9800gx2 help

I think my 9800gx2 is running too hot, the idle temps are 50-60 on one core and 60-70 on the other, is this normal, when playing crysis it goes up to about 70 degrees. I checked on gpu-z that my video card fanspeed stays at 45% how do i adjust that, i can't use ntune cuz i don't have nforce mobo.

I own two of them,and the temps your getting is normal for the 9800GX2. You could always by a PCI cooling booster from CoolIt Systems. $14-$18 It lowered my both of my cards temps by 6c-8c

Then why am showing these wierd things when playing crysis, all high 2-4x AA 1680x1050 i sometimes see these multi colored triangles twice the size of the buildings for no reason, they don't disappear, i'm not sure if their artifacts. My PC also lags badly after Crysis and it also makes wierd noises. How do i turn up the gpu fan speed it only runs at 45% ?
specs
E8400
P5K
9800gx2
a-data ddr2-800 2x2gb
Antec 900, windows XP

I have no problem with playing CoD4 but i don't know why my PC lags after gaming

Download RivaTuner it should work with any setup. On the front page of the app click the triangle next to "ForceWare detected customise...". Then click on the first icon, system settings. Click on the tab which says "Fan" and change the top drop down box from auto control to direct control. From there you can set the fan speed on all three types of rendering. If you want to keep the settings then check the "Apply at startup..." box and apply your settings. If you want to check for artifacting and your GPU temps then download "ATITOOL", it doesn't matter if you use it for you Nvidia card as i use it for mine. It allows you to overclock and if you click the button "Scan for artifacts" you can see how stable the 9800 GX2 really is....

My card will artifact, but only if I overclock too much, Crysis seems to be particularly sensitive to overclocks.

well, try pushing it to 750 core and up....

Under powered?

So wait, 'in case the worst happens' means your computer might shut off? Well, when that happens to me, I reboot.

0.o

Yes I don't see why not

no lol overclocking would be if your pushing the circuit past what it was desinged to achieve. The fan is completely irrelevant to the warranty.

No clue to be honest. Do you have the lastest drivers? I'd suggest trying the latest drive and after try returning it for a new 1. The longer you wait, the harder it will be to return it they might ask you more questions

The shop says they have 3 years warranty and I don't have time to get it changed yet. I noticed that when playing GRAW 2 and CoD4 theres no problems but on crysis i might see one or two artifacts occasionally. I guess it only happens when the card is really stressed. I don't think i have voided my warranty sicne i only increased the fan speed although when i get the card replaced i might overclock it.
I'm not sure if the card is affecting my framerate in crysis
specs
E8400
2x2gb ddr2 800
9800gx2
settings
1680x1050, all high, 2x/4x anti aliasing
frame rate min19 max 45 average 30-40. Is that normal?