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PSU for GTX 650 Ti / 650 Ti Boost

post #1 of 9
Thread Starter 
hey guys

I have a mATX machine that I use as a HTPC but also to play couple of games, especially emulators like Dolphin. since I either have it hooked up to my TV or spare monitor, its pretty much always running @ 1920x1080 res.

currently running an old 9800 GT 1GB green card in there which is a nice little card, but there are some downsides. for one, the HDMI port doesn't support audio, that was introduced later in the Nvidia series. not a huge pain as I just use an RCA connection to the onboard audio, but I would prefer HDMI audio.

also the 9800 GT is well and truly dated. no DX11.

so the point of this, I'm considering upgrading to a nice mid range card that doesn't break records but can hold its own.

the catch - I only have the included Gigabyte 420w PSU that came with my tower. it has a 12v rail, but 420w is less than what Nvidia lists as the min. requirement for one of the cards im looking at. I REALLY don't want to upgrade the PSU if I can help it, to the point where I am honestly willing to sacrifice getting a better card vs paying even more to upgrade the PSU as well.

the system is simply 8GB DDR3 RAM, MSI mATX board, i5 3470 CPU (running stock with stock cooler), 1x 60GB SSD and 1X WD 1Tb green HDD. that's it. also running a wireless USB dongle for a Logitech wireless mouse/keyboard device, and I usually have a USB HDD plugged in for movies.

so I was wanting to get the 650 Ti Boost, but it requires 450w PSU. will my 420w be enough but? otherwise there is the 650 Ti which only requires 400w, I should still be fine with only 420w then too yeah?

the final alternative, is to get a Radeon HD7750 since it doesn't even require a PCI-E 6-pin to power it, or maybe a slightly stronger ATI card. personally I much prefer Nvidia but am open to suggestions.
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post #2 of 9
need @shilka here
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post #3 of 9
though if you probs need @ 450 watts max

a good one though with high efficiency
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post #4 of 9
Thread Starter 
sorry mate, I don't understand what you mean haha. are you saying I will need a better PSU? and what/who is Shilka?
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post #5 of 9
Quote:
Originally Posted by gtarmanrob View Post

sorry mate, I don't understand what you mean haha. are you saying I will need a better PSU? and what/who is Shilka?

i dont think you need a new PSU if you are just using it for HTPC


Shilka is the PSU genius probably good to have a chat with him about these things
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post #6 of 9
I'm running a i7 2600k and 2 7970's on a 650w. I'm sure you can fit a little gtx 650ti on a 420. You could probably fit a 7970 on it with all honesty.

Edit: i7 2600k @ 1.475 v
7970 @ 1.17 v
7970@ 1.25v

Still going strong.
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post #7 of 9
Thread Starter 
Quote:
Originally Posted by Spectre- View Post

i dont think you need a new PSU if you are just using it for HTPC


Shilka is the PSU genius probably good to have a chat with him about these things

haha arite cheers mate. will try track him down.
Quote:
Originally Posted by Shiftstealth View Post

I'm running a i7 2600k and 2 7970's on a 650w. I'm sure you can fit a little gtx 650ti on a 420. You could probably fit a 7970 on it with all honesty.

Edit: i7 2600k @ 1.475 v
7970 @ 1.17 v
7970@ 1.25v

Still going strong.
[

yeah right...that seems promising then. I mean honestly you'd think I would be fine, the 650 Ti is only meant to draw 110w, and the 650 Ti boost only 134w according to Nvidia. and since the system is pretty bare, I would have thought it would be enough.

but it pays to ask the geniuses we have floating around OCN thumb.gif personal experience > any spec sheet
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post #8 of 9
Quote:
Originally Posted by gtarmanrob View Post

haha arite cheers mate. will try track him down.
[

yeah right...that seems promising then. I mean honestly you'd think I would be fine, the 650 Ti is only meant to draw 110w, and the 650 Ti boost only 134w according to Nvidia. and since the system is pretty bare, I would have thought it would be enough.

but it pays to ask the geniuses we have floating around OCN thumb.gif personal experience > any spec sheet

relatively my GTX 660's only pulled like 135-140 watts even though nvidia claims they use 170 watts

i think they just want you to have extra headroom on the psu for safe reasons
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post #9 of 9
Thread Starter 
Quote:
Originally Posted by Spectre- View Post

relatively my GTX 660's only pulled like 135-140 watts even though nvidia claims they use 170 watts

i think they just want you to have extra headroom on the psu for safe reasons

yeah fair enough. look cheers for the help ay, I think I should be safe.
Dr. Gonzo
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Dr. Gonzo
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