Can My Corsair CX550 PSU Handle a Nvidia GeForce GTX 770?

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the_ultra_code

the_ultra_code

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Apr 6, 2017
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Hello Tom's Hardware members!

I have a quick-question: I am hoping to upgrade my current main PC's GPU from a Nvidia GeForce GTX 760 to a 770. Here are my system specs:

  • ■ Intel Core i5-750 overclocked to 3.5GHz (20x multiplier, 175 BCLK, auto voltages)
    ■ Asus P7H55-M Motherboard
    ■ 8GB G.Skills Sniper DDR3 2133MHz RAM (clocked at 1750MHz)
    ■ Sound Blaster X-Fi soundcard
    ■ Asus Optical SATA drive
    ■ Crucial MX500 500GB SATA3 SSD
    ■ Western Digital Blue 1TB HDD
    ■ SanDisk Plus 128GB SSD
    ■ Corsair CX550 80+ Plus Bronze 550W PSU, and of course
    ■ EVGA Nvidia GeForce GTX 760
Now, some more details. I know that the 770 draws 50W more at full power than the 760. When I ran Furmark at 1024x768 my power consumption (using a Kill-a-Watt power meter) was at least 350W. So, my thought process is is that, if the PSU has to handle 50W more, bringing the system's power consumption to 400W at least, it would still have a 150W buffer of "free" wattage to go on, and given that the PSU ain't a cheap, non-80+ certified PSU not from a very respectable PSU manufacturer, the PSU should be able to tolerate the new GPU, even though Nvidia recommends at least a 600W PSU.

So, am I correct in that process of thought? Someone else with a newer system with a lesser wattage PSU seemed to get along just fine (but then again, his CPU's TDP is 41W less, and I am assuming he was not overclocking) ( http://www.tomshardware.com/answers/id-2942952/nvidia-geforce-gtx-770-780-600-watt-psu.html?xtor=EREC-8889 ). Shouldn't I do just fine? Just want a second opinion.

I plan to snag a 770 for a nice price after GPU prices drop (just for comparison, I got the 760 for around $80; yikes!, especially when I have seen 770's at prices at or below $80). It would be a nice boost, because it is pushing pixels to a 1440p monitor.

Thanks!
 
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the_ultra_code

the_ultra_code

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Apr 6, 2017
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That's good.

Regarding newer GPUs, you're right ashif, but, the question I have to take into account is: Does that GPU have support for Windows XP? The 700's series is the last Nvidia GPU series with driver support for Windows XP 32-bit.

You see, I did not mention that this is a retro/modern gaming PC. It can dual boot Windows 10 (on the Crucial SSD) and Windows XP (on the WD HDD), and both the motherboard and the GPU support both OSes perfectly (it's funny - you could say that the motherboard supports XP better than 10, because Asus stopped driver support for the board with Windows 7, but thankfully, Win10 is so similar to Win7 that Win7 drivers work just fine under Win10) (technically, the system can triple boot, with Linux Mint on the SanDisk SSD, but that is from a broken and now disassembled Core 2 Duo prebuilt, and I only included it in the system for initial tests, so the installation didn't go to waste, and so I could do Linux things natively on the PC).

I like to play my Need for Speed: Hot Pursuit 2 on my 1440p monitor with max details at over 200fps, my Halo with framerates higher than the in-game animations, and my Far Cry buttery smooth with over 60 fps on max details. :)
 
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the_ultra_code

the_ultra_code

Commendable
Apr 6, 2017
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*hyperventilating* WHAT DRagor!?!?!?! I MISLEAD MYSELF! NOOOOOOOOOOOO!!!!!!!!!!

Okay, seriously, on a more positive note, that means I can now look for 900 series cards and get more performance + less power draw. YAY!

I am kinda speechless, though. I spent $80 on the 760, but, then again, I needed a card, and I only "knew" that 700 series cards supported XP, and the current GPU shortage. I kind of hate myself. But hey, at least I have a working 760 with the original box and everything. :)
 
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