Defective RAM?

[PSenapus]

Hello.
 

I bought new RAM last monday, arrived today (you guessed it, I live in Italy).
Got a Corsair Vengeance Pro kit 2x 4GB 2133MHz CL9 (CMY8GX3M2B2133C9R)
Installed it, XMP enabled and it is set to run at 2000MHz instead of 2133MHz. (latency and voltage is right as advertised though 9/11/11/31 1.65)
Manually set it to 2133MHz, run Prime95, after 8 hours I get 2 failures detected.
Set it back to 2000MHz, run Prime95 for 7 hours, 2 more failures.

Everything was stable before the upgrade.

Am I doing something wrong or should I just RMA it?

It is the first time I got OC tested RAM

 

Specs:

Enermax Fulmo ST

Gigabyte GA-Z87X-UD3H

Core i5 4670K @stock

Gigabyte Radeon R9 280X @stock

Enermax LIQTECH 240

Plextor M6s 256GB

Seagate ST1000DM003
Cooler Master V700

 

P.S. Fuck my life, I'll be away for for work a week next week and I'm not sure if sending it to the dealer is possible when I come back. I hate this.

[lani100]

I would try to run it at stock settings with xmp disabled. And test again.

If it fails again send it back.

[MegaDave91]

Run memtest86 overnight

[PSenapus]

I would try to run it at stock settings with xmp disabled. And test again.

If it fails again send it back.

What is the point?

Stock with XMP disabled is 1333 9/9/9/24

Exactly the same specs the ram I've upgraded from were.

Aren't they supposed to run properly at 2133 9/11/11/31?

[pollcat38]

 

Hello.

 

I bought new RAM last monday, arrived today (you guessed it, I live in Italy).

Got a Corsair Vengeance Pro kit 2x 4GB 2133MHz CL9 (CMY8GX3M2B2133C9R)

Installed it, XMP enabled and it is set to run at 2000MHz instead of 2133MHz. (latency and voltage is right as advertised though 9/11/11/31 1.65)

Manually set it to 2133MHz, run Prime95, after 8 hours I get 2 failures detected.

Set it back to 2000MHz, run Prime95 for 7 hours, 2 more failures.

Everything was stable before the upgrade.

Am I doing something wrong or should I just RMA it?

It is the first time I got OC tested RAM

 

Specs:

Enermax Fulmo ST

Gigabyte GA-Z87X-UD3H

Core i5 4670K @stock

Gigabyte Radeon R9 280X @stock

Enermax LIQTECH 240

Plextor M6s 256GB

Seagate ST1000DM003

Cooler Master V700

 

P.S. Fuck my life, I'll be away for for work a week next week and I'm not sure if sending it to the dealer is possible when I come back. I hate this.

 

try cpu oc

 check voltage multi plyer

[PSenapus]

Run memtest86 overnight

memtest running for 8 hours now, 7 tests passed no errors yet.

I've seen Linus saying that the RAM could pass the memtest86 no problems and then fail prime95 no problem. Just how do I diagnose this?

Why does the XMP set the wrong frequency?

[PSenapus]

Update:
Memtest86 detects 1 error after 11 hours.
Faulty RAM?

[PSenapus]

Update 2:
Tested with my old patriot 2x4gb 1333Mhz cl9 6 years old kit and no errors whatsoever in 12 hours.
At least this rules out CPU cache errors...

What do you guys think?
Does anyone have any answer to my previous unanswered questions? ._.