Aug 15, 2012
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Is it safe to upgrade my GPU from a 8800GT to a GTX 550 Ti? My system specs are these: 400w PSU, 8800GT, Quad core AMD Phenom @ 2.3GHz each, 8GB RAM, MCP61PM-GM motherboard, X-Fi Titanium Sound card. Which part of my PC will bottleneck the GTX if I can even support it? Will the 400w PSU just barely be enough to power everything?
 
No worries :) I just wanted you to clarify.

There is no limitation to PSU wattage for your system. However, you may want to consider a few things -

1) Price of some higher wattage PSU's

2) The efficiency of the PSU's as most PSU's perform best when they are at 50%-60% load.

Also, a PSU will only deliver as much power as your computer needs, so if you get a 900w PSU, it won't be pumping out 900w of electricity into your components :)
 
Aug 15, 2012
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Ok thank you :) Im on a 250$ budget. what PSU would be a nice upgrade from my current to support a GTX 550 Ti as well as probable motherboard/CPU upgrade in the future?
 
Aug 15, 2012
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I was looking at power consumption of the 8800GT and GTX 550 Ti and the GTX actually consumes around 30 more Watts then 8800GT I believe. If it tries to pull more power from the PSU then the PSU can actually supply, will it damage the GTX or severely bottleneck it?
 
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i rephrased that, i looked at the gtx first.

the gt is105 watts and the 550ti tops out at 110 watts, so 5 watts more. the psu will most likely not have a problem.

but you do not need anything like 900 watts. a 500 to 550 is enough for any single card.
 

kau1997

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May 31, 2012
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Hey man,
You REALLy need a new PSU, and even though your system probably doesnt need this kinda power, its always better to get a stronger PSU.
Ideally, I'd recommend a Seasonic PSU , but even Corsair is great, and this seems brilliant for price. Seasonic is basically OEM Corsair
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139028
And a 550ti isnt really money/performance, an HD6770 comes close to it, if youre ready to shell out maybe 30-40$ more, you can get a BEAST, namely, the HD6870.
Again, i wouldnt really recommend last generation cards, but man this ones a BEAST.
If you dont want to get this, another VERY viable option is the HD7770( http://www.newegg.com/Product/Product.aspx?Item=N82E16814102948 ), same price as 550ti. Plus the TDP of a 550ti is 116W, while that of a 7770 is 80W. And i think, you JUST MAY be able to pull this card off with your PSU, but DEFINITELY upgrade in the future.
http://www.anandtech.com/bench/Product/536?vs=541
You can also see the HD6870 vs 550ti
http://www.anandtech.com/bench/Product/540?vs=541
And 7770 vs 6870
http://www.anandtech.com/bench/Product/540?vs=536
So my final recommendation - the PSU and HD6870 , i REALLY think thats a great investment.
7770 is also nice, but just see the comparison between the 7770 and 6870, and a small gap of ONLY 40$ (or so).
Youre anyways gonna need a PSU upgrade soon, if you want a stable system.
Last thing i want toa ddress- the bottleneck? Well, i guess it might be the slightly low powered CPU, but if you think youre up to it, you can get a cooler, and overclock.
http://www.newegg.com/Product/Product.aspx?Item=N82E16835103065
This is cheap and from what ive read, BRILLIANT.
 
Aug 15, 2012
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Thank you. I checked here http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-550ti/specifications and the minimum PSU is 400W. Looks like i came close to not being able to upgrade. After GPU, new PSU then mainboard/CPU.
 
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i am looking at one of the PSUs that are used for your model is it this one?
http://support.gateway.com/s/POWER/6506042R/6506042Rsp2.shtml

+12V and +12V2 combined current cannot exceed 30 A.

that will give 15 amps for your system and 15 amps for the pci power . .to keep it under 70% load that leave 120 watts for your system and 120 watts for a graphics card on the 12 volt rail. the 550 ti squeaks under that.
 


Intel Core i3 2120 - http://www.newegg.com/Product/Product.aspx?Item=N82E16819115077

ASRock H61M Motherboard - http://www.newegg.com/Product/Product.aspx?Item=N82E16813157315

G.Skill Ripjaws 1333Mhz DDR3 RAM - http://www.newegg.com/Product/Product.aspx?Item=N82E16820231311

Corsair CX430V2 - http://www.newegg.com/Product/Product.aspx?Item=N82E16817139026

The total of these components comes to $251. Don't know if you meant a $250 budget including the GPU, but if it wasn't, then this is what I would go for.

 
Aug 15, 2012
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Wow. Thanks for showing me that GPU. Seeing how its more powerful and requires less power really is getting on my good side.
 

kau1997

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May 31, 2012
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Well, haha, anytime bro.
I myself spent WEEKS trying to find an upgrade for my GT 520, and i went form an HD 6770 to a 550ti to a 560 and finally settled for a 7850 ($250, performance close to a GTX570). And the TDP of the 7850 is like 130W, but NEVER goes over 106W, according to benchmarks. I'd still recommend the 6870, but even 7770 will be AWESOME.
 
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Honestly its difficult for me to tell exactly which model the PSU is. & just to think I was cleaning the dust out of the PSU fan a week ago.
 
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ok, i'll tell ya what kau1997 has a really good thought process going on.

to suggest a few PSUs here is one that will give you a lot of options for a gpu upgrade and cpu/motherboard upgrade later:
CORSAIR Builder Series CX500 V2 $59.99
$49.99 after $10.00 rebate
$1.99 Shipping
this one would be a great upgrade and will allow you to not worry in getting any single card and cpu/motherboard
XFX ATX 550 Power Supply - P1550SXXB9 $59.99
now since i believe you said something about $250 we just spent $60 so that $190 left.
you could get a 7770 but to really maximize the upgrade and have it worth carrying over to an upgraded platform a 6870 is ok:
SAPPHIRE Radeon HD 6870 $169.99
$159.99 after $10.00 rebate $4.99 Shipping

so thats $237 up front.

i'd like to ask what were you upgrading your motherboard and cpu to and when?
 

kau1997

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May 31, 2012
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haha xD thanks. Yes, i REALLY recommend the 6870.
As for the PSU, is XFX a trusted brand? Becasue ive heard AMAZING things about the GS 600, and i cant find teh Corsair 600GUK on newegg( http://www.flipkart.com/corsair-cmpsu-600guk-600-watts-psu/p/itmd5xz5uarqvh9q?pid=PSUD5XZ4XXXNCZGA&ref=9f4dd447-9f7a-4cbb-ada2-91e8048af0c8 ) , but its amazing as well
If youre ready to shell out, heres a BRILLIANT bronze certified PSU which will cover most single card future upgrades as well as the ability to add another 6870 in CF.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151096
a bit pricey, but wrth it, a GREAT CPu to upgrade to is the i5-2500K and for mobos, im not that good, but this seems nice
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131707R
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115072
 
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Oh i wont be upgrading those for another year or so.
 
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ok. if it was a short time i was thinking of suggesting a higher end card and dealing with the limitation your cpu caused.