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DDR3 Timing advice

H

Hvale2k5

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Processor AMD Phenom II x2 BE 555(unlocked x3 OC at 3.5 stable)
Motherboard Asrock 880 GXH/3.0USB
Cooling Zalman 9500a
Memory 4GB G.skill DRR3 (PC1600) 9-9-9-25
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I went with this auto timing when i change Fclock to 766, not sure if it's effective or not since im not very good at timing DDR.
mb4gvl.png


any help would be appreciated :)
 
that is the actual clock, not the effective. Effective would be twice that or 1533 Mhz
 
cadaveca said:
Which board? I can give you specific settings for within bios if you tell me which board, and which exact memory model.
Click to expand...

Mobo:asrock 880gxh/usb3
Mem:Gskill ripjaw pc1600

Ignore the pix above lol, i crank it up to 800mhz and went with the manual timing, wonder if it right.

2zsusyt.png
 
should be like 9-9-9-24-6-40-12-6-2T

What you ahve looks ok, unsure of timings not shown, and could not find easy picture of memory area in bios. If you can snap a pic of bios memory section, that would be of great help.
 
Most higher end RAM goes beyond "certification for CPU/mobo". While supported, it is not verified by AMD, Intel, Asus, etc. as being a "tested stable enviroment". Long story short, beyond what the listed certified standard of the board or CPU, you will have to manual set the timing to what it should run at. It is perfectly normal for the default to be set to something lower, usually 1333 Mhz, 9-9-9-24 as the base. Manually setting it to what it should be is fine and you are good.

Go with the 800 Mhz (1600 Mhz effective) at 9-9-9-24, 2T and leave everything else on Auto. Give the RAM a few days to break in and you can play with it some more to see if you can push it a little further say 1600Mhz, 8-8-8-21.
 
cadaveca said:
should be like 9-9-9-24-6-40-12-6-2T

What you ahve looks ok, unsure of timings not shown, and could not find easy picture of memory area in bios. If you can snap a pic of bios memory section, that would be of great help.
Click to expand...

Here i took a pix in my bios
2eol6dv.jpg
 
9-9-9-25-6-6-6-12-40-6-6-2-4-4-110-110.

Then test using Memtest86+ cd(boots outside of windows), but should be OK without that.


2 bolded timings may be adjusted up to 8 for each, but i do not think that is nessecary.
 
Ran 3 passes in memtest with 0 error, thanks cadaveca.
 
:toast:

Of course, you might want to make sure using HCL memtest or something...but when it comes to AMD, secondary timings are kinda standard, no matter what type of IC is used. @ 1600 CAS 9 1.5v, it's pretty obvious that those are 1.35v 1333 ICs...


With that said, you could try 1.65v, and lowering the 9-9-9-25 to 6-6-6-16 or 7-7-7-20. 7-7-7-20 should be no problem, alot of sticks will do that with 1.5v, but the CAS6 performance is suspect as I am unsure of exact IC...you might only get 6-8-6.



:rockout:
 
Hey I just lowered those two you gave in bold to 6-6 on mine:toast:

Can you recommend a good full on setting for running at 7-8-8 at 1426-ish?

I mean give me that entire string and not just the first four or five:)

I'd really appreciate it:respect:

I've got the 1 Gig x2 Kingston Hyper X kit with the 9-9-9 timings:)

I used to be THE MAN when it came to DDR when I had my S939 system:rolleyes:

Had the tightest the bios would support-2-2-2-5 etc. and I also had tight ones on this new AM3-7-7-7-18 at 1333...

But I did something wrong and it kept crashing!

I played with the voltage but nothing helped:twitch:

I've no idea whether I simply pushed the sticks too far or if it was just misfiring due to something I was ignorant of being set incorrectly...

It's been a real bitch finding out what it all means and how each and every kind of setting relates to the others so I can really balance out the whole mess:p

I've found good guides on DDR but noone is saying dink about DDR3!,Lol
 
Last edited:
Nothing has really changed since DDR1. Controllers have changed, i suppose, but hte basci timings still all apply, but are now higher. However, becuase the bus speed is much faster than before, the larger latency is actually not larger, but in alot of cases, smaller(2000mhz is 10x faster than 200, ergo latencies actual effect is 1/10th @ 2000mhz). So, really, there's nothing new to explain. B2B was exsposed to Intel users some time ago... I think there might be one more really signifigant timing left, but that's not my call.


Anyway...before I start bitching about the past...

I need more info than that. I need shots of the bios memory page, the ram's default timings, and the ram's default voltage.

Unfortunately, I really don't due much but apply a formula I kinda made up some time ago. So be prepared to properly test, as I can't guarantee 100% that what I give will work for you. Haven't been wrong yet, though. ;)

As to tweaking for the best possible, say, for benching, that's not my thing. Standard timings only. I don't really even like giving out timings for more than 1333, as that would technically void your cpus warranty.
 
Yeah I'm not trying to push it to the edge:)


I'd like to find a nice balance of going a bit past 1333 and better then stock timings...

9-9-9-24@1.6 V:)

Kingston HyperX 2GB (2 x 1GB) 240-Pin DDR3 SDRAM D...

The thing is there's more settings in the bios compared to my old Asus A8N so I'm kind of lost:p

I'll post a pic tomorrow,I'm about to crash:),And thanks alot bro ^_^
 
cadaveca said:
:toast:

Of course, you might want to make sure using HCL memtest or something...but when it comes to AMD, secondary timings are kinda standard, no matter what type of IC is used. @ 1600 CAS 9 1.5v, it's pretty obvious that those are 1.35v 1333 ICs...


With that said, you could try 1.65v, and lowering the 9-9-9-25 to 6-6-6-16 or 7-7-7-20. 7-7-7-20 should be no problem, alot of sticks will do that with 1.5v, but the CAS6 performance is suspect as I am unsure of exact IC...you might only get 6-8-6.



:rockout:
Click to expand...


Hey cad, so if i want to try 6-6-6-16 or 7-7-7-20, i just need to change the those clocks & Voltage only?
 
Hey cad, i tried 7-7-7-20 /w 1.65v + 1.50 and my PC won't boot.
2pte1ol.jpg

Am i doing something wrong here?
 
^ tried and still fail to boot, but i went 8-8-8-24-6-6-6-12-40-6-6-2-4-4-110-110 (ran Memtest through 4passes /w 0 erro). Any suggestion? or this is ok.
 
Well, considering the 1333mhz CAS9 stock, CAS8 1600mhz is pretty good.

As long as you properly test it, it's ALL good.

With CAS7 and CAS6, you might need better NB volts, so you may also want to explore that as well.

Mem is a passive device...so it either works...or doesn't. your timings are good, so no, I do not think you are doing anything wrong.

Maybe someone can correct me on that, but that doesn't seem to happen often when it comes to mem. I wish it would tohugh...I can't possibly know enough yet!:laugh:
 
hey cad, i went to go back to 1333mhz from 1600, this timing loooks ok to you? 7-7-7-20-5-5-5-10-30-6-6-2-4-4-110-110
 
yup.

maybe 7-7-7-21-5-5-5-10-34-5-5-2-4-4-90-90 might work too...
 
These are the red Ripjaws right? Need to test mine further but yeah they'll do 8-8-8-24 at regular 1.5v but not much lower timings wise it seems. Good for at least 1700 Mhz at 9-9-9, 1.65v in initial testing. Tried 1800 1.65v but no go the first time and moved on. EVGA P55 here.
 
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