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ATi X800 XT not getting enough power?


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#1
XoPulseoX

XoPulseoX

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I recently picked up a ATI X800 XT AIW, and noticed in games like HL2 and Battlefield 2, my FPS were strangely low. I have an AMD Athlon XP, with 1gb of ram, and my frames never really break 35 in BF2 with any kind of action going on on-screen. I have everything set on high except lighting, with 2xAA at 1024X768. I have read other posts by people who have my same sytem spec (some with less) and have a solid 50-60 FPS. In trying to figure out my problem, someone asked me what my PSU specs were, andI told him it was a 425 watt psu, +12v 12a MAX. He said that that was "REALLY LOW" for my card, and that it could not be getting enough power, causeing a performance drop-off. Before I go out and grab another PSU, just wanted to get some second opinions.

I have tried alot of graphics tweaks alread (raising the Aperature to 256, messing with all the Catalyst settings). I also have the most current ATi Drivers (5.9). I dont know much about PSU's, and simply figured that as long has my power supply was over 350, I would be ok. Could only having a 12a rail be hurting my performance? Thanks.
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#2
austin_o

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Hi and welcome to Geeks to Go. Since the amps on the +12v rail is less than 18, I would say your power supply is indeed "lean" for an AMD system, particularly if you make heavy demands on video for gaming. The best resource I have found for information on perhaps the most over looked cause of problems (Power Supplies!!) go here
http://www.hardforum...isplay.php?f=93
Start by reviewing the sticky posts at the top.

This helped me figure out that my random reboot problem was caused by a 480W psu that was actually only capable of 290W, and not enough amps for my AMD 64 system (it was the PSU it came with!!). I ended up replacing it with a quality PSU, 550W (from Newegg) and no more reboot troubles.
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