4850 crossfre on 600W?

Hi I initally bought a 4850, and then a 4870 but forgot that my mobo supports crossfire. From reviews I read it seems the dual 4850's are quite a bit better than the 4870. I figure I can sell my 4870 on ebay and just another 4850.

My question is will I have enough power to do so?

My PSU is a silverstone 600W with 42A total on 12V rails combined.

My system is a Q6600 at stock speeds a gigabyte P35-ds4, 2 sata hd's 1 IDE hd, 1 sata DVD burner and an IDE CD burner, and potentially two 4850's, 4gb in 2 sticks of pc 6400 memory.

I am asking because on the anadtech review site they rate the power on load for a 4850 to be like 225W that x2 would be what 450 of my 600. But I used the PSU calculator at:

http://web.aanet.com.au/SnooP/psucalc.php

and it says I will only use like 456W on load while gaming.

So will I be able to Xfire the two 4850's with a 600W PSU or not?

Thanks

may i ask the same question? i have a high quality eurotech (very popular around here) 580w psu, with 87% eficiency rate, and 2x 12v rails that combine into a "massive" 46A, i have a p35-DS3L... i MIGHT just get another 4850 when i need to upgrade, instead of just buying a new gfx card... and btw, how big is the performance drop from 16x/16x crossfire to16x/8x?GTR2addict

I have a gigabyte P35-DS3L in a secondary PC, it only has 1 pci-e video card slot so crossfire isn't possible.

[QUOTE="GTR2addict"]may i ask the same question? i have a high quality eurotech (very popular around here) 580w psu, with 87% eficiency rate, and 2x 12v rails that combine into a "massive" 46A, i have a p35-DS3L... i MIGHT just get another 4850 when i need to upgrade, instead of just buying a new gfx card... and btw, how big is the performance drop from 16x/16x crossfire to16x/8x?andyroo08

I have a gigabyte P35-DS3L in a secondary PC, it only has 1 pci-e video card slot so crossfire isn't possible.

its got pci-e's... the diff is that 1 is 8x and the other is 16x, therefore, crossfire IS possible...

no, the DS3L does not support crossfire.Mr_NoName111

then how come tehres this user here in gs taht has crossfire 4850's on his ds3l?

[QUOTE="Mr_NoName111"]no, the DS3L does not support crossfire.GTR2addict

then how come tehres this user here in gs taht has crossfire 4850's on his ds3l?

Not sure, but the only other pci-e slots on that mobo are the pci-e x1 slots and as far as I know there aren't even any or very few video cards that will physically fit in that slot.

It prob wont handle it... you shouldve gotten a 4870, its atleast as powerful i think more and its cheaper. $270 > $320

It prob wont handle it... you shouldve gotten a 4870, its atleast as powerful i think more and its cheaper. $270 > $320

Helbrec

hmm, 4870: 280$ here,

4850: 164$...

meh, il just hold out till next gen...

It prob wont handle it... you shouldve gotten a 4870, its atleast as powerful i think more and its cheaper. $270 > $320

Helbrec

600w will be fine don't even worry... 4850s do not use that much power.

[QUOTE="andyroo08"]

[QUOTE="GTR2addict"]may i ask the same question? i have a high quality eurotech (very popular around here) 580w psu, with 87% eficiency rate, and 2x 12v rails that combine into a "massive" 46A, i have a p35-DS3L... i MIGHT just get another 4850 when i need to upgrade, instead of just buying a new gfx card... and btw, how big is the performance drop from 16x/16x crossfire to16x/8x?GTR2addict

I have a gigabyte P35-DS3L in a secondary PC, it only has 1 pci-e video card slot so crossfire isn't possible.

its got pci-e's... the diff is that 1 is 8x and the other is 16x, therefore, crossfire IS possible...

The DS3L has on PCI-E. Also P35 only supports 16x/4x crossfire(with a few exceptions), so no you really should get X38/X48 if you want crossfire. Even P45 with 8x/8x will limit 4850 crossfire.

It prob wont handle it... you shouldve gotten a 4870, its atleast as powerful i think more and its cheaper. $270 > $320

Helbrec

Not true, 600W will be enough and 4850crossfire > single 4870.