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Looking for a good PSU for my R9 280X Toxic

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  • R9 280X
Last response: in Components
January 26, 2014 8:26:50 AM

Hello everyone

I've already found a few similar questions regarding the PSU and the Sapphire R9 280X Toxic card.
However, I'm in need of enough connectors on my PSU, since this is a problem I'm having with my current PSU.

I have the following case: Zalman Z11 Plus and it has 5 included fans, which I would like to be able to connect.

I don't know that much about the connectors, but I had to use a converter for connecting my 280X toxic on my current PSU. This caused a lack of molex connectors for the Case fans.

So I kind of need a PSU that can connect my 280X Toxic without needing to use the cable converters.

I'd also prefer something around 800-850W (I think is good enough with room for expansion, correct me if I'm wrong)

Thank you very much everyone

Edit: Oh yeah, and a good certificate would be great aswell :)  80Plus Silver or Gold

More about : good psu 280x toxic

a c 5958 ) Power supply
January 26, 2014 8:39:21 AM

Made by the best SEASONIC.

PCPartPicker part list / Price breakdown by merchant / Benchmarks

Power Supply: Cooler Master V850 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($159.99 @ Newegg)
Total: $159.99
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-01-26 11:39 EST-0500)M/B

20+4 Pin x 1
CPU 4+4 Pin x 1
PCI-e 6+2 Pin x 6
SATA x 9
4 Pin Peripheral x 4
4 Pin Floppy x 1

Best solution

a c 277 ) Power supply
January 26, 2014 8:40:13 AM

Your particular card needs 2 8-pin connectors, a bit more than the usual R9-290X.
A good 650w psu will supply that.
I have no problem overprovisioning a PSU a bit. Say 20%.
It will run cooler, quieter, and more efficiently in the middle third of it's range.
A PSU will only use the wattage demanded of it, regardless of it's max capability.

If you are planning on dual cards, the extra card will take up to an added 375W. The toxic is a very power hungry card. My plan for upgrade would hopefully be a 9000 series card or Maxwell which should appear by the end of the year. That would be a card in the 950w area.

A quality psu will deliver advertised power.
Seasonic makes about the best units.
Here is a X650 :
If you want stronger, look at their other X series units.
Related resources
a b ) Power supply
January 26, 2014 8:41:30 AM

what is the make/model of your current PSU? A system running a single 280X only requires a 600W PSU according to here:

However, if you are overclocking, I suggest adding 50-100W on to their recommended wattage. If by future expansion you are talking about adding another 280X, then you're probably want to get something in the 1000-1050W range. Stick with quality PSUs from top tier companies such as Seasonic, XFX, Corsair (except their CX series) or Antec.
a c 5958 ) Power supply
January 26, 2014 8:55:27 AM

He stated : I'd also prefer something around 800-850W (I think is good enough with room for expansion, correct me if I'm wrong.)
January 26, 2014 9:17:17 AM

Wow, didn't expect such a fast reply :) 

Thank you everyone!
My current PSU is a Corsair Builder CX500 V2, which i'm not really positive about. After about a year of running on my Phenom II X4 with a HD6850, it started making a high pitch sound. I've been continueing to use it, even after my upgrade to the 280x.

Lately, my 280x has started to make some weird pitched sounds aswell, I've read a bit on the web and it seems bad PSU's cause this in many of the occasions. I'm not entirely sure if it's going to be the cause, but I might as well start with getting a new PSU. It's something I had planned but didn't push it because I'm trying to save some money aswell :) 
a c 5958 ) Power supply
January 26, 2014 9:20:01 AM

A Radeon R9-280X - needs at least 30A on the 12v rail and a 550w supply.

The builders CX series is a budget power supplies with cheap capacitors , I would up grade.
January 26, 2014 9:40:47 AM

Yes, that's the plan :p 

I've looked into a few options and was checking the Seasonic X-850 PSU.
Now here's my idea so far:

ATX standard: 2.3
20+4-pins Motherboard plug: 1x
4+4-pins ATX 12V plug: 1x
8-pins EPS 12V plug: 1x
6+2-pin PCI-Express plug: 4x
SATA stekker: 8x
4-pin Molex plug: 8x
4-pin Floppy plug: 2x

It only comes with 1x 8pin EPS plug so I would still need to convert 2 of the molex plugs into 1x 8pin EPS plug. This leaves me with 6 molex plugs. As far as I know I only need 5 of those for the fans of my case.

Now... I'm very new to the modular PSU part. Will all of the included connectors be able to fit on the PSU together? Or would a few of those molex plugs be spare parts?
a c 5958 ) Power supply
January 26, 2014 9:44:22 AM

You can use them all if you need to.
a c 277 ) Power supply
January 26, 2014 10:31:54 AM

The EPS lead is for the motherboard and CPU.
The 6+2 pcie leads are what you use for the graphics card.
They fit both 6 and 8 pin. For 6 pin, the +2 is just left disconnected.

All the leads can be attached concurrently if needed. You will have a fair number which can be left unattached because they are not needed.

Even though your CX500 has 2 6+2 leads, it can deliver only 38a total.
The X650 has 4 6+2 leads and can deliver 54a.
The X850 also has 4 6+2 connectors but can deliver 70a.
The x750 is in between with 62a.