Will the PSU be too weak?

[Xyrophlex]

So I bought a Dell Inspiron a year and a half ago, and I am now considering adding a graphics card due to it's low integrated graphics performance. Based on what I have heard, the AMD HD7750 is the best bet without upgrading the PSU. I would just like to confirm this with you guys to make sure that what I plan to do will work.
My current specs:
300W Dell PSU
4GB RAM
Intel i3 3120
No GPU
1TB Hard Drive

I wish to add the HD7750, change the RAM to 8GB and possibly upgrade to an intel i5 3570k in the near future. For now though, I'm just doing the Graphics Card.
Would the PSU have enough power to run the computer?
Thanks

 

[mickypheonix]

Hi Xyprophlex ,
Yes the psu will be too weak
With what you are planning i would suggest a psu of no less than 450watts

 

[rolli59]

The HD7750 will run on a 300watt PSU but so will the GTX750 which is better.

 

[jay2577]

The PSU should be fine with that CPU and the extra ram but i would upgrade it if your planning on buying an i5 3570k.
I would also check first if the Dell inspiron will support that CPU. At the very least buying an unlocked CPU for overclocking is probably not a good idea as the Dell computers are terrible when it comes to overclocking features.

 

[mickypheonix]

the gtx750 is the better card , you are correct you can run on 300w but i would not recommend this, it leaves you less than 100w of headroom

 

[rolli59]

100watt of headroom is fine on a rig that will not overclock (Dell BIOS) and even with an I5 it is fine since it is only a 77watt CPU.

 

[mickypheonix]

ok was unaware you cannot overclock dell bios