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Installing ASUS HD 5770 on HP Pavilion a6450.

I'm planning to buy an ASUS CuCore Series EAH5770 CuCore/2DI/1GD5 and i wonder if I must buy a new psu along in order to get it running.

My pc is HP Pavilion a6450.is (Specs page) ,which currently has a 300-watt (Merlot C) psu installed. So in case i have to replace the psu, which model should i get considering I'm pretty low on budget? I've been thinking about CORSAIR CMPSU-400CX 400W, but is there anything cheaper like some $20 500w models?

Another question: Will this GPU fit in my case, considering it's pretty big in comparison with the 8600gt i currently have.

Sorry for my bad English.
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  1. Best answer
    The Corsair CX400 is a good choice, if you want cheaper the minimum PSU's I would recommend is the Corsair CX430 or Antec EA380.
    Your system has a PCIe x16 version 1.x slot there have been multiple issues with no video using version 2.1 cards. Going with a version 2.0 card is recommended to avoid that issue http://www.newegg.com/Product/Product.aspx?Item=N82E16814150462
  2. Can you explain more about the PCIe issue?

    If my system has a 1.x slot would it still be ok to go with 2.0 but not 2.1?

    Is there a way to know if my mobo has a BIOS that supports 2.1 ?
  3. Considering my mobo has a G33 chipset, it must also have PCIe 2.0 not 1.x, can someone confirm this?
  4. Regardless of advertised full compatibility!
    Soon after ATI released the PCI express version 2.1 cards with the HD5xxx series this forum filled up with posts about no video issue on motherboards with version 1.x slots. It was found out that board manufacturers needed to do a BIOS fix but very few did on not nearly all their products. I am not aware of any of the OEM´s updating their BIOS´s for this issue. There have been no reports of similar issues with version 2.0 cards in the older slots, which confirms with the full compatibility
  5. Thanks for replying, allow me to ask more questions just to make sure:

    I've been doing some research and found that Asus IPIBL-LB mobo has PCIe 2.0 slot not 1.x, so are you certainly sure that it's 1.x?

    What would happen if i inserted that card without getting a newer psu, as my OC'd 8600gt been running great for 1 year? Also what do you think about this psu:

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817371030&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&AID=10446076&PID=1727683&SID=

    Thanks for your time.
  6. I vent by this http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01324212&lc=en&dlc=en&cc=us&product=3728863#N278 usually they specify if the X16 slot is version 2.0
    If you do not get a new PSU you most likely will experience instability under load (3d ops).
    On that PSU I have not seen any reviews but rumors say it is reasonable quality and it has good amperage on its rails.
  7. I asked some retail stores here if they have any HD 5770 PCIe 2.0 model, and sadly there's only 2.1. So should i take my chances with 2.1 since my mobo's BIOS have been updated on December 2010, so maybe they included 2.1 support.

    or you think i should search for another card?
  8. Chances are with that resent an update they would have fixed the Issue, other cards that you could go for is GTS450 or GTX460SE or 768MB, the former a little less powerful the second a little more. http://www.techpowerup.com/reviews/Gainward/GeForce_GTX_460_SE/27.html
  9. Thanks you've been really helpful.

    I found a pre-overclocked gainward gts 450 PCIe 2.0, and It's actually cheaper than HD 5770.

    Do you think there's a big fps difference between them as I'm going to play some demanding games? If not i'll just go with gts 450.

    My monitor only supports 1240x1024 max anyway, so gts 450 seems fine for playing games like crysis on high settings. But will it requre a new psu as well?
  10. There is a lot games @ different resolution in this MSI GTS450 review http://www.techpowerup.com/reviews/MSI/GeForce_GTS_450_Cyclone_OC/6.html
    The HD5770 is about 10-15% more powerful but an overclocked GTS450 brings that difference down to about 5%. The GTS450 is a great card for your resolution!
  11. Alright i think it hits the sweet spot between price and performance, so I'll get it this week hopefuly.

    But will it require a better psu than my 300w OEM as well?
  12. Yes it does. Max GPU on your OEM 300watt unit would be HD5670 or GT240
  13. Do power supplies come in standard size? should i worry if it'll fit in my pc or not?

    I found this one for $30 only in a store nearby: http://france.test.giga-byte.com/Products/PowerSupply/Products_Spec.aspx?ProductID=3392&ProductName=LC500 Should i get it?

    Also is there a way to know for sure if gts 450 will fit in my pc?
  14. By fits i mean physically fits, as it's pretty long. The SATA Slot may be an obstacle for it.

    Anyway i think it requires 24amps on the 12v rail, so buy 12v do they mean +12V1 or +12v2 or -12V ?

    The psu i found is +12V 0.5A 20A so i guess that doesn't work.
  15. th3hate said:
    Do power supplies come in standard size? should i worry if it'll fit in my pc or not?

    I found this one for $30 only in a store nearby: http://france.test.giga-byte.com/Products/PowerSupply/Products_Spec.aspx?ProductID=3392&ProductName=LC500 Should i get it?

    Also is there a way to know for sure if gts 450 will fit in my pc?

    Although that PSU is not on the recommended list it is plenty big for your setup and should fit the total amps on the +12volt is 432/12= 36amps. Not knowing the quality I still recommend Corsair, Antec or Seasonic. Some of the OCZ are reasonable quality and are available in Europe.
  16. I noticed my mobo has 1 PCI x16 slot for graphics card but gts 450 requires a dual-width x16 graphics slot, is that ok?

    Also should my case dimensions be plenty for it?

    Height: 38.7 cm (15.23 inches)
    Width: 17.5 cm (6.89 inches)
    Length: 41.4 cm (16.29 inches)
  17. Best answer selected by th3hate.
  18. th3hate said:
    I noticed my mobo has 1 PCI x16 slot for graphics card but gts 450 requires a dual-width x16 graphics slot, is that ok?

    Also should my case dimensions be plenty for it?

    Height: 38.7 cm (15.23 inches)
    Width: 17.5 cm (6.89 inches)
    Length: 41.4 cm (16.29 inches)

    It should be fine in your case, the cards cooler will block the next slot down from your PCIe slot (usually a normal PCI slot) that is what they mean with a dual slot card.
  19. Thanks dude, I've bought a this card a few days ago and it's running great.

    One question thought: I don't notice performance increase after overclocking to 930core/2100mem so how do i know if my cpu or rams are bottlenecking?
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