need help picking a new case and power supply

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xDarkMagex
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i want to upgrade my pc gettin ready for the new battlefield 3 ^^, i want to do a sli with 2 gts 450 but i dont know what power supply to get and also my case is really old and the airflow on it really suck. i been watching and reading a lot of review but i just still dont understand.... :( so i might as well ask help from the pro ^^

using at the moment
http://www.rocketfishproducts.com/products/computers/RF-550WPS.html
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1384989&Sku=A107-3016

Thank!!!

eire1274
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Well, the first thing to look for is airflow. I'm a HUGE fan of AeroCool, Corsair, and Cooler Master cases, but there are others that will do well, and the Apevia you cited has quite the fan base. Just look for lots of positions to place a fan (front, rear, side, even top and bottom) and if fans aren't supplied, load it up with nice LOW RPM fans (several fans at low RPM will move as much air as one or two high RPM fans, but won't annoy you so much), intake at bottom and front, outtake at rear and top, to keep the interior air from heating up via convection. And make sure your GPUs have exhausting fan systems that blow air out of the system.

Power supplies, well, I haven't heard much on the Rocketfish product, positive or negative, so I guess I'm no help. If I had to chose, it would be a Corsair or OCZ modular.

My current big rig (old rig, yes, I'm out of date) is an AeroCool Masstige BTX case (no longer produced, but it is with out a doubt the best case I have ever owned) with 3 80mm intake fans on the side blowing directly on the CPU, a 120mm intake fan on the front, and a 120mm (LED lit Rosewill, as the stock fan failed a year ago after 3 years of steady service) exhaust at the back. The HIS video card exhausts as well. And I have never had any sort of overheating, despite overclocking, even when my ancient central air unit fails (typically once a year).

Pic was taken on a Kodak Zi8 video camera, and sucks... sorry, only cam in easy reach.

123_0289.jpg

Nick McDermott

xDarkMagex
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O.O ty for the reply umm guess ill try adding some more fan and see how that turn out but i still dont know how much watt i need to get for a sli :( you got any idea?

k1llg0r3
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How much are you looking to spend all together? and what cards
do you plan to put in SLI?

eire1274
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k1llg0r3 wrote:and what cards do you plan to put in SLI?

GTS450, stated in the first post.

xDarkMagex wrote:i still dont know how much watt i need to get for a sli

For SLI "certified" PSUs, meaning ones that nVidia has given the thumbs up to, start at around 500W, but that is really close if you are using multiple drives or overclocking. I do NOT recommend getting into those huge 1000W or 1200W PSUs because of how much power recycling they need to do (power recycling is extra wattage being reconverted through the voltage system in the PSU; too much means lots of heat and short PSU life), but I think you would be comfortable in the 650W to 750W range. It will give you a lot of wiggle room for overclocking or adding hard or optical disk drives without short amping the rig.

The big thing I will tell you is get a PSU with active power factor correction (PFC) as overall you will see more stable voltages across the channels as well as have an overall tougher PSU, as well as adding a power strip with voltage regulation and surge suppression over 3000 joules (rig pictured is on a 5 year old OCZ Modstream with PFC connected to a Belkin "Total Power Protection" unit, and it is still running rock solid current).

If you want the ultimate overclock, I may not be the guy to help you. But if you want an efficient rig (perhaps moderately overclocked) that will last a long time, I'm here to help.

Nick McDermott

xDarkMagex
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O.O my rig
motherboard: evga 750i
cpu: q9650 overclocked 4.05
ram: 4 gb corsair
cooler: corsair h50
harddrive : 500gb samsung

planning on sli 2 gts 450. i dont want to get somethin i dont need above what i need to sli those 2 cards. i went power supply search and omg i did not know they cost so much O.O the one i have now was $20...... i was thinking about getting somethin like 1000watt to be on a safe side cause on the gts 450 box it say 400 watt needed but after what you say i didt know to much watt is a bad thing O.O. so you think i should get a 650w? and thank alot for the reply

xDarkMagex
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Joined: 10/06/2009
Posts: 7

O.O my rig
motherboard: evga 750i
cpu: q9650 overclocked 4.05
ram: 4 gb corsair
cooler: corsair h50
harddrive : 500gb samsung

planning on sli 2 gts 450. i dont want to get somethin i dont need above what i need to sli those 2 cards. i went power supply search and omg i did not know they cost so much O.O the one i have now was $20...... i was thinking about getting somethin like 1000watt to be on a safe side cause on the gts 450 box it say 400 watt needed but after what you say i didt know to much watt is a bad thing O.O. so you think i should get a 650w? and thank alot for the reply

xDarkMagex
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ops double post o.O. i also forgot to add umm how much im plannin on spendin welll... umm i build my rig with the help from ebay.... yup got all my part from ebay lol i guess i want one that work but wont make me go hungry for a few day O.O but if i have to go above $100 it ok to, so if you got a idea of which power supply i should get can you give me link to it or the name of it plz. thank!! and got my rig for umm maybe back in 2008 or 2009 not sure but ebay work

eire1274
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I did research, and 650W to 750W would be perfect. The GTS450 at full load has been accurately measured at 219W, so 400W + 219W = 619W, and remember that the 400W limit also gave a surplus margin of error. 650W is safe, 750W is excellent, 850W is pushing it, and anything over is moving into the too much life area.

Nick McDermott

xDarkMagex
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Joined: 10/06/2009
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O.O ok ty!!!!! guess imma go for a 650w ty for the help ^^