors/bsod. Could it be cpu memory controller? bent pins on motherboard?? My psu/mobo/ram is new.

i5 4590
Asus H97-pro gamer
2x 4GB DDR3 1600 KVR16N11
Seasonic s12II 620
CM Hyper 212x

Both RAM are identical, BIOS RAM settings at default.
Ram: DDR3 1600 - Bclk:99
Timings: CAS 11-11-11-28 @ 128-bit