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2005-09-06, 23:23
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#1 |
"Jason Goatcher"
Mar 2005
3×7×167 Posts |
How would you upgrade this?
Assuming your main interest is factoring, how would you upgrade the following? I'm thinking the best thing to do is bump it up to 2Gig of RAM, but the ones I already have don't seem to match up, so I'm thing 3 512MB modules of one or the other:
---------------------- CPU-Z version 1.29 ---------------------- CPUID Output ------------------------------------------------------------------------------ Number of CPUs 1 Name AMD Athlon MP Code name Thoroughbred Specification AMD Athlon(tm) XP 2200+(Actually, Sempron 2500+) Family/Model/Stepping 681 Extended Family/Model 7/8 Package Socket A Core Stepping B0 Technology 0.13ต Instructions Sets MMX, Extended MMX, 3DNow!, Extended 3DNow!, SSE Clock Speed 1747.8 MHz Clock multiplier x10.5 Front Side Bus Frequency 166.5 MHz Bus Speed 332.9 MHz Stock frequency 1400 MHz P-Rating 2200+ L1 Data Cache 64 KBytes, 2-way set associative, 64 Bytes line size L1 Instruction Cache 64 KBytes, 2-way set associative, 64 Bytes line size L2 Cache 256 KBytes, 16-way set associative, 64 Bytes line size L2 Speed 1747.8 MHz (Full) L2 Location On Chip L2 Data Prefetch Logic yes L2 Bus Width 64 bits Chipset ------------------------------------------------------------------------------ Northbridge VIA KM400 rev. 00 Southbridge VIA VT8235 rev. 00 Graphic Interface AGP AGP Revision 3.5 AGP Transfert Rate 4x AGP SBA supported, enabled AGP Aperture 64 MBytes Memory Type DDR Memory Size 512 MBytes Memory Frequency 166.5 MHz (1:1) DRAM Interleave 2-way CAS# 2.5 RAS# to CAS# 3 RAS# Precharge 2 Cycle Time (tRAS) 7 Memory SPD ------------------------------------------------------------------------------ DIMM #2 General Memory type DDR-SDRAM Manufacturer (ID) Nanya Technology (7F7F7F0B00000000) Size 512 MBytes Max bandwidth PC2700 (166 MHz) Part number M2U51264DS8HC1G-6K Manufacturing date Week 30/Year 04 Attributes Number of banks 2 Data width 64 bits Correction None Registered no Buffered no Timings table Frequency (MHz) 133 166 CAS# 2.0 2.5 RAS# to CAS# delay 3 3 RAS# Precharge 3 3 TRAS# 6 7 Software ------------------------------------------------------------------------------ Windows Version Microsoft Windows XP Professional Service Pack 2 (Build 2600) DirectX Version 9.0c |
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2005-09-08, 21:26
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#2 |
Jul 2004
Potsdam, Germany
3×277 Posts |
AFAIK, more than 1 GB RAM is only needed for ECM curves aiming at the 55+ digit levels and for "bigger" (I can't give exact numbers, but e.g. a 140 digit SNFS factorization is not big enough) NFS factorizations.
As an alternative, you could put in a faster CPU, which provides performances increases for basically every factoring method and target composite. Of course, you have to figure out what to do with the old CPU... A more expensive approach would be to exchange CPU & motherboard for an Athlon64. But you'd probably also need Windows64 to take full advantage. |
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2005-09-09, 00:28
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#3 |
Aug 2004
New Zealand
2×5×23 Posts |
You could do a software upgrade. How about writing us an ECM implementation that runs on the video card!
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2005-09-09, 03:53
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#4 | |
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"Jason Goatcher"
Mar 2005
3×7×167 Posts |
Quote:
On-topic: Since I hate to follow the crowd, my actual factoring interest is the Odd Perfect Number search. About 5 minutes ago I wrote the dude(It IS a dude, right? Darn Internet anonymity) asking his advice. Obviously, still waiting on a reply. |
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2005-09-09, 04:47
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#5 | |
"William"
May 2003
Near Grandkid
2×1,187 Posts |
Quote:
I told Jason that one of things I really like about the odd perfect number search is that there will be opportunities for all kinds of machines to make contributions. There will always be a some task that need big memory machines - some large SNFS and some very large ECM to qualify candidates for SNFS. But there will also be important opportunities for smaller machines. Some small memory machines will seach very deep for odd perfect numbers that do not need large factorizations. These people might find an odd perfect number with hundreds of prime factors, none to very high powers. Some users with large memory machines will be eager to team up with small memory machines because every large factorization will unleash a flood of small factorizations needed to effectively use the large factors. These will be task force teams that clear land with a lumberjack to fell the big trees and some bush hogs to clear out the undergrowth. What I really need is some more time away from work so I can get the necessary tools written. William |
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2005-09-09, 19:26
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#6 |
Dec 2004
4538 Posts |
On the original topic, I'd check if you motherboard supports 200fsb. If so you can purchase mobile barton processors 2500XP+. If you overclock these within design specifications 1.7V you should easily be able to get away with a 2300 mhz barton (XP3200+ or something like that).
I was running my mobile Barton XP2600 at 12x200fsb at 1.625V without issues. The bonus is these processors can be picked up on e-bay for a <100 bucks I purchased mine for 70 dollars. |
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