1. when you put 2 or more ATi cards on the same system it's called CROSSFIRE, NOT sli.
2. you'll most likely need to change you power supply if you'd put 2x 260s in it.
you can't run 2 nvidia cards on your system cause your motherboard doesn't support sli.
Thanks Yeah....I know it's called Crossfire with my Ati's but I have been looking at Nvidia cards and they are continually talking Sli. My PC supplier also says my motherboard can handle the hd ATI's or the nVidia 260, 275 if I want but they suggested I need 1000 Watt PSU for the 275's. I was asking about the PSU?
I have to use a 2 card setup in the board, I don't care about the crossfire, currently I am not impressed by the HD3870 x2 running in crossfire. Do I need the 1000 w for the 260's?
I have an AMD 2 630 Quad Core CPU with Hypertransport technology according to my pc supplier I can put 2 nVidia gtx 260 or 275's in there or 2 x HD 4850 but is the 4850 much better than the 3870 which doesn't impress me. My motherboard is an Asus M4A78LT-M LE AM3 DDR3. For Sli or Crossfire setups my pc specialist is telling me all that matters is that the cards are the same and they are suggesting even 2 gtx 275's or 295's. I just don't want to spend quite that much right now, especially if I have to upgrade to a 1000 watt PSU.
your current PSU isn't that great, also it doesn't have the correct power connectors for 2 x GTX260
though again, your motherboard will not support sli, only crossfire, as there are no AM2 motherboard that can support sli and crossfire and you have crossfire, you can't use sli
also, i would still suggest the ATI HD5850 and you wouldn't have to replace the PSU
also later if you wanted another 5850 you could replace the PSU then
What PSU would you suggest that isn't too expensive? Is the ATI HD5850 way better? I have been using ATI for years but don't like the HD 3870. It's just my pc specialist technical department suggested the gtx range as his first choice. I just didn't like their prices....£595 for HD 4870 X 2 plus vat at 17.5 % and I don't want to mention their fee for the GTX 295?!Naturally he wanted me to put a GTX 295 in there.
the HD5850 is a bit more powerful than the GTX285 (about 2 x 4850 or so)
it would work on your current PSU, though if you wanted you could get a better one for later
Corsair 750TX isn't too expensive, though i don't know shops from over the pond (in in the US)
Thanks sounds like a good card then....though I am still considering your suggestion of the 4850's. The Corsair 750 TX is selling over here for about £94.99 with VAT added which isn't too bad. I am now way confused by my pc suppliers technical department, as they know my system and the specs. I bought the machine from Cyberpower over here. Thanks for all the help....over the pond huh?....pretty big pond....wouldn't like to see the ducks!
No they can't be pushed that far, my PC Power and Cooling Silencer 750w can run fine at 950w according to their tests but the power supply still should NEVER EVER run over the rating for even a small period of time. His system with 2 GTX 275 would hit about 600w with EVERYTHING drawing 100% power, which never happens, and with 2 5850s it will never go over about 550w, and with a good PSU that is fine, which the Hiper 630w is.