quan289

I would recommend getting the XFX XTR 550w instead: https://es.pcpartpicker.com/product/Rkh9TW/xfx-power-supply-p1550bbefx It's based on the Seasonic G platform but offer full modularity. It's a superior design / quality than the two M12II-B units.

You're right, but since SF is a small company they are not able to keep up production in which they may outsourced it to other OEMs. As stated my Jonnyguru, the G2 had been sub-contracted to HEC. http://www.jonnyguru.com/forums/showpost.php?p=134797&postcount=81

The 650w model will be more than plenty

So you pick a supplementary PCIe powered 61 core processor and a dual GPU card from an older generation to show how modern components isn't as power efficient as some people is claiming? Well, I guess the point that a 500w PSU can power a 1080 Ti in SLI is stretching it... The TDP of the 1080 Ti is 250w while the recommended PSU is 600w with two PEG connectors (one 75w 6-pin and one 150w PEG). The 600w figure is that way to factor in various of system's configuration and power supply quality. https://www.hardocp.com/article/2017/03/09/nvidia_geforce_gtx_1080_ti_video_card_review/12 That review shows that with a system with an i7-6700k @ 4.7GHz has a power draw of 394wAC at the wall during gaming loads. Factoring in power supply inefficiency, the power draw is ~340wDC. A quality 450w PSU can power that system, while a 550w would allow him to comfortably power it with moderate overclocks on the GPU.

Between the two units you have mentioned, the Super Flower Golden Green unit is the better one as others have stated. The Seasonic G and X are based on different internal design, in which there's a clear difference in the internal layout.

That diagram is for the non-i AX1200. It uses a different pinout than the new Corsair's Type-3 pinout that the AXi is based off of. The only cable that is identical, AFAIK, is the 24-pin connector. http://www.jonnyguru.com/forums/showthread.php?t=13740

Aside from looking at the PSU's crossload profile or having the review outright telling you, the power specification chart will show that the 12V rail will not be equal to rated wattage in a group-regulated PSU (although, nowadays it had been getting pretty close). So if you want to avoid them and get a DC-DC / independent regulated PSU rated for 550w for example, it will either have a 12V rating of 45.83A (550/12) or 45A rounded down (never rounded up). There are exceptions to this though, where units like the Cooler Master GM / GXII Storm Edition (DC-DC) or the OCZ ZS / Rosewill Hive v1 (indy) has a lower 12V rating. If you are able to find images of the internals (sometimes the manufacturer themselves provide it in their marketing or sometimes through the fan grill), you can identify it from that as well. They do have some cases that certain designs makes it a little more confusing to identify though (like the Fractal Design Integra M seen as group-regulated). The Seasonic ST platform is kind of a hybrid, where it group-regulated (12V+5V) and have DC-DC for the 3.3V. On the secondary side of the power supply, there's a big output coil and a smaller one in a group-regulated design (Seasonic S12II-B), while an independent regulated PSU will have an additional small coil (OCZ ZS). However, in an indy design whose primary topology uses a LLC Resonant Convertor, the big 12V choke may not be present (Fractal Design Integra M). PSUs that uses a buck convertor / DC-DC to generate the minor rails from the 12V output typically have it integrated on a separate daughterboard or on the modular board, where you would either see one 12V choke or none in a LLC design. You can see this in the CXM 2015 and Seasonic X KM3.

Here's a post by McSteel of Jonnyguru.com: http://www.jonnyguru.com/forums/showpost.php?p=108453&postcount=3

The NEX-G / G1 is indeed a mediocre PSU, whose design is more suited in the ~550w and below range. Since your setup is peaking around ~250wDC during your typical load (mileage may varied depending on overclocks), you should be fine. Of course, since you haven't built it yet, getting a proper PSU first may be for the best, so you don't have to redo your cable management.

The ST45SF-G has the fan ramping up to 2500RPM min at low loads. Since the ST45SF Bronze v3 unit is a lesser efficient unit that will generate more heat, it shouldn't be any quieter. So to reiterate, the Silverstone SX500-LG or Corsair SF450 are the affordable, quiet options you should look at in the SFX form factor - the Corsair being the higher quality unit.

I would expect having the eco mode turned off would only make the fan fully active at 1000RPM+ min. At the end of the day, it just a matter how noise tolerant you are.

When Eco mode is on, it suppose to make it quieter as it will keep the fan off at lower loads and only turned on when the unit get hotter. The issue with the G3, at least with the 850-1000w models, the fan would ramped up at such a low threshold (under 100wDC), the passive mode is essentially useless. Once the fan does spins up (which should be true with eco mode on or off), it would go over 1000RPM making it one of the louder PSUs on the market in comparison to the previous G2 model and the Corsair RMx at the same price point. If you are getting a new PSU and is concern for noise, I would recommend looking at the G2 or Corsair RMx instead.

Newegg also have multiple of different vendors. The ones that are in stock may be from one of them and not their own. Also factors like RMAs and shipping out replacements may have affected the inventory they expected to have for the combo deal.

One or more of the items is out of stock.

If you are looking for a SFX PSUs, you want to expand your budget if you want a quality one that's also quiet. Like the Silverstone SX500-LG or the Corsair SF450, which I would go with the SF450 between the two.

As I stated in your other thread, the Corsair RMx is a good option, as shown in this review. http://www.tomshardware.com/reviews/corsair-rm550x-power-supply,4484-5.html

I guess it's an Rifle bearing (CX 2017) vs traditional sleeve bearing (B3 - it's not HDB. That was misadvertised), so since they both should be good budget units (to get the full picture of how good is it, we need to see a review on it), STRM will lean towards the rifle bearing option for longevity. Of course, the EVGA B3 is functionally superior as it is a fully modular unit and have more 6+2 pin PEG connectors for potential SLI / CFX configuration.

That's the Cooler Master Masterwatt Maker MIJ. It's a very expensive design that Cooler Master had been working on for years with the server-grade company Murata. That Circle is by no means similar in design with that unit - not even the higher-end unit I had seen from them is similar.

Seeing how those 500w units have the 12V rail only rated for 380w, it's more like a 400w unit by today's standard. Do you have any reviews (not from Amazon) on this Circle unit that you can make a statement that it will be better than the entry level Corsair VS450 that offer a higher rated 12V rail, two 6+2 pin PEG connector (the Circle only has one), and a known professional review [LINK]? Since the Circle internal design is unknown to me, I would rather put my investment in the VS450.

Seeing how there is no review on the Enhance build Masterwatt Lite and that the MWE had only been release just recently, you can't be sure of that. Especially considering the MWE only have a 300w / 25A rating on the 400w unit while the MWL has 360w / 30A. The MWE 400w is more like a <~350w by today's standard.

Seeing how he is looking at a non-modular PSU, it isn't referring to Semi-Modular Power Supply. What he is referring to is a Switch-Mode Power Supply which is what computer power supplies are.

I personally dislike the CX650 (2017 model) in comparison to the CX650M (2015) model, as it only has two 6+2pin PEG connector, but since you are getting it for a single GPU, this isn't an issue. For the lower priced and the better rifle bearing fan, I'd get the CX650 (2017). The Thermaltake TPD-0750M is based on the CWT CSG platform. It's a good platform that custom CXM 450-650w 2015 seem to be inspired upon. It offer better efficiency, a ball bearing fan, and four 6+2 pin PEG connector. $49.99 after MIR for a 750w unit isn't a bad deal, albeit overkill for a single GPU card like the GTX780. "bar the Seasonic G" means "except for / aside from the Seasonic G"

It seem that I'd lost my train of thought and went on a rant while not getting across what I wanted to say. I re-edited it, but I'll post it again. "TBH, it’s not a bad idea to have more options to choose from to maximized profit, as well as built a good business relationship with multiples OEMs to make future releases go more smoothly. It’s a good thing that EVGA is looking at other OEMs. My issue more has to do with how incomplete and out of placed some of their series are at the rate that they are coming out. It’s like they had gave full rein of the production of their PSUs to the OEMs (SF and the OEMs that they are sub-contracted to) and just putting out whatever they suggest. Basically, they are being too much of a dependent company and having the OEM define what they are."

Yeah, even if you were to put a heavy load on each of those components, that's still a ~300wDC setup. While it is budget unit that based on a basic design, the CX600 isn't as bad as some people make it out to be that it couldn't handle such loads. My point was simply that the CX850M is based on a more modern, superior design than the CX600 (even more so, since it will be an updated unit). And that if you are able to put $20 more into your budget, the RM850x is well worth the investment since it is on sale.

As of late, I've been seeing Corsair products to be a bit more competitive than before. It probably doesn't seem that way as you are comparing the cost of a budget series (CX850M) to an high-end one (RMx). The CX850M is based on a different and superior platform than your previous CX600. If you can though, I would recommend getting the RM850x that cost $20 more. It's a higher-end unit that offer better electrical performance, build quality, efficiency, full modularity, longer 10 year warranty, and quieter operation. https://www.newegg.com/Product/Product.aspx?Item=N82E16817139141