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Old 11-19-2008, 11:01 AM   #1 (permalink)
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Question OCZ Ram timings

So I got a 4 gigs of these:
Newegg.com - OCZ Reaper HPC Edition 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory - Desktop Memory

to replace my 2 gigs of G.Skill Ram, however unlike G.Skill OCZ does not provide a recommended timings for my Gigabyte P35-DS3R mobo. I know the basic timings of 4-4-4-15 but what about the other timings like:

ACT to ACT delay (tRRD) [?]
Rank Write to READ Delay [?]
Write to Precharge Delay [?]
Refresh to ACT Delay [?]
Read to Precharge Delay [?]


heres an example of someones timings with memset:
http://i19.tinypic.com/871hnxh.jpg

does anyone have experience with my ram and mobo and has the other recommended timings? Also should I stay a 2.0v or go 2.1v just for stability? I'm under the impression that 2.3+ and beyond will fry any ram. Lastly is the whole 1:1 ratio even worth it cause a lot of people seem to be downclocking their ram to 333 to achieve the ratio.
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Old 11-19-2008, 05:57 PM   #2 (permalink)
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Default Re: OCZ Ram timings

if anybody finds a review on how the ratio impacts performance (i can only imagine its minimal) I would love to read it.
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Old 11-19-2008, 07:30 PM   #3 (permalink)
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Default Re: OCZ Ram timings

1:1 vs. 2:3 at the same speed and timings means absolutely no difference to the memory bandwidth... i know this from experience, but here's a review on it too

X-bit labs - Choosing the Right Memory for Core 2 Duo Platform - Part 1 (page 4)
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Old 11-19-2008, 09:21 PM   #4 (permalink)
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Default Re: OCZ Ram timings

Quote:
Originally Posted by BongWizard View Post
1:1 vs. 2:3 at the same speed and timings means absolutely no difference to the memory bandwidth... i know this from experience, but here's a review on it too

X-bit labs - Choosing the Right Memory for Core 2 Duo Platform - Part 1 (page 4)
hmmm what about other ratios like 4:5 and stuff? also what about the subject thread :P
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Old 11-19-2008, 11:28 PM   #5 (permalink)
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Default Re: OCZ Ram timings

i'd recommend settings something like this... you'll have to fine tune them using a tesing utility like Memtest86+ - Advanced Memory Diagnostic Tool

ACT to ACT delay (tRRD) [3-6]
Rank Write to READ Delay [5-9]
Write to Precharge Delay [7-11]
Refresh to ACT Delay [46-55]
Read to Precharge Delay [4-8]
Static tRead Value [7-12]

just start out loose and run MemTest for a couple of passes between each move... i cant be sure about those settings, because its been a while sincei used OCZ sticks
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Old 11-20-2008, 12:06 AM   #6 (permalink)
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Default Re: OCZ Ram timings

Quote:
Originally Posted by BongWizard View Post
i'd recommend settings something like this... you'll have to fine tune them using a tesing utility like Memtest86+ - Advanced Memory Diagnostic Tool

ACT to ACT delay (tRRD) [3-6]
Rank Write to READ Delay [5-9]
Write to Precharge Delay [7-11]
Refresh to ACT Delay [46-55]
Read to Precharge Delay [4-8]
Static tRead Value [7-12]

just start out loose and run MemTest for a couple of passes between each move... i cant be sure about those settings, because its been a while sincei used OCZ sticks
I do use memtest but its long 8 hour testing processes, I guess no one has recommended OCZ ram timings to use with the mobo I have
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Old 11-20-2008, 01:11 AM   #7 (permalink)
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Default Re: OCZ Ram timings

it could take 8 hours to fully dial the timings in... i only run MemTest for about half an hour each time... that usually gets me 2 full passes, which will detect any possible errors... you could also try just running tests 3 and 8 between each move, then a full test at the end... timings for every set of DIMMs and every board are different, so you'll have to tune yours specifically for your system
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Old 11-20-2008, 01:36 AM   #8 (permalink)
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Default Re: OCZ Ram timings

don't you have the auto feature for the advanced timings? I'd set it to auto and see what the system puts it at, then start messing around w/ it.
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Old 11-20-2008, 02:44 AM   #9 (permalink)
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Default Re: OCZ Ram timings

yeah... if you can run it with Turbo on the memory enhance, it should give you a good idea where to start at for memory timings
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Old 11-20-2008, 03:34 PM   #10 (permalink)
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Default Re: OCZ Ram timings

hmm what a bummer the OCZ guys told me the same thing ( unlike G.Skill which provided all the timings for the different mobos ). Ah well, anything I change is good as long as I don't go over 2.3 volts right?
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