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Technology Computing, programming, science, electronics, telecommunications, etc. |
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09-04-2008, 11:03 AM | #1 |
Snooty Borg
Join Date: Dec 2007
Posts: 81
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FSB Speed Questions
I recently rebuild my computer but being a novice at CPU optimization I wanted to plumb the depths of the Cellar's knowledge in this area. My CPU seemed to be running a little slower than expected so I ran a progam called CPU-Z to find the relevant configuration info.
My question revolves around the FSB speed and if it is correct for my current setup. I am told that the automatic configuration tends to be a little too cautious and I may be loosing out on some speed. My FSB is 200 MHz with a multiplier of 15x, out of a rated 800 MHz. This gives me an FSB : DRAM of 3:5. Does this make sense? Am I doing it wrong? ------------------------- CPU-Z version 1.47 ------------------------- Processors Map ------------------------------------------------------------------------------------ Number of processors 1 Number of threads 2 Processor 0 -- Core 0 -- Thread 0 -- Thread 1 Processors Information ------------------------------------------------------------------------------------ Processor 1 (ID = 0) Number of cores 1 (max 1) Number of threads 2 (max 2) Name Intel Pentium 4 531 Codename Prescott Specification Intel(R) Pentium(R) 4 CPU 3.00GHz Package Socket 775 LGA (platform ID = 4h) CPUID F.4.9 Extended CPUID F.4 Core Stepping G1 Technology 90 nm Core Speed 3000.2 MHz (15.0 x 200.0 MHz) Rated Bus speed 800.0 MHz Stock frequency 3000 MHz Instructions sets MMX, SSE, SSE2, SSE3, EM64T L1 Data cache 16 KBytes, 8-way set associative, 64-byte line size Trace cache 12 Kuops, 8-way set associative L2 cache 1024 KBytes, 8-way set associative, 64-byte line size FID/VID Control no Features Chipset ------------------------------------------------------------------------------ Northbridge Intel i945G/GZ rev. A2 Southbridge Intel 82801GB (ICH7/R) rev. A1 Graphic Interface PCI-Express PCI-E Link Width x16 PCI-E Max Link Width x16 Memory Type DDR2 Memory Size 2048 MBytes Channels Dual Memory Frequency 333.4 MHz (3:5) CAS# 5.0 RAS# to CAS# 5 RAS# Precharge 5 Cycle Time (tRAS) 15 Bank Cycle Time (tRC) 21 Memory SPD ------------------------------------------------------------------------------ DIMM #1 General Memory type DDR2 Module format Regular UDIMM Manufacturer (ID) Kingston (7F98000000000000) Size 1024 MBytes Max bandwidth PC2-5300 (333 MHz) Part number 9905316-005.A04LF Serial number 7E18CBE3 Manufacturing date Week 07/Year 08 Attributes Number of banks 2 Data width 64 bits Correction None Nominal Voltage 1.80 Volts EPP no XMP no Timings table Frequency (MHz) 200 266 333 CAS# 3.0 4.0 5.0 RAS# to CAS# delay 3 4 5 RAS# Precharge 3 4 5 TRAS 9 12 15 TRC 12 16 20 DIMM #2 General Memory type DDR2 Module format Regular UDIMM Manufacturer (ID) Kingston (7F98000000000000) Size 1024 MBytes Max bandwidth PC2-5300 (333 MHz) Part number 9905316-005.A04LF Serial number 7C18EEE3 Manufacturing date Week 07/Year 08 Attributes Number of banks 2 Data width 64 bits Correction None Nominal Voltage 1.80 Volts EPP no XMP no Timings table Frequency (MHz) 200 266 333 CAS# 3.0 4.0 5.0 RAS# to CAS# delay 3 4 5 RAS# Precharge 3 4 5 TRAS 9 12 15 TRC 12 16 20 |
09-04-2008, 11:18 AM | #2 |
When Do I Get Virtual Unreality?
Join Date: Dec 2002
Location: Raytown, Missouri
Posts: 12,719
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Sorry...I got nuthin'. I could sit here and look at the specs and drool like an idiot, if you think that would help at all.
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"To those of you who are wearing ties, I think my dad would appreciate it if you took them off." - Robert Moog |
09-04-2008, 11:21 AM | #3 |
go ahead, abbrev. it
Join Date: Jun 2005
Location: Lawrence, KS
Posts: 2,623
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quadruple your virtual memory??? /scratches head
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Chooses rowing vs. wading |
09-05-2008, 08:38 AM | #4 | |
Read? I only know how to write.
Join Date: Jan 2001
Posts: 11,933
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Quote:
First learn what is the bottleneck. Meanwhile, FSB speed would be limited by hardware. Run it too fast and errors (failure) results. Choosen would be a number that maximizes the FSB speed for that motherboard design. Yes, the FSB can be run faster - and the computer may then crash more often. More often, the trivial amount of speed improvement causes a major increase in crashes. You don't like their number? Then (if possible) increase the FSB speed and test. If slowness exists, then the number that defines that slowness should be located. Otherwise every suggested solution will be nothing more than wild speculation. |
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09-05-2008, 03:02 PM | #5 |
Lecturer
Join Date: Jan 2001
Location: Carmel, Indiana
Posts: 761
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Autoruns would be good too
Tom,
Also, running Autoruns, also available from www.sysinternals.com, will give you an idea of what's running at startup, and will let you know what you should and should not disable to make your machine more efficient. Thanks, Mitch |
09-05-2008, 03:23 PM | #6 |
Goon Squad Leader
Join Date: Nov 2004
Location: Seattle
Posts: 27,063
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Holy Cow mbpark!
That is awesome, thanks! I've spent a bit of time with filemon and procmon.... I'm delighted to add that tool to my kit. Thank you very much.
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