Corsair VX450W and GTX570
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If you are referring to the guru3d review then read it carefully :
I've summed up your total power consumption as this :
X4 955BE - 125W
GTX 570 : 210W
500GB HDD and ODD - 15W
Mobo - 25W
4 Case Fans - 20W
Total = 395W and VX450W can deliver 396W - so you're on the verge of stress testing your VX450W.
Get CM LED Fans.
Those fan has 1200RPM and 90CFM but CM LED fans has 200RPM and 90CFM - so it's better to get the latter one.
Of course needed..as 570 power hungry card...his psu can barely manage his rig.
And he is gonna add more fans ,u see..
So,it is a cheaper way getting a 900w supply in less cost than a single 500w setup.
gtx570 is power hungry.But not hot,i think.
if he is gonna buy a new 500w psu, isn't it better to get another 450w and make a dual psu setup?
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OP
Terabyte
In the zone
@topgear : But which game will stress my Processor? AFAIK modern games are more GPU intensive rather than stressing out processor.
Also at +12V rail my PSU supplies 396W as topgear said. But won't the other rails be used at all? I do know that modern PCs use +12V majorly but what about other rails?
@mohiuddin : Setting up another PSU in my cabinet will be pain I guess and my dad won't allow me to spend more.
My budget for graphic card is 20k, somehow I have managed to stretch it to 22k so getting another PSU is out of question for me
Also at +12V rail my PSU supplies 396W as topgear said. But won't the other rails be used at all? I do know that modern PCs use +12V majorly but what about other rails?
@mohiuddin : Setting up another PSU in my cabinet will be pain I guess and my dad won't allow me to spend more.
My budget for graphic card is 20k, somehow I have managed to stretch it to 22k so getting another PSU is out of question for me
asingh
Aspiring Novelist
Why would he need 900W. Please no ways. And an additional fan will cost on 5-7W extra on load. As said, his current 450W Corsair unit is capable to run the system, even if he puts no 2-3 more fans. Next time he changes a major component he can consult us.
@mohiuddin : Setting up another PSU in my cabinet will be pain I guess and my dad won't allow me to spend more.
My budget for graphic card is 20k, somehow I have managed to stretch it to 22k so getting another PSU is out of question for me
if it is pain to u, no need.
BTW,did u bought 570gtx.if not ,don't buy it. buy a 6950,unlock it to 6970.it will take less power.
barely can.and stressing more than 80% is risky and will loose efficiency.
asingh
Aspiring Novelist
^^
Could you please explain me two things. I want them clear and precise. I am tired of this thread.
1. How can it barely run his system on a VX450W.
2. Why will he loose efficiency when he load more than 80%.
Please.
Also here.
Read post #124 onwards. Something which I had posted elsewhere.
Could you please explain me two things. I want them clear and precise. I am tired of this thread.
1. How can it barely run his system on a VX450W.
2. Why will he loose efficiency when he load more than 80%.
Please.
Also here.
Read post #124 onwards. Something which I had posted elsewhere.
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I was talking about the +12V rail and it's 33A for VX450W!
Of course needed..as 570 power hungry card...his psu can barely manage his rig.
And he is gonna add more fans ,u see..
So,it is a cheaper way getting a 900w supply in less cost than a single 500w setup.
gtx570 is power hungry.But not hot,i think.
if he is gonna buy a new 500w psu, isn't it better to get another 450w and make a dual psu setup?
even a GTX570 Sli setup won't need 900W!
GTX570s load temp was 77C in winter season so in hot summer season it will get hot for sure - so you need to provide enough ventilation and cooling.
You are right about this - games and apps won't stress your cpu and gpu at 100% all the time but when your start your rig your components will consume maximum power possible and thats' what called startup surge I guess.
The other rails like +3.3V, +5V, -12V, +5VSB etc. is used for mem modules, pci cards, etc. But most of the components rated at 12V will consume mainly the +12V rail.
VX450W was able to deliver more than 396W on it's +12V rail ( acc to the reviews ) - so you might able to run your rig safely.
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1.the link u gave, there 450w was recommended for a 5770.and as topgear said, 33a rating in +12v rail,~396w max. His poccessor and gpu can eat 300+w while gaming.other components eating from +12v rail will also add some stress...so u calculate.
2.most of the psu loose efficiency over 80% stress..even branded psu can hardly maintain 70%efficiancy at >90% load.
3. If u r tired of this thread, just don't read it...i don't care.
1.i know that 570sli don't need 900w. But, if he is going to buy a new 500w psu , my idea is not that bad.
2.it is not 77c, in game it is a lot cooler.
Even see this,
NVIDIA GeForce GTX 570 Review - Page 20
it is 10c cool than 5870 , 5c cool than 5850 ,cooler than 6850,6870.
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asingh
Aspiring Novelist
^^
Well, you missed the crux of the link. Wished you had understood. It was not to rub in the fact that a 450W is capable for a HD5770. It was about efficiency, and the myth that at full load (or not running at 50-60%) will give give idealistic efficiency bands. See the purple grid which I had created, it shows how much the efficiency varies as more load is applied, and how much over all efficiency average changes again as load is sequentially mounted on the unit.
If you still want to live in the myth that at greater loads efficiency fails please see these links.
Silent PC Review.
Hardware Secrets.
Johnny Guru.
And instead of trolling in here, and recommending 900W PSUs and dual PSU set ups, it would make more sense to post sense. The OP all ready has a VX450 so there is no way that he can change his PSU. We all mentioned that he is currently safe to run the system -- but ask us for any future upgrades. NOT Fans like you mentioned. You do know how much extra load a 120mm fan draws right..? No way does it qualify for higher rated PSUs.
Can you show me, where the OP has suggested that he will buy a new 500W PSU, or asked recommendations on the same lines..?
Well, you missed the crux of the link. Wished you had understood. It was not to rub in the fact that a 450W is capable for a HD5770. It was about efficiency, and the myth that at full load (or not running at 50-60%) will give give idealistic efficiency bands. See the purple grid which I had created, it shows how much the efficiency varies as more load is applied, and how much over all efficiency average changes again as load is sequentially mounted on the unit.
If you still want to live in the myth that at greater loads efficiency fails please see these links.
Silent PC Review.
Hardware Secrets.
Johnny Guru.
And instead of trolling in here, and recommending 900W PSUs and dual PSU set ups, it would make more sense to post sense. The OP all ready has a VX450 so there is no way that he can change his PSU. We all mentioned that he is currently safe to run the system -- but ask us for any future upgrades. NOT Fans like you mentioned. You do know how much extra load a 120mm fan draws right..? No way does it qualify for higher rated PSUs.
Can you show me, where the OP has suggested that he will buy a new 500W PSU, or asked recommendations on the same lines..?
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yea, bro i was in myth...i saw in some article that at 100% load efficiency decrease drastically.thanks for making it clear.but,i why jonny guru said below 350w is sweet spot for vx450.?be, more polite.as u have some responsibility here as u r a mod..u shouldn't do express ur emotions in such a way that a normal member can...
Where i told OP is gonna buy 500w psu? I told if...
As to me, 450w is not recommended for 570,i told about that setup...
And where is the problem of using dual psu?i don't see any.can u please enlighten me??
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asingh
Aspiring Novelist
^^
1. Cause both units have to start exactly at the same time.
2. To enable (1) you need either:
A) A special cable which connects both units and short circuit starts (jump starts) the second PSU. This is difficult to get and expensive.
B) A jerry rig method to initiate (2a). For which you have to read up a lot on the net, and is risky, cause if done incorrectly, you have a burnt PSU(s) or a dead system/part.
3.Difficult to fit in two bulky PSUs inside the cabinet.
4.User has to choose which type of component needs to be connected to the primary/secondary PSU. It is not as simple as just hooking up which ever part one deems fit to the PSU connectors.
5.More heat inside the cabinet.
Now, if you can negate all of the above, and convince the OP for dual PSU you have a case. Best.
1. Cause both units have to start exactly at the same time.
2. To enable (1) you need either:
A) A special cable which connects both units and short circuit starts (jump starts) the second PSU. This is difficult to get and expensive.
B) A jerry rig method to initiate (2a). For which you have to read up a lot on the net, and is risky, cause if done incorrectly, you have a burnt PSU(s) or a dead system/part.
3.Difficult to fit in two bulky PSUs inside the cabinet.
4.User has to choose which type of component needs to be connected to the primary/secondary PSU. It is not as simple as just hooking up which ever part one deems fit to the PSU connectors.
5.More heat inside the cabinet.
Now, if you can negate all of the above, and convince the OP for dual PSU you have a case. Best.
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S_V
In the zone
@Terabyte
You need to update your SMPS if you want to add any more components even like another HDD even FANS too in future.. That vid card alone uses more than 300Watts at gaming or HD movie viewing and what about processor,HDD,Fans, Mobo components etc.. You are really at peak and although you can run your system at present. I seriously doubt it will hold long.
Your SMPS is a budget product but not for enthusiastic products such as GTX 570. You are overheating the components in SMPS while full load and that heat comes to system if not ventilated out properly and it's not good for your SMPS life too.
if you have APC ups or similar ones to monitor the power you draw from AC... Run MSI Kombuster and winrar benchmark tool together and check the watts drawn. You will get clear picture.. I am sure it draws around 420Watts...(All together). Which is clearly not safe to your rig...
You need to update your SMPS if you want to add any more components even like another HDD even FANS too in future.. That vid card alone uses more than 300Watts at gaming or HD movie viewing and what about processor,HDD,Fans, Mobo components etc.. You are really at peak and although you can run your system at present. I seriously doubt it will hold long.
Your SMPS is a budget product but not for enthusiastic products such as GTX 570. You are overheating the components in SMPS while full load and that heat comes to system if not ventilated out properly and it's not good for your SMPS life too.
if you have APC ups or similar ones to monitor the power you draw from AC... Run MSI Kombuster and winrar benchmark tool together and check the watts drawn. You will get clear picture.. I am sure it draws around 420Watts...(All together). Which is clearly not safe to your rig...
S_V
In the zone
Actually it's 250watts when running futuremark ,I am sure running MSI kombuster will also consume more than 250 watts.. Though 75% games never draw that much power. It all depends on Drivers too.. You processor is also AMD BE which draws good amount of Power at load....
Report: Nvidia GeForce GTX 570 (page 3: Energy consumption, noise) - BeHardware
Well I am not trying to convince you or win my argument. It's just I am telling you reached safe zone limit. With my experience It's not safe to run SMPS at peek.. Out of all 11 years experience of Hardware and software I am telling you...
That's it...
Report: Nvidia GeForce GTX 570 (page 3: Energy consumption, noise) - BeHardware
Well I am not trying to convince you or win my argument. It's just I am telling you reached safe zone limit. With my experience It's not safe to run SMPS at peek.. Out of all 11 years experience of Hardware and software I am telling you...
That's it...
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