April 12th, 2002, 08:49 PM
DDR Memory Clock speed
I'm a little confused.
I have finally put together my new system (it worked the first time) and am starting to overclock it.
My problem is I can't seem to figure out how to control my DRAM clock speed.
512MB PC2700 Samsung
It is failing at a 115 MHZ FSB and I can't figure out why.
CPU multiplier is set at 8
April 12th, 2002, 09:01 PM
Guess I figured it out:
DRAMM Clock Setting options are-
100 = FSB X 1.0
133 = FSB x 1.33
166 = FSB x 1.66
SPD = FSB X (in my case 1.66 since PC2700Spec)
I just dropped the setting to 133 and I am all set.
I was getting a good 185 MHZ setting on my memory though which I think isn't bad.
April 12th, 2002, 09:10 PM
The Video card is a Geforce256 that is from the computer I am upgrading from:
PIII 667 running on a 133 FSB.
I am running miminal attachments- only 1 AGP card and no PCI cards at the moment so I don't think that should cause a problem at the moment. I am working my way up the MHZ scale. I am currently test 120 x 8 with a 133 setting on my memory (Turbo).
April 12th, 2002, 10:13 PM
I seem to have worked out the DIMM settings:
I am now testing at
Turbo Setting (2 CAS)
My PCMARK2002 scores (for 150 6.5 multi Turbo) are:
up from the stock settings of:
April 12th, 2002, 11:32 PM
My first Generation GeForce256 doesn't like to run for very long over 150MHZ. I can run through PC MARK a couple of time at 155 MHZ and then it overheats and I have problems.
I can't wait for the GeForce4 4200 to come out and then I will start testing again.
My best test for the evening was:
7x multiplier (1099 MHZ)
CPU 3118(20% over non-o'c)
MEMORY 3319 (32% over non-o'c)
HDD 1079 (1% over non-o'c)
limiting factor Video card
I am going to run normal at(and do some burn-in tests)until I can get a new video card:
Hope my first experience at overclocking hasn't bored everyone.
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