need help with PSU for my Q6600 system

Hi Guys,

I just together my system and then found out that my ENERMAX Whisper II EG465P-VE FMA 1.3 ATX 460W Power Supply does not have a 24 pin power connector :(. Well I need to buy a new power supply.

My current system config is as below...

CPU: Q6600 FSB1066 G0 (SLACR) (planning on OCing to 3.2GHz)
Motherboard: ASUS P5K-E/WIFI-AP (P35 chipset)
RAM: Corsair 2x1GB DDR2 800Mhz
Graphics card: EVGA 640-P2-N821-AR GeForce 8800GTS 640MB
Heatsink: Thermalright Ultima 90
Heatsink Fan: Scythe SFF21F. Fluid bearings, silent, 1600RPM, 63CFM
HDD: WD5000AAKS 500GB, 16MB cache (already have. $130) and 2 SATA 160GB Seagate HDD's.
Optical Drives: one DVDRW and one CDRW
Sound: Audigy2 ZX Platinum

I am planning on buying the below PSU.
OCZ GameXStream OCZ700GXSSLI ATX12V 700W Power Supply

But I have read that 8800GTS requires 26A on the +12. Newegg gives the below specs for it : +3.3@36A,+5V@30A,+12V1@18A,+12V2@18A,+12V3@18A,+ 12V4@18A,-12V@0.8A,+5VSB@3.0A.

Will this work with my current system (I have seem some people use this PSU with 8800GTX)?

Also if you guys have other suggestion please let me know.
8 answers Last reply
More about need q6600 system
  1. Yes it will work with either 8800GTS 640/8800GTX 768
  2. I read a post somewhere saying that the 18A on the +12V gave that person problems since evga 8800GTS 640MB requires 26A on the +12V.

    I also was able to find 20 pin to 24 pin convertors ( Is it safe to use them?

    Also is it better to stick with 700W or 850W?

  3. More W doesnt mean the PSU is better , there other things like AMP, PickLoad time , Efficency ....

    what is the model of 850W ?
  4. OCZ GameXStream OCZ850GXSSLI ATX12V v2.2 and EPS12V 850Watts Power Supply is the one I also was thinking about.
  5. well if u can get it then go for it , (OCZ one )
  6. thanks
  7. glad i could help :)
  8. I have the same question, i have asked this question directly to EVGA, sideways , upside down etc. I have yet to get a straight answer??? Any way, below is just an exerpt to my CONTINUING question ,,, geeeeze

    Charles, I hope I didnt blow your fuse ? LOL ,, I will simply need to know, If I have to buy another PSU, what is the minimum spec I need to look for on the dedicated +12v rail for the PCI-Express wire that will run this card "EVGA 640-P2-N825-AR GeForce 8800GTS 640MB 320-bit GDDR3 PCI Express x16 HDCP Ready SLI Supported Video Card"
    -------------- Original message --------------
    Thank you very much for the reply. That does help knowing it is OVERALL and not necessarily the rail for the PCI-Express ampacity. My current PSU has (3) +12 rails. The main power connector ampacity at max load = 12amps. The rail for the dedicated PCI-Express cable ampacity at max load= 21 amps. I am attaching the PDF specs on my current PSU. I am hoping that this will have suitable ampacity to run this card. Please advise. If it is not suitable, I will need to find out what the PCI-E rail ampacity will need to be. Thank you
    -------------- Original message --------------
    From: "Charles Gooding" <>

    I do apologize for the lateness in a reply to this question, but the specs are referring to an over all amperage rating from the PSU, and not from a single output, we just want to make sure that the system as a whole is able to supply enough amperage for the whole system with that card installed. I hope this answers your question, if not please don’t hesitate and contact us at anytime.
    Sent: Thursday, October 11, 2007 9:18 AM
    To: Joe Darwin; EVGA Sales; EVGA RMA; EVGA Tech
    Subject: fw: in need of info b4 purchase [ME-071011-586951]
    I do not know how to approach this to get a response, perhaps one of you gentleman can direct this to the proper channel to get a response? thanks

    -------------- Forwarded Message: --------------

    Subject: FW: In need of info b4 purchase
    Date: Tue, 09 Oct 2007 16:10:39 +0000
    Ok ,,, who do I need to send this to to get a response?

    -------------- Forwarded Message: --------------

    Subject: FW: In need of info b4 purchase
    Date: Wed, 03 Oct 2007 12:55:35 +0000
    I was wondering how long it might take to get a response from this previously asked question, thanks

    -------------- Forwarded Message: --------------

    Subject: In need of info b4 purchase
    Date: Sun, 30 Sep 2007 19:54:40 +0000
    I wish to purchase the following “EVGA NVIDIA GeForce 8800 GTS 640MB 16X PCI Express W/ TV-OUT & 2x DVI” The question I have pertains to the required power. From what I have been able to obtain, I found the following information
    “(Minimum recommended power supply with +12 Volt current rating of 26 Amps.)”
    Unfortunately, this statement has been left up to interpretation in the forums. What I want to know is, is that statement referring to the total ampacity from a dedicated PCI-Express cable out of my power supply to the video card, or is the recommended ampacity from the main power supply to the motherboard?
    I have the following power supply already that has a 13 amp capacity for the 24 pin power connector, and a 21 amp capacity for a 6 pin PCI-Express connector. And if that doesn’t meet the need, I was considering adding on this
    graphics card power supply, but its PCI-Express ampacity is only “Load: 21A (Peak Load: 25A) Min. Load 0A”
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