Hello,
Firstly here are my system specs
(default settings - not overclocked)
Intel E8600 CPU 3.33 GHZ
Asus Rampage Formula x48 Mobo w/ latest 410 bios update on August
(Chipset drivers installed)
4x1 GB Patriot E.P.P. DDR2 PC2-9600 @ 1200MHZ
2x 10k rpm WD sata Hardrives
1 sata dvd rw drive
2x diamond radeon 4870x2 2gb ddr5
PC&Power cooling 1200W PSU
Boreas MTECH Chiller liquid cooling the CPU w/ control center
Dual Boot Xp and Vista x64
22" LG LCD display (DVI)
The problem:
I just ordered a 2nd 4870x2 so that I could have a crossfire x setup.
However, when all the power cable are plugged in to both cards, my monitor remains in some sort of stand-by/powersaving sleep/warm-up state all throught the booting process. This means I cant see BIOS messages, nor the Vista logo, although my PC is booting all the way into windows - just with a black screen.
My display and boot works fine when I have just one of the cards installed.
Keep in mind that my monitor starts out in a temporary sleep state/warmup for about 3-7 seconds (indicated by yellow LED over the power switch) upon booting before displaying - under normal circumstances (Blue LED is active when data is being displayed on screen).
As soon as I have both cards installed AND have all power cables connected to the second card - it remains in its warm-up mode (Yellow LED) indefinately so I cant see anything on screen even though my PC boots without problems.
I tested both cards - so I know that they both work fine individually on their own.
I also tested both PCI-e x16 slots - they both work when they have only one card installed in each.
I tested all combinations of power connectors and they all seem to work.
The display works even if I install both cards into the slots, but leave the 8 pin power relay disconnected from the second card (though the GPU's would be inactive on the second card - so no crossfire).
The only time my display doesnt work is if ALL power connectors are connected to both cards.
I tried testing all the different DVI ports on the cards and I still get the blank stand-by display.
My total idle power draw doesn't exceed 570W so I know that my high quality 1200W PSU can handle all my components.
My PSU utilizes a massive single rail and has 2 6+2 pin connectors and 4 6pin connectors plus several other types of power connectors.
Anyone have any suggestions?
Firstly here are my system specs
(default settings - not overclocked)
Intel E8600 CPU 3.33 GHZ
Asus Rampage Formula x48 Mobo w/ latest 410 bios update on August
(Chipset drivers installed)
4x1 GB Patriot E.P.P. DDR2 PC2-9600 @ 1200MHZ
2x 10k rpm WD sata Hardrives
1 sata dvd rw drive
2x diamond radeon 4870x2 2gb ddr5
PC&Power cooling 1200W PSU
Boreas MTECH Chiller liquid cooling the CPU w/ control center
Dual Boot Xp and Vista x64
22" LG LCD display (DVI)
The problem:
I just ordered a 2nd 4870x2 so that I could have a crossfire x setup.
However, when all the power cable are plugged in to both cards, my monitor remains in some sort of stand-by/powersaving sleep/warm-up state all throught the booting process. This means I cant see BIOS messages, nor the Vista logo, although my PC is booting all the way into windows - just with a black screen.
My display and boot works fine when I have just one of the cards installed.
Keep in mind that my monitor starts out in a temporary sleep state/warmup for about 3-7 seconds (indicated by yellow LED over the power switch) upon booting before displaying - under normal circumstances (Blue LED is active when data is being displayed on screen).
As soon as I have both cards installed AND have all power cables connected to the second card - it remains in its warm-up mode (Yellow LED) indefinately so I cant see anything on screen even though my PC boots without problems.
I tested both cards - so I know that they both work fine individually on their own.
I also tested both PCI-e x16 slots - they both work when they have only one card installed in each.
I tested all combinations of power connectors and they all seem to work.
The display works even if I install both cards into the slots, but leave the 8 pin power relay disconnected from the second card (though the GPU's would be inactive on the second card - so no crossfire).
The only time my display doesnt work is if ALL power connectors are connected to both cards.
I tried testing all the different DVI ports on the cards and I still get the blank stand-by display.
My total idle power draw doesn't exceed 570W so I know that my high quality 1200W PSU can handle all my components.
My PSU utilizes a massive single rail and has 2 6+2 pin connectors and 4 6pin connectors plus several other types of power connectors.
Anyone have any suggestions?