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[Review] Corsair TX650v2 -- Phaedrus Reviews

post #1 of 29
Thread Starter 
I've been busy so this one is way late, but hey, I did get it done. This is the new Corsair TX650v2, which along with the TX750v2 and TX850v2 are Corsair's replacements for the aging TX series (TX950 will presumably remain as-is or be discontinued).


Box Shots Warning: Spoiler! (Click to show)
tx650v2_box1_by_phaedrus2401-d3euteh.jpg
tx650v2_box2_by_phaedrus2401-d3eutf6.jpg
tx650v2_box3_by_phaedrus2401-d3eutfr.jpg
tx650v2_box4_by_phaedrus2401-d3eutgf.jpg
tx650v2_box5_by_phaedrus2401-d3euthb.jpg

The packaging is tasteful and the omnipresent marketing not too obnoxious. We learn that the unit is 80PLUS Bronze certified and designed for the ATX12V 2.3 and EPS12V 2.91 standards. A handy load table tells us this PSU has a single +12V rail rated for 53A/636W, which is a very respectable +12V rating for a 650W PSU of this class.

This PSU also comes with a five year limited warranty.


Exterior Warning: Spoiler! (Click to show)
tx650v2_outside1_by_phaedrus2401-d3euvce.jpg
tx650v2_outside2_by_phaedrus2401-d3euve9.jpg
tx650v2_outside3_by_phaedrus2401-d3euvf3.jpg
tx650v2_outside5_by_phaedrus2401-d3euvgo.jpg

The power supply comes well packaged, with a power cord, manual, and bag of zip ties, and is wrapped in a faux-velvet bag. Incidentally, of the three Corsair PSUs I've unboxed, each one has a bag with a different texture. They must switch suppliers a lot. But this is one of the nicer ones for sure, though it still baffles me what it's for other than scratch protection.

The finish is of high quality and relatively tasteful, though the yellow and white letters may be a bit out of place in some cases, especially those with a blue and black theme (which seems to be the standard for most cases). If your case has a window make sure that this PSU will go well with your color scheme if you care about that sort of thing.

All cables are fully sleeved to inside the housing, and the sleeving is of decent quality. The cable load-out is adequate for a PSU of this size, with a 20+4 pin ATX connector, a 4+4 pin ATX12V/EPS12V connector, two 6+2 pin PCIe connectors, and a plethora of SATA and Molex connectors. I would like to see an additional two 6-pin PCIe connectors, as a PSU of this wattage and quality is more than capable of powering a pair of high-end graphics cards, such as GTX560Ti's or HD6950s.


Interior 1 Warning: Spoiler! (Click to show)
tx650v2_inside1_by_phaedrus2401-d3euwqi.jpg
tx650v2_inside2_by_phaedrus2401-d3euwra.jpg
tx650v2_inside4_by_phaedrus2401-d3euwui.jpg
tx650v2_inside5_by_phaedrus2401-d3euwvu.jpg

This PSU is built on SeaSonic's new SS-***AT platform, which has yet to receive a retail name (such as S12, S12II, M12D, X, etc.). This same platform is also used in the XFX Core Edition series, which are nearly identical to the TXv2.

The fan used is a Yate Loon D14BH-12, which is a ball bearing 140mm fan rated for 140CFM at 48dBa. The fan is PWM controlled, with a thermistor on the secondary heatsink.

The EMI/transient filter is robust, with 4 Y capacitors, a coil, and an X capacitor housed on a daughterboard at the AC receptacle, and an additional 2 Y capacitors, 2 coils, another X capacitor, a MOV, and an NTC thermistor on the mainboard.


Interior 2 Warning: Spoiler! (Click to show)
tx650v2_inside8_by_phaedrus2401-d3euwzi.jpg
tx650v2_inside6_by_phaedrus2401-d3euwwv.jpg
tx650v2_inside7_by_phaedrus2401-d3euwxr.jpg

The primary circuit of this power supply is based on a resonant two transistor forward (aka "double forward") topology with active PFC. APFC is implemented the standard way, with a synchronous boost converter between the bridge diodes and the primary caps. Primary capacitors are from Rubycon and are rated at 105C.

The primary is regulated by a CM6802 PWM/PFC controller, a more efficient update of the omnipresent CM6800 controller.


Interior 3 Warning: Spoiler! (Click to show)
tx650v2_inside9_by_phaedrus2401-d3eux0d.jpg
tx650v2_inside10_by_phaedrus2401-d3eux1g.jpg
tx650v2_inside11_by_phaedrus2401-d3eux2l.jpg

The secondary of this PSU is based on a "DC-DC" configuration. The main transformer has only two output windings (+12V and isolation) rather than the usual four (+12V, +5V, +3.3V, isolation). The +12V is generated by a set of mosfets and regulated and filtered by a large coil and set of capacitors. The +5V and +3.3V rails are generated from the +12V output by a pair of synchronous buck converters, housed on a separate daughterboard. This allows for high efficiency by reducing the power wasted by the +5V and +3.3V rails which are lesser used, while still adhering to ATX specifications for +5V and +3.3V capacity and regulation.

All secondary filter capacitors are from Nippon Chemi-Con and are rated at 105C.



In Summary

The Corsair TX650v2 is an excellent successor to the aging TX line of power supplies, living up to modern quality standards for enthusiast PSUs while also being more efficient and better performing (based on tests by reviewers who have the equipment to test with).

At $94.99 at Newegg it sits at a rather average value point. The Antec TruePower New is the main threat to the TX650v2, as it offers slightly better performance and partial modularity at a similar price point. However the Antec fluctuates in price often, and there are rumors that it may be discontinued soon, after being made redundant by the High Current Gamer series.

Its other main competition is the XFX Core Edition 650W, which is almost the exact same unit. It has two advantages: first, it has four PCIe connectors instead of only two, allowing you to take full advantage of the PSU without using molex-PCIe adapters. Second, it sells on Newegg right now for only $89.99, $69.99 after rebates. However, you have to deal with XFX's rather lackluster customer service. Your choice.

Overall the TX650v2 is a very high quality PSU and I can easily recommend it. Just keep in mind that there's lots of competent competition in this price and wattage range. The TX650v2 manages to hold its own, but doesn't quite shine in any particular area.


EDIT: Since time of writing, as of May 7th the Antec TruePower New 650W is discontinued on Newegg, and other TruePower New units are going in and out of stock. In addition the TX650v2 has decreased in price to $89.99, $74.99 after MIR. This improves its relative value greatly.
Edited by Phaedrus2129 - 5/17/11 at 12:13am
post #2 of 29
Thread Starter 
CHEAP STUFF

I need review samples, so I'm offering a deal: I'll ship my TX650v2 sample to you for free, on the condition that you buy me the following PSU:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817822004&cm_re=diablotek_phd-_-17-822-004-_-Product
Think about it: You'll be getting a brand new, unused (though warranty-voided) $95 PSU for $56! If you need a cheap PSU upgrade, this is the way to go.


PM me if you're interested.



done
Edited by Phaedrus2129 - 5/10/11 at 5:57pm
post #3 of 29
Great little review, dude. thumb.gif
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post #4 of 29
Thread Starter 
Quote:
Originally Posted by GameBoy;13267994 
Great little review, dude. thumb.gif

Thanks. smile.gif
post #5 of 29
I know what you mean, but maybe you should explicitly state that the same platform is used in XFX Core 650/750/850 (and not 450/550) just so people are not potentially mislead.

Personally I think not including 4 PCI-E connectors is rubbish, even if there are a lot of molex connectors to use for adapters. It's not a problem because I'm sure everybody has those adapters handy and lying around, but it seems cheap, especially since the +12V output quality is so good and goes to 636W. Running two GPUs is well within the capabilities of the unit, and you'd need to do so in order to get anywhere close to the 650W power draw anyway.
post #6 of 29
Thread Starter 
Quote:
Originally Posted by mikeaj;13268971 
I know what you mean, but maybe you should explicitly state that the same platform is used in XFX Core 650/750/850 (and not 450/550) just so people are not potentially mislead.

Personally I think not including 4 PCI-E connectors is rubbish, even if there are a lot of molex connectors to use for adapters. It's not a problem because I'm sure everybody has those adapters handy and lying around, but it seems cheap, especially since the +12V output quality is so good and goes to 636W. Running two GPUs is well within the capabilities of the unit, and you'd need to do so in order to get anywhere close to the 650W power draw anyway.

I did mention in one or two places that the XFX units are the same. wink.gif

Corsair's webpage bills the TX750v2 and TX850v2 as being for "systems with large RAID arrays or multiple GPUs". I think they're trying to coerce buyers into getting the more expensive 750W or 850W versions for dual GPU systems, even though the 650W is more than capable.
post #7 of 29
I really wanna see that Diablotek....Grr...No money though. Sorry.

I'd like to do reviews in the same way. I've been building up my electronics experience over the last year or two and I'm 1000% smarter in the subject area than I was before.

Hey I was wondering. I was on seeedstudio the other day, (not sure if you are familiar), and they had this O-scope.

http://www.seeedstudio.com/depot/preorder-dso-quad-beta-test-p-736.html?cPath=174

It has more than enough bandwidth to handle computer PSUs fine. Quality seems very good. It's open source, and the first official release is in May. Here's a video of the Beta release:

[ame]http://www.youtube.com/watch?v=PCPNe_9GS3I[/ame]

Any thoughts?

I don't think we'd need dead-on $10,000 O-Scope readings for a PC PSU reviews. It's kind of just for a general feel. Precision is nice, but let's balance the price/performance scale...
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post #8 of 29
Great review looking for a new PSU for a client and this just might be the unit I pick for him.
    
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post #9 of 29
Thread Starter 
Quote:
Originally Posted by TheLaw;13300391 
I really wanna see that Diablotek....Grr...No money though. Sorry.

I'd like to do reviews in the same way. I've been building up my electronics experience over the last year or two and I'm 1000% smarter in the subject area than I was before.

Hey I was wondering. I was on seeedstudio the other day, (not sure if you are familiar), and they had this O-scope.

http://www.seeedstudio.com/depot/preorder-dso-quad-beta-test-p-736.html?cPath=174

It has more than enough bandwidth to handle computer PSUs fine. Quality seems very good. It's open source, and the first official release is in May. Here's a video of the Beta release:

http://www.youtube.com/watch?v=PCPNe_9GS3I

Any thoughts?

I don't think we'd need dead-on $10,000 O-Scope readings for a PC PSU reviews. It's kind of just for a general feel. Precision is nice, but let's balance the price/performance scale...

I was looking at the Rigol DS1052E:
[ame="http://www.amazon.com/Rigol-DS1052E-50MHz-DSO/dp/B001VK4TI2"]Amazon.com: Rigol DS1052E 50MHz DSO: Home Improvement[/ame]

It's a relatively cheap $400, and can be firmware flashed into the $800 DS1102E which has double the bandwidth.
post #10 of 29
My only gripe with the corsair is that I would like it to be partly modular. Otherwise looks like a solid performing PSU.
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