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Minimum PSU for a 1800 XL?

Discussion in 'Graphics Cards' started by Paul Rodger, 28 Feb 2006.

  1. Paul Rodger

    Associate

    Joined: 25 Jan 2004

    Posts: 80

    Ive currently got an arctic T2 which has a 350 watt psu (which can go up to 450 watt for periods of time). Im looking to upgrade to a 3700 San Diego with a ATI 1800 XL card, will this PSU provide enough Juice to run this system?
     
  2. Noble-Kebab

    Wise Guy

    Joined: 25 Nov 2004

    Posts: 1,005

    Location: London

    450-500 a good quality one will do
     
  3. Paul Rodger

    Associate

    Joined: 25 Jan 2004

    Posts: 80

    Yeah thats cool, but what im wanting to know is would the PSU I currently have be able to do the job? As its an arctic case I cant upgrade the PSU, and am rather reluctant to have to buy a new case AND PSU if I can make do without it.
     
  4. ajgoodfellow

    Capodecina

    Joined: 24 Dec 2004

    Posts: 11,343

    Location: Shirley, Solihull, UK

    Hi

    The PSU should be fine - it's a high quality Seasonic PSU. When they tested a P4 3.6 GHz system with a 6800Ultra it only used 250W out of the 350W available

    Here's a PSU calculator
     
  5. MG42Maniac

    Wise Guy

    Joined: 28 Jan 2005

    Posts: 1,728

    Location: Lymington

    I was looking at that case but I was wondering do you think the PSU would have enough juice to run a AMD64 X2 4200+ , X1900XT , DFI UT NF4 Ultra D , 2gb RAM, 74GB raptor, 120gb SATA , X-fi Music, DVD-RW and 2 120mm fans? I was originally going to get a Akasa Paxpower 460w but this looks cheaper and I quite like the case.
     
  6. man_from_uncle

    Wise Guy

    Joined: 9 Jan 2006

    Posts: 1,350

    A 350w will probably cover a X1800XL if you are only running the basics along side it; 1 Hard disk, 1 optical drive, no extra fans and no separate sound card. It might well even be able to cope with a bit more..... but it might not. You may find that it doesn't even offer enough power to overclock the card stabley.

    Personally i'd buy the card first, see if it works, then upgrade the PSU if there are any problems. I think you'll just about be ok though.
     
  7. ajgoodfellow

    Capodecina

    Joined: 24 Dec 2004

    Posts: 11,343

    Location: Shirley, Solihull, UK

    If you're buying one of the new cases these come with a 450W PSU so this will be plenty :)

    As an aside, I'd go for the X2 4400+ for the extra cache or get an Opteron 165/170 and clock it - these clock like a demon and are a perfect match for the DFI board

    That's a good point. Overclocking really increases the demand on the PSU
     
  8. MG42Maniac

    Wise Guy

    Joined: 28 Jan 2005

    Posts: 1,728

    Location: Lymington

    Ok cheers for the info. I didn't know the 'new' cases came with a 450w PSU I though it was a 350w that could put out 450w for periods of time. I'll pick this one up. I looked at some benchmarks between the 4200+ and the 4400+ and its not much and if I was the get the 4400+ I would have to drop down to a X1800XT 512MB as i'm on the limit of my budget ;)
     
  9. ajgoodfellow

    Capodecina

    Joined: 24 Dec 2004

    Posts: 11,343

    Location: Shirley, Solihull, UK

    Why not get an Opteron 165/170 then?

    These both clock to 2.6Ghz+, often on stock volts or with a slight voltage bump. This makes them the same as the FX60 - 2.6Ghz per core, 128KB L1 cache per core and 1MB L2 cache per core

    They're really just rebadged Athlon 64s just put under higher stress testing :)
     
  10. PinkFloyd

    Capodecina

    Joined: 21 Sep 2005

    Posts: 14,293

    Location: Bradley Stoke, Bristol

    Very good psu calculator, much better than any of the others I have seen. Thanks.