Intel Dual Core E2140 75 bucks. http://www.newegg.com/Product/Produ... Even at stock speed this processor can outperform the P4 530 nicely. Not to mention with your board you could overclock the E2140 to 3ghz on stock cooled heatsink and fan stable and still pretty cool which will perform almost as good as $280 dollar Core 2 Duo E6850 at 3ghz.

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1. X64 is not the same thing as Intels EMT64 2. Pentium 4 cpu's werent offered with EMT64 until the Pentium D cpu I believe, could be wrong. 3. X64 and EMT64 are not "true" 64-bit technologies. They are hack-job 64bit implementations at best. You will most likely notice a decrease in performance when switching to an x64, or EMT64 CPU. But it could be fun to play with just to see. I know Sandra reports a percent or so in decrease in performance. The closest thing intel has to a 64 bit platform is the itanium line of computers. But even than the itanium has only 36 bit memory addressing(could be wrong), not a true 64bit CPU or platform like the PowerPC series, POWER series, Sparc, DEC alpha, etc. Just because a cpu has 1 or 2, 64 bit registers(really REALLY crappy ones at that) does NOT make it a true 64 bit CPU or platform.

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Well i'm going to correct you on a few things. There is no such thing as EMT64 it's EM64T. Second, the Pentuim 4 6xx were EM64T. http://www.intel.com/products/proce... Third, Intel's EM64T uses the same 64bit instructions as AMD's 64bit instructions because Microsoft didn't want to use two diff mainstream 64bit instructions for their mainstream OS's, so they went with AMD's considering AMD was the first to come out with 64bit instructions for mainstream users. And yes, it's true 64bit. In Fact Athlon 64's are better suited in 64bit mode then are in 32bit mode, because their native bit structure is 64bit that is backwards compatible with 32bit and not the other way around.

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So would you consider a 8086 a 64bit cpu if it had 64-bit registers??? Because that is pretty much what intel did and only added 8 64bit registers that are not even dedicated to any one task. A true 64 bit cpu needs to be of a 64bit design from scratch(itanium for example) contain ALOT more than 8, 64bit registers(an ultrasparc for example has 144 in total) needs a 64 bit address bus(the core2 addresses in 36bits), a 64bit data bus, and needs to process info twice as fast as a 32bit CPU at the same speed. A first gen PowerPC 601 is more a 64bit design than a core2 CPU. This is why 64bit computing is actually slower on a x86 cpu than 32bit. 8 stinking registers that were hacked into 64bits. It's like buying a crappy yogo automobile(32bit) and sticking a trailer(64bit) on it and expecting it to go faster, you lose speed and wonder why(insert mystified intel engineer picture here). This is of course "MY" personal opinion and hatred for what AMD/Intel considers 64bit and have done. The industry needs to lose x86 altogether and except a new design, which will never happen. Anyways.. it is a TERRIBLE attempt at 64bit computing and hopefully one which goes bye bye soon. But yeah I thought some of the P4's had EM64T tech. just could'nt remember which ones. And yes, AMD's attempt (64bit half ass design with backwards compatibility to 32bits) is far better than Intel's design which works in reverse, a 32bit design that is 64bit compatible.

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