I am planning to order a new processor and motherboard tonight.I am currently running an AMD 64 3400+ (Socket 754) and a Ausus motherboard.I want to move up to an AMD 64 4000+ (Socket 939) to take advantage of the 128 bit memory controller and the 1 meg L2 Cache. I plan to reuse my 6800GT and 1 meg of OCZ PCc3200 Ram.When I went to order tonight, I noticed there are two AMD 4000s. There is a SledgeHammer and a ClawHammer (cores).Anybody have any info how these compare, or work in FS9? Dennis Mitchell

wanna pass me that 3400? lol.. Which mobo are you comming off of btw?

I am taking the entire CPU and Motherboard out of the Flight Sim Machine, but I am reusing in in my Second machine that I use for Weather, Charting, Traffic Separation, ...The MB was an Asus K8v Deluxe (754) and I am getting the Asus K8V Deluxe with the 939 Socket. These Boards have the VIA KT800 Chipset, and a Promise Raid Controller. Since I have all my stuff on the RAID, I am hoping to slide this MB in and the RAID not have to be re-striped. I will probably have to trick it by setting up the RAID in BIOS and then removing power before it writes to disk.I have done this once before, as long as the controller is the same and the settings are the same. It is risky, but worse case is I get to reinstall everthing and get a fresh build.Sorry I don't have one to sell you.To answer my own question, The ClawHammer was the code name for the Opteron processor aimed at servers. (THat is why it is only OEM). They used the same core for the FX series, which too, was aimed at the server market. Yes it kicks butt in games, but is very expensive and you are getting a lot of features that aren't optimum for gaming, especially FS9. I went with the SledgeHammer Core (AMD 64 4000+ with 1 meg of L2 Cache and two 64 memory controller (128 bit). It has hypertransport to help with moving stuff on and off the arithmetic processor (unlike the 3400+), but it still won't play Combat Flight Sim 3. That is a little joke for the ones of you who have like me, spent ours trying to get CFS3 to run without the stutters. My FS9 runs smooth but I think CFS3 was simply flawed in design.DennisDennis

Hi Dennis, the Sledgehammer should be the socket 940 CPU (Opteron). The Clawhammer should be 4000 socket 939 CPU. I fear you got things mixed up and of course could be terribly mistaken. Good luck and kind regards Jaap

The sledge hammer is for servers. The Clawhammer is the 754 CPU with 1 mb cache aimed for personal computers. It was later replaced by the Newcastle coreI don