I don't want to sidetrack this thread, but I want to post a counter-example to this post:
The RAM-Drive is faster, without a doubt. I don't have enough RAM to move the entire Arma2 folder, but even with only the highly used PBOs it will undoubtably be an improvement for performance. However, I'm very happy with my SSD performance now so it won't be a high priority. Very interesting though.
I chased the dream of ultra-high-resolution Arma2 with ultra-high-performance... and you know what it cost me? Another 8800gtx (eBay for $65) and an SSD ($320 + tax). Totally worth it.
Last edited by 1longtime; Oct 20 2009 at 18:55.
I think it all depends. I am sure that - compared to a mechanical hard disk - a modern SSD is a huge improvement. If you look at the I/O results using a RAMdrive, though, you will see that ArmA 2 can generate a load of more than 1000 IOPS (I will post some results later). Now have a look at SSD performance:
Random I/O maxes out at 300-400 IOPS with these SSDs. So, while 98% of the time ArmA 2 will work in the range of what a SSD can deliver, it is those nasty 2% of times where they don't that can create visible stutter.
Here's a (slow) RAMdisk for comparison:
And here a Hard Disk:
Basically, as a rule of thumb, in random read a RAMdisk is 100x, a SDD is 10x faster than a HDD.
But at the end you are quite right, there is a certain level of perfectionism at work here
Last edited by qwertz; Dec 31 2009 at 18:36.
My pressing questions is will a 4GB RAM disk work or I have to put the ENTIRE game 8GB onto a RAM disk to see performance. 16 GB of RAM with 4X4GB config cost the same as a smaller capacity SSD.
Just run qwertz test with Process Monitor to help decide what you would prefer for your own gaming scenarios.
I have it currently down to 3gb of files and the spare 1gb as a pagefile.
That was taken by analysing one of qwertz earlier tests then deciding what would make the game smooth and sorting out things that wouldn't effect graphical performance like sound files etc.
I do recommend putting the UI files in there though as map and menu loading is a treat now.
I've now moved whole my ArmA 2 installation folder onto a ram drive and logged a couple of minutes flying in a Harrier over Chernagorsk.
This is the analysis of it using your excelent tool:
Still get some stutter though even if it's better than without a ram drive.
How about having people post a screenshot of their ingame video settings.
After all this should have a visible and noticeable effect no matter what.