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GTX 650 Ti power consumption

Last response: in Graphics & Displays
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October 12, 2012 6:25:02 AM

Hey guys, I'm seriously considering to order GTX 650 Ti graphics card as an upgrade from my current GT 430. My desktop is an HP p6330f and I game at 1680x1050 or less if a games frame rate is not high enough.

Anyway, so my case is not big, I would say it is midsized, but I do not know if a big graphics card would fit in there.
My PSU is a 300w that came with the desktop.

Since my processor i an i3 530 @2.93 Ghz, I've been looking at cards that would max out all current games and are powerful, but I don't want to buy a really powerful card that would be bottlenecked by my CPU.

I also would rather not upgrade my PSU.

A GTX 650 Ti seems perfect for me, and I was also planning on buying ACIII anyway, so the coupon codes are a great bonus.

The question is, can my PSU handle the card? I have asked this before, and have gotten mixed responses. The official Nvidia statement says that it requires a minimum 400w, but looking at multiple benchmarks, the total system peak wattage used is 240w.

Keeping in mind that those review sites use much more powerful hardware, it seems that a 300w psu could in fact handle the GTX 650 Ti. Though 240/300 = 0.8 = 80% total power is cutting it close.

So I ask you people of the forums: Could a 300w PSU really handle a card like the GTX 650 Ti? If not, why so? I am not very knowledgable in this area, and would greatly appreciate the comments of people with greater expertise.
a b U Graphics card
October 12, 2012 6:28:18 AM

Most low-end power supplies like that can't handle high loads well and an older unit could have degraded over time considerably from even that point. I'm not saying that it won't work, but it might cause that PSU to fail within the next few weeks or months even if it does work.

Besides, does your PSU even have a 6-pin PCIe connector?

You'd probably be better off getting a Radeon 7770 and using the money saved compared to the 650 Ti to get a new PSU.
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a c 540 U Graphics card
October 12, 2012 7:21:27 AM

For a system using a single GeForce GTX 650 Ti graphics card NVIDIA specifies a minimum of a 400 Watt or greater power supply that has a combined +12 Volt continuous current rating of 20 Amps or greater and that has at least one 6-pin PCI Express supplementary power connector.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Total Combined Continuous Power/Current Available on the +12V Rail(s) @ 45-50°C ambient temperature, is the most important factor.

The HP Pavilion p6330f 300W OEM power supply, with its combined +12 Volt continuous current rating of 19 Amps and with no PCI Express supplementary power connectors, is insufficient to power your system configuration with a single GeForce GTX 650 Ti.
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October 12, 2012 8:22:27 AM

I suppose that I truly have no choice but to upgrade my PSU.

So what would you guys reccomend? Since I'm upgrading my psu, I might as well buy a more powerful graphics card, namely the HD 7850.

What is the best most affordable PSU that would be compatible with that card?
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a c 540 U Graphics card
October 12, 2012 6:59:40 PM

There are some Radeon HD 7850 graphics cards that require two 6-pin PCI Express supplementary power connectors. If you were to buy one of these cards then you need to make sure that the new power supply unit, that you buy, has at least two PCI-E Supplementary Power Connectors.

The safer choices are the following, since it'll handle any Radeon HD 7850 graphics card.

XFX Core Edition PRO550W (P1-550S-XXB9) 550W ATX12V 2.2 & ESP12V 2.91 SLI Ready CrossFire Ready 80 PLUS BRONZE Certified Active PFC Power Supply for $69.99 ($59.99 after $10.00 rebate)
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
or
http://us.ncix.com/products/?sku=59615&vpn=P1550SXXB9&m...

Antec NEO ECO 520C 520W Continuous Power ATX12V v2.3 / EPS12V 80 PLUS Certified Active PFC Power Supply for $54.99
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

CORSAIR Builder Series CX500 V2 500W ATX12V v2.3 80 PLUS Certified Active PFC Power Supply for $59.99 ($49.99 after $10.00 rebate)
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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a b U Graphics card
October 13, 2012 6:02:00 AM

there is a way that you wont need to upgrade youe psu. just get the hd7750. it does not require a pcie connector and its performance is on par with 5770/6770. and its a card suitable for gaming at 1680*1050 for lower. since that is the resolution you intend to play at i suggest get the 7750 and dont waste extra money on a new psu+ gpu
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October 13, 2012 6:11:51 AM

mohit9206 said:
there is a way that you wont need to upgrade youe psu. just get the hd7750. it does not require a pcie connector and its performance is on par with 5770/6770. and its a card suitable for gaming at 1680*1050 for lower. since that is the resolution you intend to play at i suggest get the 7750 and dont waste extra money on a new psu+ gpu

gtx 650 and 650 ti overkills the 7750 but ofc 7750 is a good gpu and with a crosfire setup will be over the 650 ti that cant go sli....
so if u dont whant to upgrade psu buy the 7750 find a oc model and in future buy a better psu +1 7750 crossfire them and u will have x2 perfomance than the gtx 650..
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October 13, 2012 8:34:43 AM

bergos said:
gtx 650 and 650 ti overkills the 7750 but ofc 7750 is a good gpu and with a crosfire setup will be over the 650 ti that cant go sli....
so if u dont whant to upgrade psu buy the 7750 find a oc model and in future buy a better psu +1 7750 crossfire them and u will have x2 perfomance than the gtx 650..


Well as good as this sounds in theory, overclocking a 7750 would probably put it at 7770 performance and power consumption rates, which my PSU might not handle as well....

Besides, I want better performance than a 7750. An HD 7850 looks much better, and I don't mind spending a 100 dollars more for that kind of frame rate performance. But it looks like if I want to buy any card that's more powerful than a 7750, then I'll have to upgrade my PSU.

k0888 has some good suggestions, but I also have to make sure that it fits in my mid size ATX case well.
My old PSU is of dimensions 5.9 W x 3.4 H x 5.5 D - Inches
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a c 540 U Graphics card
October 13, 2012 6:44:37 PM

thethinice said:
Well as good as this sounds in theory, overclocking a 7750 would probably put it at 7770 performance and power consumption rates, which my PSU might not handle as well....

Besides, I want better performance than a 7750. An HD 7850 looks much better, and I don't mind spending a 100 dollars more for that kind of frame rate performance. But it looks like if I want to buy any card that's more powerful than a 7750, then I'll have to upgrade my PSU.

k0888 has some good suggestions, but I also have to make sure that it fits in my mid size ATX case well.
My old PSU is of dimensions 5.9 W x 3.4 H x 5.5 D - Inches

The XFX Core Edition PRO550W (P1-550S-XXB9) and the CORSAIR Builder Series CX500 V2 500W have exactly the same dimensions as your current OEM power supply unit.

The Antec NEO ECO 520C 520W is only 0.4 inches deeper and should also have an excellent chance of fitting in your Mid-size ATX case.
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March 14, 2013 10:47:39 PM

i installed gtx650 , but when tried to install the driver, it said that my system is not a good match . I have Athlon processor. So i bought Radeaon 7750 and it is very beautiful card. My power supply is 420 watts, I run flight simulator X , and my seetings are all high,except the autogen density, that i put it on normal (midium setting).The card is so cool and i do not hear the fan noise So for older computer system GTX driver will not install, and gives you a message saying that your system does not match. so the best card i could find was Radeon 7750. More than 7750 requires higher PSU , that i decided not to change my PSU .so far happy with radeon 7750
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April 7, 2013 10:46:09 AM

Im running a Gigabyte windforce Nvidia GTX 650ti, i3 3ghz with 4gb ram (not the best but runs most games on ultra easily) and I need 450watt power supply mainly because of the 650ti, the minimum power supply you need for a single 650ti (you cant SLI them) is 420 watts so I suggest for you to get a 450 watt powersupply (you can get more if u want!) so you have some left over just incase you want to overclock or somethin :) .
I am not sure however if a 650ti will fit your system and your motherboard!. In case you are planning on getting a newer motherboard a reeeally cheap one (that i got :p ) is the Gigabyte P75-D3.
Hope this helps!
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April 7, 2013 12:32:52 PM

Thank you for your suggestions. One thing that happened was that I bought a Cyberpower PC , with AMD 4100 and 16 GB ram, for flight simulator. Strange enough that the game froze in the middle. I searched what could be the problem, and noticed that many people had the same complaint. Some one researched ,and found out that because higher power processors yield more frames per second, the buffer zone of the graphic card gets saturated and then freezes. So I returned the cyberpower computer, because it was too strong . I do not know what else besides power supply could be the problem that when the GTX software wanted to install after it auto detected my system, it said that is not compatible with the system.
Amazingly AMD Athlon 64 which is my processor with AMD 7750 works like a charm, and so smooth. AMD 7750 is really a beautiful card.The scenery's of the flight simulator like cities and natural scenery's look very nice, for instance the night view of the cities look in detail and the contrast of colors gives you the feel of being in a real airplane watching from the window below at a city. I did not see this beauty in many graphic cards that I tried ,and had to return them. I tried Gt610 , GT 640, GS 8400, AMD radeon 7770( It is not as beautiful and detailed as AMD 7750). So I went through lots of trials and errors to find out the best combination of graphic card that works with Athlon 64 processor. Due to being not a very fast processor in comparison to the new on the market processors, it does not yield high frames to the graphic card to saturate it , so it does not freeze the game. My system now runs the flight simulator x like a charm .
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