xfire

[rubber5]

hi everyone i wanted to know what will be better for price and performance
i have a gigabite p55 ud5 motherbord and an i7 920@3.5 ghz can get 4.0ghz if i need to
also i have a coolermaster 850 watt psu will 3x 5850 be ok or will i need an upgrade
but i dont know what gpu setup to go for
2x 5870 in xfire or
3x 5850 in xfire
im only using a 1080p res (at the mo)
but wanting to upgrade to 3x 1080p res later
but not sure what to do is there anyone that can help me
thanks everyone

[Razrback16]

I vote for 2x5870 over 3x5850.

[demowhc]

5850 Tri-Fire rapes 5870 CF, I know because I have 5850 Tri and have benched many games against friends 5870 CF systems. Basically 5870 Tri-Fire minus 10% and you are around 5850 Tri speeds..

Secondly, the cooler master 850w probably wont cut it. I had a Thermaltake 850w and while I could play games ok, if I turned up the eye candy to say 24xEDAA+SSAA in Crysis or Stalker CoP I would hear the PSU ticking under stress then BSOD. Changed PSU and havnt had a problem since.

the thermaltake had 4 x 12v rails (2 @ 30A and 2 @ 18A) so depending on the 12v rails on that cooler master PSU I dont think it will handle extreme loads.

Also you have a P55, I am using X58 which is 16x+8x+8x, I think P55 will only run 8x+8x+4x??

[Kvickstick]

I vote for 2x5870 over 3x5850.

Same.

[rubber5]

5850 Tri-Fire rapes 5870 CF, I know because I have 5850 Tri and have benched many games against friends 5870 CF systems. Basically 5870 Tri-Fire minus 10% and you are around 5850 Tri speeds..

Secondly, the cooler master 850w probably wont cut it. I had a Thermaltake 850w and while I could play games ok, if I turned up the eye candy to say 24xEDAA+SSAA in Crysis or Stalker CoP I would hear the PSU ticking under stress then BSOD. Changed PSU and havnt had a problem since.

the thermaltake had 4 x 12v rails (2 @ 30A and 2 @ 18A) so depending on the 12v rails on that cooler master PSU I dont think it will handle extreme loads.

Also you have a P55, I am using X58 which is 16x+8x+8x, I think P55 will only run 8x+8x+4x??

thanks for that i was rong on the motherbord its a x58 the is motherbord its 16x+16x+8x
here is the link for the bord
http://www.giga-byte.com/products/pr...px?pid=2958#ov
will it be better to cf x5870 then have an 8800gt for physx or is it pointless having a physx card

[demowhc]

Ah yes I thought X58 is 16+16+8 but wasnt sure so just typed 16+8+8..

and that mobo is ok, I have the X58A-UD3R and it oc's well and runs CFX great.

In that case I say go for 5850 Tri-Fire, it will be a lot faster and you will get more use out it than 5870CF + 8800. Or, you could just get 5870 CF and use the 8800 for now and then get another 5870 later down the track when they are cheaper, just be prepaired for possibly needing another PSU at that time.

[i got aquestion]

it your thinking about upgrading to Eyefinity than go with 5870 CF because i don't think Eyefinity works with trifire

[rubber5]

ok thanks for that if i was to go tri fire with 5870 what sort of psu will i need ie make and wattage
thanks for your help everyone

[demowhc]

I'd recommend antec 1200w quattro, I just bought one myself, it has 6 x 12v rails @ 38A each, plenty for 5870 Tri and a few upgrades to come

[Blackstare]

I'd go with the 5850's in Trifire, but, how are you using a P55 board with a 1366 cpu? lol

[Final8ty]

it your thinking about upgrading to Eyefinity than go with 5870 CF because i don't think Eyefinity works with trifire

It Does work.

[rubber5]

I'd go with the 5850's in Trifire, but, how are you using a P55 board with a 1366 cpu? lol

i messed up my motherbord is an x58 lol feel like a dumb ass saying that

[rubber5]

i forgot to ask is there a brand name for ati gpu cards which is better to go for (warranty) is the main thing that is
as i need it to last as long as possible
thanks everyone for your help