XMP profile

Richard William · 29 Jun 2015 at 06:55

Hi I'm running 16gb (2x8gb) Avexir core ram 2133mhz, when it's running at it's base 1600 it's fine the system is rock solid if I change it to it's XMP profile I get a warning as the system boots "boot failure due to system overclock". I'm not changing anything manually as I haven't got the experience to do so any help, advice, would be appreciated.

full system spec is.

Intel 2nd Gen i7 sandybridge 2600k 3.5Ghz
Gigabyte z68 G2 sniper
Gpu: 4gb Msi R9 290 Pro
16gb (2x8gb) Avexir core ram 2133mhz
Psu: 700w coolermaster silent pro
SSD: Crucial MX100 250gb
HHD: Samsung F1 1TB
Cpu cooling: Corsair H100 fitted with Silverstone SST-FQ121 FQ Series 1225 PWM Fans
Gpu Cooling: Corsair H50 with nzxt g10

Silent_Scone · 29 Jun 2015 at 08:50

The memory isn't stable, been awhile since I've used Sandy but you need to increase your VCCSA voltage, try 1.15v and make sure DRAM voltage is correctly applied once you apply XMP.

Richard William · 29 Jun 2015 at 16:16

Hi thanks for the input, I have just managed to recover the system a second time after it crashed last week, the only way I've been able to do so is to re flash the bios with the latest revision. Will try increasing the voltage and see what happens.

One question, I am able to access the bios when the fault occurs and reset to its default settings but this does not seem to cure the fault, the only way I'm able to do so is by using the usb memory stick and re flashing the BIOS does this suggest there might be a problem with the BIOS itself?

lude1962 · 29 Jun 2015 at 16:46

silly question but can the chip support 2133 mem?

Richard William · 29 Jun 2015 at 16:57

have checked the MOBO specs, they seem to confirm that it can.

Richard William · 1 Jul 2015 at 17:51

lude1962 said:
silly question but can the chip support 2133 mem?

Hi have just realised you where referring to the CPU, memory controller, not the MOBO, have just checked the spec and you are correct it will not support the 2133mhz thanks for the heads up, I'm on a steep learning curve. Will it cause any problems running the ram at the lower speed?

lude1962 · 1 Jul 2015 at 18:37

Richard William · 1 Jul 2015 at 18:49

thanks for the help.

Richard William · 1 Jul 2015 at 19:19

Just had a thought, please forgive me if this is a stupid question but I'm fairly new to building or altering a PC. The ram is capable of running at 2133mhz, can I alter the required settings I.E cas, voltage, timing to allow the ram to run at it's highest speed or am I restricted to 1600mhz by the CPU memory controller which on the I7 2600k is a max of 1600mhz.

Gabbatek · 3 Jul 2015 at 08:25

sandy can only run 1600 i thought

David Bisset · 3 Jul 2015 at 09:54

You can go well over 1600MHz on Lynnfield so sandy will run higher. Unless you mean official Intel spec? In which case Haswell can only run 1600MHz too

Richard William · 6 Jul 2015 at 11:11

Ok gents please treat me gently here as I’ve already mentioned I am new to this whole scenario…
Yes I was referring to the intel spec for the CPU memory controller, it specifies 1600mhz as being the highest supported memory speed.
1. Should I still be able to alter the BIOS memory settings to allow the Ram to run at its spec 2133mhz?
2. Will I have to alter them manually? As I’ve mentioned just enabling the XMP profile stops the system booting.