PSU tier list 2.0

[Deleted member 217926]

Yes, mods can see deleted posts. 😛

 

[Deleted member 217926]

can only mods post gifs? i want to post a gif.

You have to use an image hosting site like Imgur or Tinypic. Then you can post gifs or images.

 

[kwa-e]

Hey it's true isn't it? :I

 

[Deleted member 217926]

It is indeed. I wouldn't have commented otherwise.

 

[rcald2000]

FSP750-80APG

What tier does this power supply belong to? User is trying to power a GTX 980 Ti with it.

http://www.tomshardware.com/answers/id-3007756/gtx-980-wont-move-passed-boot-screen.html#17689175

 

[kwa-e]

An OEM model- likely a T3.

 

[Ake11a]

Hey guys, should i buy SeaSonic SSR-650RM 650W Gold or Seasonic M12II-620 Bronze 620W? And can SSR-650RM handle sli msi 970 with oc 4670k?

 

[Karadjgne]

While the M12-II 620w is an excellent psu, its not Haswell certified, it'll work, but care must be taken with low power settings and C6, C7 sleep states must be disabled or there can be some problems. The ss650 would be better in this case.

A single gtx970 usually is recommended a 500w unit, but considering the rarity of good 500w units compared to the choices at 550w, 550w is most commonly used.

4690k OC can easily see 200w. Another 100w for the rest of the system, and anywhere upto around 350w on sli 970's. So pretty much a 650w unit will see around 100% load if you really push the system. The ss650 will easily handle 100% load, but it's honestly not something recommended. Min recommended is 700w for sli 970's, but there too is a lack of quality units as compared to the pickings in the 750w bracket.

Evga B2 750w would be the cheapest solution for a quality 750w, but there are slightly better, but more expensive alternatives such as the G2, ss750w, X750 etc.

 

[Ake11a]

While the M12-II 620w is an excellent psu, its not Haswell certified, it'll work, but care must be taken with low power settings and C6, C7 sleep states must be disabled or there can be some problems. The ss650 would be better in this case.

A single gtx970 usually is recommended a 500w unit, but considering the rarity of good 500w units compared to the choices at 550w, 550w is most commonly used.

4690k OC can easily see 200w. Another 100w for the rest of the system, and anywhere upto around 350w on sli 970's. So pretty much a 650w unit will see around 100% load if you really push the system. The ss650 will easily handle 100% load, but it's honestly not something recommended. Min recommended is 700w for sli 970's, but there too is a lack of quality units as compared to the pickings in the 750w bracket.

Evga B2 750w would be the cheapest solution for a quality 750w, but there are slightly better, but more expensive alternatives such as the G2, ss750w, X750 etc.

Thank you for so fast and good answer This Haswell certified affects something besides c6/7? i have msi gaming 5 mobo and shity thermtake tr -2, but never run into problems, beacuse it disable frome the manufacturer), and i never use sleep mode)

 

[Darkbreeze]

Regardless of whether or not you manually use sleep modes, if you have a Haswell or newer Intel CPU, you need to either obtain a Haswell/Intel low power state compliant unit, or disable C6/C7 low power states in the bios. Not doing so could result in problems. It's a simple matter to turn the setting off in the bios. It's an even simpler matter to just get a unit that doesn't require doing that.

 

[Ake11a]

Hmm c6/7 was set on Auto, whatever it means, now i disable it, but still if i dont mind this turn on or off and sli, which one of them will be better?

 

[Darkbreeze]

Clearly the 650 gold Seasonic is better than the 620 bronze Seasonic, so I'd think that's an easy choice, but it's also more expensive, so it's really just a question of whether you can afford the higher end unit or need to save money by going with the M12II. Both are good, one is more expensive and the other one will require you to turn off the C6/C7 states, so as long as you don't mind doing that, the M12II will work fine. The other unit will work without needing to have those turned off.

 

[logainofhades]

I have the 650 seasonic in my own rig. It handles my power hungry 780ti folding nearly 24/7. If it isn't folding, it is gaming.

 

[Ake11a]

Okay then i go for SSR-650RM, big thanks to all for help

 

[naturesninja]

Never had any issues with the GB units and power states on Haswell or Skylake. The XFX TS 550w for example is the EXACT same internal unit as the S12II 620w, and is Haswell certified.

 

[Darkbreeze]

No, it is not. Neither the M12II 620 or S12II 620 are Haswell certified. The higher capacity M12II and S12II models are, but those are not. We've had, and verified, this question many times already.

 

[naturesninja]

No, it is not. Neither the M12II 620 or S12II 620 are Haswell certified. The higher capacity M12II and S12II models are, but those are not. We've had, and verified, this question many times already.

It is the exact same unit. I use them on a regular basis. I have taken them apart, there is NO Difference between the Xfx and SeaSonic units I mentioned internally, yet the XFX is haswell certified. I never said the SeaSonic was certified, as not Every unit is tested. I said an IDENTICAL unit by XFX is. Which it is.

 

[Karadjgne]

There is a difference somewhere or the 550w xfx and 520w/620w Seasonic would show similar outputs, which they don't. They may have the same design, but use different spec'd components. This could account for xfx having more stable output in C6, but since the older TS and the older 520/620 Seasonic as well as the Antec HCG are all group regulated design, not dc-dc, its doubtful they are Haswell capable. The TS 650 and m/S12II 650 use the AT/AM platform and are Haswell capable.

 

[Darkbreeze]

M12II 520 and 620. Not Haswell compatible, or it would say so:

http://www.seasonicusa.com/M12II-Bronze.htm


Same goes for S12II 520 and 620:

http://www.seasonicusa.com/S12II-Bronze.htm



However, the higher capacity 650, 750 and 850 clearly indicate Haswell compatibility. The lower capacity bronze units do not.

http://www.seasonicusa.com/M12II-Bronze-650-750-850.htm

 

[turkey3_scratch]

I didn't think group regulation can be Haswell compatible, can it?

On a second note. I couldn't give a crap for Haswell compatibility 😛 units like the S12ii do very well in crossloading anyway.

 

[Darkbreeze]

The 650, 750 and 850 are DC to DC, not group regulated. So you are correct. I'm not aware of any group regulated designs that are C6/C7 compatible. There might be, but I haven't seen one that I'm aware of.

 

[turkey3_scratch]

What is it that makes DC-DC only Haswell compatible?

 

[Darkbreeze]

According to Intel's presentation at IDF, the new Haswell processors enter a sleep state called C7 that can drop processor power usage as low as 0.05A. Even if the sleeping CPU is the only load on the +12V rail, most power supplies can handle a load this low. The potential problem comes up when there is still a substantial load on the power supply's non-primary rails (the +3.3V and +5V). If the load on these non-primary rails are above a certain threshold (which varies by PSU), the +12V can go out of spec (voltages greater than +12.6V). If the +12V is out of spec when the motherboard comes out of the sleep state, the PSU's protection may prevent the PSU from running and will cause the power supply to "latch off". This will require the user to cycle the power on their power supply using the power switch on the back of the unit.

Apparently, group regulated designs are not able to do this.


Plus, because ko888 said so :

http://www.tomshardware.com/answers/id-1778552/haswell-ready-psu.html

 

[turkey3_scratch]

Ahh, so it does have to do with the crossloading. Okay. Yeah, if you think of it, if there is 0.05A on the 12V rail, the RAM is still going to be using some of that 3.3V, so yeah that 12V rail would go super high if it was not DC-DC. Makes sense.

Also, why do we use 12V for the CPU when the VRM brings it down to like 1.3V anyway?

 

[toyftw]

According to Intel's presentation at IDF, the new Haswell processors enter a sleep state called C7 that can drop processor power usage as low as 0.05A. Even if the sleeping CPU is the only load on the +12V rail, most power supplies can handle a load this low. The potential problem comes up when there is still a substantial load on the power supply's non-primary rails (the +3.3V and +5V). If the load on these non-primary rails are above a certain threshold (which varies by PSU), the +12V can go out of spec (voltages greater than +12.6V). If the +12V is out of spec when the motherboard comes out of the sleep state, the PSU's protection may prevent the PSU from running and will cause the power supply to "latch off". This will require the user to cycle the power on their power supply using the power switch on the back of the unit.

Apparently, group regulated designs are not able to do this.


Plus, because ko888 said so :

http://www.tomshardware.com/answers/id-1778552/haswell-ready-psu.html

^^^ LOL - Good enough for me!