neftv
join:2000-10-01
Broomall, PA Reviews:
 ·QuantumVoice
·SIP Global Phone
 ·Verizon FiOS
| Trying to understand FSB:DRAM in CPU-Z I could not find any reference to my particular set up in googling so I hoping I can get some information here.
I have a ASUS M2A-VM HDMI with a Phenom 9600 BE. 2gig ram DDr2-800.
Now CPU-Z says
11.5 X
Bus Speed 200
HT link 1000
NB Freq 1800
I do have PC2-6400 RAM but I have it running at DDr2 400
to get a FSB:DRAM of 1:1
If try to run ram at 800 I get a ratio of 1:2
In that latter could I end up with a bottlenecks in the CPU?
What are symptoms of bottleneck in the CPU?
I trying to understand how this works. Do you always want to see a 1:1 ratio?
Thanks. |
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 AirwolfPremium
join:2001-10-30
Windsor, ON | Unless you're clocking down the CPU, you're not bottlenecking it by not running 1:1.
Run the CPU as fast as you can or want, then worry about RAM speed after. |
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neftv
join:2000-10-01
Broomall, PA Reviews:
·QuantumVoice
·SIP Global Phone
·Verizon FiOS
| I'm just running CPU at rated speed 2300mhz (11.5x200). I notice that when I put ram in auto mode in bios, it will clock it at 800 (rated speed of the Ram) and that is where I get the 1:2 ratio.
I wasn't really looking to overclock at this point but I was trying to understand the ratio. if data speed in Ram is twice as fast as in the CPU I just trying to grasp that? |
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 elios
join:2005-11-15
Springfield, MO | CPU clock speed and RAM clock speed are different things
you have to remember that the RAM clock relates to data transfer were the CPU clock is data processing
the CPU can eat up the data in its cache extremely fast and the cache isnt very big
the ram and FSB need to be very fast to keep the the CPU feed with data |
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neftv
join:2000-10-01
Broomall, PA | It does make sense then that in auto mode the FSB:DRAM is 1:2 ratio because if I clock down the Ram to 400 mhz to give 1:1 ratio there might be more wait states in the CPU. |
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elios
join:2005-11-15
Springfield, MO | ratios have nothing to do with trasferrates
its just how the clock speeds are set for things since every thing is based off the FSB clock it ether need a multiplier or divider |
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 jsimmonsPremium,MVM
join:2000-04-24
Falls Church, VA
 ·Cox HSI
| reply to neftv
Even if you are not OCing your CPU, allow the memory to run as fast as it can and remain stable. Run IntelBurnTest to verify that the memory is stable at that 1:2 speed.
--
"Everything should be made as simple as possible, but not one bit simpler."- Albert Einstein |
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neftv
join:2000-10-01
Broomall, PA Reviews:
·QuantumVoice
·SIP Global Phone
·Verizon FiOS
| I tried to run that IntelBurnTest on my system. The first two times it crashed but I forgot to turn off my antivirus. Third time in standard mode I got
39.488 22.6370 3.220900e-002
consistently for the 5 test.
But then I did Max and now it can't complete it just crashes my system and reboots. Nothing in the log it creates too.
I even downed the clock on Ram to DDR2 400 to have 1:1 ratio and the same thing.
I will look at this again when I get back later tonight. In the meantime any suggestions welcome. Thanks. |
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neftv
join:2000-10-01
Broomall, PA Reviews:
·QuantumVoice
·SIP Global Phone
·Verizon FiOS
| reply to jsimmons
I read the read me file for Intelburntest and it says its recommended for 64bit OS. I have XP but in 32bit
I did a memtest86 on the ram and it passes.
I going to put the other ram I had by ADATA DDR2-667. The Ram I have in there now is that Crucial Ballistix. |
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neftv
join:2000-10-01
Broomall, PA Reviews:
·QuantumVoice
·SIP Global Phone
·Verizon FiOS
| Interestingly the A-Data ram I have is DDR-2 667 when I run it at DDR-400 I have better results with Memtest86. Also the ratings at that speed at 5-3-3-9 I think but the full speed is like the Ballistix of 5-5-5-15. I think because video is shared maybe the better refresh is doing that on the A-Data. The other ram is fast but to latent. |
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