HD2900 is this right???

[ashmanuk67]

I have just got today my HD2900 yummy, When i went to install this card computer would not boot.

I had one pci-e power cable conected to the gfx card, Do you need to have both power cords conected??

Thanks in advance for your help.

 

[Last Kronin]

From what i understand, you need to have at least 2 6 pin pcie cables but if you want to oc from the CCC you need the 6 pin pcie and the 8 pin pcie, think 1 is for the card and the other for the cooler, but not sure.

 

[helmutcheese]

I think so but only need 2x 6pins to run it but must have 2x 8pins to overclock (unhides overdrive setting in driver, think thats name), but there is a little mod for peeps with PSU's that only have 6pin PCI-E Plugs.

Above user got in as I was typing this.

 

[IceShock]

You need 1x 6pin Pci-Express addaptor, And 1x 6+2 (8pin) DX10 Pci-Express addaptor should you wish to use Ati Overdrive (overclocking) in Ati Catalyst Control Centre.

Or

You can use 2x 6pin Pci-Express addaptors and the card will run exactly the same but no Ati Overdrive in the Catalyst Control Centre.
But overclocking works fine with 2x 6pin's Using a Overclocking Application anyway.

 

[Teaf]

Just a little OT... I'm surpised they don't allow you to overclock the card unless you have a 8 pin connector plugged in, is this for some kind of stability reason whereby the 8 pin provides more power or something?

 

[ashmanuk67]

Thnk you for quick reply,

I have got two pci-e power cables conected now and boots up fine.

Downloaded 7.5 cat but overdrive does not show up in panel iam i doing something wrong.

 

[Boogle]

Thnk you for quick reply,

I have got two pci-e power cables conected now and boots up fine.

Downloaded 7.5 cat but overdrive does not show up in panel iam i doing something wrong.

Overdrive only shows up if you have an 8-pin PCI-E power adapter plugged in.

You can still OC with AMD GPU Tool though.

 

[ashmanuk67]

OPPS SORY I SEE NOW



THANKS ALL

 

[Jumping]

Just a little OT... I'm surpised they don't allow you to overclock the card unless you have a 8 pin connector plugged in, is this for some kind of stability reason whereby the 8 pin provides more power or something?

You can still OC with 2x6 pin connectors, just not through the ATI CC. Third party tools will still allow you to overclock.