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Should I upgrade my Power Supply (and a few other questions)

I'm looking to upgrade my CPU to an Intel Core-I5 3350 P and my GPU to a EVGA GeForce GTX 750Ti. I have a few questions.

1. My current PSU does 430W. Should I upgrade, and if so, what to?

2. I've just discovered what bottlenecking is, and will my upgraded CPU bottleneck my upgraded GPU or would it be the other way around? If so, what CPU or GPU should I get?

I have my current specs below so if there are any other problems I might encounter, please tell me. Thank's guys.


Motherboard: Joshua-H61-uATX

CPU: Intel Core i3-3240 Ivy Bridge Dual-Core 3.4GHz LGA 1155 55W Desktop Processor Intel HD Graphics 2500 BX80637i33240

GPU: Nvidia Geforce GT630

Power Supply: Corsair CX Series 430 Watt ATX/EPS Modular 80 PLUS Bronze ATX12V/EPS12V 384 Power Supply CX430M

RAM: 8 GB

OS: Windows 8.1 64 Bit
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  1. Best answer
    1. If you're getting Core-I5 3350 and specifically the 750ti then no, your current PSU is more than enough HOWEVER read 2)
    2. Depending on what resolution you play at, the 750ti might bottleneck the i5. If your resolution is 1920x1080 or greater then the 750ti will not be enough and i suggest you get a gtx 760.

    In case you're going for the gtx 760, depending on age of PSU, the corsair cx430 might not be enough. Theoretically a brand new CX430 should handle your components but not by a safe margin. I'd give it a shot since its a decent enough unit, but if you experience shutdowns during gaming or freezing then change it to a 500w unit from Seasonic, XFX, FSP, Corsair, EVGA ..
  2. yes definitely need better psu atleast 550w.no your system not bottleneck your cpu your good to go.
  3. emdea22 said:
    1. If you're getting Core-I5 3350 and specifically the 750ti then no, your current PSU is more than enough HOWEVER read 2)
    2. Depending on what resolution you play at, the 750ti might bottleneck the i5. If your resolution is 1920x1080 or greater then the 750ti will not be enough and i suggest you get a gtx 760.

    In case you're going for the gtx 760, depending on age of PSU, the corsair cx430 might not be enough. Theoretically a brand new CX430 should handle your components but not by a safe margin. I'd give it a shot since its a decent enough unit, but if you experience shutdowns during gaming or freezing then change it to a 500w unit from Seasonic, XFX, FSP, Corsair, EVGA ..


    Thanks for the quick answer. I sadly can't get the GTX 760 as it's way too expensive, but I'm guessing that the 750TI will still do the job as a good GPU.
  4. The 750ti is a great card. If you can't go for the 760 it will do fine and you wont have to change the PSU either
  5. It will not bottleneck each other at all, and great choices might I say. One thing though, I would say get a new power supply if you can. The watts are pretty low and the Corsiar CX line has some pretty bad problems with it. I would say get an XFX or an EVGA PSU. Those are high-quality and cheap. If I helped you mark this as best answer so others know where to look too! :-)
  6. Most all games run partially through the cpu, they have to, the games are written code, but some games are less dependent on the cpu and some more. However, unless you are playing a text based MUD, your game will be majority dependent on the gpu.

    What this all means is if your gpu is stronger than the cpu, the gpu will be slowed 'bottlenecked' as it waits on instructions from the cpu. If the gpu is weaker than the cpu, the gpu is going to run as fast as it can and happy gaming! The 3350p is stronger than the 750ti, this is not a problem, your cpu will only run as fast as the gpu allows.

    The Cx430 is enough to power a 750ti easily, but that's about the best card available currently in that wattage. With a 3350p, you have enough cpu power to move up to a r9-280 in the future if you wish, provided you also upgrade the psu.
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