Asus Crosshair V: boot_led & vga_led

[Chris Manico]

Evga gtx 580 -Requirements
Minimum of a 600 Watt power supply.
(Minimum recommended power supply with +12 Volt current rating of 42 Amps.)

EVGA GTX 550 TI - Requirements
Minimum of a 400 Watt power supply.
(Minimum recommended power supply with +12 Volt current rating of 24 Amps.)


pretty sure everything i've read was saying you need a high quality 1000 wat PSU atleast to SLI the 580's.


not sure if the info i put in is going to be there but, if you input the info, even asus reccomends 1000 watts.

http://support.asus.com/PowerSupply.aspx?SLanguage=en

[NemesisChild]

That shouldnt matter what hes running, an 850w is just fine. Look at my rig, I have no probs.

I would keep switching parts around if u can, if everything is hooked up just right you should have no probs booting. Im wondering if your mobo or cpu might be bad. Where did you get these parts?

AMD FX-8150 CPU
CORSAIR WATER COOLING
ASUS CROSSHAIR V FORMULA
2 x 120GB OCZ AGILITY SSD RAID-0
8GB CORSAIR 1866
2 x GTX550Ti SLI
850 CORSAIR POWER SUPPLY
WINDOWS 7 PRO x64
3 x DELL MONITORS

Huge difference in power supply requirements between 560Ti's and 580's in SLI.

Not even close in comparison...

[CrackBabySPORTS]

I see that you have low voltage Crucial memory, would not be among my choices.
Try booting with one stick of Corsair memory from your previuos build.
Secondly, there is no way that you are going to adequately power two 580's with a CM 850W PSU.
Yes, it's 80+ Bronze certified, but keep in mind that just one 580 requires min. 42 amps on the +12v rail.
You have to consider the PSU output under continuous load, not just it's rated output.
And now you're throwing a 125W CPU into the mix with your PSU, ever think about that?

I thought I already went over this? I ran a system before with the two GTX 580's in place and had absolutely no problems - I don't.see how that would change when all I did was change the RAM, CPU, and Motherboard..especially when each actually consumes LESS wattage than what I had before.

That shouldnt matter what hes running, an 850w is just fine. Look at my rig, I have no probs.

I would keep switching parts around if u can, if everything is hooked up just right you should have no probs booting. Im wondering if your mobo or cpu might be bad. Where did you get these parts?

AMD FX-8150 CPU
CORSAIR WATER COOLING
ASUS CROSSHAIR V FORMULA
2 x 120GB OCZ AGILITY SSD RAID-0
8GB CORSAIR 1866
2 x GTX550Ti SLI
850 CORSAIR POWER SUPPLY
WINDOWS 7 PRO x64
3 x DELL MONITORS

I got them brand new from NewEgg, but I've already tried switching components around..also, I have tried with just one video card and RAM stick

[Corp$e]

Well then something is wrong with one of your new hardware, either the cpu or the board. something isnt comunicating right,

I just got my rig from newegg too, i did alot of searching and alot of ppl got DOA boards from newegg.

[CrackBabySPORTS]

Well then something is wrong with one of your new hardware, either the cpu or the board. something isnt comunicating right,

I just got my rig from newegg too, i did alot of searching and alot of ppl got DOA boards from newegg.

Is there a known method to determine whether or not the motherboard is DOA for sure?

[pkthekiller]

Hi there, i,m having a similar problem....my config is:

CPU: FX 8120
COOLING: CORSAIR H80
RAM: 8GB CORSAIR VENGENCE 1600 CS9
MB: CROSSHAIR V (BIOS 1102)
GPU: XFX RADEON 7970 3GB
PSU: COOLER MASTER SILENT PRO 850M

My problem is that i get the vga led red all the time (after cpu and ram leds flash for once). I dont have any signal on the monitor. The fan on the gfx is spinning full speed. The PSU has 6 "6 pin to 6+2 pin PCIe connectors. As you might know te 7970 need 8+6 for juice. In the first 2 pcie slots, card wont work at all. In the 3rd one it actually worked quite some times. I was able to get into windows but the screen had flashing lines/ artifacting all along (from post to windows - though only for a few cold boots and then it was ok as long as the colours were 16bit or less. But this was only with catalyst installed(the windows part only). with standard vga drivers, no such artifacting. On top of that, the card was always downclocked (core 300 and mem 150) with catalyst. Lauching anything 3d would bring the artifacting back and eventual full system hang.
I have tried everything (like clearing CMOS, plugging the additional 4 pin molex for gpu on MB even though it should not be required, reseating everything, boot with only 1 ram in the last slot, boot with no I/O connected etc)
And now.....its not working at all.....vga led is devil red......
Just to check, i tried my old radeon 4870 512mb (6+6 pin).....and it works flawlessly....
So guys.....is it the GPU, the MB or the PSU......