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Old November 13, 2008, 09:57 PM
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Default Is a 600W PSU Enough?

Recently I purchased a Diamond HD4850 512MB (NCIX.com - Buy Diamond Radeon HD 4850 625MHZ 512MB 1.98GHZ GDDR3 PCI-E Dual DVI-I HDCP HDTV Out Video Card - 4850PE3512V In Canada.) and 4GB Mushkin Ascent DDR2-800 4-4-4-12 (NCIX.com - Buy Mushkin Ascent PC2-6400 4GB 2X2GB DDR2-800 CL4-4-4-12 240PIN Dual Channel Memory Kit - 996622 In Canada.)

When I got home and finished installing everything, it worked for a few days on my 450W PSU (I know, I'm kinda pushing it with 450W), but then afterward my computer would start turning off randomly, or restarting, or even going into standby unexpectedly. I swapped out the 4850 for my old 8600GT and lo-and-behold, it worked. The fact remains quite obvious that I need a new PSU.

Now, Because I want more than just enough juice to power my 4850, I was thinking a 600W PSU may be in order, but the manual says that a 750W is minimal! The 4850 has a TDP of ~230W under load, so 750W maybe a bit of overkill. I'm sort of debating between 600W and 750W, because I may want to CF the 4850 down the road a bit.

I'd just like to get some opinions from you guys, since some of you may have had something like this happen to you at one point or another :p
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Old November 13, 2008, 10:45 PM
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My Suggestions:

Welcome to Corsair :: HX Power Supply Product Information Its more expensive, but modular if you prefer that.

Welcome to Corsair :: TX Power Supply Product Information Its cheaper non modular design and a more powerful 12v rail.

Both would be more than enough to run dual 4850s in crossfire its only a matter of choice between a modular or non-modular design.

EE
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Old November 13, 2008, 11:06 PM
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I run a 4850 w/E8400 using a Corsair VX550..plenty of power.

Edit: Ooops...sorry, i missed the X-fire comment. Maybe the 650 would be a better choice.
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Old November 13, 2008, 11:19 PM
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Quote:
Originally Posted by ImmaPC View Post
The 4850 has a TDP of ~230W under load, so 750W maybe a bit of overkill.
You're joking, right?



As for new PSU Antec EA650 sorta best-buy, but I see at NCIX some good deal for Corsair TX650/750.
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Old November 14, 2008, 12:33 AM
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imho...best deal out their right now..bang for your buck..PC Power and Cooling Quad Silencer 750W...plenty for both a single or SLI / Crossfire solution!
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Old November 14, 2008, 08:23 AM
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Quote:
Originally Posted by burebista View Post
You're joking, right?



As for new PSU Antec EA650 sorta best-buy, but I see at NCIX some good deal for Corsair TX650/750.
..Woops? I saw it in the graph under the review HWC did, Maybe I misread it :(

Does Modular really matter? Like all it means is that you can plug in or unplug cables depending on whether you need them or not, right?

That PC Power and Cooling Quad SIlencer 750...Is it as much or more than the one of the Corsair's Eagle Eye suggested?
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Old November 14, 2008, 09:48 AM
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I personally use the OCZ Gamers Extreme 700W and they are pretty solid but I'd probably recommend a 750W for what your running and doing.
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Old November 14, 2008, 04:28 PM
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Quote:
Originally Posted by ImmaPC View Post
..Woops? I saw it in the graph under the review HWC did, Maybe I misread it :(

Does Modular really matter? Like all it means is that you can plug in or unplug cables depending on whether you need them or not, right?

That PC Power and Cooling Quad SIlencer 750...Is it as much or more than the one of the Corsair's Eagle Eye suggested?
Usually the HWC graphs are for Total System power draw, not just the GPU...
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Old November 14, 2008, 07:23 PM
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Quote:
Originally Posted by rjbarker View Post
imho...best deal out their right now..bang for your buck..PC Power and Cooling Quad Silencer 750W...plenty for both a single or SLI / Crossfire solution!
Agreed. I use this PSU in my main system. The maximum load I've ever done with it was:

Q9450 Quad-core CPU @ 3.8GHz 1.33v
Asus P5Q-E Mobo
2 x 2GB OCZ Reaper HPC DDR2-1066 @ 1144 2.18v
1 x WD VelociRaptor 300GB HD
4 x WD Caviar SE 500GB HD
2 x 512MB Radeon HD 4850 700/2100 in CrossFire
AuzenTech Prelude X-Fi
DVD Burner
4 USB devices hooked up

The PCP&C Silencer showed no signs of stress. The fan didn't even spin any faster.

Aside from my old OCZ Powerstream 600W PSU, this Silencer is proving to be the best PSU I've ever had.
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Old November 14, 2008, 07:40 PM
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Corsair Tx650, Lov'in it!
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