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Crossfire with Asus M5A97 LE R2.0

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a b Ĉ ASUS
a c 114 V Motherboard
June 28, 2013 9:07:12 PM

So I have a XFX 7750 2 gb ddr3 and want to add a second identical card. The only problem is I know my 700 psu can handle it, and I know my board has 2 PCI x16 slots. The concern comes into the second pci x16 slot, it says it runs in X4 mode which, I assume, mean that the crossfire wont offer the performance boost I am looking for. Can someone tell me what kind of boost I would get in games like Starcraft 2 where im getting 30-35 max fps on ultra settings? Would it even be worth the 130 upgrade to add a second card or wait to get a larger card later. As only being in High school I am always on a budget here.

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a c 808 Ĉ ASUS
a c 1540 V Motherboard
June 28, 2013 9:12:48 PM

I think I'd put the money towards a newer card
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a b Ĉ ASUS
a c 134 V Motherboard
June 28, 2013 9:26:52 PM

The 2nd PCi-E X16 slot on that motherboard support x4 bandwidth only, meaning the crossfire performance on that motherboard will be beyond terrible, with 2 cards running at pci-e x4 bandwidth. It's best to get a stronger card instead. Plus, some games including Starcraft 2 don't support dual VGA setups well, so there's a big chance that you'll get a FPS drop instead of increase for running 2 HD7770.
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a b Ĉ ASUS
a c 114 V Motherboard
June 28, 2013 9:35:41 PM

Thats what I was thinking, Its just a matter of getting the money to upgrade the gpu farther. The main issue is money so I was trying to get more performance for cheaper.
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a c 808 Ĉ ASUS
a c 1540 V Motherboard
June 28, 2013 9:48:14 PM

How high is your CPU OCed? 965 has a lot of OC headroom
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a b Ĉ ASUS
a c 114 V Motherboard
June 28, 2013 9:51:11 PM

My cpu currently is only running at 3.6 GHz mainly due to the jet turbine levels coming from my stock cooler. I am currently working on getting a new cooler before I OC as im running up to 60C with the stock cooler at 6-6.5k rpm. Once I get a new cooler I am planning to OC.
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a b Ĉ ASUS
a c 114 V Motherboard
June 28, 2013 9:52:43 PM

Madn3ss795 said:
The 2nd PCi-E X16 slot on that motherboard support x4 bandwidth only, meaning the crossfire performance on that motherboard will be beyond terrible, with 2 cards running at pci-e x4 bandwidth. It's best to get a stronger card instead. Plus, some games including Starcraft 2 don't support dual VGA setups well, so there's a big chance that you'll get a FPS drop instead of increase for running 2 HD7770.


As for a newer card, I am looking for a card that wont break the bank, but will still last me a long time. I bought this gpu for an old computer and thats why its ddr3. Obviously I cant afford a 7990 but something like the 7950 might be good. I tend to lean to AMD.
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a b Ĉ ASUS
a c 134 V Motherboard
June 28, 2013 9:58:10 PM

If you want a good card with nice OC potential then consider either the HD7850 or HD7870XT.
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a b Ĉ ASUS
a c 114 V Motherboard
June 28, 2013 10:18:06 PM

I think I will plan on the 7950 to last me a bit longer.
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a c 808 Ĉ ASUS
a c 1540 V Motherboard
June 28, 2013 10:22:25 PM

Good idea! And when you get ready to upgrade the rest it will be a good card to start with, I know many that just keep upgrading from current and it works, especially when in school, limited budget etc
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