I recently built a new computer and included:
a Pentium D 820
1 gig of PC2-3200(iknow i skimped out)
300W power supply (came with case)
regular cd/dvd burners, nothing special
and i splurged on a Geforce 7800 GTX512
I just finished installing lost coast and performed the video stress test all maxed at 1920x1440. I got a vary good framerate at 66fps. Then i wanted to see how far it could really go, so i put everything at vary lowest settings at 640x480. At the end of the stress test, I got about 68FPS. Since there was little performance diffrence in the two I figured something is bottlenecking at 68 or so fps but im not sure if it is the CPU, MEM, PSU, a combination thereof, or even all of the above. Any tips would be appreciated!
I have Vsync turned off and the 300 W PSU seems to do pretty well but it might be starving my card. BTW a 4800 would take a new mobo and I dont want to spend that much on my comp after spending that much on the video card.
CPU could be the bottle neck, since most games are not Multi-threaded apps.. some may perform worse or better. Try changing the affinity of the process to one cpu if not already or to both. Theres an article as well as some benchmark results of this on TH.. http://www.tomshardware.com/2004/05/28/getting_more_ban...
While it can be debated on the quality of the PS if you do the math, most system DO NOT need more than 300 watts of power..
If you do any research, you will see that the total for his system is prb around 250 watts..
This hype about 400-500 watts PS is just vendor overkill
Running a quality 300 watt PS with basically same kind of setup except for an Athlon and my mesured (yes I mesured) power consumption is 235 watts under load..
My 2 cents..
BTW in the bottleneck is prb the CPU as mentionned
First of all he is using a P4 820, so it uses about 305 Watts AT IDLE. Secondly, the processor is not the bottleneck unless he has a less than sufficient cooling solution for it. May sound silly, but disable Hyperthreading and see if you get better performance. HT usually slows down games and is optomized primarily for multitasking.
If that doesn't help cpu has nothing to do with it...its either your mobo drivers or possibly video drivers. You definately need a bigger PSU for this config though...
check for a patch or update for the game and card, also some driver setting force image quality[vsync] set it to performance or by app what ever you have in driver. 3dmark05[free demo] score is a better test of cards performance,and SiSoftware Sandra 2005[free trial] will give a full system rating.
what is the stress test your running ? Some games limit frame rates[doom3 I think]. If you had a bottleneck in hardware low settings would still be faster. It can reach highest setting so it's getting the data though put it needs. Your system is above any min for any game[psu is under power imo]. Fraps[free] will give in game fps,try that on a few games with diffrent settings. Change refresh rate, see if that changes fps.