It's probably a long shot but is your power supply up to the task running that system? I've had similar issues and it turned out to be a weak power supply dropping out under load.

What is the +5V rail on your PSU rated at?

Skanque wrote:

The board came with bad caps (Sacon 1500uf 10v), I have replaced them with Sanyo (2200uf 10v).
According to this forum, the increased capacity should not be a problem ?

Higher voltage rating on caps is okay.
Higher capacitance may or may not be okay(you should try to match or stay as close as possible), in some applications changing the capacitance could really mess up things, but i think that on a CPU VRM changing to 1500uf to 2200uf shouldn't cause any harm, but i'm by no mean a specialist neither an electrical engineer.

Hi guys

Thanks for the replys! the PSU is a modern one FSB Hyper 600.

I solved the problem, by going through multiple drivers and graphics drivers, finally I found some that will run the system stable!

I was sure that the problem had to be hardware related, since it was so jittery and crashing so hard, but apparently it was a software issue (:

Results so fare:

3dmark01 on:
Soyo = 9856marks
Soltek = 10798 marks

DOOM 3 High settings 800x600:
Soyo 30.8 fps
Soltek = 35.2 fps

Quake 3 Arena timedemo 1:
Soyo 125.4 fps
Soltek = 139.3 fps

I have not tested the Asus tusl2-c yet

Excellent news I'm glad you got it figured out

Glad to see you have fixed the issues with the graphics card. I have been using an overclocked 6800GT in my RDD for a very long time, and after a long and thorough test with different Forceware versions, I found out that the best and fastest driver version on XP, at least for a 6800GT, is version 81.98. I used a modded version called XTreme G that allowed me to squeeze some more performance out of the card. Now I'm using an ATI Radon X1950 Pro as a stopgap solution until my HIS Radeon HD4670 arrives.

About the USB 2.0 card issue, well, it's the card. VIA based USB 2.0 PCI cards are known for causing instability, data corruption, errors during file transfers. The best solution is to get a NEC based USB 2.0 card, those are very stable and reliable.

@ chrismeyer6 Thank you 😁

@ looking4awayout Very nice information ! thank you. I will test out that version of the software and see what my card can do.
According to other people, the Leadtek A400 Geforce 6800 can easily be unlucked to preform as a Ultra, do you know if this is true ?

Radeon X1950 and Radeon HD4670 uses bridge chips correct?

Regarding the USB, I can totally see what you are talking about, the Soyo board acts up when its plugged in and so did my Asus Tusl2-c I am testing now.. So I am gonna bin it and get a NEC card instead !

Glad that I joined you guys forum, its a very nice community, looking forward to spending more time here (:

Well, I had an Inno3D 6800GT, which can be easily overclocked to Ultra speeds, or even beyond that (mine was running stable at 416/1108!), but I don't know if the regular 6800 can be overclocked that much, it's surely worth a try.

Yeah, the X1950 Pro and the HD4670 use a bridge chip, since they are native PCIe cards bridged to work on the AGP bus, but so far I had no issue with the X1950 Pro, runs like a champ and performs way faster -at stock clocks- than my overclocked 6800GT. Hopefully the future HD4670 should go even further, as I used to own an HD3850 in the past, but gave me all sorts of issues: freezes, stuttering during explosions or other lights effects and instability, until the card itself died for no reason (suppose the card was already on its way out, at this point, since the owner abused it a lot).

About the USB 2.0 card, yeah, get a NEC based one. To squeeze more performance out of your system, make sure you disable the USB 1.1 portion of the card. You can do that in the Device Manager and disable everything related to NEC USB Open Host Controller. That will disable the USB 1.1 controller of the PCI card (no need for it since you already have USB 1.1 ports onboard) and will force the card to run at USB 2.0 speed only, as well as halving the boot times and memory consumption.