How is this 650watt PSU with sli 260gtx?

868 Views 14 Replies 9 Participants Last post by Yukss, Dec 2, 2009

zaa730

Discussion Starter · Dec 2, 2009

I made an impulse buy on an MSI open box 260gtx from the egg a few minutes ago.

I also plan on using an i5 and oc'ing to around 3.8ghz-4.0ghz. Since there's no ht it might save some power. Also I'll be using a single Intel ssd which might save some power.
I have this HIGH QUALITY earth watts psu.

http://www.newegg.com/Product/Produc...%20watts%20650

It seems to have enough amps on the 12v rails. I know this power this "power issue" has been blown out of proportion in the past before.

If someone could give me a good answer I would be grateful + rep.

1.) Would I be good for a second 260 gtx?

2.) This is kind of unrelated but my new mobo is p55. Apparently p55 only supports x8/x8 on the pci-e lanes with SLI. In reality would I notice a performance hit? I know I might with say sli 295gtxs, but in this case I'm thinking I'd be just under the bottleneck.

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aksthem1

· #2 · Dec 2, 2009

Link is broken.

Deegan

· #3 · Dec 2, 2009

page is unavailable. id say you will be fine. maybe cutting it a little close. but fine.

youra6

· #4 · Dec 2, 2009

I think a good 650w PSU is fine for your setup as well

Heres the math:

1 GTX 260 takes 182 watts peak

2 GTX 260 takes 364 watts peak

[email protected] 4.0ghz takes 296 watts load

but i5 uses about 30 less watts.

thats equals to be 620, excluding CD drives, fans and Harddrives

I think to be safe, get a 700 watt or a 750 since you are going to be overclocking it a lot. If you werent I would say a 650 would suffice since a STOCK i5 uses 184 watts at load.

Once you overclock it to around 4.0 ghz the wattage jumps to the high 200's

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#superfly

· #5 · Dec 2, 2009

http://www.newegg.com/Product/Produc...82E16817371015
if this is the one you were talking about.
then yeah, should be just fine.

Reactions: 1

zaa730

Discussion Starter · #6 · Dec 2, 2009

Quote:

Originally Posted by #superfly

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http://www.newegg.com/Product/Produc...82E16817371015
if this is the one you were talking about.
then yeah, should be just fine.

Yup, that's the one. Thanks guys.

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Reactions: 1

youra6

· #7 · Dec 2, 2009

Good luck with your new PSU, i do hope you get yourself at least a 700 since you will be heavily overclocking that i5

take a look at this one:

http://www.newegg.com/Product/Produc...-025-_-Product

Same price for a 750 watt and its the same brand PSU. But with mail and rebate though

zaa730

Discussion Starter · #8 · Dec 2, 2009

I already have this psu sitting at home from my old comp.

tha d0ctor

· #9 · Dec 2, 2009

i7 takes nearly 300w full load? that doesn't seem right hwmonitor says like 150w..??

edit: hwmonitor must be wrong this beast sucks power - even idling
glad I got the 1250w PSU

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youra6

· #10 · Dec 2, 2009

Quote:

Originally Posted by tha d0ctor

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i7 takes nearly 300w full load? that doesn't seem right hwmonitor says like 150w..??

edit: hwmonitor must be wrong this beast sucks power - even idling
glad I got the 1250w PSU

you beat me by 50 watts. Thats it, im getting a 1500w PSU!

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franz

· #11 · Dec 2, 2009

I tested my gaming rig awhile ago with a wall meter. The system has an OC'd E8600, 4gb RAM, 2 260s, 3 HDDs, and 6 scythe s-flex's.

At the wall the meter peaked at 500w while the system was folding on both GPUs. That is typically a higher load than you will see while gaming, but obviously lower than any i7 runs.

At idle the rig was running between 245-255watts.

1. You should be fine with your PSU.

2. The lower 8x/8x shouldnt hurt you with this setup either. Enjoy the new GPU!

D3FiN3 SiN

· #12 · Dec 2, 2009

Quote:

Originally Posted by youra6

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you beat me by 50 watts. Thats it, im getting a 1500w PSU!

2 kilowatts or you are a baby!

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franz

· #13 · Dec 2, 2009

Quote:

Originally Posted by firestormcomputers

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2 kilowatts or you are a baby!

I was checking those out the other day. The only problem is that it requires 2 plugs, so you need 2 different outlets in 2 different zones of the house. That way you dont blow a fuse.

I didnt feel like buying a long extension cord, so I just settled with a quality Corsair 750W unit.

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youra6

· #14 · Dec 2, 2009

oh this thing?

yeah i already have 3 or 4 of those already

I also live in a powerplant

http://legitreviews.com/article/436/1/

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Yukss

· #15 · Dec 2, 2009

i think you should me def fine.. look this is my psu: antec true porwer trio 550w

output
[email protected],[email protected],[email protected],[email protected],[email protected],- [email protected],[email protected]

http://www.newegg.com/Product/Produc...-002-_-Product

and this is my rig and can handle all this..

YouTube- THERMALTAKE SWORDM second video

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