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CaptNKILL
10-14-09, 04:10 AM
NewEgg has a deal on these right now:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139008

Its a Corsair 400CX with 30A on a single 12v rail.

You can get that PSU with an XFX 4870 1Gb for $184 with free shipping. I'm putting a gaming system together for someone and I'm trying to spend as little as possible while getting something that will be reliable and at least in the 4870\GTX260 range of speed.

The next closest option is the same video card with an OCZ 500W which has dual 12v rails with 18A each, but the combo is $10 more and there is $10 shipping with that PSU, so it comes out to $205.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817341016

In addition to the 4870, the rest of the system will consist of a single hard drive, DVD burner, Gigabyte G41 board and an E6750 dual core moderately overclocked (3Ghz most likely).

I know Corsair PSUs are some of the best for the money... but will this unit be able to handle running a system like this for a while without popping? It'll most likely be running WoW most of the time with The Witcher, Left 4 Dead and other games thrown in here and there. It won't be doing anything really crazy like folding or benchmarking.

I wouldn't mind spending $20 more than the Corsair combo for something that will definitely make a difference, but I'm not sure the OCZ is worth it since its a dual 12v. People are saying that both units will run systems more power hungry than this, but I'm looking at long term reliability, not "It turned on, i installed windows and then posted this review so its LEET."

mullet
10-14-09, 09:55 AM
I think you have a solid choice there. For the money it's hard to beat the 4870 1GB card. Why don't you buy the video card and give him yours?

PC Power & Cooling Silencer PPCS370X 370W = $39.99 (http://www.newegg.com/Product/Product.aspx?Item=N82E16817703018)

CaptNKILL
10-14-09, 02:31 PM
Heh, no way. I like my 260.

You think the 400W Corsair will be enough to power the 4870 and an overclocked Core 2 Duo?

bob saget
10-14-09, 02:36 PM
Heh, no way. I like my 260.

You think the 400W Corsair will be enough to power the 4870 and an overclocked Core 2 Duo?

If there is only one hard drive and not many fans, I think it should handle. I love my corsair power supply. Upon bootup there is very very slight coil whine, but it goes away fast and the power supply has been rock solid.

mullet
10-15-09, 01:01 AM
Heh, no way. I like my 260.

You think the 400W Corsair will be enough to power the 4870 and an overclocked Core 2 Duo?


System Type: 1 physical CPU
Motherboard: High End - Desktop
CPU: Intel Core 2 Duo E6750 2660 MHz Conroe
Overclocked: 3000 MHz, 1.30 V
CPU Utilization (TDP): 85% TDP

RAM: 2 Sticks DDR2 SDRAM
Video Card: ATI Radeon HD 4870
Video Type: Single Card

Regular SATA: 1 HDD

DVD-RW/DVD+RW Drive: 1 Drive

Fans
Regular: 4 Fans 120mm;

Keyboard and mouse: Yes

System Load: 90 %


Recommended Wattage: 281 Watts

CaptNKILL
10-15-09, 01:51 AM
Eh... I've never trusted that calculator much.

According to that, no one needs anything more than a 500W, including overclocked quad core SLI systems. I find that really hard to believe. The overall wattage is also not a very good thing to go by.

Still, I think that PSU would probably work.

mullet
10-15-09, 09:03 AM
Me 2.

Redeemed
10-16-09, 01:18 AM
I had a 420w Enermax with dual 18a rails(29a combined). It powered an old power hungry X2 4800+ w/8800GTS 640, 1 SATA HD, 1 DVD burner, 1 NIC card just fine. The only reason I'm not using it is because when my GTS died they sent me a GTX that I felt more comfortable using with a more powerful PSU than the 420...but it worked great for the GTS.

So if you know how much power that s939 4800+ and GTS 640 used, you have an idea what the 400w 30a can do considering the lower wattages of the newer CPU's.

Lower wattage? The i7s and PhenomII X4s are both rated for 140w TDP. I believe the old X2s were right about the same if I recall- maybe a bit less actually as they traditionally ran cool- much cooler than their P4 counter parts, consuming much less juice as well.

As to the 640MB GTS... I might be off, as I'm just going off of memory here, but I believe it consumes less than the GTX260 does... not 100% positive here though.

Over all, you're older system wasn't heavily spec'd, and with a good PSU @ 400watts I'd believe you'd be fine. That said, it's possible you were running that PSU near it's peak output capacity rather frequently. Which isn't good, either.

I had a 550watt PSU that got blown when I tried to run my dual 640MB 8800GTS's. :lol: It was a cheaper brand, can't even think of the name- but it blew. :lol: And that was with a s754 2800, 1 hard drive, 4 fans, and an optical drive. Really, it doesn't just depend on the wattage, or the amps per rail- but also the build quality.

Redeemed
10-17-09, 03:02 AM
I must have been thinking about C2D's then, being 100w and less, but your point of them being more or less equal is good then. As for the card he mentioned a 4870/260, so using my old system he has a good idea now if you're correct about their respective power consumtions.

It might be pushing it to the limit but I feel I had some room to work with. The Corsair 400w(80%+) is also much more efficient then my old Enermax 420w(70-75% only), that will be the deciding factor.

Keep in mind that 80% number only holds true the closer you get to peak output. It's not a continuous 80% across the board.

I high quality PSU will stand better when running near or at peak output than a lower quality one, of course. But this still does not make it a good idea. Remember, when a PSU goes there is greater risk of other components being damaged- motherboard, RAM, PSU, hard drive(s), optical drives, video cards, etc. Again, the better the build quality of the PSU, the less likely any damage would occur- but not a risk I'd personally be willing to take.

CaptNKILL
10-17-09, 03:07 AM
The Corsair 400w(80%+) is also much more efficient then my old Enermax 420w(70-75% only), that will be the deciding factor.

The efficiency has to do with power consumption from the wall, not power output to the components.

For example, when a PSU is running 80% efficient its drawing an extra 20% of power from the wall which is being wasted (usually on heat). A PSU running at 70% efficiency will be wasting an extra 30% of power from the wall.

http://www.extremeoverclocking.com/articles/guides/Power_Supply_Guide_11.html

Since PSUs are rated based on their output rather than their power draw, a 400W 80+ unit isn't necessarily going to power more components than a 70% efficient 400W unit. It will just run cooler and draw less power from the wall when the system is under equal load.

Still, 80+ PSUs are generally better quality than others so the other aspects of the unit will probably make it better than a less efficient model.

CaptNKILL
10-29-09, 12:28 PM
Well the PSU works beautifully guys.

I played the Crysis and Batman demos on the system with the E6750 at 3Ghz. The 4870 really is a fantastic card too. It plowed through Crysis with no problems. DX9, everything set to High at 1920x1080. It wasn't buttery smooth but it was very playable the whole time. The full version of the game probably works a little better too since the demo was released before the game.

I also ran OCCT tests for a couple hours with no issues.

And if I ever get another PSU I think it may be a Corsair. For a 400W unit this thing is extremely heavy. It just feels so solid. If it didn't work so well I'd suspect that they added weights to it. :p

mullet
10-29-09, 04:42 PM
Cool beans dude, now that his system is faster then yours. LOL

CaptNKILL
10-29-09, 05:05 PM
Cool beans dude, now that his system is faster then yours. LOL

Except for the CPU. :bleh:

And I can do Physx!

:lol:

I'm holding out on a GPU upgrade till Fermi. :thumbsup:

bob saget
10-29-09, 05:31 PM
When is Fermi (I am guessing Fermi is the 3series nVidia cards) coming?

CaptNKILL
10-29-09, 06:14 PM
When is Fermi (I am guessing Fermi is the 3series nVidia cards) coming?

No one knows for sure. Could be a month, could be three months.

crainger
10-30-09, 09:08 AM
October 21 2015.

CaptNKILL
10-30-09, 09:52 AM
October 21 2015.

Werld endz in 2012 dawg. QUIT MAKING **** UP!

crainger
10-31-09, 12:28 AM
Great Scott.