Overclocking GSkill X Series 1866 8GB

[chessmaster942]

I'm attempting my first overclock, and I've currently overclocked my AMD A8-3850m to 3.13GHz and I'm trying overclock my RAM (GSkill X Series 1866 8GB x2) as well, but after a run of Memtest I've only got a bad memory address. How can I work this out? The voltage seems fine, and the now overclocked APU can handle it, so whats wrong, and how can I fix it? My MOBO is the ASUS f1-a75m-pro with EZ/Advanced Mode (I'm using advanced mode).

==EDIT==
Just tried to boot to linux mint 13, from hdd uefi and live disc, but both fail...
I reverted back to my BIOS profile before overclocking, and it works fine. Cause is overclocking incorrectly, don't know how to fix it.

Here are the stats for memtest 86 and my BIOS:

==MemTest 86 Display==

AMD FUsion @ 3103 MHz
L1 Cache: 64K 50867 MB/s
L2 Cache: 1024K 18469 MB/s
L3 Cache: None
Memory: 7672M 4210 Mb/s
IMC: AMD A8-3850 APU with Radeon(tm) HD (ECC : Disabled)
Settings: RAM: 400 MHz (DDR-800) / CAS : 9-11-11-28 / DDR3 (64 bits)

WallTime: 1:02:48
Cached: 7672M
RsvdMem: 2484K
MemMap: e820
Cache: on
ECC: off
Test: std
Pass: 1
Errors: 1
ECC:
Errs: 0

Tst: 8
Pass: 0
Failing Address: 0005c960100 - 1481.3MB
Good: aaf67ac3
Bad: aaf67a83
Err-Bits: 00000040
Count: 1
Chan:

==BIOS Overclock Tuner==

Target CPU Speed : 3103MHz
Target DRAM Speed : 1996MHz

APU Frequency : 107
Memory Frequency : DDR3-1997MHz
Memory Stock Frequency : DDR3-1866MHz
APU Multiplier: Auto

=BIOS Information=

BIOS Version: 0603 x64
Build Date: 06/08/2011

CPU Information: AMD A8-3850 APU with Radeon(tm) HD Graphics
Speed: 3130MHz

Memory Information:
Total Memory: 8192MB (DDR3)
Speed: 1996

 

[moocow]

Have your raised the memory voltage yet?

What sort of timings are you running, and which particular kit is it?

 

[chessmaster942]

RAM Timings And Voltage

I haven't touched the RAM voltage, I didn't think I had to, as it is set to "Auto".
The RAM timings, according to my BIOS:

CAS Lantency:
JEDEC: 11
EXT #1: 9
EXT #2: 9

RAS to CAS:
JEDEC: 11
EXT#1: 10
EXT #2: 10

RAS Precharge:
JEDEC: 11
EXT#1: 9
EXT #2: 9

 

[chessmaster942]

Just figured I'd mention it, but by "boot failure" I mean that it boots to hard drive, and from there it drops to an initfsram terminal, saying that the '/' drive took to long to respond.

 

[moocow]

Since you are running the memory out of spec you might want to try and raise the voltage to see if that helps.

If the sticks are stock at 1.5v, manually input something like 1.6v to see if they boot properly.

 

[chessmaster942]

By reducing the APU frequency to 106 I've got a stable overclock with the RAM voltage at 1.65v. I suspect something to do with the APU Multiplier, I'll keep messing with that.