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Subject: Re: multi-processor hardware question

Author: Aaron Gordon

Date: 11:11:43 06/02/03

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On June 02, 2003 at 13:37:26, Peter Stayne wrote:

>Speaking of this, have you mastered the mysteries of the thoroughbred/barton
>codes? I know the guys at Overclockers.com/.co.uk have been working die hard on
>this for a while now. how do you tell the difference between a tbred A and a
>Tbred B 1700+? etc...

Tbred-B 1700+ will be a JIUHB stepping. There are two flavors of the JIUHB
however. One is a DUT3C and the other is a DLT3C. Those are hard to find (DLT),
however, and are expensive. The Tbred-A's will be something like, "AIRGA",
ending with an A (TbredA).

>On June 02, 2003 at 09:47:43, Aaron Gordon wrote:
>
>>On June 02, 2003 at 00:06:43, margolies,marc wrote:
>>
>>>thank you for your offer and info. the amd 1700 is a good cheap chip that I use
>>>now.
>>>I don't know if chess engines should be overclocked-- I am still thinking about
>>>this particularly after some of Doc Hyatt's postings regarding the matter.
>>>of course that still does not settle my mobo issue.
>>>-marc
>>
>>Hyatt is rather inexperienced at overclocking. I'm sure he knows about the
>>registers, ASM programming & whatnot but as far as his hands on overclocking
>>experience, thats next to nil. I however have been doing it most of my life. I
>>test the chips thoroughly and provide headroom to further ensure stability. I've
>>sold many pretested overclocked chips, I don't know of a single person that has
>>had a problem with the chip being unstable. That is a fact. Soon I will be
>>pretesting modified Athlon XP to MP chips.
>>
>>All AMD does it produce the fastest cores available (same for Intel). They send
>>the cores to malaysia to and then they're assembled onto the OPGA packaging.
>>These are all the same, and are uncut. They then use a laser to cut the bridges
>>and make the chip whatever they want. The chip right next to a 1700+ could have
>>been a 3200+. It all depends on how the market is going. If 1700+'s are flying
>>off the shelves (and they are), AMD, like they're doing now, will produce more.
>>These happen to have ~2.4GHz cores.
>>
>>>On June 01, 2003 at 20:39:29, Aaron Gordon wrote:
>>>
>>>>On June 01, 2003 at 17:35:51, margolies,marc wrote:
>>>>
>>>>>hi all.
>>>>>as there are so many good deep engines out now...
>>>>>i am serioulsy considering assembling a dual processor setup for chess
>>>>>background analysis (on a home lan) and playing (competitively?)
>>>>>
>>>>>What I need from you guys are mobo recommendations uopn which to build a system.
>>>>>i have heard some of you write about an "iwill" brand board.
>>>>>of course I know the specs of the tyan and aopen boards already.
>>>>>Does someone here know if there are any opteron boards floating in the market
>>>>>place yet? ( or is this maximum overkill?)
>>>>>
>>>>>So, I'd appreciate any knowledge mainboard archeitecture recommendations.
>>>>>thanks- marc
>>>>
>>>>I'm not sure about motherboards now days for Athlon systems.. the iWill MPX2 was
>>>>the best one IMO. Now they don't make it any more, which is a shame because it
>>>>was awesome. About processors... I can take special Athlon XP 1700+ chips
>>>>(latest core) and modify them physically to run 2266MHz (2800+ is 2250MHz) on a
>>>>regular 133fsb motherboard and they'll run in SMP.
>>>>
>>>>There are no catches, you just pop in the processor and the motherboard will
>>>>detect it as an Athlon MP 2800+. You don't have to do anything special. The good
>>>>thing is they're extremely cheap AND faster than a dual Xeon 3.06. An added
>>>>bonus is you can pick up a dual Athlon board and two of these modified 2800+ MP
>>>>chips for less than the price of a single 3.06GHz Xeon.
>>>>
>>>>All chips will be fully tested to be completely stable. It's not really
>>>>necessary on the latst cores because all AMD is doing is dropping ~2.4GHz cores
>>>>onto an OPGA package and changing the 'settings' on the chip, marking it to
>>>>whatever the market demands, and selling it. All I'm doing is setting it back to
>>>>what it really is. :)
>>>>
>>>>Also, if requested, I could provide Athlon MP 3200+ to 3400+ chips (2.4-2.53GHz)
>>>>chips, these would technically be considered 'overclocked' and would run at a
>>>>slightly higher voltage than normal.. thus producing a bit of heat (still less
>>>>than a Xeon 3.06, however). I will still test for complete stability of course.



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