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Subject: Re: Computer with 8 Ghz and 8 GB RAM

Author: Yen Art Tham

Date: 10:34:07 12/18/02

Go up one level in this thread


On December 18, 2002 at 13:06:08, Robert Hyatt wrote:

>On December 18, 2002 at 11:16:42, Matt Taylor wrote:
>
>>On December 18, 2002 at 10:28:22, Pavel Blokhine wrote:
>>
>>>On December 18, 2002 at 10:25:04, Tony Werten wrote:
>>>
>>>>On December 18, 2002 at 10:08:28, Pavel Blokhine wrote:
>>>>
>>>>>On December 18, 2002 at 09:51:05, Tony Werten wrote:
>>>>>
>>>>>>On December 18, 2002 at 09:39:45, Pavel Blokhine wrote:
>>>>>>
>>>>>>>I guess that this computer will humble the Dual xeon 2.8 Ghz.
>>>>>>
>>>>>>I'm quite sure it won't and will be less than 50% faster.
>>>>>>
>>>>>>Tony
>>>>>>
>>>>>>>
>>>>>>>No Sub	Description	Quantity
>>>>>>>	XeonMP 2.0Ghz 2Meg L3/Cache 400Mhz FSB	4
>>>>>>>	Glacier 8 Quad 7U XeonMP 8/64bit PCI 100/1000 Video D/U160	1
>>>>>>>	DIMM DDR PC2100 ECC 128 x 72 (1GB) Registered	8
>>>>>>>	"Seagate 146GB HDD Ultra320 SCA 10,000 RPM 1"" LP"	1
>>>>>>>	CD-ROM / DVD Drive 48X CD/16X DVD AC-3 Toshiba IDE	1
>>>>>>>	Modem SupraMax Voice 56K V90 PCI (Intel Only)	1
>>>>>>>	SCSI Terminator Ultra/160 LVD F/W/U 68 Pin INT	1
>>>>>>>	"Cable SCSI 68PIN 5 Conn. LVD TNF INT. 50"""	1
>>>>>>>	Keyboard Microsoft Natural	1
>>>>>>>	Microsoft Intellimouse PS/2 2-Button W/Scroll	1
>>>>>>>	Windows 2000 Professional  Operating System	1
>>>>>>>	Full & Mid & Rack Super Blue Poly End Caps	1
>>>>>>>	Warranty: 2 Years Parts & Labor	1
>>>>>>>	"Viewsonic LCD Display 20"" VP201mb 1600X1280 Black"	1
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>We will be happy to supply any additional information you may need.  Every
>>>>>>>order			Product Total	"$30,629.50 "
>>>>>>>receives our prompt and careful attention.  This quotation is confidential
>>>>>>>and			Discount	$0.00
>>>>>>>subject to change without notice after 01/16/2003.  This quotation
>>>>>>>supersedes			Freight	$50.00
>>>>>>>any verbal quotation(s) made prior to the date above.  Changes must be made
>>>>>>>in			Sales Tax	$0.00
>>>>>>>writing.  Certain items may be substituted with equivalent or higher value
>>>>>>>items			Quote Total	"$30,679.50 "
>>>>>>>if necessary.  All complete systems have a -30- day money-back guarantee.  See
>>>>>>>Aspen Systems website for complete warranty information:
>>>>>>>http://www.aspsys.com/warranty.html
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>		Authorized by		Date
>>>>>
>>>>>
>>>>>And why would you say that? Can you give us an explanation?
>>>>
>>>>A dual 2.8 is equivelent to 2.8+(0.7*2.8)=4.76 Ghz
>>>>
>>>>A quad 2.0 is equivelent to 2.0+(0.7*2.0*3)=6.2 Ghz
>>>>
>>>>That's 30% increase.
>>>>
>>>>Tony
>>>
>>>
>>>Okay, but have you taken in consideration the 8 GB of RAM versus the usual 1 GB
>>>of RAM that a Dual Xeon 2.8 GHZ has?
>
>First, a dual xeon can have as much ram as a quad xeon.  However, most
>motherboards don't have enough memory slots as they are made more compact,
>while the quad boards end up with a daughter-board that holds the memory,
>typically up to 16 modules.
>
>But as 1gb modules are available today, the Dell I have could go to 6 gigs
>with no problem.
>
>>
>>The ram won't make a huge difference either way. It would if your chess program
>>started swapping, but if it was swapping, processor speed wouldn't make any
>>difference.
>
>Depending on the speed of the program, the size of ram can affect search speed
>by maybe a factor of 2.0 in the middlegame.  In the endgame it will be more
>pronounced.  But since dual xeons can go to whatever memory limit the MB
>manufacturers choose to design for, this is not very significant.


So, what should be the minimum amount of ram one should have
to run a fast searcher (at blitz and tournament time controls)
 on a dual 2.8 xeon?

yat


>
>
>
>
>>
>>A $1800 AthlonMP 2400 system can almost tie the dual-Xeon 2.8 GHz. It would be
>>more cost-effective just to build a NUMA system out of 4 such nodes. You'd
>>probably get about the same speed-up.
>>
>>-Matt



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