Push it to the max but make sure that you keep it cool!
Fallen
Registered User
Posts: 136 Joined: 25 Sep 2007, 02:00
Location: Bedfordview, Johannesburg
Contact:
Post
by Fallen » 09 Oct 2007, 19:15
Are there any pros or cons to having a certain fsb/memory ratio? I have overclocked my Kingston Hyperx Memory to 912Mhz 4-4-4-12 @ 2.1v and the ratio to my fsb is 9:14 (q6600 clocked at 2.64Ghz). Is it better to keep a 3:2 ratio for instance??
Intel Core 2 Quad Q6600
Thermalright Ultra 120 Extreme CPU cooler /w Arctic Silver 5
ASUS Striker Extreme Motherboard
2GB Kingston Hyperx DDR2-800
OCZ XTC Memory Cooler
ASUS 8800 GTS 640MB
22" ASUS LCD Widescreen
Thermaltake Aguila Case
Zalman 500w PSU
Vista 64bit
badguy
Registered User
Posts: 2127 Joined: 06 Mar 2007, 02:00
Location: Posts: 12951
Post
by badguy » 09 Oct 2007, 19:19
sorry that i am going to hijack this topic
But just need to know who does timings of ram work like 4-4-4-12 ???
I am stupid @ this
psYChowIt
Registered User
Posts: 1748 Joined: 21 Jan 2007, 02:00
Location: Somerset West
Post
by psYChowIt » 09 Oct 2007, 21:04
badguy wrote: sorry that i am going to hijack this topic
But just need to know who does timings of ram work like 4-4-4-12 ???
I am stupid @ this
I dunno either...
RobThePyro
Registered User
Posts: 1210 Joined: 04 Dec 2006, 02:00
Location: Durbz!
Contact:
Post
by RobThePyro » 09 Oct 2007, 21:36
the timings of the ram are like, how long it takes to compleat tasks. so cl4= 4clockclycles etc.
And fallen, i would assume having your ram run at an "even" ratio to your FSB would be best, I.E. Ram/Fsb 1:1 or 2:1 or 1:2 etc, where they divide nicely, should give you a small performance boost over something like 1:3 or 9:14 where they dont divide nicely
Rob~!
douglash
Registered User
Posts: 934 Joined: 07 Jun 2007, 02:00
Location: Durban
Post
by douglash » 10 Oct 2007, 07:56
Agreed! it just means that everything runs in sync therefore faster...
maxxis
Moderator Emeritus
Posts: 8307 Joined: 30 Jun 2004, 02:00
Location: ( . Y . )
Contact:
Post
by maxxis » 10 Oct 2007, 08:38
Say for instance I run my quad @ 400 x 9. Which will give better results?
DDR2-800 @ 4-4-3-9
or
DDR2-1000 @ 4-4-3-9
The latter should give better memory bandwidth or am I wrong?
douglash
Registered User
Posts: 934 Joined: 07 Jun 2007, 02:00
Location: Durban
Post
by douglash » 10 Oct 2007, 11:47
The latter should give better memory bandwidth or am I wrong?
yes - that is correct.
DDR2-1000 @ 4-4-3-9
if you are using the same latencies but higher speed of memory, it will definitely be better/faster...
when you start loosening the timings in order to gain speed(mhz) then it evens out...
so to sum it up, the faster you can run the ram on the lowest possible timings with be the best possible solution...
maxxis
Moderator Emeritus
Posts: 8307 Joined: 30 Jun 2004, 02:00
Location: ( . Y . )
Contact:
Post
by maxxis » 10 Oct 2007, 12:19
You dont want to see my timings at the moment.
Im running
DRAM Frequency: DDR2-1000
DRAM Timing Control: Manual
CAS# Latency: 4
RAS# to CAS# Delay: 4
RAS# Precharge: 4
RAS# Activate to Precharge: 4
TWR: 3
TRFC: 30
TWTR: 3
TRRD: 3
TRTP: 3
DRAM Static Read Control: Disabled
And its stable
douglash
Registered User
Posts: 934 Joined: 07 Jun 2007, 02:00
Location: Durban
Post
by douglash » 10 Oct 2007, 12:32
WOW - what voltage are you running it at and what RAM is it?
DoOb
Registered User
Posts: 2478 Joined: 02 Aug 2006, 02:00
Location: Durban, Bluff, Here by the ocean
Contact:
Post
by DoOb » 10 Oct 2007, 12:40
maxxis wrote: You dont want to see my timings at the moment.
Im running
DRAM Frequency: DDR2-1000
DRAM Timing Control: Manual
CAS# Latency: 4
RAS# to CAS# Delay: 4
RAS# Precharge: 4
RAS# Activate to Precharge: 4
TWR: 3
TRFC: 30
TWTR: 3
TRRD: 3
TRTP: 3
DRAM Static Read Control: Disabled
And its stable
Nice going Maxxis,
@ Doug ---- Maxxis bly met 2gig Team Xtreme PC8000
douglash
Registered User
Posts: 934 Joined: 07 Jun 2007, 02:00
Location: Durban
Post
by douglash » 10 Oct 2007, 12:50
Nice - very nice... i must try do better with the timings and stuff on my ram, just haven't had the time lately...
you know, the whole work thing getting in the way again...
maxxis
Moderator Emeritus
Posts: 8307 Joined: 30 Jun 2004, 02:00
Location: ( . Y . )
Contact:
Post
by maxxis » 10 Oct 2007, 12:54
Team Xtreem PC 8000 Micron D9xxx @ 2.2V
Stable with the CPU @ 3.6 400 x 9
Yields a 14.03 1M Pi run
I34z1k
Registered User
Posts: 8142 Joined: 05 Dec 2003, 02:00
Location: Dry Ice factory
Post
by I34z1k » 10 Oct 2007, 13:27
Yo maxxis. You gotta remember, I got as much bandwidth 1:1 @ like 450 - 500mhz than I did with my ram @ 620c4. Different dividers yield different results. As a general rule of thumb, a new set of ram should require around 30 hours of testing to find the best results
maxxis
Moderator Emeritus
Posts: 8307 Joined: 30 Jun 2004, 02:00
Location: ( . Y . )
Contact:
Post
by maxxis » 10 Oct 2007, 13:53
Scary thought
RobThePyro
Registered User
Posts: 1210 Joined: 04 Dec 2006, 02:00
Location: Durbz!
Contact:
Post
by RobThePyro » 10 Oct 2007, 14:39
Lol maxis, im running my ram same
but mine is only PC6400 Rated at DDR2-800 CL3 and im running 2.4V LOL!...
Rob~!
Fallen
Registered User
Posts: 136 Joined: 25 Sep 2007, 02:00
Location: Bedfordview, Johannesburg
Contact:
Post
by Fallen » 10 Oct 2007, 20:59
Ok, next question: which would give the best performance increase, keeping the timings low resulting in lower mhz or maxing the mhz on standard 5 timings???
RobThePyro
Registered User
Posts: 1210 Joined: 04 Dec 2006, 02:00
Location: Durbz!
Contact:
Post
by RobThePyro » 10 Oct 2007, 21:09
Prob maxing out the mghz, assuming you dont go any higher than CL5 timings. i asked the same question the other day, check it out
Here
Rob~!
I34z1k
Registered User
Posts: 8142 Joined: 05 Dec 2003, 02:00
Location: Dry Ice factory
Post
by I34z1k » 10 Oct 2007, 21:09
RobThePyro wrote: Lol maxis, im running my ram same
but mine is only PC6400 Rated at DDR2-800 CL3 and im running 2.4V LOL!...
Rob~!
Bud, D9s = no go. Lower the voltage a bit. Gates are closing. In a few months those sticks will be dead. Only use v that high for benches.
RobThePyro
Registered User
Posts: 1210 Joined: 04 Dec 2006, 02:00
Location: Durbz!
Contact:
Post
by RobThePyro » 10 Oct 2007, 21:15
ya ya ya.... lol
whatever you say buddy
Rob~!
I34z1k
Registered User
Posts: 8142 Joined: 05 Dec 2003, 02:00
Location: Dry Ice factory
Post
by I34z1k » 10 Oct 2007, 21:25
Lol. Funny boy. We'l see how funny it is in a couple months. ROFL. Go look on xs. You will see.
maxxis
Moderator Emeritus
Posts: 8307 Joined: 30 Jun 2004, 02:00
Location: ( . Y . )
Contact:
Post
by maxxis » 10 Oct 2007, 22:33
Without active cooling on the ram stick to the rated Volts.
My set is rated 2 - 2.35 I think.
Need to double check.
KillerByte
G3AR Staff Member
Posts: 5790 Joined: 08 Mar 2003, 02:00
Location: PCFormat HQ
Contact:
Post
by KillerByte » 11 Oct 2007, 00:46
I34z1k wrote: Yo maxxis. You gotta remember, I got as much bandwidth 1:1 @ like 450 - 500mhz than I did with my ram @ 620c4. Different dividers yield different results. As a general rule of thumb, a new set of ram should require around 30 hours of testing to find the best results
well in my case, i can just ask you. lol
What I type has nothing to do with the people that employ me.
I34z1k
Registered User
Posts: 8142 Joined: 05 Dec 2003, 02:00
Location: Dry Ice factory
Post
by I34z1k » 11 Oct 2007, 06:55
maxxis wrote: Without active cooling on the ram stick to the rated Volts.
My set is rated 2 - 2.35 I think.
Need to double check.
Well with d9s even with cooling its dangerous. Check it out
@Kb
Especially on your board
maxxis
Moderator Emeritus
Posts: 8307 Joined: 30 Jun 2004, 02:00
Location: ( . Y . )
Contact:
Post
by maxxis » 11 Oct 2007, 08:47
So even if the ram is rated to operate at 2.1 - 2.3 like my set is, its not a good idea to give it some?
DoOb
Registered User
Posts: 2478 Joined: 02 Aug 2006, 02:00
Location: Durban, Bluff, Here by the ocean
Contact:
Post
by DoOb » 11 Oct 2007, 10:03
Yip thats what he told me, can kill ram, the most ive put into my ram was 2.4v,