Which case and PSU for CrossFire 6870?

Hey guys,

I am thinking of doing an upgrade and I do not think my Antec 200v2 will have the space or cooling for the two ATI 6870's I plan to get. Also, the CoolerMaster Exteme Power+ 500W power supply will not cut it either.

I want to spend as little as I can on the power supply; not much more than $150AUD if I need to. The case is also something I will spend no more than $150 on.

I am currently thinking:
CoolerMaster RC-922M HAF
Antec Dark Fleet 35
and
Corsair TX-750

Will 750W cut it? I know that a PSU calculator said I would only need about 620W but it has been rumoured that one needs at least an 850W PSU for CrossFire ATI 6870 cards.

I am not 'loyal' to any PSU or Case brands; I will take any brand/model/company/design so long as it gives me good cooling and fits my parts (and my budget).

Thanks,
-Klosteral
19 answers Last reply
More about which case crossfire 6870
  1. 750w should be fine for 2 x 6870s. I like the DF 35/85 of the listed cases.
  2. Right^
    TX750 suffices for 2 6870s.
    HAF 922 is also good;however,if you need a full tower case,consider it's bigger brother(HAF 932)
  3. In the 750 category, the XFX PSU's are a better buy than the Corsair TX series. The Core editions get a 9.5 performance rating on jinnyguru.com and the Black Editions get 10.0 ratings. The much more expensive Corsair HX would be the equivalent t those. On this side of the pond both the Core and Black Editions are $90 at the moment.

    The DF-865 and HAF-922 are great cases. However, we can often find the Antec DF-85 on special w/ the CP-850 PSU for under $300 ... not sure how prices are "down under" of late
  4. The DF-series has a bezel for the ODDs that you have to open everytime in order to use your ODD, w/c for some people is a PITA. If instead you buy the 912, take a look at it @ CM website. Cost about $60-$80, then you can buy an even better PSU, the CORSAIR AX850, gold certified, fully modular psu, w/c keeps cabling @ a minimum.
  5. Ok, I thought I put prices for my parts up as well but obviously I did not.
    See them here:
    650W-750W Power Supply Units: http://www.msy.com.au/default.jsp?category=97&page=1
    Cases without PSU: http://www.msy.com.au/default.jsp?category=42

    RC-922 $130
    DF-35 $123
    TX-750 $145

    I do not know if I have seen many (if any) XFX branded PSUs over here so I am unsure as to what you are describing. The only difference between the Corsair TX and HX series that I am aware of is that the HX is modular and the TX is not, though you pay greatly for the privelage.

    There is quite a difference between the DF-35 and DF-85, just as there is a difference between the HAF-922 and HAF-932. Is it worth spending more for a larger tower case? I want good cooling and the ability to fit all of my parts but I still want the case to fit under my desk.

    Thanks,
    -Klosteral
  6. Like I said,HAF 922 is fine for your rig,but HAF 932 has more room.If the price difference isn't much and you can fit it under your desk,then go with 932;otherwise,stick with 922.
  7. Ok, here are some more prices:

    Antec DF-35 $123 (mid-tower)
    Antec DF-85 $175 (full tower)
    CoolerMaster RC-922 HAF $128 (mid-tower)
    CoolerMaster RC-932 HAF $165 (full tower)

    What is the difference between the cases (aside from size) and is the extra space/room really necessary? What does more space mean? Does it just mean the components can be more easily fitted or that the cooling will be improved?

    Also, the case is not just big, it is massive. It will still fit under my desk but it seems to be a couple inches wider and several inches taller than my Antec 200. After checking the specifications of the graphics card (ATI 6870) I have found that at 9", it will fit in almost any case.

    Still, am I better off spending $165 on a full tower case or spending less on a mid-tower.

    Sorry for being picky,
    -Klosteral
  8. Antec High Current Gamer 750W Power - $149.00
    http://www.pccasegear.com/index.php?main_page=product_info&cPath=15_226&products_id=16142

    Antec TruePower TP NEW-750 750W - $139.00
    http://www.pccasegear.com/index.php?main_page=product_info&cPath=15_226&products_id=11005

    Corsair TX-750 Power Supply - $145.00
    http://www.pccasegear.com/index.php?main_page=product_info&cPath=15_354&products_id=6227

    XFX Core Edition Pro 750W - $145.00
    http://www.pccasegear.com/index.php?main_page=product_info&cPath=15_979&products_id=15772

    I have no clue how much room you have under your desk but some of the cases being discussed are big.
    My desk has 30" clearance floor to table top.Plus i don't put my cases on the floor i put them on a side table to keep them cleaner = way less dust.

    CoolerMaster CM 690 II Advanced - $109.00
    http://www.pccasegear.com/index.php?main_page=product_info&cPath=25_31_504&products_id=13772

    CoolerMaster CM 690 II Advanced with Window - $125.00
    http://www.pccasegear.com/index.php?main_page=product_info&cPath=25_31_504&products_id=13773

    CoolerMaster HAF 922 Case - $128.00
    http://www.pccasegear.com/index.php?main_page=product_info&cPath=25_31_504&products_id=11652

    CoolerMaster HAF 922 with Window - $135.00
    http://www.pccasegear.com/index.php?main_page=product_info&cPath=25_31_504&products_id=11754

    Antec Nine Hundred Two V3 Case - $138.00
    http://www.pccasegear.com/index.php?main_page=product_info&cPath=25_733&products_id=16228


    I personally have a CM690II and the original 902 both have excellent filtered cooling and lots of room.
    I don't see the need for a full tower case .
  9. Corsair TX 650W
    Seasonic X-Series 650W
    XFX 650W XXX Edition
    Corsair CX 600W

    Any of them will do
  10. I am seriously unsure about going as low as a 650W power supply. I have heard rumours that some need at least an 850W to run in CrossFire so I am taking a gamble going for a 750W. Of those, I am probably going to end up with the Corsair TX-750 at $145 from www.msy.com.au.

    As for the cases, I can see the following:
    Antec 902 $118
    Antec DF-35 $123
    CoolerMaster RC-692 $124
    CoolerMaster HAF 922 $128
    CoolerMaster HAF 932 $165

    Of these, which would you recommend in terms of internal space and cooling. I care little about asthetics at this time, just efficiency and price. I will go with the 692 unless it turns out cooling is indifferent between that and the 922, or the 692 just runs out of stock. In that case, I will go with the 922 because it has the side-loading HDD bay and (despite what I said before) looks cool.

    Thanks,
    -Klosteral
  11. Klosteral said:
    I am seriously unsure about going as low as a 650W power supply. I have heard rumours that some need at least an 850W to run in CrossFire so I am taking a gamble going for a 750W. Of those, I am probably going to end up with the Corsair TX-750 at $145 from www.msy.com.au.

    As for the cases, I can see the following:
    Antec 902 $118
    Antec DF-35 $123
    CoolerMaster RC-692 $124
    CoolerMaster HAF 922 $128
    CoolerMaster HAF 932 $165

    Of these, which would you recommend in terms of internal space and cooling. I care little about asthetics at this time, just efficiency and price. I will go with the 692 unless it turns out cooling is indifferent between that and the 922, or the 692 just runs out of stock. In that case, I will go with the 922 because it has the side-loading HDD bay and (despite what I said before) looks cool.

    Thanks,
    -Klosteral

    All of those cases are very good.
    The 690II has the exact same side HDD bays as the HAF's.
    Cooling wise the HAF's will be better only because they feature huge unfiltered fans and have massive interiors.
    You really can''t lose with any of those choices.
    Pick whichever one appeals to you the most.
    You'll have to look at it everyday!
  12. I know, but I do not care as much. As I said before it will sit under my desk. Also, my first case, this Antec 200, was only bought because it was the cheapest in-stock case at the time (at $69).If the difference between them is only $4 then I will go with the HAF-922.

    We have only discussed CoolerMaster cases so far; are there many good cases by Antec or is the difference so marginal it just comes down to looks again?

    Thanks,
    -Klosteral
  13. I actually like Antec cases better and my 1200 has just as good cooling ( or so close as not to matter ) as any Haf case. Build quality is always very high. I really love the features on the DF85 and if I was buying new today it would be my choice.


    Check out the Video.

    http://www.newegg.com/Product/Product.aspx?Item=N82E16811129087&cm_re=df_85-_-11-129-087-_-Product
  14. Ok, I can understand your brand loyalty in this case (haha) and would be happy to go with the DF-85, though I may need to be persuaded...

    Firstly, what is the difference between the DF-30, DF-35 and DF-85? They all look similar and are similarly sized, with the DF85 having one extra front fan. Are there any other differences?

    Also, how would these compare to the CoolerMaster HAF 922 and 932 cases I was thinking about? Is the cooling better? Is there more room on the inside for internals?

    Thanks,
    -Klosteral
  15. I live in Australia. Newegg is absolutely useless to me. Try recommending combos from:
    www.msy.com.au
    www.austin.net.au
    www.netplus.com.au
    They are my local stores.

    Thanks,
    -Klosteral
  16. So what you are saying is that it comes down to personal preference on look and not performance? I think that is good to know.

    I would still like to know the difference between the DF-85 and DF-35. I have seen both and one just seems to have an extra front fan...

    Thanks,
    -Klosteral
  17. The DF-85 has better cooling and more room . Basically the DF 85 replaces the Antec 1200 and the 35 replaces the 900. Even though you can not order from here there are great reviews. Also one is white themed one is red.

    http://www.newegg.com/Product/Product.aspx?Item=N82E16811129088&Tpk=df%2035


    http://www.newegg.com/Product/Product.aspx?Item=N82E16811129087&cm_re=df85-_-11-129-087-_-Product
  18. cnu palit accunt 1 bar and silver :sol:
  19. :bounce:
    anort3 said:
    The DF-85 has better cooling and more room . Basically the DF 85 replaces the Antec 1200 and the 35 replaces the 900. Even though you can not order from here there are great reviews. Also one is white themed one is red.

    http://www.newegg.com/Product/Product.aspx?Item=N82E16811129088&Tpk=df%2035


    http://www.newegg.com/Product/Product.aspx?Item=N82E16811129087&cm_re=df85-_-11-129-087-_-Product
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