Crossfire x 5770

[Andrew149]

Hey guys i now have 2 ati 5770 i wanna know once you put the cards in both slots do you connect both the wires to the cards also what do most people over clock these graphic cards to? oh and one more thing my windows experience is a 7.4 shouldnt it be higher one 5870 is like 7.8 i dont get it...

-Motherboard-Msi-790Fx-GD70
-Memory-Corsair Dominator 8g DDR3 1333
-Case-Cooler master-HAF 932 AMD Limited Edition
-Power Supply-Ultra x4 500w modular
-SSD-Ocz vertex-2-60gb raid 0 total size 120gb
-XFX Radeon HD 5770 1GB 2x crossfirex
-Amd Phenom 2 x4 965 Black 3.4 stock OC 4.0 16x
-Windows 7 ultimate 64 bit
-Atapi light scribe dvd burner
-Cpu cooler- Thermaltake CL-W0121 Water Cooling System
-Fsb-250

 

[ThePizzaMan]

hm that should be all you have to do, and it just depends probably not though

 

[Andrew149]

yeah what was also weird is last night i found out all the pci slots are not all the same speed

 

[ThePizzaMan]

hm when crossfired some boards drop them both to 8x

 

[Mellon Head]

hm when crossfired some boards drop them both to 8x

I'm surprised that a 790FX chipset would do that though. I thought the whole point of the FX chipset was that they're performance boards for Crossfire. Might just be a BIOS setting... or lazy engineering...

 

[ThePizzaMan]

true but msi sometimes does that..

 

[Mellon Head]

Yeah. Foxconn too.

 

[Andrew149]

umm my slots are 16x

 

[Mellon Head]

So are mine, but they go down to x8 with two cards installed.

 

[simmo]

Had a look at the MSI site...according to that both PCI slots are 16 lane...interested in knowing how this pans out as I have just purchased a MSI X58 premium board, tho i believe this mobo needs a bios update on install..

in hindsight i should have bought the Asus P6T

 

[Mellon Head]

Had a look at the MSI site...according to that both PCI slots are 16 lane...interested in knowing how this pans out as I have just purchased a MSI X58 premium board, tho i believe this mobo needs a bios update on install..

in hindsight i should have bought the Asus P6T

According to the Foxconn website, both of my slots are x16, as shown in this screen shot:


But when you plug in two cards, they go to x8. Mine's supposed to be a premium board too.

I hope yours works out better, but remember: Don't believe everything you read.

 

[Andrew149]

DAMN! thats so stupid i tried battlefied 2 just to see how this rig would perform not one stutter or one thing it was perfect im so impressed

 

[XGUNTHERC]

haha andrew.. enjoy. Although I'm thinking that 500w PSU might have a hard time pushing SLI 5770's I mean it will run it, since power rating are ALWAYS overrated. but it might not last for 2 long being pushed to the max. I'd upgrade to a HX750 or something.

ATI Radeon? HD 5770 System Requirements

and those cards in CF will be a blast. I just sold my SLI 260's and got the GTX 480. and with it heavily overclocked I'm pushing pretty far past the 5870 on it. very impressive. stock is 701 Mhz, and I'm able to hit 870 Mhz and 2200 Mhz on the memory. most peoples 480's aren't doing over 2000 on memory. One guy's can do 2300. but mine hitting 2200 is pretty decent. the bandwidth GB/s rating is going sky high with the overclock.

 

[ThePizzaMan]

Had a look at the MSI site...according to that both PCI slots are 16 lane...interested in knowing how this pans out as I have just purchased a MSI X58 premium board, tho i believe this mobo needs a bios update on install..

in hindsight i should have bought the Asus P6T

yea asus always has the best cf/sli boards

 

[Andrew149]

haha andrew.. enjoy. Although I'm thinking that 500w PSU might have a hard time pushing SLI 5770's I mean it will run it, since power rating are ALWAYS overrated. but it might not last for 2 long being pushed to the max. I'd upgrade to a HX750 or something.

ATI Radeon? HD 5770 System Requirements

and those cards in CF will be a blast. I just sold my SLI 260's and got the GTX 480. and with it heavily overclocked I'm pushing pretty far past the 5870 on it. very impressive. stock is 701 Mhz, and I'm able to hit 870 Mhz and 2200 Mhz on the memory. most peoples 480's aren't doing over 2000 on memory. One guy's can do 2300. but mine hitting 2200 is pretty decent. the bandwidth GB/s rating is going sky high with the overclock.

You are right they are a blast specialy in gaming or anything else, 750psu may haft to happen we will see! since the onlything im really drawing power is the video cards and not hard drive instead of ssd's i think the 500psu might last

 

[drywallguy]

yea asus always has the best cf/sli boards[/QUOTE]

Or maybe Gigabyte. I am personally moving away from Asus (not because of problems) for Gigabytes features. More SATA for one thing. Pretty much the same for the 790 FX, 2X16 and 1X8 on both.

 

[ThePizzaMan]

yea asus always has the best cf/sli boards

Or maybe Gigabyte. I am personally moving away from Asus (not because of problems) for Gigabytes features. More SATA for one thing. Pretty much the same for the 790 FX, 2X16 and 1X8 on both.[/QUOTE]
most of the good asus boards have 16x on each in cf\sli

 

[Andrew149]

im actually loving my msi its a effin awasome board! so many things you can do with it specialy when your a gamer and overclocker guy like me

 

[burndonesinkcha]

MSI 790fx-gd70 PCIe x16

Slots 1 and 3 will run at x16, 2 and 4 run at 8x. Using more than two cards, the speed drops to 8x across all four.