Technical advice!

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Eggar
Posts: 27
Joined: Fri May 28, 2010 6:40 pm

havensole wrote:Finding a psu with 4x 8pin connectors might be hard. If you are in the US here are some to look at:
http://www.newegg.com/Product/ProductLi ... rchInDesc=

The big thing to look at is the amps on the +12v rail which might be your problem. If your system is trying to pull too many amps the psu could shut itself down in order to protect itself. Typically people will say to try and find a psu with a single +12v rail as it is kind of difficult to figure out which plug has which +12v rail on it when you have a psu with more then one. I would imagine if you are using a psu with at least 2 8-pin plugs built on that using the adapters for any other ones you need would be fine. You will probably want something with 55-80 amps across the +12v rails and 700-1000 watts depending on your system specs and what cards you plan on putting in it. 2x gtx480's will probably demand something more like 900-1200 watts. Radiance can confirm this as he has multiple gtx480's.

Very Informative! I appreciate your knowledge in this area havensole. Get's me on the right Track. I'm sure I'm near the same area with the 2 GTX 260 Maxcore's I'm running. The PSU was the last part I collected for my machine rather in a hurry. A local vendor had this one and I will go back and check the specs on it. But I believe it was rather on the cheap, and I shoulda' known better.

Once again
THANK YOU!
MSI NF980-G65 AM3 NVIDIA nForce 980a AMD Motherboard
2x BFG GeForce GTX 260 OC MAXCORE 896MB GDDR3
OCZ 60GB Solid State Drive
8GB DDR3 1600 (PC3 12800)
KINGWIN Mach 1 ABT-1000MA1S 1000W Power Supply
Cooler Master HAF 932 Full Tower
All Running on XP64
Eggar
Posts: 27
Joined: Fri May 28, 2010 6:40 pm

oops! did I say cheap?

Maybe too cheap!

http://www.geeks.com/details.asp?invtid=ESTAR680XBK

If I'm reading the specs correctly, I'm sure what you described is pretty much what's at fault. I will have to rectify that in a hurry. Won't be tasking it too hard til then, I guess.

Thank you again
MSI NF980-G65 AM3 NVIDIA nForce 980a AMD Motherboard
2x BFG GeForce GTX 260 OC MAXCORE 896MB GDDR3
OCZ 60GB Solid State Drive
8GB DDR3 1600 (PC3 12800)
KINGWIN Mach 1 ABT-1000MA1S 1000W Power Supply
Cooler Master HAF 932 Full Tower
All Running on XP64
Eggar
Posts: 27
Joined: Fri May 28, 2010 6:40 pm

I Think I'll give This a Try!

Hope I'm not shooting myself in the foot again, but it
has great reviews and is a supplimentary dedicated GPU power
Drive Bay PSU - Different....
MSI NF980-G65 AM3 NVIDIA nForce 980a AMD Motherboard
2x BFG GeForce GTX 260 OC MAXCORE 896MB GDDR3
OCZ 60GB Solid State Drive
8GB DDR3 1600 (PC3 12800)
KINGWIN Mach 1 ABT-1000MA1S 1000W Power Supply
Cooler Master HAF 932 Full Tower
All Running on XP64
Eggar
Posts: 27
Joined: Fri May 28, 2010 6:40 pm

Eggar wrote:I Think I'll give This a Try!

Hope I'm not shooting myself in the foot again, but it
has great reviews and is a supplimentary dedicated GPU power
Drive Bay PSU - Different....

wow! oop!

http://www.newegg.com/Product/Product.a ... 6817104054
MSI NF980-G65 AM3 NVIDIA nForce 980a AMD Motherboard
2x BFG GeForce GTX 260 OC MAXCORE 896MB GDDR3
OCZ 60GB Solid State Drive
8GB DDR3 1600 (PC3 12800)
KINGWIN Mach 1 ABT-1000MA1S 1000W Power Supply
Cooler Master HAF 932 Full Tower
All Running on XP64
Eggar
Posts: 27
Joined: Fri May 28, 2010 6:40 pm

aww, hell

might as well do it right this time!
need a psu with longer connectors anyways
why even attempt to go partway again!

http://www.newegg.com/Product/Product.a ... 6817121037

DOne!

(4 posts in a row, my new record!)
MSI NF980-G65 AM3 NVIDIA nForce 980a AMD Motherboard
2x BFG GeForce GTX 260 OC MAXCORE 896MB GDDR3
OCZ 60GB Solid State Drive
8GB DDR3 1600 (PC3 12800)
KINGWIN Mach 1 ABT-1000MA1S 1000W Power Supply
Cooler Master HAF 932 Full Tower
All Running on XP64
GeoPappas
Licensed Customer
Posts: 429
Joined: Fri Mar 26, 2010 5:31 pm

havensole wrote:2x gtx480's will probably demand something more like 900-1200 watts.
Everytime I see an estimate for video card power requirements, they seem to go higher and higher :lol:
Pretty soon, people will be saying that you need your own power plant in the backyard :lol:

According to NVIDIA, a GTX 480 requires a maximum of 250W. So two cards would require 500W. You would then need to add in the CPU, memory, HDDs, etc to calculate total power requirements.

See here for more info:
http://www.nvidia.com/object/product_ge ... 80_us.html

FYI: The GTX 470 requires 215W.
http://www.nvidia.com/object/product_ge ... 70_us.html
User avatar
radiance
Posts: 7633
Joined: Wed Oct 21, 2009 2:33 pm

GeoPappas wrote:
havensole wrote:2x gtx480's will probably demand something more like 900-1200 watts.
Everytime I see an estimate for video card power requirements, they seem to go higher and higher :lol:
Pretty soon, people will be saying that you need your own power plant in the backyard :lol:

According to NVIDIA, a GTX 480 requires a maximum of 250W. So two cards would require 500W. You would then need to add in the CPU, memory, HDDs, etc to calculate total power requirements.

See here for more info:
http://www.nvidia.com/object/product_ge ... 80_us.html

FYI: The GTX 470 requires 215W.
http://www.nvidia.com/object/product_ge ... 70_us.html
850 watts is enough for i9 and 2x GTX480, we've ran them for days here, no issues.

Radiance
Win 7 x64 & ubuntu | 2x GTX480 | Quad 2.66GHz | 8GB
Florinmocanu
Licensed Customer
Posts: 101
Joined: Wed Jun 02, 2010 11:49 am

in full load a GTX 480 consumes around 300 W, probably in a high end game like crysis or when rendering it goes down to around 250-270W. 2 x 270W + 100-110 for a high-end CPU + 100W rest of the system = 750W-800W maximum. So a good quality 850W PSU will support such a system without issues.
3930k at 4.4 Ghz, Asus X79, 32GB DDR3. 1 x GTX 980Ti
User avatar
Amplitude
Licensed Customer
Posts: 246
Joined: Sat May 01, 2010 1:10 pm
Location: Bordeaux, France
Contact:

just go for a highend PSU from Seasonic or Corsair (typically in the 850w range) and you can't go wrong with those brands.
Win7 Pro x64 | GTX 770 2GB + GTS250 512Mb | Intel Xeon i7 4x 3.4ghz | 16 GB ECC Mem | Intel SSD 520 | Dell 27"
SOFTIMAGE l 2011 + OCTANE V1.20
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