How much power for 8800

[monolithx]

Hi. I'm planning to buy a Conroe system with 8800GTX. Single.

I would take 2x1GB Corsair 1066 RAM, Conroe 6600 and 8800GTX. I have SoundBlaster X-Fi and 4 hard drives 7200 S-ATA/P-ATA + 1 DVD Recorder.

ATM I have 480W Thermaltake PSU. Will it be enough for the new system?

 

[mustardman24]

It might be, but it'll be cutting it by alot, especially if you plan on using many fans, add on cards, etc. I reccomend at least 600w, try this calculator yourself to figure out your exact needs:
http://extreme.outervision.com/PSUEngine

 

[Blacken]

Pushing 475w for 2 dimms of ram, a X-Fi and 4 hard drives. 8O
-Good article on GTX real life consumption: http://news.softpedia.com/news/8800GTX-Power-Analysis-40450.shtml

 

[mpjesse]

I believe nVidia is recommending at least 450W, but most of the OEM's are recommending 600W. Either way, it won't hurt to try. If it won't boot or you have stability issues then get a bigger PSU. But there's no sense in buying a new one until you know.

 

[lp231]

If you get yourself a powerful psu, just make sure
your 12v rail supports at least 30amps and more.

The 8800GTX does require a 12v rail at 30amps.

 

[monolithx]

So after all this read, my conclusion is my Thermaltake 480W should be just fine for a new PC. Good, as $166 more is not needed

 

[weskurtz81]

Acually power consumption of the card is between 140-170W as the article suggests, so you wouldn't need 30 amps on the rails. 25-27 amps on the 12v rails would be enough according to just about every indepth power consumption busting article I have read on 8800GTX's.

wes

 

[weskurtz81]

I am talking about full system consumption, being between 25-27 amps(edit), with no OC of course, just stock performance. But, it doesn't hurt the get a little headroom.

wes

 

[Track]

Why do u try? You obviously know nothing abt PSUs..

 

[weskurtz81]

Yeah,

aware of that, my only point is, the same point you and I go back and forth on, and the same point I tell you I agree with you on(buying a little more than you need). But, the point, the power supply calculators over estimate by a large margin. You and I are both aware of this, and I will quit throwing that in here, it's just every time I see anyone post a power supply calculator, I have a hard time not posting.

As you and I hae agreed in the past, it doesn't hurt to buy more power than you need. It could keep you out of trouble, and make things a little easier.... it just those that are buying 800,900,1KW psu's because they are upgrading to a 8800gtx.... drives me insane.... and I am also aware that this is not one of those cases. I still think 25-27 amps would be more than the system would draw under load stock settings.... but, hey, like we have said, it doesn't hurt to go a little higher on the psu...

wes

 

[monolithx]

Hmm well, this is my PC:


ASUS P4C800 i875P Gold
P4 3.0GHz Northwood
2x512MB 2.5-3-3-6 TwinMOS DDR
Gainward GF 6800GT GLH AGP 256MB
4 x S-ATA 320GB Seagate 7210
SoundBlaster Live!
Thermaltake Bigwater SE LQDCS
Pioneer 111D DVD+-RW
Cisco 100Mbps LAN
1x USB Logitech G7 mouse
1x USB Mirosoft kyb
Thermaltake PurePower 480W (peak load 550W) 480APD PSU : [+12V:18A, +3.3V:30A, +5V:40A, -5V:0.3A, -12V:0.8A, +5VSB:2A]

That PSU obviously gives 18A... which is kinda low..

And when looking at product lists, the best I can find is a 580W with 20A per 12V rail... Fortron, Hiper.. all give weak amps for 12V raill.. even 730W versions.. weaker than my 480W/550W peak Thermaltake which gives 18A. Tagan gives 20A (33A combined current but I don't know what that means 12V1 20A 12V2 20A current: 33A ?!

If a label on my Thermaltake is 18A.. that should be combined how much? 30A?

 

[monolithx]

well, I would like (if possible) to keep this psu for my new C2D system: 6600, 2x corsair 1066, 8800gtx (other components the same).

this is a sticker from my psu:



according to other manafacturers, 18A is quite good per 12V rail (if that's it) and should be enough for a new system i think?

 

[monolithx]

so actually even for the current system i need a better one?

atm i have 1 disk turned off because 2 were on the same rail (split) and it crashed often... tomorrow ill buy a standard -> sata power connector and use it for unused molex rail i have and connect a drive there.. should work i hope...

for C2D i obviously need a new psu...

what do you suggest from listed:

FORTRON 650W, EPS, HQ, PFC, 2 x 12V
700 W ATX 2, FORTRON, Epsilon, ATX 2
730 W ATX 2, HIPER 4M730-SU
580 W ATX 2, TAGAN, Super Silent TG580-U22, 2Force
750 W ATX 2, SILVERSTONE, Zeus ST75ZF
PSU Enermax EG465AX-VE(G) SFMA 24pin ATXv1.3
PSU Enermax EG565AX-VE(G) FMA II 24P ATX2.2
PSU Enermax EG701AX-VE(W) SFMA 24P ATX2.2
PSU Enermax EG701AX-VH(W) SFMA 24P ATX2.0
PSU Enermax Liberty ELT500AWT 500W 24p ATX2.2
PSU Xilence Power SPS-XP500, 120mm, ATX2.0
PSU Xilence RedWing SPS-XP480W, 120mm, ATX2.2
PSU Xilence RedWing SPS-XP600W, 120mm, ATX2.2
PSU Zalman ZM600-HP 600W, PFC,120mm, ATX2.2

that is what i can get...
if i buy a new one, well i would like to buy the best of those...

 

[monolithx]

What about
PSU Enermax EG701AX-VE(W) SFMA 24P ATX2.2 1.146,25
PSU Enermax EG701AX-VH(W) SFMA 24P ATX2.0

they are a bit more expensive but if im paying, well... if those are better...

 

[monolithx]

Please take a look here and recommend me a psu that will last for example if I want to upgrade with 2 more hdds, few other small stuff, like 4 ram sticks etc.. and maybe an sli

http://pcborg.org/index.php?option=com_virtuemart&page=shop.browse&category_id=64&Itemid=28

it's not in english, but it doesnt need to be

so.. also i need a motherboard for C2D... 2 months ago i was aiming for P5B, but I've heard there is now better choiche than that...
would either take e6600 or e6300 (dont know yet)

 

[monolithx]

I was sugesting the one that meat your needs at a good price but if your willing to pay for one of those then go for it. The VE is the updated version of the second one you listed. It provides 35A to the combined +12v rails. This one should be able to handle the system with an 8800 and a decent OC.

If I take E6300 I would certainly go for OC.. also I'll be taking maybe Corsair 1066 (I still don' know if it gives any more performance over 667 e.g.)... I'm quite unsure what C2D system to take to be the best option...

the price can varry, and i dont mind if it is $200+/-..

was aiming for: e6600, 2x corsair 1gb 1066, 8800gtx (or gts need advice) ...

 

[monolithx]

I gave up on SLI. Too much money and I don't need that

I was thinking about P5B-E, E6300 @ 3GHz, and still thinking about RAM. Corsair 1066 is not supported on P5B (I read only 533, 667, 800 in specs) and can't find a single board for it.
Maybe it's an overkill anyway so I'll be fine with GEIL 667 maybe or KINGMAX 667?

 

[kaotao]

Why do u try? You obviously know nothing abt PSUs..

You obviously know nothing.

 

[kaotao]

"Track" down his last few posts, and you'll see what I mean. This is NOT someone to ever take seriously. Not everyone knows this.

 

[darkstar782]

This has probably already been said, but while that PSU is a 550W model, its an old model aimed at older PCs where the CPU draws from the +5V rail (hence 40A +5v).

To try to run an 8800GTX on a single 18A rail is a very silly idea. You'd be lucky for it to boot.

18A*12V=216W on the 12V rail.

C2D e6300-e6700 = 65W
8800GTX = AT LEAST 160W

Thats 225W, and I haven't even gone into the other components.

 

[kaotao]

Then you should know better. Don't encourage him. People actually come here for REAL advise.

 

[kaotao]

I understand that, but some people don't. It's hard to correct and move along when that same person does this ALL the time, while flaming the rest that are trying to give actual advise.

 

[monolithx]

I beg a pardon?!
Erm... I don't see how I flame?
I'm moving onto a new platform. Wanted to do so 2 months ago but gave up due Conroe was a fresh platform, now asking questions about what PSU and what platform to actually buy.

Yes, I've probably asked same question a few times, but didn't mean to make it any bad, just want to be absolutely sure where will I put my hard earned money.

I'm sorry if you find this being flame or something. Has nothing to do with it.

 

[monolithx]

Hmm oops, looked like it was me. Sorry then. (P.S. thanks for advice once more.)