Just curious about this. I heard talk about how much ram FSX can use, but what if you are using Addons such as Weather engines and others, I was just curious if adding in more ram would be a benefit at all.Any help would be much appreciated. I am currently runnin Win 7.RegardsBob G

What are your system specs (complete)?

If you are on a 64bit system - go for the RAM. It will help if you have a lot of addons or programs like ASA or Air Hauler.

When I run ASA/FSX/FSCommander/Utopia the most memory used I've seen is 2.2GB out of 4GB. In fact, I've turned my paging off. Everything from disk gets cached, so when I start FSX the second time the harddrive hardly blinks at all.Of course, you could bust your machine turning off the paging file, so decide at your own risk.However, you could find out how much memory is needed:Run everything you like you would. Start perfmon running. Show only "committed bytes" under memory (I think that's the actual memory being used). Leave it running during your sim session. Look at the max when your done. See how much you actually use.I'm not 100% certain that committed bytes is right, however it certianly seems to fit what's going on. Unfortunately there's no "actual memory used" statistic. This is because modern OS's have really confusing ways of counting memory.Oh yeah I'm XP64.

What are your system specs (complete)?

Hi,Not sure why system specs would be important other than the OS which is Win 7.But here you go:QX9650 OC-3.75 - GTX285 , and of course 4 gig of ram.RegardsBob

Just curious about this. I heard talk about how much ram FSX can use, but what if you are using Addons such as Weather engines and others, I was just curious if adding in more ram would be a benefit at all.Any help would be much appreciated. I am currently runnin Win 7.RegardsBob G

YES!

Probably not. In fact, you may actually decrease performance, because adding in a second pair of DIMMs will cause the hardware memory controller to slow down the RAM timings. And if the system is clocked up, getting the voltage/timings right with all the banks populated can become a real chinese fire drill. Your overclock settings with two DIMMs will not necessarily work with four.I've never seen actual memory usage much above 3 gig on my i7/Vista64 machine with it loaded to the gills--FSX, complex plane, scenery, ASA, radar contact, etc.My two cents: save the money for something else.RegardsBob ScottColonel, USAF (ret)ATP IMEL Gulfstream II-III-IV-VColorado Springs, CO

Probably not. In fact, you may actually decrease performance, because adding in a second pair of DIMMs will cause the hardware memory controller to slow down the RAM timings. And if the system is clocked up, getting the voltage/timings right with all the banks populated can become a real chinese fire drill. Your overclock settings with two DIMMs will not necessarily work with four.I've never seen actual memory usage much above 3 gig on my i7/Vista64 machine with it loaded to the gills--FSX, complex plane, scenery, ASA, radar contact, etc.My two cents: save the money for something else.RegardsBob ScottColonel, USAF (ret)ATP IMEL Gulfstream II-III-IV-VColorado Springs, CO

Hi Bob,Yes, I did find out the same thing. Voltage, timings etc would most likely be affected. My memory controller was my biggest obstacle during overclock, and my MB is not the best one for OC activities (-: I am convinced the 4 gig is plenty.Thank you very much for chiming in!!RegardsBob G

Probably not. In fact, you may actually decrease performance, because adding in a second pair of DIMMs will cause the hardware memory controller to slow down the RAM timings. And if the system is clocked up, getting the voltage/timings right with all the banks populated can become a real chinese fire drill. Your overclock settings with two DIMMs will not necessarily work with four.I've never seen actual memory usage much above 3 gig on my i7/Vista64 machine with it loaded to the gills--FSX, complex plane, scenery, ASA, radar contact, etc.My two cents: save the money for something else.RegardsBob ScottColonel, USAF (ret)ATP IMEL Gulfstream II-III-IV-VColorado Springs, CO

I guess it depends on the system. I have no problems and I'm running 12 gigs of RAM. I had 6 gigs. I added 6 more gigs without any negative side effects. I heard that Win 7 was more memory efficient.

More banks of RAM puts more stress on the memory controller which requires more voltage to operate correctly and usually leads to a lower maximum clock speed for RAM, FSB/HTT/QPI/DMI and CPU.

More banks of RAM puts more stress on the memory controller which requires more voltage to operate correctly and usually leads to a lower maximum clock speed for RAM, FSB/HTT/QPI/DMI and CPU.

Hi, Yes I could not figure out why my Northbridge was heating up so much even with a light increase in FSB. It was my memory controller and 8 gigs of ram. I took out the other 4 gig and presto, my temps drop 10 degress. I had talked to the tech guy at Corsair, and that is exactly what he said. So I had to lower my FSB and go with a higher cpu multiplier. RegardsBob