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EVGA GTX 570 - All Games running smoother in Windowed mode - Please HELP! - Page 2

post #11 of 18
seem alright... you using the PCI-E power connectors from the PSU... or adapters on the molex?
post #12 of 18
Thread Starter 
PCI-E Power connectors from the PSU. So am i right in thinking my PSU gives me a total of 80Amps on the 12 Rails, 20 on each of the 4 rails? That should be enough to power the card properly?
post #13 of 18
It should b more then enough..

But it all depends on weather the psu can actaully supply the power for real..



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post #14 of 18
Quote:
Originally Posted by cApbAt View Post
PCI-E Power connectors from the PSU. So am i right in thinking my PSU gives me a total of 80Amps on the 12 Rails, 20 on each of the 4 rails? That should be enough to power the card properly?
No, that's not how multiple 12V rails works. You can't add up the 12V+ rails like that because they are not 4 separate 20A power supplies.

Rather, all the power available comes from one source (it's probably more like around a 60A source on that PSU). And what the 'rails' actually are is just overcurrent protection (OCP) circuits on particular groups of wires.

So what that rating means is that on any one particular group of wires that constitutes a 'rail' (your 8-pin PCI-Ex cable might be one such group, as an example), if you pull more than 20A through that set of wires, the PSU (in theory) will shut off due to the OCP circuit being tripped.

So all the wires coming off the PSU are part of one of those four sets, and through any of those sets you can pull up to 20A. BUT ... not all at the same time, because like I say, the actual 12V supply is probably around 60A. Most quality PSU makers will also include a 'total' 12V amperage rating for the collection of 12V rails, but yours does not, so I have to guess based on past history ... usually you actually have around 75% of whatever the sum of the 12V 'rails' adds up to.

By the way, that unit of yours is actually made by Huntkey. Not a top-tier maker, but they do make a very good 900W unit. Not entirely sure if the one you have is the 'good' 900W unit they make or not, as typically the model I'm speaking of has 5 12V rails at 18A each, not four at 20A each. Although the 'generic' version of it might be configured slightly differently Do remember if the box it came in said anything about the unit being 80+ Silver efficiency by chance?

Anyway, worst-case w/it being a Huntkey is that it's actually more like a 700W unit that they rated at 900W. Still PLENTY of juice. Best case is it's their 'good' 900W unit in which case you are very much golden w/that PSU.

Now ... that was all just meant as a learning experience for you

It was NOT to tell you that I think the PSU is your problem here. The issue you describe, it's just not logical to believe that a lack of PSU power would manifest itself in this way. Lack-of-power issues will give you shut-downs when you put the system under load, or generally makes your system unstable. It really should NOT cause games to run better in Windowed mode vs. Full Screen mode.

You say the problem persists even if you run fullscreen at a lower resolution, right? How about if you just slam everything down to low (all the IQ settings) along with the res, does it go away then?

Have you tried a different cable to your monitor? If not, try one. Even trying a different monitor might be worthwhile to be honest.

I would also try downloading/installing the latest DirectX package available from Microsoft.

Are you running any kind of mobo monitoring software like Asus Probe or Speedfan or the like? If so, turn it off.

If none of that (along w/running everything at 'stock' in your bios) fixes things, I'd try the card in someone else's machine, just to rule out a faulty card.

I don't understand your story about the ATI card I'm afraid One paragraph you say the problem 'never existed', and then in the next, you say it actually did exist with the ATI card. But then by your description, it sounds like the ATI had the opposite problem from your current card.
Edited by brettjv - 6/11/11 at 9:32am
    
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post #15 of 18
try forcing triple buffering using D3DOverrider.
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post #16 of 18
Thread Starter 
WOW brettjv! Excellent help so far. I'm going to try those suggestions today if i can. I actually used to run an older samsung monitor with this system at lower res (22"), and tried the cable switch on the old ATI card. I even tried HDMI and removed any monitor drivers i could find in my OS. It didn't help, though i will try it with the newer monitor. Oh, and have tried D3DOverider forced help, but doesn't appear to make any difference. I was forcing Triple Buffering in all games from Nvidia Control Panel before anyway.

Sorry to be confusing on the ATI subject. To clarify, when i had the ATI 5850 in this rig, with the same overclock on the cpu and settings in the bios etc, i had the jerky/choppy framerate, but worse in many games. Now this could have been put down to the drivers from ATI, but i'll never know. With this card, when i ran games in windowed mode, native res, the problem near went away, and my games were smooth as butter.

What i'm trying to say is that the problem got better with the introduction of the Nvidia card to this same system when running games at fullscreen in comparison to the ATI card. I now have less choppy framerate, but the problem still exists where my games which do lag seem a hell of a lot smoother still in windowed mode, native res. So are we to presume the problem is external from the graphics card?

The 900W PSU i have came in a tottaly unbranded box, plain white. The unit itself is black only with only the silver grill over a black fan, and the large white sticker on the side. Before this new rig, i ran a gtx280, which i know was power hungry, but maybe it's design meant my PSU could handle it better, along with the other older components. To be truthful, i diddnt used to vsync much before i ditched that old system, but know i do, i notice when the frame skips, or gets choppy, even though fraps will report a steady 60fps, no dips etc.

I know smooth gaming is near impossible, but surely with my hardware i shouldn't have to resort to having to window my games and stare at those annoying borders forever I am really quite happy to buy a new 750-800w PSU to try out, to see if that helps. Would this be wise? i can always send it back if does nothing to help! Thanks again guys.
post #17 of 18
As long as your PSU actually has an 8-pin and a 6-pin connector on it (i.e. you're not using adapters) I would just stick w/that PSU TBH. If you ever decided to go SLI, I'd consider an upgrade, or trying to figure out if that unit you have is (at least internally) the 'good' Huntkey 900W unit I linked to above.

Other than that, I just think you'd just kinda randomly be throwing money at this problem, because seriously ... this is just not the kind of thing that a power problem would be likely to cause. Although I suppose if you can return the PSU if it doesn't fix it, and don't mind that hassle ... or you just want a new PSU anyways ... you might as well I guess

BTW, aside from those you mentioned, what other game(s) are we talking about here? Which are the worst offenders? If any of them are on-line games, have you tried the single-player to see if it has the same problem? TBH, Mafia 2, and the Fallout games ... they aren't the smoothest-running games out there by nature. Esp. not Mafia 2. LFD2 though should be pretty buttery, esp. if you play off-line.

Yes, overall it does seem logical to assume that the problem is external to the gfx card, I will grant you that is likely given it happens w/two different cards. Not 100% though.

Also, please put your rig into your signature by going to UserCP > Add System so I don't have to scroll up to the top of the thread to look

Try all the thing's I've suggested in my posts above and let me know if anything helped. If you have a spare HD laying around, you may as well try throwing Windows on it, drivers, and DirectX (only these things), and then trying some games. You also might try some different values for render ahead frames.
    
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post #18 of 18
Try to use Aero theme. Maybe that's will be fix your problem.
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