EVGA G3 vs P2 - which has better components?

The price of the 750 G3 is farly similar to the 750 P2

The G3 is newer, but does the P2 has better internal components?

The G3 seem to have a expose copper wire (on the bottom right of the picture below), where the P2 has it all cover with a black finnish. Can someone explain it to me? Does this reduze the chances of coil whine?

P2:


G3:


Which of the two would be the best choice and will be quieter at 50% load (the top load I would ever use)? Which has better internal components and would most likely do no coil whine?

Also, the P2 has thicker wires -16AWG vs 18AWG- Any advantage on having ticker wires? (other then the disadvantage of harder cable management)

Finally, should I pay a bit more and go with the 850 P2? Would it be quieter?
Reply to Yuri_BR
10 answers Last reply
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  1. Can't really go wrong with either, they're both great and I doubt either of them will give you coil whine, especially at this price point. I find that coil whine is much more common in graphics cards or lower tier motherboards. I would go with the P2, just because $10 is worth the Platinum rating.

    Although, if you want truly quiet why not go a Seasonic Fanless for basically the same price:

    https://pcpartpicker.com/product/4YphP6/seasonic-power-supply-ss520fl2

    The Seasonic PRIME series is also a great choice and are probably the highest quality PSUs on the market right now:

    https://pcpartpicker.com/product/pHFXsY/seasonic-prime-platinum-650w-80-platinum-certified-fully-modular-atx-power-supply-ssr-650pd

    http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story5&reid=514
    Reply to Silverbear
  2. Actually, if you are not using it 250w gpu like the 1080ti, all you need is a 550w. A quiet solid model :https://pcpartpicker.com/product/3zNypg/corsair-power-supply-cp9020090na
    Reply to Lucky_SLS
  3. Silverbear said:
    Can't really go wrong with either, they're both great and I doubt either of them will give you coil whine, especially at this price point. I find that coil whine is much more common in graphics cards or lower tier motherboards. I would go with the P2, just because $10 is worth the Platinum rating.

    Although, if you want truly quiet why not go a Seasonic Fanless for basically the same price:

    https://pcpartpicker.com/product/4YphP6/seasonic-power-supply-ss520fl2

    The Seasonic PRIME series is also a great choice and are probably the highest quality PSUs on the market right now:

    https://pcpartpicker.com/product/pHFXsY/seasonic-prime-platinum-650w-80-platinum-certified-fully-modular-atx-power-supply-ssr-650pd

    http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story5&reid=514


    I would love to go with the seasonic PRIME, the problem is that they don't sell them on my country. The best options I have here for a resonable prices ate Evga and corsair RM750i (witch cost more and has less cables to connect stuff in case I need it someday). We had XFX but can't find them anymore

    The best options I have here in Brazil now are (1 US Dollar = R$ 3.30 )

    Corsair RM750I.......R$ 781 (or 236 USD)
    EVGA 850 P2..........R$ 809 (or 245 USD)
    EVGA 750 P2..........R$ 780 (or 236 USD)
    EVGA 750 G3.........R$ 730 (or 212 USD)
    EVGA 850 G3.........R$ 800 (or 242 USD)

    Corsair RM650I......R$714 (or 216 USD)
    EVGA 550G3.........R$524 (or 158 USD)

    Considering those options, I think 750 G3 or 750 P2 would be the best picks, I want to buy something that will last me many years without problems and that can hold SLI or crossfire in case I do it someday. The better efficience is not a big deal to me, but noise and quality of the internal components are. So I go with the P2?

    Do you have any idea why the G3 has an exposed coil (bottom right of picture) while the P2 has it covered?
    Reply to Yuri_BR
  4. The G3's coil is "exposed" versus the P3 because the P3 uses copper bar instead of copper wire. This increase conductivity increases efficiency.

    They don't have RMx? What store are you buying from where they have such limited selection? I'm guessing you found a cheaper than usual vendor since the prices you listed are pretty good for Brazil (compared to Kabum, at least), but RMi is usually $10 to $20 USD more than RMx because of the Corsair Link and the FDB fan. Have you tried other stores?

    Also, how does the Corsair have less cables make a difference? The EVGA has four separate PCIe cables, but they're one to one (one PCIe each). The RM has two cables with two PCIe connectors on each. So they both have four PCIe connectors.
    Reply to jonnyguru
  5. Just based on your list (yikes those prices) I would go with the G3 550.

    It will last for years, 550 Watts is plenty of power for pretty much any computer and the fact that you're just thinking about SLI "someday" and not right now. Basically, it suits your needs perfectly right now. If really you want 750 Watts, I would go for the P2, because I think the build quality is slightly better than the G3.
    Reply to Silverbear
  6. Sli or cfx huh? Choose the 850g3 or 850p2 and call it a day. No hassle down the road.
    Reply to Lucky_SLS
  7. jonnyguru said:
    The G3's coil is "exposed" versus the P3 because the P3 uses copper bar instead of copper wire. This increase conductivity increases efficiency.

    They don't have RMx? What store are you buying from where they have such limited selection? I'm guessing you found a cheaper than usual vendor since the prices you listed are pretty good for Brazil (compared to Kabum, at least), but RMi is usually $10 to $20 USD more than RMx because of the Corsair Link and the FDB fan. Have you tried other stores?

    Also, how does the Corsair have less cables make a difference? The EVGA has four separate PCIe cables, but they're one to one (one PCIe each). The RM has two cables with two PCIe connectors on each. So they both have four PCIe connectors.


    Are you The Jonnyguru? Love the website

    So both G3 and P2 have same build quality, and the exposed coil just make a diference in efficiancy? No diference on maybe some eletrical noise or coil whining?

    What about the wire thickness (16 awg vs 18 awg)? Thicker wires on Pci-e and ATX cables will deliver a cleaner power? I saw that both evga P2 and corsair PSU have the 16awg wires.

    Also, Corsair has one less EPS/ATX 12V 4+4 pin, can that be an issue for future Pc builds?

    There are more PSU models in stores, but most are cheaper entry models. Our taxes are crazy high, most americans wouldn't pay 200 USD for a PSU, so you can imagine that even less brazilians are willing to do so. The result is that we have a bunch of entry models but only few Gold and Platinum PSUs because they don't sell much. (I couldn't find any online store selling a Titanium PSU in Brazil, for example).

    Kabum is one of the biggest online stores, and even them don't have many options - if you are curious, here a list of all their 750w PSUs currently avalible: https://www.kabum.com.br/hardware/fontes/linha-700-w/750-w?ordem=4&limite=30&pagina=1&string=

    I did find the Hxi750i but at R$ 1187 (or 360 USD) that's too much money for me. The Evga 750 P2 cost usualy the same price (over R$1000), but I found it on sale. I would't buy the RMx, I would rather go then for RMi series.

    So long story short, I can buy Evga 750 P2, EVGA 750 G3 or Corsair RM750i for similar prices. My findings so far:

    1) EVGA 750 G3 is compact, has "mythic regulations numbers", a FDB fan but some people complain about the ecomode being noisy when fan turns on (at least on the 850w model).
    2) EVGA P2 750 has a ball bearing fan but it only kicks in at 300w usage - so the fan will probable not wear out so much and should be silent most of the time, it's platinum, but has an older project desing then the G3;
    3) Corsair RM750i, has FDB fan, is probably the most silent of all, but is 180mm in size (witch may not fit so well inside my corsair 400q case) and warranty is 7 years (evga's is 10 years).

    My idea is to spend money on a good PSU that will last literally for 7-10 years without problems. (I still have a 7 years old PC running a Phenom II 1090T, Lol). Time for an upgrade! Two years ago 1 US dollar was R$ 2.3 - now it's at R$ 3.3, so my buying power today is shorter then it was. I can't know what will happen in the future, that's why I'm so concern about buying something of quality that will last a really long time and be as future proof as possible.
    Reply to Yuri_BR
  8. Yuri_BR said:


    Are you The Jonnyguru? Love the website

    So both G3 and P2 have same build quality, and the exposed coil just make a diference in efficiancy? No diference on maybe some eletrical noise or coil whining?


    Pretty much the difference is efficiency. That's it.

    Yuri_BR said:

    What about the wire thickness (16 awg vs 18 awg)? Thicker wires on Pci-e and ATX cables will deliver a cleaner power? I saw that both evga P2 and corsair PSU have the 16awg wires.


    Not "cleaner" power. Just less voltage drop. Lower gauge wire creates resistance and this can cause the voltage to drop at really high loads.

    Yuri_BR said:

    Also, Corsair has one less EPS/ATX 12V 4+4 pin, can that be an issue for future Pc builds?


    Not in most cases. 99% of the motherboards out there that have two EPS12V connectors on them work with just one. If I was doing competitive overclocking, I would make sure I had both... but I also would be using a Corsair RMi or EVGA B3. ;)

    Yuri_BR said:

    I did find the Hxi750i but at R$ 1187 (or 360 USD) that's too much money for me. The Evga 750 P2 cost usualy the same price (over R$1000), but I found it on sale. I would't buy the RMx, I would rather go then for RMi series.


    Ok... STOP. Why? What's the logic there? You're willing to buy the EVGA which has no monitoring or control capability, but not the RMx? That doesn't make sense. Internally, the RMx and RMi are the exact same thing. So if you're willing to buy the EVGA without Corsair Link functionality, why is the Corsair PSU with Corsair Link functionality your only consideration?

    Sounds like you've absorbed some misinformation about the difference between the RMx and RMi.

    Same is true with the HX versus HXi.
    Reply to jonnyguru
  9. Thanks for the hit and run post in the forums. Hope you're doing well in life. You will be missed.
    Reply to jonnyguru
  10. jonnyguru said:
    Thanks for the hit and run post in the forums. Hope you're doing well in life. You will be missed.


    Update:

    This week there was a game change: Corsair Hx750 (the platinum, not the old version). That PSU is just perfect for me.

    The store I was going to buy the EVGA 750P2 (or the evga G3) now has the new Corsair HX750 at a great price point! I can get a platinum PSU with corsair at similar price point of EVGA's P2 or even G3 series. Nicely done Corsair! At R$ 730 (or 212 USD) this is a great deal in Brazil! This new HX rocks!

    The HX750 has 2x 4+4 pin for cpu and 4x pcie 6+2 for GPU (evga G3 has 6x pcie, but it uses 18awg, while corsair HX uses 16awg) - since I'll never use more than 2 Gpus, that's fine.

    Even better than the platinum certification is the Cybenetics report that goes much deeper in analyzing a PSU: https://www.cybenetics.com/code/pdf.php?id=TH3

    Cybenetics report of the HX750 is just like reading a beautiful poetry: quiet FDB fan, low ripples, great voltage regulations and amazing holdup time. All the good stuff I was looking for.

    (By the way, where is your Cybenetics report of the G3 750 and P2 750, EVGA? 80 plus certification is not enought nowadays).

    Corsair's new HX750 has 10 years warranty, now on pair with Evga's. However, there is a big difference here: searching and talking in Brazilian forums, I found out that Corsair has an RMA service in Brazil, while EVGA would send my PSU to USA in case of any problem. Finally, unlikely most companies, Corsair indeed honor their on box labeled warranty (many companies have a different and a lower 1 year warranty for Brazil, no matter what is written on the box).

    For me, the biggest drawback of the hx750 is its 180mm length. I use a compact Corsair 400q, so it can be a problem. I think I can make it fit by repositioning the HDD case closer to the fan, but it will be tight nevertheless. It would be nice if Corsair could make future PSUs of this 750w series a bit smaller (like 165mm or 170mm). However, that's not a deal breaker (as long as it indeed fit).

    It would also be nice if Corsair included a single 6+2 pcie cable (not only the dual ones), so that the extra 6+2 pin would not be hanging lose when not needed - but that’s just minor nitpick.

    Another consideration is about Corsair recycling the name “HX” - it’s very confusing. When I googled searching for reviews of the HX750, the top results were 2009 articles. Couldn’t Corsair just use something like “HX750 v2”? Would be far more intuitive. Anyway, it gave me more work then necessary, but I found the right reviews of the 2017 platinum variant, not a bit deal.

    In conclusion, with the HX750, Corsair just become the better option for me (against either Evga’s P2 or G3). Corsair is offering a great performance and price with this new HX (I really do not care about usb link to monitor stuff and HX750i is crazy expansive in Brazil anyway). Honestly, the feeling I have is that Corsair filled a gap: with the HX750 I found the level of performance I was searching for, at a price I can pay. The fact that corsair offer technical support in Brazil with local RMA, just sealed the case in its favor. (I’ll probably never need an RMA, but knowing it’ll be there in my country if needed, just give me peace of mind). I should be buying it next week, with my next payment! :-)

    Thanks everybody for your help and ideas!
    Reply to Yuri_BR
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