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Will 650W be enough for my 460 SLI?

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Old 10-25-10, 03:30 PM Thread Starter   #1
tyl998
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Will 650W be enough for my 460 SLI?


After getting a lot of good answers from the other thread and doing some more research myself, I've decided to upgrade from my GTX280.

I just ordered two of these cards: http://www.newegg.com/Product/Produc...82E16814125333 and now I'm worried that my PSU might not be able to handle it.

I'm building a new system from scratch, and I will be putting everything together minus the 460s tonight. In their place I will be using a single GTX280 until the new cards arrive.

So, I've got some questions:
1) Does have two cards increase the Tessellation capabilities of the setup?
2) Can the 460 handle DX11 well?
3) Is Tessellation and DX11 important? It's part of the reason I upgraded from my GTX280.
4) Will my 650 Watt antec PSU be enough?
5) I plan on overclocking my CPU, but I've never done any OCing before. Do I need some special software? What is this CPU-Z and GPU-Z I keep hearing about?

The rest of my rig:
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Old 10-25-10, 03:44 PM   #2
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1. Yes. but not 2x its dependent on scaling.
2. Yes, the 460 is a DX11 card.
3. Yes, if you play DX11 games which include tesselation (BFBC2 is one I can think of)
4. It should be fine.
5. You need to read the link in my sig (i7 overclocking guide). You can google CPUz/GPUz, but they are just programs that show some needed statistics such as clock and bus speeds, voltages, memory speed and stock speeds, etc.

I still would have went with the 470, especially considering the price drops lately ($250 for one of those now). I know 460 1gb in SLI beats them but... I dont like SLI/Crossfire b/c if I pay 2x, I want 2x performance all the time, not 1% of the time. Scaling on average is around 70% or so.

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Old 10-25-10, 03:50 PM Thread Starter   #3
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I'm sure the 480 is sweet, but the best price I've seen so far is about $500. That's about a 42% increase in price over my SLI combo...
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Old 10-25-10, 03:50 PM   #4
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Sorry, ninja edited on you... 470.

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Old 10-25-10, 07:18 PM Thread Starter   #5
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Out of curiosity...what about compared to a 480? Is 460 SLI > 480?

It's certainly less expensive...
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Old 10-25-10, 10:04 PM   #6
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i hope you didnt pay 440 for the 2 cards. THese 2 were on sale for 320 total, after the rebate (see cyber deals)

i7 will to to ~3.6 without even touching the voltages.

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Old 10-26-10, 01:40 AM   #7
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The GTX460 SLI setup generally outperforms the GTX480:

http://www.tomshardware.com/reviews/...80,2694-9.html

But power usage is slightly increased over one GTX480 (only slightly, more performance per watt with the SLI setup)

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Old 10-26-10, 10:43 AM Thread Starter   #8
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Quote:
Originally Posted by ravaneli View Post
i hope you didnt pay 440 for the 2 cards. THese 2 were on sale for 320 total, after the rebate (see cyber deals)

i7 will to to ~3.6 without even touching the voltages.
I was the one who put up that cyberdeal

Badbonji:How much do the 460s use? 160 watts each?
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Old 10-26-10, 10:51 AM   #9
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Yes, 160W each. Vs 480 that is 250.

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Old 10-26-10, 03:29 PM   #10
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Power consumption for the 1GB models in SLI
http://www.hexus.net/content/item.php?item=25498&page=9

Overall it isn't much more than the GTX480, the increase in performance is more than the power increase %-wise.

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Old 10-27-10, 11:04 AM Thread Starter   #11
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Thanks Earthdog, Badbonji!

Earthdog, the link in your thread is the updated version of the original guide right? The author is not you right?
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Old 10-27-10, 11:11 AM   #12
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My link, goes to here, which now that article is not hosted here. I did not write it, that was MIAHALLEN.

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Old 11-27-10, 11:45 PM   #13
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Building New System - 1st in a long, long time.


New to the site and would like to ask whether you folks think I have enough power supply in this new system I'm putting together, my first since about 1995:

Asus P6T Deluxe V2 MoBo
Antec 1200 case
Antec 1000w psu
i7 950 CPU
12 GB RAM
120 GB SSD (1)
1T HD (2)
MSi N460GTX Hawk 1 GB GDDR5 Graphics Cards - SLI'd (2)

Reason I'm asking is the MSi box recommends 450W for just 1 video card. I sure appreciate any feedback I can get.
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Old 11-27-10, 11:49 PM   #14
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Sorry; should have also mentioned that each of the 460 GTX's seems to require 4 molex connectors, which has me wondering about cabling issues.
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Old 11-28-10, 02:15 PM   #15
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Well you get converters and most PSU's have 4 molex connectors.
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Old 11-28-10, 02:45 PM   #16
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Thanks for replying. Each of the converter cables does three, that gives me a possibility of six, but the two video cards together are needing a total of eight molex terminations. Any ideas on whether the 1000w will be enough?
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Old 11-29-10, 08:44 AM   #17
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Quote:
Originally Posted by EarthDog View Post
3. Yes, if you play DX11 games which include tesselation (BFBC2 is one I can think of)
BFBC2 has tesselation??? That's new...

Quote:
Originally Posted by cmipilot View Post
Thanks for replying. Each of the converter cables does three, that gives me a possibility of six, but the two video cards together are needing a total of eight molex terminations. Any ideas on whether the 1000w will be enough?
Get a PCI power splitter. Turns one 6-pin power connector into two.

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Old 11-29-10, 08:47 AM   #18
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All along you should have been thinking buying a new PS and getting 460 SLI and using dedicated 280 for physX(or sell the 280 to someone with a dual 280 system so they can go TRISLI and buy a third 460 with the money). Three card setup = You won't be sorry.

I'm running 3 GTX 280's on my Corsair 1000HX. It's a good power supply in my opinion but I'm sure there are better ones. If I can run this you can run 2 460's and a 280.

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Old 11-29-10, 12:25 PM   #19
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Quote:
Originally Posted by amnios View Post
All along you should have been thinking buying a new PS and getting 460 SLI and using dedicated 280 for physX(or sell the 280 to someone with a dual 280 system so they can go TRISLI and buy a third 460 with the money). Three card setup = You won't be sorry.

I'm running 3 GTX 280's on my Corsair 1000HX. It's a good power supply in my opinion but I'm sure there are better ones. If I can run this you can run 2 460's and a 280.
You can't go tri-sli with 460s.

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Old 11-29-10, 05:57 PM Thread Starter   #20
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Quote:
Originally Posted by Darknecron View Post
You can't go tri-sli with 460s.
You can't use 2 in regular SLI mode and a third just for PhysX?

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