Solved Will this PSU be enough power for the HD5870? Tags: Power Supplies Power Thermaltake Components Last response: November 9, 2009 6:41 PM in Components Share sincreator a b ) Power supply November 6, 2009 2:51:01 PM My PSU is the 750w thermaltake toughpower. It says 18a per 12v rail. It has 4, 12v rails. It says 60a combined loading max. I have the 5870 on order. Recommended amps per rail is 20a.(40a total, since it uses two rails). So what does this all mean? Is 18a per rail enough, or will it use more since I will be using only 2, 12v rails. Here is the specs for this PSU: http://www.thermaltake.com/product_info.aspx?PARENT_CID... Can someone that actually has some true knowledge on PSU's please answer. Not people that are just assuming please. More about : psu power hd5870 TheViper a b ) Power supply November 6, 2009 3:24:13 PM That's more than enough power for the HD 5870. You have 60 amps on the 12v rails and the HD 5870 requires less than 1/3rd of that. Actually, you've got enough to go Crossfire if you wanted. m 0 l Best solution JohnnyLucky a c 248 ) Power supply November 6, 2009 8:33:24 PM Here are the official power requirements for the brand new ATI Radeon HD 5850 and HD 5870 video cards. ATI Radeon™ HD5850 System Requirements: PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard 500 Watt or greater power supply with two 75W 6-pin PCI Express® power connectors recommended 600 Watt and four 6-pin connectors for ATI CrossFireX™ technology in dual mode ATI Radeon™ HD5870 System Requirements: PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard 500 Watt or greater power supply with two 75W 6-pin PCI Express® power connectors recommended 600 Watt and four 6-pin connectors for ATI CrossFireX™ technology in dual mode The power supply recommendations are for an entire pc system. Figure about 40 amps on the 12 volt rail(s) for two cards operating in Crossfire mode Share Related resources Is a Channel Well Technolgy (CWT) CI power 450w psu enough for gtx 750 ti? - Forum PSU (620W) enough to power GTX 760 SLI? - Forum PSU enough power? - Forum Is this 500W PSU enough power to feed these components? - Forum My psu power will be enough? - Forum Can't find your answer ? Ask ! Get the answer redkachina November 7, 2009 12:00:55 AM Its more than enough - I use my 425w enermax PSU with Phenom II 720 along with a GTX 275-which has higher idle/load power consumption than a ATI HD 5870! m 0 l sparky13 November 7, 2009 2:01:39 PM You are good to go w/that PSU my friend. Enjoy that new GPU! m 0 l sincreator a b ) Power supply November 9, 2009 6:41:15 PM Got the 5870, and all is good. Thanks guys. m 0 l Can't find your answer ? Ask ! Publish Related resources Solved280 watt psu provide enough power? Forum SolvedWill a Corsair 650W PSU be enough to power these components? Forum Solvedis this psu power enough for my build Forum SolvedWill 500W PSU be enough to power my PC rig? Forum SolvedDoes this PSU have enough power for my GPU? Forum SolvedIf i get another GTX 770 for SLI will my PSU have enough power to power it? Forum SolvedWill this psu be enough to power my new build? Forum Solved730 watt PSU enough to power GTX 780. Forum Solveddell XPS 410 stock PSU not providing enough power, need upgrade Forum SolvedEnough power? - Corsair 500W PSU [...] Forum Solved550 Watt PSU enough to power Powercolor R9 290? Forum SolvedIs a G7 power extreme 780w psu enough to power my gtx 590? Forum SolvedIs a 750w psu enough to power a gtx 780 and amd fx9370? Forum Solvedwill my PSU have enough power Forum Solvedwill my PSU provide enough power? Forum More resources Read discussions in other Components categories Power supplies Sound cards NICs Akasa Antec Cooler Master Cougar DeepCool Enermax !