I looked up your motherboards manual, and looked at your RAM configuration. There is one thing you could do that might (not guaranteed) improve performance by just a tiny bit.
Your current memory module config is:
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Slot #1 Module Hyundai Electronics - 1024 MB (4300)
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Slot #2 Module PNY Electronics - 2048 MB (6400)
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Slot #3 Module Hyundai Electronics - 512 MB (5300)
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Slot #4 Module Hyundai Electronics - 512 MB (5300)
Your Slot #1 module is the slowest one, and your motherboard config looks like it pairs Slot #1 and #2 into channel #1, and Slot #3 and #4 into channel #2 in the manual (
http://support.gatew...006254Rmv.shtml). Since the slowest module in channel #1 is PC2-4300, and is paired with the fastest module (PC2-6400), both of them runs at the speed of the slowest module. If you re-arrange them, you may see a small increase in performance, although if you don't know how to dissect a computer, you should
not attempt to do this. I would try to set the memory modules up this way:
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Slot #1 Module Hyundai Electronics - 512 MB (5300)
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Slot #2 Module Hyundai Electronics - 512 MB (5300)
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Slot #3 Module PNY Electronics - 2048 MB (6400)
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Slot #4 Module Hyundai Electronics - 1024 MB (4300)
This will set channel #1 to run at a slightly faster clock speed, but depending on how your CPU utilize then channels, it may not do anything at all. If you can find someone with spare computer parts that have DDR2 RAM, it is the Hyundai Electronics - 1024MB that is the one that slows the RAM down as it is the slowest running at PC-4300 speeds. The best would be to find two matching modules both running at PC2-6400 speeds, but since DDR2 RAM is widely phased out, that may be tricky.
That is about all I can recommend client-side, however there is one thing that can be done server-side that also may improve your FPS a tiny bit. In the server.properties file, there is a line called "view-distance=x". If you get the server owner/operator to lower this number, the number of chunks around each player that logs on will be reduced. This will not affect chunk-loaders, but will make players that can run on far view-distance or even extreme view-distance if they run Optifine to not see as far as they used to, as the server won't send data about chunks beyond the view-distance limit set in the server.properties file.
Again I must insist that you do not attempt to change your RAM configuration unless you know what you're doing, I take no responsibility for damaged hardware.