R7 370 + R9 270X Crossfire?

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jollypirate

jollypirate

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Jul 18, 2014
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They should be able to crossfire fine, since cs is very forgiving about what cards you put togheter. You should make sure your power supply is good enough to run the two cards and that your motherboard supports crossfire
 
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Mr Kagouris

Mr Kagouris

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Sep 7, 2015
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Yeah I've got more than enough power for those cards and my motherboard is fine.
 
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Rogue Leader

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That is not true, Crossfire is only forgiving between two cards of the same chipset.

You can only crossfire two cards with the same chipset. So for example the R9 285 and R9 380 have the same chipset (both using the Tonga PRO) just the 285 is a lower clock.

The R7 370 and R9 270X are completely different, HOWEVER the R9 370 is a similar chipset to the 270X (Curacao pro and Curaco XT) and should in theory work. I say in theory because I don't know of anyone that tried it and I don't want you to go spend $150 on something that may not work. Also the R9 370 is apparently only available as an OEM device (as in it comes in some pre-builts but you can't just go to the store and get one).

You're better off getting another 270X or selling the 270X and getting yourself a really good card instead of the R7 370 like an R9 380X or R9 390.
 
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Rogue Leader

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No everything should not work, the R7 370 and R9 270X are different chipsets, thats what hes asking about. They will not work together.
 
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Mr Kagouris

Mr Kagouris

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Is there any 300 series card that works with the 270X? Also I'd like to know what happens when you try to Crossfire two incompatible cards. A friend of mine is getting a 370 for his rig so if putting two incompatible card in Crossfire fails POST or makes the BIOS not recognize the cards I can just test it with his.
 
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jollypirate

jollypirate

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They are both pitcarin cores are they not?
HD7870 andR9 270X are the same GPU, the HD7850 and R7 370 are the same GPU
AMD does support crossfire between the HD7850 and HD7870, and they support crossfire between the 200 and 300 series so it should work
All of the forum topics i found on this are saying that it should work
 
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Rogue Leader

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The only one that has the same chipset is as I said the unavailable R9 370. There are no other 300 series cards that are compatible.

If you did it anyway it should still POST, but it won't activate once you try to enable it in Windows.
 
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Rogue Leader

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Only one is Pitcairn and they are not the same GPU

The R7 370 has a Trinidad Pro which is Pitcairn, the R9 270X is a Curacao XT. They are different, it won't work.
 
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Kari

Kari

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umm afaik pitcairn was renamed twice, so pitcairn, curacao and trinidad are the same chip, the only difference is slightly different clockspeeds but thats it. So crossfiring should work between 270x and r9 370 (the r7 370 is slightly crippled variant of the r9 370 but based on the same chip nevertheless)

http://www.techpowerup.com/gpudb/339/radeon-hd-7870-ghz-edition.html

http://www.techpowerup.com/gpudb/2466/radeon-r9-270x.html

http://www.techpowerup.com/gpudb/2726/radeon-r9-370.html (says it is China exclusive, thats a bummer)
http://www.techpowerup.com/gpudb/2645/radeon-r7-370.html

if you go thru them all you'll notice the transistor count, the die size and core configs match (on the fully enabled chips)...

Still pairing a fully enabled chip with a crippled one isn't an ideal situation
 
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Mr Kagouris

Mr Kagouris

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Honestly I'm just looking for a second card to push me over the 60FPS mark in most games. Already going around 45 usually with my current card. Also any card I get I will overclock, even on stock volts if need be.
 
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need4speeds

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The HD-7850, 265, some 270's, 370 all have 1024 shaders.

The HD-7870, some 270's, 270X all have 1248 shaders.

http://support.amd.com/en-us/kb-articles/Pages/Crossfire-Chart.aspx

It look's like amd doesn't claim it's supported. I did seen it posted before that the HD-7870 and 270x crossfires together.
The 370 is not a "Pitcairn" it's a updated one, so it likely wont work with any of the older ones.

Do some searches to find out.

Selling the card and buying a faster one might be easier.

http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=100007709%20600536049%20600536050%204814%20600566291%20600565674%20601119284&IsNodeId=1&bop=And&Order=PRICE&PageSize=30



 
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J

Jerimon

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Since it is established that a regular 370 would lose some individual performance, I'm just going to ask a simple question for a real world scenario:

I already have an MSI 2G R9 270X Gaming (OC Edition) graphics card in my desktop. I have planned for CS since realizing the possibility from the motherboard manual. I have upgraded it to accommodate such an addition, and I know I want to get a brand-new 300 series card to supplement the power my existing card has.
My question is this: [strike]Should I take a performance hit and buy an R7 370, which is cheaply and readily available, OR[/strike]
Buy a true R9 370X from ebay (new, just at a high price and from few sellers), and eat the amount I pay for shipping, OR
Wait until AMD eventually (and hopefully) releases the R9 370X in America.

I have decided that, since this will be the last card I can crossfire with my old card (per the card's specs), I may as well make it better than my existing card, so there will be no performance drop (just double the horsepower).

The specs of the card I'm looking at: http://www.techpowerup.com/gpudb/b3460/sapphire-vapor-x-r9-370x-oc.html
 
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