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i have mobo with pcie 3.0 x16 the other one is 2.0 x4

Last response: in Motherboards
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May 30, 2014 11:27:20 AM

i wanna CrossF sapphire r9 270x will it hurt the perofrmance i just dont knowwho to belive everyone says something diffrent how many % performance will i get heres my rig My setup

Windows 7 64bit

i5-3330 CPU @ 3.00GHz, 3201 Mhz, with turbo boost

Gigabyte B75 MB 3.0 x16 the other one is 2.0 x4

8.00 GB HyperX 1600mhz

Sapphire R9 270x dual-x 2gb 1070 boost core memory 1400 Catalyst Version 14.4 PCIE 3.0

samsung spine point3 500mg 16m 7200rpm

deepcool 400 gammax

Series P1-650B-BEFX psu

V9 BlacX Edition Case

i was told i will get 10-15 % perofrmance depends on the Game plz help

More about : mobo pcie x16

a c 487 V Motherboard
May 30, 2014 11:33:45 AM

If your 2nd PCIe X16 slot is only X4 lanes, I would avoid using a 2nd card. The bandwidth will suffer. The ver 2.0 however, is no problem Most (all?) cards today cannot saturate the bandwidth of 2.0.
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May 30, 2014 11:36:20 AM

sorry i didnt understand your answer the x4 lane is ok to do cross fire ?
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a b V Motherboard
May 30, 2014 11:38:55 AM

2.0 4x, you'll be fine to crossfire a 270x.

you'd see no difference at all.

now if you were talking 290x, then you would start to notice it.
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May 30, 2014 11:39:38 AM

i wanna know if i will see any performance + and if my CPU will bolltneck the cards ? there som tests on the web x4 x8 not really much diffrent few fps
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May 30, 2014 11:42:12 AM

lowriderflow said:
2.0 4x, you'll be fine to crossfire a 270x.

you'd see no difference at all.

now if you were talking 290x, then you would start to notice it.



i wouldnt lose perofrmance or i wont see incress fps when gaming ?
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a b V Motherboard
May 30, 2014 11:53:07 AM

If you are crossfiring 270x, you'll notice a difference.
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May 30, 2014 12:01:42 PM

so i will see difference in performance running on X4 lane its worth to do it
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a c 487 V Motherboard
May 30, 2014 12:20:49 PM

You'll be sorry if you spend money on a 2nd card for a X4 lane slot. I have done this. I speak from experience. The slow slot will impede performance too much.
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May 30, 2014 12:24:47 PM

so if one gpu is running on 3.0 x16 the other running on 2.0 x4 dose the 3.0 x16 drope down to diffrent number x8 x8 or x4 x4 or just x16 x4 ????
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a c 487 V Motherboard
May 30, 2014 12:26:16 PM

ATI7000 said:
i found this searching plz take look http://www.neowin.net/forum/topic/992460-what-does-x4-b...


I don't have time to read the entire thread/discussion. Perhaps you can sum it up for me. Nevertheless, I have read several articles that say it is sufficient at X4 to use a 2nd card. That is why I did it. But I am here to tell you they are wrong.
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May 30, 2014 12:27:17 PM

Ivy Bridge Core processors said to work better in x4 lane is this true ?
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May 30, 2014 12:29:15 PM

clutchc said:
ATI7000 said:
i found this searching plz take look http://www.neowin.net/forum/topic/992460-what-does-x4-b...


I don't have time to read the entire thread/discussion. Perhaps you can sum it up for me. Nevertheless, I have read several articles that say it is sufficient at X4 to use a 2nd card. That is why I did it. But I am here to tell you they are wrong.



so it sucked ? that bad i mean how bad was it bro
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a c 487 V Motherboard
May 30, 2014 12:30:09 PM

ATI7000 said:
Ivy Bridge Core processors said to work better in x4 lane is this true ?


???? CPUs don't work in PCIe slots. They provide the PCIe slots their lanes. A PCIe slot at ver 2.0 is the same speed no matter what processor is being used.
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May 30, 2014 12:30:22 PM

shit that means i need buy 3.0 x16 2.0 x8 right to see good diffrence
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a b V Motherboard
May 30, 2014 12:30:30 PM

The money investment into this isn't worth the outcome. I feel like your psu might not be able to support a crossfire in the first place.
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a c 487 V Motherboard
May 30, 2014 12:30:57 PM

ATI7000 said:
shit that means i need buy 3.0 x16 2.0 x8 right to see good diffrence


Stick with a fast single card.
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May 30, 2014 12:32:10 PM

Series P1-650B-BEFX its not good psu ???? CFing
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May 30, 2014 12:34:57 PM

clutchc said:
ATI7000 said:
shit that means i need buy 3.0 x16 2.0 x8 right to see good diffrence


Stick with a fast single card.



i mean dont get me wrong the sapphie 270x dual X i maxed out any game i thow at it i just want it to use the lane that says crossfire ready its petty stupid i dont see why they do this shit

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a c 487 V Motherboard
May 30, 2014 12:35:44 PM

ATI7000 said:
Series P1-650B-BEFX its not good psu ???? CFing


If this is your PSU: http://www.newegg.com/Product/Product.aspx?Item=N82E168...
It is high quality and would be OK for dual cards of that class. Normally, I like to see 750W or greater for dual cards, but that PSU would handle it.
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a b V Motherboard
May 30, 2014 12:40:16 PM

Oh i was mixing this thread and some other thread up, apologies. But, i still think that a 650 wouldn't be very good for crossfiring. like clutchc said, a 750 would probably be more appropriate. But that 650 can probably do it.
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a c 487 V Motherboard
May 30, 2014 12:40:55 PM

ATI7000 said:
clutchc said:
ATI7000 said:
i found this searching plz take look http://www.neowin.net/forum/topic/992460-what-does-x4-b...


I don't have time to read the entire thread/discussion. Perhaps you can sum it up for me. Nevertheless, I have read several articles that say it is sufficient at X4 to use a 2nd card. That is why I did it. But I am here to tell you they are wrong.



so it sucked ? that bad i mean how bad was it bro


Some games showed a very minor improvement over the single card. Some games actually resulted in slightly lower FPS than a single card. It wasn't pretty. This was several years ago. The cards were HD 6850s. But if it hampered HD 6850s, it would do more so with 270Xs. Plus back then micro-stutter was always present with 2 AMD cards. Thankfully that has been pretty well eliminated now.
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May 30, 2014 12:42:05 PM

Calnin said:
Oh i was mixing this thread and some other thread up, apologies. But, i still think that a 650 wouldn't be very good for crossfiring. like clutchc said, a 750 would probably be more appropriate. But that 650 can probably do it.


how about the case will it keep the heat out if i was to get new board x16 x8 ? the air flow

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May 30, 2014 12:44:35 PM

V9 BlacX Edition
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a c 487 V Motherboard
May 30, 2014 12:47:19 PM

Why would you want to spend money on a new MB (and possibly a new OS) just to use Crossfire? If you feel you need more graphics performance buy a faster card and recoup some of the cost by selling your old card. I do that all the time.
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May 30, 2014 12:50:29 PM

clutchc said:
Why would you want to spend money on a new MB (and possibly a new OS) just to use Crossfire? If you feel you need more graphics performance buy a faster card and recoup some of the cost by selling your old card. I do that all the time.



i love the 270x its dope ass GPU lol 2 would look beasty im really happy with it
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May 30, 2014 12:53:07 PM

whats good mobo to buy for crossfire ?
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a c 487 V Motherboard
May 30, 2014 1:03:08 PM

ATI7000 said:
whats good mobo to buy for crossfire ?


Any Asus, Gigabyte, Asrock with at least X8, X8 PCIe x16 lanes. Since you have a non-K processor, I am assuming you won't be O/C'ing it. So extra heavy duty VRMs with heat syncs isn't mandatory.
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May 31, 2014 4:05:28 AM

i have friend with same cpu he got his 3.6 oc with no problem
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a c 487 V Motherboard
May 31, 2014 12:03:28 PM

ATI7000 said:
will thanx alot guys for the info peace :) 

so this site is bullshit http://www.techpowerup.com/reviews/Intel/Ivy_Bridge_PCI...


That looks like one of the articles that got me convinced x16, x4 Crossfire was OK. My results sure were nothing like theirs. Of course I wasn't using that high end of a pair of cards either.
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June 1, 2014 12:09:18 AM

clutchc said:
13396837,0,1570123 said:
will thanx alot guys for the info peace :) 

so this site is bullshit http://www.techpowerup.com/reviews/Intel/Ivy_Bridge_PCI...
said:


That looks like one of the articles that got me convinced x16, x4 Crossfire was OK. My results sure were nothing like theirs. Of course I wasn't using that high end of a pair of cards either.[/quotem

which cards were you using ?? bro
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June 1, 2014 12:11:14 AM

what brand and model GPU did you use for the crossfire?
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June 1, 2014 12:11:24 AM

what brand and model GPU did you use for the crossfire?
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June 1, 2014 12:14:10 AM

how many % you think the 2th 270x running in 2.0 x4 preform ? looking at the chart techpowerup.com test looks good i dont know maybe for the 270x might look bad
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a c 487 V Motherboard
June 1, 2014 1:11:54 PM

I had 2 x Sapphire HD 6850. Like I said, it was some time ago. The first thing I noticed was the stutter. But that was an issue with the old AMD drivers and CF. The next thing was my FPS were only a few PFS more than with a single card. Enough to know CF was working, but not enough to make it worthwhile.

If you want to take a chance, go for it.
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