Overclocking with mismatched rams

[Hussain]

Kindly tell me if i will be able to overclock my venice 3800+ with stock fan and mismatched ram i.e. i have the following rams.

RAMS:
1. 2X256 ddr 333
2. 512 ddr 400

SYSTEM SPECS:
CPU
VENICE 3800+

Motherboard
MSI K8n NEO2 Platinum

Graphics Card
x850pro

Memory
512 400ddr; 2x256 333ddr

Hard Drive
250gb wd; 80gb samsung

Optical Drive
Sony DVD Writer; liteon DVD Rom

Power Supply
Channel 400W

Sound Card
Creative X-fi

Operating System
xp media center edition 2005

If i will be able to overclock than a walkthrough of how to do it shall be much appreciated.

Thanx

P.S: Also can somebody tell me what is the performance hit i am getting by using mismatched rams.

 

[Hussain]

bump

 

[Farmer]

You are not on dual channel DDR, otherwise that wouldn't work, right?

I'd say, difficult. My ram is "mismatched" to a lesser degree than yours (2 Corsair 1 gig sticks of same model number, one is Rev 1, the other is Rev 2), and I find it difficult to bump up FSB without causing some Windows problems or hangs at boot. Then again, I don't have a Venice core.

For OC, in a few lines, just go into your BIOS control and bump up FSB, since your CPU is most likely multiplier locked. If unstable, OC less, or try bumping up CPU voltage and RAM voltage, or loosening RAM timings. Also, probably good to make sure that your Hypertransport bus multiplier doesnt make your HTT over 1.7GHz (around, I don't know, do whatever works good).