Upgrading to GTX 750 ti

[Tresiqus]

System:

MB: MSI 785G-E53
CPU: AMD Anthalon II x4 630
GPU: Diamond 5830
PSU: 550W BFG ATX 12V 2.2 (2x 12V rails with 18A each)
Ram: OCZ gold 2x 2gb
My rig also has 6x 12V 0.4A fans, 3x 12V 0.55A HDDs, and a low end sony dvd read/writer.


I'm looking to upgrade my HD 5830 to one (possibly 2 in SLI?) GTX 750 ti. I know the requirements for one 750 ti are 400W with 20A on the 12V rail, will my PSU hold out if I upgrade to 2 in SLI? Will my PSU even be able to handle 1 750 ti?

 

[Mattyice47]

I would say go with 600 to 750 watts just to be safe.

 

[Yingda Wang]

No.750ti uses like.....75w?
Ur more than fine
I ran my 750ti off a 350w psu

 

[wurkfur]

Your 5830 pulls 175 watts. A single 750 ti pulls 60 watts. However, it would be silly to purchase a pair of $160 cards when a sub $300 card could/and will kick it's butt. An example would be an AMD R7 270x that can be found for under $200 and you could add an additional card later on if you upgrade the PSU and if your board is crossfire compatible. It pulls about the same power as your current card.

Also, crossfire and SLI doesn't work well with every game. Stick to a single GPU when you can.

If the GPU pulls too much power, you can easily underclock it a little until you have a chance to upgrade the PSU, but I don't believe it will be an issue.

 

[JackNaylorPE]

Ummmmm.... the 750 Ti does not support SLI .... click on the 760 and you will see SLI listed in the side bar on left .... nbot for the 750 Ti tho
http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-750-ti

Guru3D performs power consumption tests and makes recommendations for both single and multiple card configurations .... none for SLI you'll notice. nVidia reports a 60 watt power consumption but in Guru3Ds test they reported 92 watts.

http://www.guru3d.com/articles_pages/nvidia_geforce_gtx_750_and_750_ti_review,5.html

Measured power consumption GTX 750 Ti card

System in IDLE = 120 W
System Wattage with GPU in FULL Stress = 202W
Difference (GPU load) = 82W
Add average IDLE wattage ~10W
Subjective obtained GPU power consumption = ~92 Watts

Here is Guru3D's power supply recommendation:

GeForce GTX 750 - On your average system the card requires you to have a 450 Watt power supply unit.
GeForce GTX 750 Ti - On your average system the card requires you to have a 450 Watt power supply unit.

If you are going to overclock GPU or processor, then we do recommend you purchase something with a bit more stamina.

So no need for anything over 500 watts, tho prices don't change much below 650 and PSUs do hit peak efficiency at 50% load.

 

[JUICEhunter]

650ti boost is the least expensive card that supports SLI and should have the same price point as 750ti with similar single card performance so you could SLI 650ti boost but most people if they have all the money to spend at once choose a 770 because there is always that potential for another 770 later.

 

[Tresiqus]

Your 5830 pulls 175 watts. A single 750 ti pulls 60 watts. However, it would be silly to purchase a pair of $160 cards when a sub $300 card could/and will kick it's butt. An example would be an AMD R7 270x that can be found for under $200 and you could add an additional card later on if you upgrade the PSU and if your board is crossfire compatible. It pulls about the same power as your current card.

Also, crossfire and SLI doesn't work well with every game. Stick to a single GPU when you can.

If the GPU pulls too much power, you can easily underclock it a little until you have a chance to upgrade the PSU, but I don't believe it will be an issue.

Great suggestion, but what is the amperage requirement on the +12V rail, I keep reading that I should have at least 35A. but the 5830 just required a total of 35A - 40A between the two 6-pin connections, 2 X 18 = 36. Is it the same for this card or would i need a PSU with more amperage on the +12V rail?

 

[Tresiqus]

I want to thank everyone who had suggestions for me, wurkfur inspired me to google more effectivly and I found this list that might be helpful to anyone questioning the wattage or amperage of their PSU. I know MSI is pretty reputable, but if anyone can validate its accuracy it might help out others like me who are a bit confused.

http://forum-en.msi.com/faq/article/printer/power-requirements-for-graphics-cards