I had a low end graphics card (a Geforce 8400 GS to be exact, it only lasted a year) that had a fan that died on me about a week ago. So, a friend recommended me the Geforce GTX 550ti and a new PSU: the Raidmax Hybarid 630W (since my current PSU only outputs a max of 250W, a Bestec atx-250-12z rev d7r).
My motherboard is an nvidia pegatron corporation 2a99 and I am sure that the PCI-E x16 should work with the 550ti. So my only concern is with PSU... I don't know if I should get the Raidmax Hybrid or another PSU.
What I am looking for is a durable power supply that will work smoothly within 500W to 700W, I don't want it to die in a month or arrive DOA. So price isn't first priority...
Also I am planning to get these before this December (2012) ends, so a timely reply would be most appreciated. Thanks in advance.
For the raidmax, you have roughly 51Amps available on the 12V rails so It will support a GTX 550TI just fine. Hell, Id get a gtx 660 so you can game in 1920x1080 at very close to max settings (for most games). I used the GTX 550TI for about 8 months and very demanding games didnt not run well at all at 1920x1080. the card is only rated for a maximum of 1680x1050
Remember that the Raidmax is split so that 51Amps cant be "entirely" used.
Total power draw from the GTX 550TI never went above 130W in my tests. Maximum available is 150Ws. 75Ws from the PCI-e slot and 75w from the 1x6 Pin PCI-e connector. The same for the 660 never going above roughly 140W
As for reliability of this company, I have no idea and would allow others here to comment, and browse the web for reviews and feedback.
As for the Corsair. You have 38 Amps on the 12V rail and again would run a GTX 550TI/ 660 just fine
Ive heard good things about corsair PSUs, But sometimes items just come in DOA, so don't know what to tell you
As for figuring out how many AMPs are available, you take the total power available on the +12V rail(s) and divide by how many volts (In the case of all PSUs, 12) And of course Watts matter to. Just make sure to check both values
For a system using a single GeForce GTX 550 Ti graphics card NVIDIA specifies a minimum of a 400 Watt or greater power supply that has a combined +12 Volt continuous current rating of 24 Amps or greater and that has at least one 6-pin PCI Express supplementary power connector.
Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Total Combined Continuous Power/Current Available on the +12V Rail(s) rated @ 45°C-50°C ambient temperature, is the most important factor.
Overclocking of the GPU will require an additional 0.5 Amp increase to the combined +12 Volt continuous current ratings, recommended above, to meet the increase in power required for the overclock. The additional amount required will depend on the magnitude of the overclock you are trying to achieve.
The Raidmax Hybrid Series 630W (RX-630SS), with its combined +12 Volt continuous current rating of 38 Amps and with one 6-pin and one (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with a single GeForce GTX 550 Ti. Raidmax is a brand that I wouldn't trust or recommend. It also has a shorter than industry standard warranty period.
The Corsair Builder Series CX500 V2 (CP-9020047-WW), with its combined +12 Volt continuous current rating of 38 Amps and with two (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with a single GeForce GTX 550 Ti.
Wow, ok, thank you both. I would consider getting the GTX 660, but it costs just a little more than I can afford right now (my budget is $300 by the way, sorry if I didn't mention it earlier) and it requires a PCI 3.0 x16 slot (and my current mobo only has a PCI 2.0 x16).
But, while I was waiting I decided to keep looking around on Newegg and have decided on a slightly different build. I wanted to get a better CPU but in order to do that I would need to also change my motherboard. So a friend recommend me the BIOSTAR TA990FXE:
However, those two things I will get in the near-future, probably in several months. Since getting a new mobo, CPU, GPU, and PSU would cost me quite a lot, all at once. So, at the moment I want to focus on just getting the GPU and the power supply. But that motherboard (the TA990 FXE) has two PCI x16 slots, so I wanted to take advantage of that and the GTX 550 ti's SLI support to get two of them running side by side. Again, I don't have enough money to get it all at once, so it will only be one 550ti and a PSU. But since I will be using two 550 TIs and a 125W CPU (the FX_8350), then I will need a PSU that will be able to handle all that, for the long-run.
I read somewhere that the Geforce GTX 550ti uses about 140W when idle and 250W when loaded (found it: http://www.bit-tech.net/hardware/graphics/2011/03/15/nv... ), So that would be 625W at max (taking into account the CPU). Is that site creditable, or does the 550ti really never go over 140W like you said? Should I stick to the RAIDMAX HYBRID 2 RX-630SS or go with a stronger PSU just in case?
So far, I have looked into these two PSUs that should cover all the bases:
For a system using two GeForce GTX 550 Ti graphics cards in 2-way SLI mode NVIDIA specifies a minimum of a 500 Watt or greater power supply that has a combined +12 Volt continuous current rating of 38 Amps or greater and that has at least two 6-pin PCI Express supplementary power connectors.
You seem to have an affinity for the crap power supply brands.
The Cougar A-Series is rated at 25°C. That's not even a realistic temperature inside of a computer case. That power supply can't even deliver the wattage on its label under real world case temperatures. That A-Series also has a voltage regulation problem on its +3.3V and +5v rails when you approach the power supply's rated wattage. Cougar uses HEC/COMPUCASE as its OEM, it's not an OEM that I would trust.
Select a PSU from the reputable brands like Antec, Corsair, Enermax, Seasonic, XFX since they use reputable OEMs or are an OEM them-self.
The Seasonic S12II-620 Bronze (SS-620GB), with its combined +12 Volt continuous current rating of 48 Amps and with one 6-pin and one (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with two GeForce GTX 550 Ti graphics cards in 2-way SLI mode.
If I understand correctly, it has the 12V of continuous current rating of 53 amps, 4 x 6+2 pin PCI-express connectors, comes SLI ready,and is modular.It also costs the same as the seasonic S12II 62 when including the promo code. So it should be sufficient, right? I'm not forgetting or overlooking anything?
But I plan to get another card (SLI support) in the future...
Well, I am going to stick to the XFX 650W then, it should be enough. Thank you all for the help, especially you Ko888, I would have been completely lost otherwise. xD
This is actually the third time that I have ever ordered hardware for my stock computer. The first time was to to up upgrade the CPU (to the Athlon II x4) and the second was to get a really cheap low end card (Although it was much better than just relying on the integrated graphics). So this is the first time I have ever tried replacing the power supply and I had no idea where to start. So again, thanks.