GT640 Issues after Mountain Lion install

[Zardozmusic]

Greetings,

I am running:

Intel i7-3770
Gigabyte GA-Z77X-UD5H (v.F14 BIOS)
EVGA GeForce GT640 GPU
16GB Corsair Vengeance DDR3 1600MHz
SanDisk Extreme SSD 240 GB SATA 6.0
Seagate Barracuda HDD 1TB
TP-Link PCI Express Wifi Adapter

The system is running great, purring right along and benched a 1355 on the 32bit geekbench. HOWEVER, the GT640 display is not working quite right. It runs fine for a while but then it flickers a bit and eventually ends up with a snow scramble which is fixed by unplugging and replugging the DVI cables.

Any idea how to fix this issue?

 

[elracador]

Hi Jwar,

I'm having the same issue you had with a MSI GT 640 4 Gb and I was wondering
if you had find any solution for this.

I'm writing you a private message cause I'm not sure you're reading the post anymore.

Thanks in advance

 

[morpheuz]

Did You manage to solve the problem on your build?!?! Its exactly the one im willing to buy.

Could you please tell me your multibeast options?!?!

Its would help me a lot! Thanks!