How can i tell if my PSU is affecting my graphics

hi there,i have a gaming pc with a cheap greatwall psu.550watt,i play alot of call of duty black ops,i get alot of stutter and frame freeze,how can i tell if it is my psu affecting my graphics??..i want to upgrade to a gtx460 card but maybe my psu is the problem


Gigabyte GA-EP45-UD3L, Intel P45/LGA775/ATX
4GB KIT(2x XMS2 2GB) Corsair 'XMS2' [TWIN2X4096-6400C5], DDR2/PC6400/800MHz x 1
550W Greatwall - 12cm Fan x 1,
500GB Seagate ‘Barracuda’ [ST3500418AS], 7200.12/SATA/16MB CACHE x 1,
Intel® Core™2 Duo E7600, 3.06GHz/FSB1066MHz/3MB Cache/LGA775 x 1,
XFX HD 4770 512MB 128Bit, [11X-HD4770-512], PCIe x 1,
appollo NZXT case
6 answers Last reply
More about affecting graphics
  1. One way , other than the visual issues you describe, is to look at temps (use speccy or hwmonitor or gpu-z) and see how hot the GPU is running. A failing/defective PSU can contribute to the GPU working harder than it should and thus generating lots of heat.
  2. Failing psu will cause system reboots not stuttering.Cod black ops has documented stuttering issue.Nothing new there.
  3. Run the GPU test in OCCT .... watch voltages throughout test ... at end of 60 minute test, it will graph the results ..... atx specification is max 5%, get concerned at 3 % .... I prefer PSU's with 1% max variation.

    http://www.ocbase.com/perestroika_en/index.php?Download
  4. JackNaylorPE said:
    Run the GPU test in OCCT .... watch voltages throughout test ... at end of 60 minute test, it will graph the results ..... atx specification is max 5%, get concerned at 3 % .... I prefer PSU's with 1% max variation.

    http://www.ocbase.com/perestroika_en/index.php?Download

    +1, this is a GREAT suggestion.
  5. JackNaylorPE said:
    Run the GPU test in OCCT .... watch voltages throughout test ... at end of 60 minute test, it will graph the results ..... atx specification is max 5%, get concerned at 3 % .... I prefer PSU's with 1% max variation.

    http://www.ocbase.com/perestroika_en/index.php?Download

    thamks,i am running the PSU test now with that software,i will post a reply soon
  6. i ran the test for 25 mins but stopped it coz i thought the temps,cpu and others were getting high,but i dont really understand the graph readings properly
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