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Old 06-05-2017
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Arrow Corsair TX850M (2017) Review

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Once upon a time, a company by the name of Corsair made a splash in the power supply world by releasing a line of popular units known as the TX series. These were fifty degree temp rated workhorses that, while not anything too special, were just special enough to be very popular among those needing decent enthusiast level performance on the cheap. A lot of people were disappointed when the TX line went away. But now, they're back. Are they as good as they used to be? We shall find out.
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Old 06-05-2017
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Dear OW, is that VSB Overshoot Transient Testing really "flawless"?

I mean, what's up with the end of the slope? Was it spectacularly indecisive that morning?
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Old 06-05-2017
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Holy crap. I wasnt expecting this.
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Old 06-05-2017
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@Wolf;
The cable table on page 2 lists the 24pin & 4+4pin cables as being modular.

There is a definite downside to the lack of two CPU power cables on this unit though; with Threadripper & X299 coming, and most if not all boards having 2 connectors, it definitely seems like an oversight.
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Old 06-05-2017
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Agreed, every high quality modular PSU starting with 450W or 550W should have two EPS connectors imo.
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Old 06-05-2017
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@Wolf;
The cable table on page 2 lists the 24pin & 4+4pin cables as being modular.

There is a definite downside to the lack of two CPU power cables on this unit though; with Threadripper & X299 coming, and most if not all boards having 2 connectors, it definitely seems like an oversight.
Well in the end the consumer will probably know whether or not he/she needs 1 or 2 and can respectively buy a power supply to fit his/her needs.
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Old 06-05-2017
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That's quite difficult nowadays. Just point to some power supplies intended for a setup with a Treadripper, Kaby Lake X or Skylake X CPU combined with a motherboard that needs the second EPS connector and a graphics card that takes less then 200W. You won't find many.

I know the be quiet! Dark Power Pro 11 550W. EVGA SuperNOVA GS 550W isn't available here anymore, looks EOL.
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Old 06-05-2017
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Originally Posted by -The_Mask- View Post
Agreed, every high quality modular PSU starting with 450W or 550W should have two EPS connectors imo.
It should be standard on 750w and up at least. Especially since they went cost-savings on this unit and it only has 4 PCIe cables, those being the two connectors on one strand variety.

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Originally Posted by turkey3_scratch View Post
Well in the end the consumer will probably know whether or not he/she needs 1 or 2 and can respectively buy a power supply to fit his/her needs.
Yes, but the point is that this unit ticks all the right boxes besides that. Cabling is such a basic thing that I feels as though it shouldn't be messed up. With such an oversight it really diminishes the value of the unit in my opinion.
We can talk numbers all day, but more cables are better for the end user than sub 20mv ripple and better than 1% voltage regulation.

If you just look at Corsair's line-up right now on Newegg (for semi-standardized pricing in the US) you have this breakdown on 850w units:
CX-M
  • 80+ Bronze
  • $99
  • 1 CPU Power Cable
  • 3 PCIe connectors
TX-M

  • 80+ Gold
  • $109
  • 1 CPU Power Cable
  • 4 PCIe connectors
RMx
  • 80+ Gold
  • $119
  • 2 CPU Power Cables
  • 6 PCIe Connectors
Now if we ignore the CX-M for a moment, we can see that an aditional $10 gets you similar levels of performance, efficiency, build quality, etc but the additional functionality that should come standard on a unit of this capacity.



I know WHY TX-M exists in the market from a pure, business standpoint, but from an external perspective I'm saying that it doesn't really make a lot of sense. That is just when you consider what Corsair's line-up consists of unit wise.



It's also worth noting that Corsair's 850w line-up does feature virtually the same cable-connector count from the RMx and upwards.



With all of that said, if you go outside what Corsair is producing and look at other units like:
BitFenix WisperM 850w ($99)

Rosewill Capstone M 850w ($105)

EVGA GQ 850w ($109)


Here you have three units with equal connector counts in regards to 4pin Peripheral connectors & SATA Connectors but 2 more PCIe connectors and an extra 8pin CPU power cable while still having a similar cost, efficiency, and warranty length.

Now, I will say that electrically these three units do not perform as well as the TX-M does but that does not mean they are slouches in any regard either. They still do the job and do it well.
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Old 06-06-2017
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I wonder if a split ribbon is easier to manage at the PSU end of a fixed cable.
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Old 06-07-2017
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Also, on one of my Gigabyte boards, the extra power came in from SATA, not a CPU port.
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