GPU green dots while gaming and instability?

Ive been getting some instability in my GPU lately green dots while running Borderlands on full widescreen totally fine when not full screen and crashes after about 3 minutes when running Mass Effect on high res. all other games seem to be fine on full screen. Im Thinking the rig is underpowered? Im fairly new to PC building so please go easy on me.
y PC specs are as follows
i7 920 oc @ 3.6
noctua uh 12p heatsink
asus p6tv2
Patriot 6GB viper 1600
2 WD 500GB HD 7200
1 WD 1TB HD 7200
2 WD external 1TB HD
asus EAH 4890 GPU
corsair TX750W PSU
5 stock fans
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More about green dots gaming instability
  1. quinnmarc said:
    Ive been getting some instability in my GPU lately green dots while running Borderlands on full widescreen totally fine when not full screen and crashes after about 3 minutes when running Mass Effect on high res. all other games seem to be fine on full screen. Im Thinking the rig is underpowered? Im fairly new to PC building so please go easy on me.
    y PC specs are as follows
    i7 920 oc @ 3.6
    noctua uh 12p heatsink
    asus p6tv2
    Patriot 6GB viper 1600
    2 WD 500GB HD 7200
    1 WD 1TB HD 7200
    2 WD external 1TB HD
    asus EAH 4890 GPU
    corsair TX750W PSU
    5 stock fans


    Not underpowered, that 750tx should be good for 2 4890s. You have the latest drivers? Also you check GPU temps?
  2. ok thanks ya all the lastest drivers have been installed and GPU temps seems to be well within norms idle at 40c and max ive seen it hit is 63c? its really strange?
  3. Run Prime95 on your processor, and Furmark on the GPUs. This will push them to the max, and point to whichever is causing the instability (if it is either of them).
  4. Cheers will do thank you
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