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H3nrik V!
Joined: 15 Apr 2014
Posts: 1246
Location: Denmark
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 Posted: Tue Dec 01, 2020 6:46 am Post subject: Pentium 4 505/505J/506 - difference being? |
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According to my own sheet, the difference between 505/505J and 506 should be that 506 is 64-bit capable, but it seems that at least SL85U has 64-bit capabilities? Is the EMT64 the difference between 505 and 505J? I thought it was a question of stepping and TDP?
So, what is the actual answer? |
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Mixeur
Joined: 06 Jan 2005
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Location: Sochaux, France
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H3nrik V!
Joined: 15 Apr 2014
Posts: 1246
Location: Denmark
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| Posted: Tue Dec 01, 2020 7:01 am Post subject: |
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| Mixeur wrote: | | 505 & 505J, or any non-J vs J difference is the Execute Disable bit feature. |
Oh, that makes sense.
But are 505 then EMT64 or not?  According to your website, they're not .. |
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Mixeur
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Mixeur
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xhoba
Joined: 20 Apr 2009
Posts: 4596
Location: Picardie, France
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| Posted: Tue Dec 01, 2020 10:25 am Post subject: |
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| Mixeur wrote: | | Xhoba has a SL85U and he tested it. So maybe he could confirm whether it has EM64T or not, but for me this is an error in CPU-World database. |
I confirm that my SL85U does'nt support EM64T.
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H3nrik V!
Joined: 15 Apr 2014
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Location: Denmark
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H3nrik V!
Joined: 15 Apr 2014
Posts: 1246
Location: Denmark
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| Posted: Wed Dec 02, 2020 2:23 am Post subject: |
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| Mixeur wrote: |
Please note that all 5x1 or 5x6 have Execute Disable Bit, despite the lack of J in the number. |
Yeah, and they also support EMT64, right?
What about all 6xx series - they're EMT64 with XD as well? |
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xhoba
Joined: 20 Apr 2009
Posts: 4596
Location: Picardie, France
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| Posted: Wed Dec 02, 2020 8:44 am Post subject: |
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| H3nrik V! wrote: | | Mixeur wrote: |
Please note that all 5x1 or 5x6 have Execute Disable Bit, despite the lack of J in the number. |
Yeah, and they also support EMT64, right?
What about all 6xx series - they're EMT64 with XD as well? |
Yes, every 6xx P4 support EMT64 and XD. I took as examples a 630 and a 631 I tested a couple of months ago.
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H3nrik V!
Joined: 15 Apr 2014
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Location: Denmark
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| Posted: Wed Dec 02, 2020 9:24 am Post subject: |
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Oh, and now 631? What kind of sorcery is that now? 
Oh, it's just my sheet, that doesn't go past Prescott, apparently |
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Mixeur
Joined: 06 Jan 2005
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Mixeur
Joined: 06 Jan 2005
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Location: Sochaux, France
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H3nrik V!
Joined: 15 Apr 2014
Posts: 1246
Location: Denmark
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| Posted: Thu Dec 03, 2020 12:52 am Post subject: |
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| Mixeur wrote: | | I made an article about the P4 naming convention, but it is in french only. Need to translate it in english. |
It's actually pretty good with Google Translate |
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