Memory won't run at 1066 MHz

Hello, I've just bought a new pc, and I believe it's not performing how it should, I've noticed this primarily in games and benchmarks. People with nearly the same configuration as me get more frames , scores, etc.

Here is the specs:


QuadCore Intel Core 2 Quad Q6600, 2400 MHz (9 x 267)
Gigabyte GA-X48-DQ6
4 GB (2gb + 2gb) Mushkin 991599 (996599) PC-8500 DDR1066 MHz
Sapphire ATi Radeon HD 4870X2 2 GB GDDR5

I run Vista Ultimate 64 bit SP1 with all the latest drivers for everything.

A killer configuration it is...but something's just not right with it.
The first thing I noticed is the memory runs at DDR-800. 3DMarkVantage as well as Everest say so, for both modules.
Note, this motherboard comes with a lot of energy saving, cpu downclocking utilities and I've disabled both the
Dynamic Energy Saver in windows as well as ALL the features in the bios (C1E, EIST, etc...) that could be downclocking
the CPU, FSB, memory, what not...That's the first thing I did. But no matter what I do it won't run at 1066, but the bios lists the normal operating frequency of the memory as 1066, next to it is the memory frequency set, which is also 1066, but everything in windows says it's running at 800. The modules are in dual channel.

Also, I found something in CPU-Z which I think could help:







If anyone could tell me where to start that would be great.
Thanks!

What to say, I've got about the same problem... but with ep43, I've got the 1066, 2x2g, bios said it's 800, windows the same.. still looking for answers just like you.

In Some boards, like M2N-SLI Deluxe (My board in this case), the native support for 1066 Memory modules are disabled o unspecified.

I test with 2 1066 DDR2 Modules (Corsair Dominator), with a Phenom 9950 CPU, these modules initially works at 800 Mhz, but I move the timings and voltage, checking in the memory manufacturer specifications (in this case 5-5-5-15 and 2.1V using the latest BIOS upgrade.)

I hope that this help You.

I'm planning to buy 1066mhz, I've the M2N-Sli Deluxe, will it runs at 1066mhz 5-5-5-18 ?

http://www.tigerdirect.ca/applicat [...] CatId=3413

Thank you !

The voltage maybe isn't the correct, check if you mobo support the RAM to 1066...if don't support....sorry

Ok, so the problem maybe is the configuration, the BIOS or in some mobos, the 1066 speed is only supported with socket AM2+ or intel equivalent....

Yes, some moths ago I have 1066, and this don't work with a X2 6400+, the speed only go to 1066 when change for the 955....but this is a AMD plataform....in intel i don't know...