Freezer26 Posted July 27, 2005 Posted July 27, 2005 Since neither of us are electrical engineers trained in motherboard design, I like to go with the experts. If you would take the time to read my first post you will see that I did offer several possible solutions. One possible solution is to get a recommended power supply that delivers power to every pin on all four power connections. Those pins are there for a reason. Yes they are there for a reason, it's called PCI-Express. I tend not to believe "experts", I believe with my eyes. They usually don't lie to me. Alot of times the PSU is suggested at fault just because most people see that it's not native 24-pin or whatever the case may be, I am about to put my fourth Antec PSU in my case that I just got back from RMA. Yes I said 4th. 1st one DOA, 2nd one dead after 1 day, 3rd one died after BIOS flash, 4th one, well...we'll see. Now what kind of PSU do I use while all of this is going on, what PSU gives me the highest overclocks yet, what PSU has never given me any problems yet everyone hates them, talks down about them, and yet it keeps on keepin on. My trusty ol' THERMALTAKE 20-PIN PSU. 480watts of pure Craptastic love. My guess is I'll be installing this 4th Antec (once again one of the "reccommended" PSU's) and I'll be uninstalling it shortly thereafter. This is why I believe with my eyes. I do believe that some things happen because of lack of power, but when there is obviously enough power (in a case by case basis) then the "Oh it's your damn PSU" phrases need to be thrown out the window. Something like, oh and by the way, you might wanna look into getting a new PSU, and not just everbody jump on the PSU train. Really gets annoying. No offense at all to you ExRoadie because we all know that you know what you are talking about, it just aggravates me when someone comes in here for help and is told something that most likely isn't going to solve his/her problem. The PSU is not always the answer. -Freez Quote Share this post Link to post Share on other sites More sharing options...
red930 Posted July 27, 2005 Posted July 27, 2005 All of the rails in a PSU are dependent upon the other rails. The load on one rail can affect the output of another rail. Normally this is the 12V rail and 5V rail. As the processor ramps up in load under stress testing it will require more current from the 12V rail. This allows the 5V rail to provide more current to the USB circuit. Just remember that since he isn't providing power to the PCIe slots through the dedicated pins on the 24pin ATX connector, the video card has to be getting power from somewhere other than where it was designed. Yes they are there for a reason, it's called PCI-Express. I tend not to believe "experts", I believe with my eyes. They usually don't lie to me. -Freez Quote Share this post Link to post Share on other sites More sharing options...
Freezer26 Posted July 28, 2005 Posted July 28, 2005 All of the rails in a PSU are dependent upon the other rails. The load on one rail can affect the output of another rail. Normally this is the 12V rail and 5V rail. As the processor ramps up in load under stress testing it will require more current from the 12V rail. This allows the 5V rail to provide more current to the USB circuit. Just remember that since he isn't providing power to the PCIe slots through the dedicated pins on the 24pin ATX connector, the video card has to be getting power from somewhere other than where it was designed. I agree!! Totally!! But he stated that when he is at "Full-Load" which would mean full power consumption he is getting "more" power to the USB. So your statement doesn't seem to take place in this situation, correct? I think I said that wrong, what I mean is that he is getting enough 'juice' to everything, right, so why when he puts it in 'full-load' does he get more juice to that area? I just dont think a PSU will solve that problem, it sounds like something is defective on the board. But I am not an expert, so.... -Freez Quote Share this post Link to post Share on other sites More sharing options...
3 Posted July 28, 2005 Posted July 28, 2005 Well, I am sure it is the PSU. DFI requires you have a 24-pin PSU or else they will not give you tech support. Remember, the 24/20-pin connector is what powers the USB ports after all. Quote Share this post Link to post Share on other sites More sharing options...
red930 Posted July 28, 2005 Posted July 28, 2005 Once again for clarity... There are certain PSU designs that are less than acceptable. Cross-loading of rails is a common problem amongst these "bad" of power supplies. In a given situation the 5V rail is output limited based upon the 12V rail output or the opposite may be true. In his instance it may be that the 5V rail is limited until the 12V rail is delivering more current to the processor. Once the 12V rail starts delivering more current the 5V rail is able to deliver more current which is where the USB ports get their power. When he places the processor under load it will require more current from the PSU. This current is delivered by the 12V rail. Due to cross-loading the 5V rail is now delivering more current. As stated above, this is just a possible explanation of his test results. I agree!! Totally!! But he stated that when he is at "Full-Load" which would mean full power consumption he is getting "more" power to the USB. So your statement doesn't seem to take place in this situation, correct? I think I said that wrong, what I mean is that he is getting enough 'juice' to everything, right, so why when he puts it in 'full-load' does he get more juice to that area? I just dont think a PSU will solve that problem, it sounds like something is defective on the board. But I am not an expert, so.... -Freez Quote Share this post Link to post Share on other sites More sharing options...
Freezer26 Posted July 28, 2005 Posted July 28, 2005 Once again for clarity... There are certain PSU designs that are less than acceptable. Cross-loading of rails is a common problem amongst these "bad" of power supplies. In a given situation the 5V rail is output limited based upon the 12V rail output or the opposite may be true. In his instance it may be that the 5V rail is limited until the 12V rail is delivering more current to the processor. Once the 12V rail starts delivering more current the 5V rail is able to deliver more current which is where the USB ports get their power. When he places the processor under load it will require more current from the PSU. This current is delivered by the 12V rail. Due to cross-loading the 5V rail is now delivering more current. As stated above, this is just a possible explanation of his test results. Ok. What about changing the USB jumper on the board..JP5 and JP6?? I just did it as I am having problems in Skype with my USB headset and Battlefield 2 sometimes crackles. Not so sure my problem is fixed but might give that a try. -Freez Quote Share this post Link to post Share on other sites More sharing options...
bcprowor Posted July 28, 2005 Posted July 28, 2005 are your USB powers on when your computer is turned off? my old system when shut down, the USB power was still on so i could charge my ipod/mobile phone however with my new setup..once the power's off..the USB power is also off..any ideas? Quote Share this post Link to post Share on other sites More sharing options...
Candelaria Posted July 28, 2005 Posted July 28, 2005 Ok. What about changing the USB jumper on the board..JP5 and JP6?? I just did it as I am having problems in Skype with my USB headset and Battlefield 2 sometimes crackles. Not so sure my problem is fixed but might give that a try. -Freez use the Marvel Lan not NVidia for Skype. I had lots of sound issues with Skype and the NVidia LAN port that dissappeared completely when switching to Marvel. the marvel is working excellent with the new drivers from Marvel's site. Quote Share this post Link to post Share on other sites More sharing options...
red930 Posted July 28, 2005 Posted July 28, 2005 I guess I've been lucky since I have never had a problem using the nVidia LAN ports on any of the nF4 rigs I've built. The only nVidia LAN port problem I've had was on the nF3 and that was resolved with the 10/15/04 BIOS. use the Marvel Lan not NVidia for Skype. I had lots of sound issues with Skype and the NVidia LAN port that dissappeared completely when switching to Marvel. the marvel is working excellent with the new drivers from Marvel's site. Quote Share this post Link to post Share on other sites More sharing options...
Freezer26 Posted July 28, 2005 Posted July 28, 2005 ExRoadie, just know that I was never trying to ARGUE with you over the PSU deal, I was just wanting you to see my take on all the other posts that have the same reply, and even though it is neccesary it does get frustrating. Especially when it doesn't even apply to the current situation. That is all that I was getting at. To the OP, never meant to steal your thread and I appologize if I did. -Freez Quote Share this post Link to post Share on other sites More sharing options...
red930 Posted July 28, 2005 Posted July 28, 2005 It's all good. ExRoadie, just know that I was never trying to ARGUE with you over the PSU deal, I was just wanting you to see my take on all the other posts that have the same reply, and even though it is neccesary it does get frustrating. Especially when it doesn't even apply to the current situation. That is all that I was getting at. To the OP, never meant to steal your thread and I appologize if I did. -Freez Quote Share this post Link to post Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.