If you only need a 6 pin to run the HD2900XT...

[swtethan]

Then will the factory OC'ed models REQUIRE a 8 pin?

 

[MagnusTheBrewer]

I think you may have misread the review, the HD2900XT requires both.

 

[Extelleron]

Originally posted by: MagnusTheBrewer
I think you may have misread the review, the HD2900XT requires both.

The HD 2900XT requires 2x6-pin to function.

If you want to overclock, the HD 2900XT requires 1x 6-pin and 1x 8-pin.

So yes, a factory overclocked card will likely require an 8-pin connector.

 

[Matt2]

I dunno. Good question.

I'm still considering buying one of the HD2900XT just because of price, but I dont think my Silverstone 560w 36a PSU is going to handle this baby.

A GTX would probably run fine on this PSU making the GTX even cheaper than the HD2900XT when u factor in a new PSU.

 

[MadBoris]

Two 6 pins work with no overclocking.

The ATI driver/software makes sure the 8 pin is there for overclocking. So I would say yes, 8 pin will be needed.

I do have the thought that one review was able to bypass the 8 pin requirement by using a 3rd party overclocking tool, but that might be lack of sleep talking from last night.

 

[Extelleron]

Originally posted by: MadBoris
Two 6 pins work with no overclocking.

The ATI driver/software makes sure the 8 pin is there for overclocking. So I would say yes, 8 pin will be needed.

I do have the thought that one review was able to bypass the 8 pin requirement by using a 3rd party overclocking tool, but that might be lack of sleep talking from last night.

You might be able to do that, but that doesn't stop the fact that if you overclock significantly you will use more power than PCI-E 1.0 + 2x 6-pin can provide (225W).

 

[MadBoris]

Originally posted by: Extelleron

Originally posted by: MadBoris
Two 6 pins work with no overclocking.

The ATI driver/software makes sure the 8 pin is there for overclocking. So I would say yes, 8 pin will be needed.

I do have the thought that one review was able to bypass the 8 pin requirement by using a 3rd party overclocking tool, but that might be lack of sleep talking from last night.

You might be able to do that, but that doesn't stop the fact that if you overclock significantly you will use more power than PCI-E 1.0 + 2x 6-pin can provide (225W).

Yeah a risky proposition I guess, afterall that is ATI's reasoning.
Considering all this, i would have to say factory overclocked cards will have to require an 8 pin to have the cushion up to 300w to maintain stability.

 

[MagnusTheBrewer]

"You need to plug in two 6-pin power cables to run this video card. If however you want to overclock, you will need to plug in one 8-pin and one 6-pin power cable."

Your right! Seems I misread the review.

 

[apoppin]

Originally posted by: Matt2
I dunno. Good question.

I'm still considering buying one of the HD2900XT just because of price, but I dont think my Silverstone 560w 36a PSU is going to handle this baby.

A GTX would probably run fine on this PSU making the GTX even cheaper than the HD2900XT when u factor in a new PSU.

get the GTX ... you will hate the HD ... later ... like you complain about your noisy xtx
and unless you have that "extra" 8-pin you are *stuck* at stock speeds

it is *king* ... and likely to "rule" all thru Summer ... except for the Ultra of course ... get an OC'able GTX

 

[Extelleron]

Originally posted by: apoppin

Originally posted by: Matt2
I dunno. Good question.

I'm still considering buying one of the HD2900XT just because of price, but I dont think my Silverstone 560w 36a PSU is going to handle this baby.

A GTX would probably run fine on this PSU making the GTX even cheaper than the HD2900XT when u factor in a new PSU.

get the GTX ... you will hate the HD ... later ... like you complain about your noisy xtx

it is *king*

The HD 2900XT is not as loud as the X1800/X1900. I never had a problem with the X1900's noise under stock, but overclocking it was a PITA because it's simply not possible to run at 100% even playing games. The 8800GTS cooler is tolerable even at 100%.

 

[fern420]

has anyone located a place selling 8 power adapters?

 

[Extelleron]

Originally posted by: fern420
has anyone located a place selling 8 power adapters?

A 6-pin connector plugs into the 8-pin slot on the HD 2900XT. Why do you need an adapter?

 

[fern420]

Originally posted by: Extelleron

Originally posted by: fern420
has anyone located a place selling 8 power adapters?

A 6-pin connector plugs into the 8-pin slot on the HD 2900XT. Why do you need an adapter?

no offense but they put 8 pins on it for a reason. great news if its true but if it is true why didn't ati just put two 6 pin connectors on the card? the andandtech review says you can do that, stick a 6 pin in the 8 pin connector but your still not going to have the proper wattage hence no over clocking ability. if you do not connect an 8 pin into the card you will no be able to over clock.

 

[apoppin]

Originally posted by: Extelleron

Originally posted by: apoppin

Originally posted by: Matt2
I dunno. Good question.

I'm still considering buying one of the HD2900XT just because of price, but I dont think my Silverstone 560w 36a PSU is going to handle this baby.

A GTX would probably run fine on this PSU making the GTX even cheaper than the HD2900XT when u factor in a new PSU.

get the GTX ... you will hate the HD ... later ... like you complain about your noisy xtx

it is *king*

The HD 2900XT is not as loud as the X1800/X1900. I never had a problem with the X1900's noise under stock, but overclocking it was a PITA because it's simply not possible to run at 100% even playing games. The 8800GTS cooler is tolerable even at 100%.

yeah ... but i know matt2

he is a 'no compromise' guy

he would not be happy compromising with a HD2900xt ... for "not that much more" money ... my 'advice' was directed specifically to him

he has a big LCD that needs all the 'oomph' he can muster from his HW ... that "says" GTX

-- to me

i would never get one ... well .. well under $400 ... that is my price range ceiling

 

[Extelleron]

Originally posted by: fern420

Originally posted by: Extelleron

Originally posted by: fern420
has anyone located a place selling 8 power adapters?

A 6-pin connector plugs into the 8-pin slot on the HD 2900XT. Why do you need an adapter?

no offense but they put 8 pins on it for a reason. great news if its true but if it is true why didn't ati just put two 6 pin connectors on the card? the andandtech review says you can do that, stick a 6 pin in the 8 pin connector but your still not going to have the proper wattage hence no over clocking ability. if you do not connect an 8 pin into the card you will no be able to over clock.

Wouldn't an adapter just take up 8-pins and not provide anymore wattage? I thought you needed a true 8-pin connector to actually get the extra wattage, and an adapter would just allow you to connect a 6-pin to 8-pin (which you already can.) Am I wrong?

 

[swtethan]

Originally posted by: Extelleron

Originally posted by: fern420

Originally posted by: Extelleron

Originally posted by: fern420
has anyone located a place selling 8 power adapters?

A 6-pin connector plugs into the 8-pin slot on the HD 2900XT. Why do you need an adapter?

no offense but they put 8 pins on it for a reason. great news if its true but if it is true why didn't ati just put two 6 pin connectors on the card? the andandtech review says you can do that, stick a 6 pin in the 8 pin connector but your still not going to have the proper wattage hence no over clocking ability. if you do not connect an 8 pin into the card you will no be able to over clock.

Wouldn't an adapter just take up 8-pins and not provide anymore wattage? I thought you needed a true 8-pin connector to actually get the extra wattage, and an adapter would just allow you to connect a 6-pin to 8-pin (which you already can.) Am I wrong?

It would think you plugged in a 8 pin, but then in turn your power plug will melt since it will overload, lol.

 

[fern420]

Originally posted by: Extelleron

Originally posted by: fern420

Originally posted by: Extelleron

Originally posted by: fern420
has anyone located a place selling 8 power adapters?

A 6-pin connector plugs into the 8-pin slot on the HD 2900XT. Why do you need an adapter?

no offense but they put 8 pins on it for a reason. great news if its true but if it is true why didn't ati just put two 6 pin connectors on the card? the andandtech review says you can do that, stick a 6 pin in the 8 pin connector but your still not going to have the proper wattage hence no over clocking ability. if you do not connect an 8 pin into the card you will no be able to over clock.

Wouldn't an adapter just take up 8-pins and not provide anymore wattage? I thought you needed a true 8-pin connector to actually get the extra wattage, and an adapter would just allow you to connect a 6-pin to 8-pin (which you already can.) Am I wrong?

i think the adapters actually do increase the wattage by connecting 3 molex into one 8 pin. corsair is giving these away for free to anyone who bought a power supply since december but i cant find anyone selling them. it sucks because i have a 900watt duro power supply and plenty of juice, just no 8 pin pci2 connectors on it and i definitely want to overclock these two 2900's.

 

[Extelleron]

I thought Corsair was sending out actual 8-pin cables, not some kind of adapter you stick on a 6-pin. I contacted Corsair to get one of the 8-pin PCI-E cables for my HX520. I'm not sure if I'll get an HD 2900XT; it really depends on whether or not performance improves much and if the price drops a little bit more. $350-370 and maybe I'll bite if I can get a buyer for my GTS. The reason I'm not so sure about purchasing the 2900 is how much this reeks of another X1800 -> X1900 launch... I'm not buying a 2900 today if I can get a 65nm 2950 in three or four months.

 

[humanure]

maybe this?

 

[v8envy]

Originally posted by: ExtelleronThe reason I'm not so sure about purchasing the 2900 is how much this reeks of another X1800 -> X1900 launch... I'm not buying a 2900 today if I can get a 65nm 2950 in three or four months.

So completely true. I didn't buy an X1800 at launch, I bought it several months later for less than a third of the intro price once the X1900s arrived. This launch looks exactly like 17 months ago. NV had the top dog product for months, ATI was late to the party with a hot, power hungry, noisy product. The one difference was the X1800XT was competing with the 7800GTX, the at the time performance leader and not the 7800GT, but other than that the sense of deja-vu is overwhelming.

Ordered a $65 7600GS for myself from the egg. I can live with 1024x768 no AA until the 65nm refreshes from both parties are out.

 

[fern420]

Originally posted by: humanure
maybe this?

you sir are a life saver.......MANY THANKS!!!!!!!!

thats the ticket right there, for the life of me i couldn't find one.

 

[fern420]

Originally posted by: Extelleron
I thought Corsair was sending out actual 8-pin cables, not some kind of adapter you stick on a 6-pin. I contacted Corsair to get one of the 8-pin PCI-E cables for my HX520. I'm not sure if I'll get an HD 2900XT; it really depends on whether or not performance improves much and if the price drops a little bit more. $350-370 and maybe I'll bite if I can get a buyer for my GTS. The reason I'm not so sure about purchasing the 2900 is how much this reeks of another X1800 -> X1900 launch... I'm not buying a 2900 today if I can get a 65nm 2950 in three or four months.

i do believe your correct after talking to tech support at corsair. i think that humanure has the exact cable we need in his link, hehehe



http://www.axiontech.com/prdt.php?item=...ONSID=4265ea9b345652cd24dde597eda8ded7


the only question i have, see the small 4 pin male p4 connector on the same side with the molex, the input side. what the heck does that p4 plug into to get power, isnt the only 4 pin connection from the power supply the one running to the mobo? heres a better picture, newegg even has them, i cant understand why i didnt see them earlier. i wonder if that p4 connection isnt optional.


http://www.newegg.com/Product/Product.a...2887002&ATT=12-887-002&CMP=OTC-Froogle


its just a bit confusing since under the item details it says:

This adapter converts 2 standard 4-pin Molex coonectors into 1 8-pin P8 connector

but then under the input section for the plug it says:

Input: 2 male MOLEX, 1 male P4

so witch do i believe, the item details or the input listing, they both cant be right and to be perfectly honest this monster 900 watt power supply only has one male P4 connector and its running to the motherboard so have i hit another wall where im also going to need a second adapter to get more than one p4 connection so i can in turn plug that into this pci express2 8 pin adapter? what a fracked up mess, hehehe.



i think i may have figured it out, it looks like on the input side you connect EITHER two 4 pin molex plugs OR one P4 connection, not both.

 

[nullpointerus]

EDIT: nvm, should've looked beyond the first page of the thread