R9 270 crossfire with RM550x

zeleninovysalat

Commendable
Jan 20, 2017
2
0
1,510
Hello, I have Corsair RM550x and MSI R9 270 graphics card. My question is: will my psu be able to run two of these graphics cards if I bought another one and put them to crossfire?

Rest of the PC:
i7 4790
R9 270
MSI b85-g43
12GB Kingston DDR3 1600MHz (2x4+2x2)
Intel 535 SSD
WD Blue 1TB 7200 rpm
Corsair RM550x
3x140mm fan
2x120mm fan

I tried to use some online calculators and I found out that my pc should take around 475W with CF, but I am not sure if it will be stable.
Do you think single RX 480 should be better? It has almost the same performance as R9 270 in CF but R9 270 costs 1/3 of RX 480.

Thanks for your advice. (and sorry for my english, not native speaker)
 
Solution
I would favor the 480, because crossfire and sli almost never work better than one single powerful card. The 480 has 4 or 8gb of vram, the 270s have 2gb right? You might get similar performance in some situations but in others you will wish you had the 480. I think you could run that crossfire with that PSU. The difference in cost is large, especially if you don't sell your 270 in order to help pay for a 480 if that's what you choose.

In the end I think the decision comes to this: Can you live with a 2gb vram situation or do you need 4gb? If it were me I'd either stick with the 270 I have, until I can afford to upgrade(a 470 or 480), or I'd upgrade now and sell my 270. I can't think of any situation where buying ANOTHER card and still...
I would favor the 480, because crossfire and sli almost never work better than one single powerful card. The 480 has 4 or 8gb of vram, the 270s have 2gb right? You might get similar performance in some situations but in others you will wish you had the 480. I think you could run that crossfire with that PSU. The difference in cost is large, especially if you don't sell your 270 in order to help pay for a 480 if that's what you choose.

In the end I think the decision comes to this: Can you live with a 2gb vram situation or do you need 4gb? If it were me I'd either stick with the 270 I have, until I can afford to upgrade(a 470 or 480), or I'd upgrade now and sell my 270. I can't think of any situation where buying ANOTHER card and still just having 2gb is acceptable to me.
 
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