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 Posted: Mon, 29th Nov 2010 10:07 Post subject: Power Supply for SLI and CF |
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What kind of wattage range should I be looking at for lets say 2xSLI or 3xSLI for the future? Currently I have a 750W Corsair. I sold the BFG PSU
ASUS Maximus XII Formula | Core i9 10900k @ 5.2Ghz | 32GB G.Skill DDR4 4200Mhz | EVGA RTX 3080 Ti FTW3 Ultra Hydro Copper | ASUS ROG PG35VQ
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Gomp
Posts: 626
Location: Norway
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| Posted: Mon, 29th Nov 2010 15:29 Post subject: |
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The more the merrier id say just to be on the safe side.
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| Posted: Tue, 30th Nov 2010 23:28 Post subject: |
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750 W is fine for 2xSLI...
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| Posted: Wed, 1st Dec 2010 00:02 Post subject: |
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The Corsair 750w is good for 3 cards as well.
4 would be pushing it to the limits though. It could handle 4 - But it would be running full tilt to do so, which you don't want.
2 cards is easy. Ran 2 Gen1 GTX260's for over a year on mine no problem, and 2 8800GT's before that.
Don't bother upgrading unless you want 4 way. The Corsair 750w really is a good PSU. (Basically a re-badged Seasonic, and Seasonic makes the best in the business.) No reason to upgrade. For the money spent it is definatly one of the best. When I got mine 2 and a half years ago I got it for only like $80 after rebate. I suspect it is even cheaper now. My only major gripe is that it isn't modular - But the quality of modular PSU's is usually less then wired when comparing the same brand.
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Werelds
Special Little Man
Posts: 15098
Location: 0100111001001100
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| Posted: Wed, 1st Dec 2010 09:07 Post subject: |
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| Mchart wrote: | | 2 cards is easy. Ran 2 Gen1 GTX260's for over a year on mine no problem, and 2 8800GT's before that. |
Enter TC with his obsession for the GTX 480/580, which consume about 133% more power than the 8800 GT, and still about 33% more than the 260. And that's based on their TDP, not even real load numbers, which are higher. 8800GT = 105W, 260 = 180W, 480 = 250W, 580 = 244W - hardly comparable 
| Mchart wrote: | | The Corsair 750w really is a good PSU. (Basically a re-badged Seasonic, and Seasonic makes the best in the business.) |
Nope. Yours definitely isn't a Seasonic build, that's a CWT build. Only 3-4 months ago they released a V2 of the TX-750 which is a Seasonic build, and the current AX-750 is also Seasonic. TX-750 and HX-750 are both CWT builds. Nothing wrong with CWT, and they're very good units, but they're not Seasonic 
| Mchart wrote: | | But the quality of modular PSU's is usually less then wired when comparing the same brand. |
Again not true, them being modular has nothing to do with it. The original TX-650 is _identical_ to its modular brother the HX-650. Why? Because both are the exact same Seasonic build, with only the cabling altered. A PSU being modular changes nothing in its quality, it's just that it's often an entirely different build. I've said this before in several threads, including my hardware thread, but Corsair doesn't have half as many Seasonic units as everyone thinks, most of it is CWT. You can't even say that entire series come from one or the other, as they mix them there as well (HX-650 = Seasonic, rest of the HX series are CWT).
@ timechange: your TX-750 will be fine for SLI, with tri-SLI you want the 580 and not the 480. The 480 in triple SLI is going to be stretching that unit, 580 should be fine as that'll end up substantially lower. tri-SLI is useless though, it scales terribly and is a waste of money, I'd stick with 2 cards..but then again, this is you we're talking about 
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| Posted: Wed, 1st Dec 2010 14:12 Post subject: |
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With overclocking and watercooling, 750W might be not enough for 2 x SLI - true.
I would try it nevertheless. A good thing to have is a device that measures your power consumption. Have the efficiency of your PSU in mind, when you measure!
Pretty usefull:
http://extreme.outervision.com/PSUEngine
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Werelds
Special Little Man
Posts: 15098
Location: 0100111001001100
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| Posted: Wed, 1st Dec 2010 14:29 Post subject: |
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no sparks, no smoke. Just a bs or shutdown of psu.
lol - we talk abou quality components - not some cheap crap.
and why spend another 150+$ if 750W work just fine. test it, you can still buy a bigger psu if it`s not working stable.
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Slizza
Posts: 2345
Location: Bulgaria
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| Posted: Thu, 2nd Dec 2010 19:14 Post subject: |
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Keep the PSU you have mate.
It's more than enough.
Why would you even think about tri SLI?
How many screens do you need?
Corsair 750D :: 750W DPS-G:: Asus x370 PRO :: R7 1800X ::16gb DDR4 :: GTX 1070::525gb SSD::Coolermaster 240MM AIO::
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| Posted: Tue, 7th Dec 2010 09:02 Post subject: |
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| Slizza wrote: | Keep the PSU you have mate.
It's more than enough.
Why would you even think about tri SLI?
How many screens do you need? |
GTX 480s are hella cheap now. I just purchased a hydro copper one for like $370 which is a bargain considering the water block itself costs ~$100. Il hold off on 3xSLI for now but Im definitely planning on 2xSLI with 480s sometime beginning of next year. Just wanna make sure my PSU can handle the load
ASUS Maximus XII Formula | Core i9 10900k @ 5.2Ghz | 32GB G.Skill DDR4 4200Mhz | EVGA RTX 3080 Ti FTW3 Ultra Hydro Copper | ASUS ROG PG35VQ |
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Werelds
Special Little Man
Posts: 15098
Location: 0100111001001100
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| Posted: Tue, 7th Dec 2010 09:06 Post subject: |
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For SLI it'll be fine. Tri-SLI is utterly pointless as it scales like shit. Neither NVIDIA nor AMD have even got normal SLI/CFX working ideally, let alone tri- or quad-configs 
You'd better have 3 monitors ready as well, otherwise 2x480 is utterly pointless
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| Posted: Tue, 7th Dec 2010 09:16 Post subject: |
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| pwerelds wrote: | For SLI it'll be fine. Tri-SLI is utterly pointless as it scales like shit. Neither NVIDIA nor AMD have even got normal SLI/CFX working ideally, let alone tri- or quad-configs
You'd better have 3 monitors ready as well, otherwise 2x480 is utterly pointless |
Im using a single 120hz 1680x1050 monitor but Im anal about having ~100fps-120+fps. Yes my eyes can see the difference and yes it looks much smoother than 60
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Slizza
Posts: 2345
Location: Bulgaria
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| Posted: Fri, 10th Dec 2010 22:32 Post subject: |
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Pushing too far for SLI GTX480 cards i think.
I wouldn't try it on a 750w corsair for long.
Grab a 1kw unit, though a HX850w or the like will do it just.
Corsair 750D :: 750W DPS-G:: Asus x370 PRO :: R7 1800X ::16gb DDR4 :: GTX 1070::525gb SSD::Coolermaster 240MM AIO::
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Werelds
Special Little Man
Posts: 15098
Location: 0100111001001100
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Slizza
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Location: Bulgaria
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