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Is my PSU good enough for 7950 + 550ti Hybrid?


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5 replies to this topic

#1 ZashieYo

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Posted 27 March 2014 - 06:20 PM

Okay a bit ago i bought a Corsair CX750W PSU, and then (you may remember me as the person that had a GTX 590 that, yep is dead) and a new Radeon HD 7950, now obviously the 590/7950 was to replace my 550ti which was getting choked up on a few games i play. However one thing that the 7950 has over the 590 is much much better stability and temperatures, even feels more powerful, but however you cant really get full out physx i believe with the card, so after a little search i found you can put in a nvidia card to use as dedicated PhysX, which seeing as i feel really horrible :( for my 550ti i wonder while a computer is gonna get built it can be in, i could use it as a Dedicated PhysX card for my PhysX games.

 

but im worried my 750W PSU isn't good enough for the 7950 (Sapphire Vapor X edition) and 550ti which would suck.

 

btw as always

 

 

system

 

CPU: Intel Core i7 3770K

RAM: 24GB DDR3 1333 (took out 8GB from last time so i can put it in the Eventual build the 550ti will be housed in)

HDD: 1TB Seagate Barracuda

Motherboard: GIGABYTE Z68 AP-D3

OS: Windows 7 Ultimate

Graphics: As above

 

No overclock.


Edited by ZashieYo, 27 March 2014 - 06:22 PM.


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#2 killerx525

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Posted 27 March 2014 - 07:12 PM

Hello again Zashie, according to TechpowerUp, the absolute maximum power consumption of the 550TI is 142W but since it will be used as a dedicated PhysX card, it should be much lower. What you can do to be sure is to a purchase wattage meter to measure the amount of power that is currently drawn when under load and see how much power is left. But from my estimate, the current setup you should approximately draw around the 400ish wattage mark when under full load which is unrealistic.  


>Michael 
System1: CPU- Intel Core i7-5820K @ 4.4GHz, CPU Cooler- Noctua NH-D14, RAM- G.Skill Ripjaws 16GB Kit(4Gx4) DDR3 2133MHz, SSD/HDD- Samsung 850 EVO 250GB/Western Digital Caviar Black 1TB/Seagate Barracuada 3TB, GPU- 2x EVGA GTX980 Superclocked @1360/MHz1900MHz, Motherboard- Asus X99 Deluxe, Case- Custom Mac G5, PSU- EVGA P2-1000W, Soundcard- Realtek High Definition Audio, OS- Windows 10 Pro 64-Bit
Games: APB: Reloaded, Hours played: 3100+  System2: Late 2011 Macbook Pro 15inch   OFw63FY.png


#3 ZashieYo

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Posted 27 March 2014 - 08:20 PM

Hello again Zashie, according to TechpowerUp, the absolute maximum power consumption of the 550TI is 142W but since it will be used as a dedicated PhysX card, it should be much lower. What you can do to be sure is to a purchase wattage meter to measure the amount of power that is currently drawn when under load and see how much power is left. But from my estimate, the current setup you should approximately draw around the 400ish wattage mark when under full load which is unrealistic.  

What's a good roof of power to have?

 

aka, amount of W left? like if i was using 600w i'd have 150w, is it good?.



#4 killerx525

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Posted 27 March 2014 - 11:35 PM

You would want to have about 100W to 200W spare as going near the limit of the power supply isnt exactly the best idea.

>Michael 
System1: CPU- Intel Core i7-5820K @ 4.4GHz, CPU Cooler- Noctua NH-D14, RAM- G.Skill Ripjaws 16GB Kit(4Gx4) DDR3 2133MHz, SSD/HDD- Samsung 850 EVO 250GB/Western Digital Caviar Black 1TB/Seagate Barracuada 3TB, GPU- 2x EVGA GTX980 Superclocked @1360/MHz1900MHz, Motherboard- Asus X99 Deluxe, Case- Custom Mac G5, PSU- EVGA P2-1000W, Soundcard- Realtek High Definition Audio, OS- Windows 10 Pro 64-Bit
Games: APB: Reloaded, Hours played: 3100+  System2: Late 2011 Macbook Pro 15inch   OFw63FY.png


#5 Ezzah

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Posted 28 March 2014 - 04:29 AM

The advertisement numbers on PSUs are only at "maximum" peak performance. The PSU will not maintain 750 watts of power, if your system required 750, the PSU could possibly provide that for a short amount of time, but it will steadily only provide around 600 watts or so.

 

I would also suggest edging away from Corsair's CX series, they're the budget line PSUs, and have been known to cause issues.


mYIGVc5.png


#6 waldojim42

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Posted 05 April 2014 - 08:31 AM

EDIT: Removed post.


Edited by waldojim42, 05 April 2014 - 08:33 AM.

Laptop: Alienware 14 : Intel i7 4700mq : 8GB ram : Nvidia GTX 765 : 256GB Plextor M3 : 1080P IPS display

Test rig: AMD Phenom X4 955 @ 4.0Ghz : MSI 970A-G46 : 8GB Ram : 128GB Plextor M5s : 2x AMD 5770's (Flashed to 6770) : PC Power and Cooling Silencer 750 : Pioneer BR

Hackintosh : Gigabyte GA-H61m : Intel Celeron @ 3Ghz : 8GB ram : EVGA GTX 550Ti : Patriot Torx 2 64GB : Silverstone Strider ES-50 : OSX Mavericks

 





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