GTX 460 SLI Framerates

Recently picked up two GTX 460's and I am running them in SLI mode together. However, I am not getting very good framerates. The game I play is BF3, my framerates hang around 20% on ultra :(. Which is quite a bit less than expected. This is my first SLI rig and I am not sure if I did everything right, I have SLI enabled in Nvidia control panel and have installed the 285.62 Drivers. Do i need anything else? Also, when I run a GPU stress test I have It says my second GPU is only running at like 30%?

Intel i5 2300 Overclocked to 3.2Ghz
8GB DDR3 1600 RAM
Gigabyte z68 Motherboard
2 GTX 460's in SLI - (One is made by Zotac, the other by PNY. They are the same size memory, clock speeds, and everything else. Perhaps the BIOS image on the cards has to match exactly?)

400GB Seagate Barriucuda HDD
Some random ASUS sound card from Micro Center <--that place is awesome.
Antec Earthwatts 650w PSU
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  1. Best answer
    Make sure both of them are in either a x16 or a x8 slot, x4 will drop frame rates
  2. The first is in a x16, the second is in an 8x
  3. Best answer selected by Wiiings12.
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