only with 4 ram modules: errors in memtest

Hello,

2times ocz2g8004gk, on the first they write on the ram 1,8V, on the other 1,9.
However, I set it to 2,04:
RAM Voltage: 2,04
Timings: 5-5-5-18
latest BIOS
MSI P45 Neo-F


Safe settings in bios: no change.
With only 3 modules, test 7 passes correct.
As I set 4 modules, no matter which, I get errors

What can I do?

The spec for these, according to newegg, is 2.0 volts, and as you said
with 2 or 3 dimms installed it's fine at that voltage. At the OCZ website,
the voltage is specified at 1.8 with 2.1 EVP.

Try bumping up to 2.1, more modules and larger modules mean more
load on the bus, thus you may need a slight bit more juice. If I read the
specs correctly, these modules are supposed to be safe up to 2.1 volts,
as per the 2.1 EVP feature.

Edit

links researched
http://www.newegg.com/Product/Product.aspx?Item=N82E16820227199&Tpk=ocz2g8004gk
http://www.ocztechnology.com/products/memory/ocz_ddr2_pc2_6400_vista_performance_gold_edition
http://www.ocztechnology.com/produc..._6400_vista_performance_gold_4gb_dual_channel

Is that noth the nb voltage?
Latest Konfig:


Thx!


BIOS: http://img212.imageshack.us/img212/2214/bild13.png
MEMTEST86+: http://img518.imageshack.us/img518/9916/bild12u.png
CPU-Z Memory generell: http://img518.imageshack.us/img518/3325/bild7.png
CPU-ZSlot1: http://img518.imageshack.us/img518/2695/bild8g.png
CPU-ZSlot2: http://img518.imageshack.us/img518/1937/bild9m.png
CPU-ZSlot3: http://img518.imageshack.us/img518/6980/bild10p.png
CPU-ZSlot4: http://img518.imageshack.us/img518/8025/bild11i.png

WORKS WITH 1,9 RAM and 1,2 MCH

THX

All is well now, great. Turns out you needed a little more volts on the MCH?
Good to know.