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Pentium D 830 , unclarities

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September 23, 2005 12:40:09 PM

Hi again ,

I am looking at the Pentium D 830 (EM64T 32bit/64bit)

Now please someone explain to me the EM64T meaning,
And why do they say [32bit/64bit SmithField) , Is it 32 bit or 64 bit , someone should make up ones mind ,

Thanks for the asvise
September 23, 2005 12:48:34 PM

it is a 32 bit CPU with extensions that allow it to run in a 64 bit processing mode.
September 23, 2005 1:39:04 PM

What about the Pentium 640 , is that a 32 bit processor too??? And will there come a 64bit Pentium D 830 ??

thank you
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September 23, 2005 10:18:13 PM

Is holylancer your friend?

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September 24, 2005 12:41:53 AM

XD pwned

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September 24, 2005 1:01:15 AM

All the x86 CPU's with 64-bit capability are based on 32-bit cores with 64-bit extensions.

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September 24, 2005 2:12:19 AM

especially the ones that took intel less than a month to come up with.

The know-most-of-it-all formally known as BOBSHACK
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September 24, 2005 2:17:05 AM

lol hey hey at least i know that current gen emt64 are missing 2 sets of instructions that makes it 62but instead of 64 bit.... i don't think i could got that wrong after spending all this time getting thrashed by you ppl lol.

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September 24, 2005 3:06:36 AM

Quote:
missing 2 sets of instructions that makes it 62but instead of 64 bit....

Uh, that's a joke. <font color=red>EM64T</font color=red> isn't 2 bits less than AMD64, because it's missing 2 instruction sets. In fact, it would be more correct to call them 40something bit, since they are only capable of using that type of memory addressing.
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September 24, 2005 7:18:04 PM

ok then so my info was kinda off (most ppl here seems to say that lol) so they are missing 2 sets, but it affects more than just 2 bits, making it not 64 bit but like 40 some bit? ok i won;t get that wrong again. but ya gota give me some credits right? i mean i got the missing 2 sets of instructions part right.

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September 25, 2005 5:11:26 AM

Actually, you still have it wrong. Bothe the Amd64, and the EM64T are only able to address memory to 40something bit addresses. Not having those two instruction sets affects how the intel chip deals with certain operations, and does not affect how much memory can be addressed.
Not that this matters all that much, or I would do a better job of keeping it straight myself. I just didn't want you to think that there we 1 instruction set per bit.
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September 25, 2005 5:27:42 AM

ah i see, so it is just missing 2 set of instructions, with unknown (or too diffcult to explain) effects on 64 bit operations that is somewhat bad?

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September 25, 2005 5:45:36 AM

When it comes to binary, there are only 10 kinds of people. Those who understand it, and those who dont. That's a 2 bit joke.
September 25, 2005 7:36:07 AM

I thought the prescott simply sucked @ 64bit because the ALU's go from 32bit to 16bit again which completely defeated the purpose of upgrading from northwood to prescott in the first place.

The know-most-of-it-all formally known as BOBSHACK
September 26, 2005 3:23:38 AM

I hadn't heard that.
The one that I found funny was the claim from Performance Test that EM64T outperformed A64.
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September 26, 2005 3:51:58 AM

is it form THG?

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September 26, 2005 4:20:03 AM

No, it's a testing prog. It's like a cross between Sandra, and 3D mark. Not that good, though.
September 26, 2005 4:16:56 PM

Quote:
ah i see, so it is just missing 2 set of instructions, with unknown (or too diffcult to explain) effects on 64 bit operations that is somewhat bad?

Actually, that's not entirely true either now, since Intel's lastst cores with EMT64 will now have those previously missing two operations. (LAHF and SAHF are used for storing and recalling status flags in the AH register.) So basically only the early Intel adopters are screwed. Intel johny-come-latelies should now have 100% compatability with AMD64.

Just look for Intel's new G-1 core products. Not only does the core upgrade add these two instructions, but it also is compliant with European Reduction of Hazardous Substances (RoHS) regulations.<pre><font color=orange> ∩_∩
Ω Ω
(=¥=)</font color=orange> - Cedrik says that Intel got the lead out, so to speak.<font color=orange>
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September 26, 2005 4:28:39 PM

Quote:
When it comes to binary, there are only 10 kinds of people. Those who understand it, and those who dont. That's a 2 bit joke.

<A HREF="http://www.cameronwilliamson.com/nutshell.mp3" target="_new">"Like a scrotum, there it is in a nutshell."</A>
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September 26, 2005 11:34:59 PM

AFAIK, G1's release date is Nov.1 Have you heard something else?
September 26, 2005 11:47:16 PM

Especially when seeing the fish I caught ... :evil: 

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September 27, 2005 1:51:32 AM

is it two headed? one of my teachers cauht one!

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September 29, 2005 1:25:05 PM

Quote:
AFAIK, G1's release date is Nov.1 Have you heard something else?

Actually, yes, and not not something better. :\

I heard more like 14 Nov for the P4, 28 Nov for the Xeon, and 2 Dec for the Celeron. Of course those are when they're meant to hit the market in quantity. Sampling is supposed to be starting in mid Oct, if not earlier.

Bummer to all those who went right out and got the first EMT64s from Intel, but then early adopters <i>are</i> the risk takers. Personally, I almost never buy anything until it's been revised enough to work out the kinks. :o 
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September 29, 2005 1:30:33 PM

Quote:
Does that mean green hippies like me have to buy an Intel from now on?

That depends on how you feel about global warming. ;) 

(Although, from a practical standpoint, it actually is a very serious subject if you know that your electricity is generated primarily by coal power plants.)

I wonder how long it'll take AMD to be more green too. But it definately is a nice thing to see big companies like that taking that kind of thing a little more seriously for a change. Maybe one day PC components won't even be toxic anymore. Here's looking towards a greener future.

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