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300 watt PCIE graphics card for an old computer. (was thinking about HD 7750)

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July 28, 2013 7:09:19 PM

I need a 300 watt PCIE graphics card for a old computer ( I was thinking about the HD 7750) Any suggestions?

Specs:
OS: Windows XP
System model: Dimension E521
Processor: AMD Athlon 64 x2 Dual Core Processor 4000+
RAM: 4 GB
PSU: 305 watts

I am only going to be playing low end games like Minecraft and Cod 4.
July 28, 2013 7:21:27 PM

Justinkea said:
I need a 300 watt PCIE graphics card for a old computer ( I was thinking about the HD 7750) Any suggestions?

Specs:
OS: Windows XP
System model: Dimension E521
Processor: AMD Athlon 64 x2 Dual Core Processor 4000+
RAM: 4 GB
PSU: 305 watts

I am only going to be playing low end games like Minecraft and Cod 4.


I think the minimum for that card is 400W. You might run into some trouble.

Upgrade your PSU while you're at it. :) 
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a b U Graphics card
July 28, 2013 7:27:43 PM

You will be fine. The Max TDP for the HD 7750 is 55W. You do NOT need a 400W PSU. nVidia/AMD always list on the conservative end to try to be safe. Your max power draw of your whole system will easily fall under 200W, which is definitely less than the 80% of max rated power threshold I would go to (especially for a cheap OEM PSU).

The 7750 sounds perfect for your system to and I don't think you will see a big bottleneck either.

As your system is old in general, I wouldn't really recommend upgrading your PSU unless you plan on building your own in the future and using the new PSU in that system.
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a b U Graphics card
July 28, 2013 7:38:37 PM

The HD7750 does not use 300W. Many of them lack PCIe power connectors which indicates they use less than 75W - the maximum PCIe cards are allowed to draw directly from the motherboard.

Unless your 305W is a (dying) piece of crap, it should work.

The manufacturers' 400W "requirement" is mainly just because of the large number of sub-par quality PSUs in the wild.
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July 28, 2013 8:08:30 PM

I found one just now that can work with my 300 watt power supply (Not taking risk with 400 watt) But thanks for replying :)  I am gonna get the GT 430
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