I had this problem with an old Dell 4700. I found a refurbished processor for $12 that supports NX and x64. Now run W8. Research your processor at Intel/AMD site to determine if there is an upgrade path with same socket. My BIOS handled without any change fine after upgrade.
That CPU's will not fit to socket 478 probably and the numbering in name suggests Prescott core without NX bit function (511J is with NX bit). BTW: On these older mobos, when there is no NX setting, the default behavior is, that function will be ENABLED, if CPU supports it.
I have an Asus P4PE. In the official web site there is a list which is not in the motherboard manual but leaves me in doubt. Due to my post count I cannot post link to Intel web site so you can see.
I have examined the link and you are right, it is only one CPU for socket 478 with NX (XD) bit (unfortunately without HT, but never mind). But it is even x64. Here are the specs:
I think it will work. Your mobo supports 800MHz FSB and HT, but all Intel's CPUs with either 800MHz FSB or HT are for socket 775, so you will run with 533 MHz FSB and SingleCore, but it should be OK. Just check your memory modules, if they run, when FSB is 533MHz. I just received that CPU from friend and put it to my legacy Acer Aspire 1600. (BIOS doesn't have NX bit option and it lets this feature ENABLED.) I was able to install Windows 8 correctly there even with all drivers (x32 - made mainly for XP).
I noticed that in the chart there is 478 socket but it is PPGA. Using CPU-Z I can see my processor is mPGA. I don't understand if the difference lies only in materials or in socket shape too. Can I use PPGA478 on Asus P4PE? Now I'm running 600 FSB (just a bit overclocked).
That Intel 2.80A is "Socket 478 (mPGA478B)" too. There are various descriptions FCPGA, PPGA, mPGA; as long as it is socket 478, you should not care. )
I have been trying to figure out which model of processor to buy since I have the same problem (socket 478 board). As mentioned above, the Pentium 4 Processor 511 will fit socket 478 boards and supports the NX bit. However does anyone have a specific model number to buy one? From what I've read there were multiple versions of the 511 processor and I don't want to buy the wrong one. Correct me if I'm wrong, but I think spec number SL8JX is the only version that is socket 478 and supports the NX bit. It's one of the ones listed on the right side of COR3's link. hXXp://cpu-world.com/sspec/SL/SL8JX.html Are there any others? EDIT: Nvm, since I wasn't a member on the forum before I never saw moderate's picture of the spec from cpu-world. I was right, it is just the SL8JX. Thanks to the guys who found this out though.
Okay, I'll come clean, the main reason I wanted to install Win 8 on my old Athlon XP was to see if 8 supports reading 5.25" floppy disks. I recently had to recover a bunch of files on them from 1992, so I bought a used drive on ebay and stuck it into the Athlon XP desktop I had sitting around. I upgraded to win 7 out of curiosity, and I was able to use the drive and disks perfectly. (It was pretty amusing to have working A: and B: floppy drives along with C:, just like the olden days). I just wanted to upgrade to win 8 to see if it still included support for 5.25" floppy drives, but I can't because of no nx bit. Anyone have a computer with an nx-bit CPU that also has a floppy controller? Remember, you need the old style of cable to use 5.25" drives: hxxp://en.community.dell.com/cfs-file.ashx/__key/communityserver-discussions-components-files/3514/5670.fdd_2D00_cable.jpg
I bought SL7E2 model but seems that my motherboard does not support it. At booting was issued a sound of a siren.
Your board could be shorting to the case. I would take it off the stand offs and make sure it's not touching anything metal and clear the CMOS. My Asus A7N266-VM board did that when I had it moved to another case. A trick I did was this: Remove the CR2032 battery, clear the CMOS and then put the CMOS jumper back to original position, pop the CR2032 battery back in then power the board on with it lifted by the northbridge heatsink or CPU heatsink.
Great, I got my SL8JX processor today and installed it fine, only to find that my BIOS doesn't support NX-bit (I was hoping it would support it without the option). Does anyone know of any cheap motherboards that are known to work?
When booting the Windows 8 setup from DVD/USB, at which point does the CPU features check run (and fail)? Is it in the WinPE part of setup, or in the OS once installed? The reason I'm asking is because I'm thinking of making a combined Windows 7+8 setup with the Windows 8 boot.wim (which I think should work), so it would be great if I could install Windows 7 from that without setup erroring out if the CPU is not supported for Windows 8.