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Need help setting Ram timings


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#1 Sleepieyed

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Posted 13 September 2010 - 04:46 PM

I have this memory : Kingston HyperX 2GB (2 x 1GB) 240-Pin DDR3 SDRAM DDR3 1800 (PC3 14400) Desktop Memory Model KHX1800C9D3K2/2G
I have this motherboard: ASUS M4A77TD AM3 AMD 770 ATX AMD Motherboard
I have this cpu: AMD Phenom II X2 550 Callisto 3.1GHz Socket AM3 80W Dual-Core Desktop Processor HDX550WFGMBOX


In CPU-Z it says this :

General
Type: DDR3 Channels # Single
Size: 2048 MBytes NB Frequency 2009.0 MHz

Timings
DRAM Frequency 803.6 MHZ (I put it at 1600MHz in BIOS it was at auto)
FSB:DRAM 1:4
CAS# Latency (CL) 11.0 clocks
RAS# to CAS# Delay (tRCD) 11 clocks
RAS# Precharge (tRP) 11 clocks
Cycle time (tRAS) 29 clocks
Bank cycle Time (tRC) 40 clocks
Command Rate (CR) 2T




In the SPD tab it says

Max Bandwidth pc3-10700 (667 MHZ)








This memory is rated at 1800 mhz so I would like to get it up as close as possible to that speed.
If anyone could give me some help I would greatly appreciate it.

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#2 MrBruce1959

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Posted 13 September 2010 - 05:38 PM

Hello I am one of those people who like to raise the numbers one step at a time and test the results for stability.

By this I mean I will raise each field up to the next available setting leave it like that and check for system stability and heat output.

I also use 3DMark06 a lot to benchmark the results. 3dMark06 http://www.futuremark.com/benchmarks/3dmark06/introduction/

Once I hit a combination that starts causing issues, I step it down a notch and try again.

I do not know about anyone else, but there is no exact formula with over clocking that works from board to board, sometimes what works for one motherboard does not work with another, even if both systems are exact duplicates of each other.

I have tried this when I was assembling two systems that had exactly the same setup, I could not get both machines to work with the same exact ratios.

Part for part, both computers were exact duplicates.

So as I said, you have to experiment with the settings, stress the system, see if it is stable, if so, try the next setting the BIOS allows and stress the system again, until you start to see either system becoming unstable, or the results offer no change.

Just remember, as you increase the ratios the system will start heating up and require a better means of getting that heat out of the system.

Also read this.

http://www.wikihow.com/Overclock-a-PC

Bruce.
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#3 Sleepieyed

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Posted 13 September 2010 - 06:24 PM

Thanks for the quick reply MrBruce.

I will need some help on exactly how to up the ram. I have no idea what to do in the BIOS and what settings to change.
I would read an article on how but I'm afraid I'll miss read it and blast my internals.




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