rm running at lower speeds

DirtyD86 · 10-22-2007, 11:08 PM

i have an asus p5k-e/wi-fi AP mobo and im using this ram:
NEWEGG LINK

lately i have been experimenting with overclocking my CPU. i havent changed the multiplier, only my bus speed, from 200 to 260 ATM. i noticed my ram frequency under CPUz is running at 390mhz. i did not ever check prior to overclocking so i don't know if this is a result of that, or if its what my ram runs at... i mean i would assume 800mhz ram would run at 800mhz but memory timings and whatnot is a subject i know very little about.. any help?

**Cromewell** · 10-23-2007, 12:50 AM

It's because your FSB is 260, setting it to 266 will get you 800MHz

DirtyD86 · 10-23-2007, 01:35 AM

changed to 266, now frequency is 399.2 mhz...
does the command rate 2 have something to do with it? (is the 399.2 multiplied by 2 to get actual mhz)??

[-0MEGA-] · 10-23-2007, 02:07 AM

DDR2 800 runs at 400Mhz.

The command rate has nothing to do with determining the actual speed,

**Cromewell** · 10-23-2007, 05:40 AM

Command rate is how many cycles the controller has to wait in between doing anything. There are additional latencies on top of the command rate. As 0mega said, the RAM runs at 400MHz, it's DDR so it's equivalent to 800MHz.

10-22-2007, 11:08 PM	#1 (permalink)
DirtyD86 Diamond Member Join Date: Jul 2007 Location: Atlanta GA Age: 22 Posts: 2,538	rm running at lower speeds i have an asus p5k-e/wi-fi AP mobo and im using this ram: NEWEGG LINK lately i have been experimenting with overclocking my CPU. i havent changed the multiplier, only my bus speed, from 200 to 260 ATM. i noticed my ram frequency under CPUz is running at 390mhz. i did not ever check prior to overclocking so i don't know if this is a result of that, or if its what my ram runs at... i mean i would assume 800mhz ram would run at 800mhz but memory timings and whatnot is a subject i know very little about.. any help? __________________ http://contraildesigns.com MOBO: ASUS P5K-E/WiFi-AP CPU: E8400 @ 4.0 ghz - Zalman 9500 RAM: 4GB Kingston 800DDR2 GPU: BFG 8800GT 512

10-23-2007, 12:50 AM	#2 (permalink)
Cromewell Moderator Join Date: Dec 2004 Location: Canada Age: 25 Posts: 10,602	It's because your FSB is 260, setting it to 266 will get you 800MHz __________________ You know what the chain of command is? It's the chain I go get and beat you with 'til ya understand who's in command here. www.userfriendly.org

10-23-2007, 01:35 AM	#3 (permalink)
DirtyD86 Diamond Member Join Date: Jul 2007 Location: Atlanta GA Age: 22 Posts: 2,538	changed to 266, now frequency is 399.2 mhz... does the command rate 2 have something to do with it? (is the 399.2 multiplied by 2 to get actual mhz)?? __________________ http://contraildesigns.com MOBO: ASUS P5K-E/WiFi-AP CPU: E8400 @ 4.0 ghz - Zalman 9500 RAM: 4GB Kingston 800DDR2 GPU: BFG 8800GT 512

10-23-2007, 02:07 AM	#4 (permalink)
[-0MEGA-] VIP Member Join Date: Nov 2004 Location: Concord, NH Age: 20 Posts: 27,985	DDR2 800 runs at 400Mhz. The command rate has nothing to do with determining the actual speed, __________________ Core 2 Quad Q9550 @ 4.1GHz Asus Rampage Formula X48 ATI 4870X2 2GB GDDR5 (800/1900) 4GB (2x2GB) DDR2 960 750GB SATAII w/32MB Creative SB X-Fi Titanium Fatal1ty SilverStone 750W +12V@60A 3DMark06: 22605 www.photosbygeoff.com

10-23-2007, 05:40 AM	#5 (permalink)
Cromewell Moderator Join Date: Dec 2004 Location: Canada Age: 25 Posts: 10,602	Command rate is how many cycles the controller has to wait in between doing anything. There are additional latencies on top of the command rate. As 0mega said, the RAM runs at 400MHz, it's DDR so it's equivalent to 800MHz. __________________ You know what the chain of command is? It's the chain I go get and beat you with 'til ya understand who's in command here. www.userfriendly.org

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