F3-1600C9D-16GXM and Asus Sabertooth Z77?

[Ryan15000]

So I was having problems with another brand of RAM (which was Corsair CML16GX3M4A1600C9), which kept giving me errors on Memtest86+ on its stock 1333MHz setting as well as XMP settings. The thing was though errors don't pop up right away during the first or second pass (or cycle...whatever you call it), a few errors (maybe 2-4) pop up after that and always happens no matter what the BIOS setting were. So I decided to get the G.Skill F3-1600C9D-16GXM RAM to see if the problem will go away. After inserting the RAM onto the motherboard, having it test for a few hours (6 to be exact) on XMP Profile #1, and with no errors popping up I decided to leave it on overnight to see if it's truly stable. After I come back in the morning and look at the results I see the following errors (I've posted them down below). Am I stressing the RAM (if so can I assume it's still good and okay to leave XMP enabled)? Do I have the BIOS configured properly to function? Is it bad memory? Could it be an overheating issue? I only ask because I've been plagued with this issue (memtest errors and not really comfortable using the RAM if it produces those errors) for awhile now and pretty much stopped using my new build until I get this thing sorted out.

Here's the build:

Motherboard: ASUS SABERTOOTH Z77 LGA 1155 Intel Z77
BIOS Version: 1708
CPU: Intel i5-3570K 3.40GHz
CPU Cooler: Noctua 6 NH-D14
RAM: G.Skill F3-1600C9D-16GXM
PSU: Corsair Gold 850-Watt
GPU: XFX HD 7970 Black Edition 3GB 1000MHz
BLU-RAY/DVD: Samsung Blu-Ray Combo SH-B123L/BSBP
HDD: Samsung 1 TB SATA 3.0 Gb-s 32 MB Cache 3.5-Inch

BIOS settings (with XMP Profile #1 enabled and no other settings changed):

Black Frequency: 100.0
Speed: 1600Mhz
Voltage: 1.500v
tCL: 9
tRCD: 9
tRP: 9
tRAS: 24
tRC: 33
tWR: 12
tRRD: 5
tRFC: 208
tWTR: 6
tRTP: 6
tFAW: 24
tCL: 7
Command Rate: 2t

Memtest86+ Beta version 1 after 22 Hours and 24 Passes (or cycles) of testing gave the following errors:
Tst 5: Pass 8 and 18 000000272f0 - 0.4MB Good: 000000b4 Bad: 00000092 Error Bits: 00000026 CPU: 0
Tst 5: Pass 8 and 18 000000272f8 - 0.4MB Good: 0000008f Bad: 000000e9 Error Bits: 00000066 CPU: 0

[Tradesman]

Could try raising the DRAM voltage slightly in the event the system isn't regulating the voltage correctly, try the set at 1.55 (may also want to try the MC voltage up a bit (believe it's CPUVTT) maybe to 1.12 or so

[Ryan15000]

(believe it's CPUVTT) maybe to 1.12 or so

Wouldn't that be the VCCSA with the Z77 BIOS? Anyways I'll go ahead and try what you suggested.

[Ryan15000]

8 hours and 9 passes (or cycles) later...no errors. All I changed was the DRAM voltage to 1.55. I suppose at this point it's safe to assume my RAM is properly configured? If so I'll go ahead and start a fresh install of my operating system. Thanks again for the help.

[Tradesman]

No problem...on most models of Z77s the CPUVTT is the MC voltage though some comebine it directly to the VCCSA, which is the System Agent Voltage and affects all the pipes in the system , not just the DRAM to MC pipe

[Ryan15000]

No problem...on most models of Z77s the CPUVTT is the MC voltage though some comebine it directly to the VCCSA, which is the System Agent Voltage and affects all the pipes in the system , not just the DRAM to MC pipe

So at this point there's no reason to change the VCCSA at this point since Memtest isn't throwing any errors? Just want to make sure before moving on.

[Tradesman]

Not unless you are having a problem, sounds like the CPUVTT has it covered