Timings

scotty365

scotty365

scotty365

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Joined
25 Nov 2009
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Rotherham Need: GHz
Hi all,

I've been made redundant from work and I have nothing better to do than tweak the nads off my new budget rig.... and get drunk
I stripped my old rig for bits and now have two type of mem:-

2x1GB OCZ Reapers 8500 HPC
2x1GB Corsair XMS2 8500

Ive got my timings at 5-5-5-15 but cant get them higher than 980Mhz with volts @ 2.15. Can I loosen the timings to get a better bandwidth via higher speed or shall I be grateful that they have gone this far without setting on fire:D

Scotty
 
mem voltage is 2.15v - is it safe to go more?
cpu voltage 1.5v - temps are a limit here 65c average peak 75c in Everest (the most stressful for me)
bios is fully updated

I guess the XMS2 is the limiting RAM as the SPD is lower for these but if I just put the Reapers in I get the same sort of issue

I need to configure my mem thro the bios but im confused with the settings (I'll start a new thread for this) at the moment its on auto config!

Thanks
Scotty
 
I've tested the sticks in pairs , OCZ and Corsair - not singularly, I will do the do and see what results I get.....

Thanks
 
Im using 5:4 divider at the moment - adjusting the FSB forces me to adjust the ratio so that it keeps the RAM under 980MHz
 
Okay, thanks so far!

I reset my o/c and tried to boot in at 266 FSB but couldnt get it to post. Bios tells me DDR volts are at 1.8v. So im gonna do as you described and when I get a bit of time I'll test the sticks seperately at auto volts.

One issue that may arise later is the OCZ is 2.1v and the Corsair is 2.0v

@Yellow Beard The Corsair is rated 5-5-5-15 @400 and the OCZ 5-5-5-15 @533 in the profile list, I guess the auto detect is picking one of these up?

Scotty
 
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@Yellowbeard, yes youre right its the other way round Corsair 2.1v OCZ 2.0v

I tested the memory seperately and the bios picks the tightest timings (5-5-5-15) possible at 400Mhz for Corsair and 533MHz for OCZ, then sets the voltage at approx 2.1v for both. When they are in together it picks the Corsair timing by default (lower of the two) and set the speed at 400 Mhz
I found a set of timings that I can set in the bios and get the system booted up but Im not sure where to go with those yet.
I guess the timings at 400 and 533 are the reason for the 2.1v as they are rated at 1.8v for slower speed (but tighter timings). The only way I can see me being able to use the correct divider and less volts is to manually enter the values in the bios. And select the volts manually too, I need take a look at looser timings if i need to get the speed up (But is more speed worth the looser timings?) but I need a little help to ensure all the rest of the values are at the correct settings. This is tricky as there are so many I cant figure tham all out.


what do you fellows think?

Scotty
 
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AHHHHHHHYAYAYAYA*Multi-combo head slapping*:mad:

Im needing help here brothers..... Can we break it down into single stages please.

I see how the graph works - im savvy enough at maths to understand the ratio's (even tho thay are back to front))in a manner))

I cant set my ram in the bios to configure it properly - auto settings just select optimal ratios of 5:4 and 5-5-5-15 timings Where do i go from here?

~Scotty
 
Yellowbeard said:
I'm not sure what you are trying to do at this point but, you won't likely get 1066 running 4up. It's going to be even harder with unmatched kits.
Click to expand...

Just stick with me here for a moment please....

So 4x1GB is normally slower than 2x2GB even if they are rated the same?(1066)

If so, I think this may be my problem...I can get them to 980MHz(ish) max. do you think thats about right?

I set out with the theory that looser timings will get more speed...is this incorrect?
As my mobo (in auto mode) selects 5-5-5-15 no matter what the speed and ratio(yes, they were tested seperately!:D) I tryed to find manual timings.

~Scotty
 
Thanks for the help Wayne it is much appreciated. I'm trying to get to grips with this and I have reread your posts many time and learned a lot. Having discussed this with a techy friend of mine - his conclusion is that the mismatched modules is my problem, and it has also been suggested here in this thread. The obvious solution is to buy 2x2GB sticks (unfortunately DDR2 prices are too high atm)

I'm pleased with 980Mhz 5-5-5-15 considering that they are mixed memory sticks.

I'm gonna wind this thread up until I buy matched pair then hopefully you will help me get the best from those. I've learned quite abit about memory - enough to make me consider carefully which mem to buy - voltage, speed and timings and also the number of sticks!

~Scotty
 
Big.Wayne said:
If you want to waste more time and money then ignore me, if you want to save money, get your memory running at its meant to and actually understand what you are doing then I'm here! :cool:
Click to expand...

Ok Wayne I'm gonna sort this out. It would be cool if you was around this evening so you can talk me thro this a bit.
Am gonna try the sticks seperately at stock speed - normal voltages etc...
I'll post the results here.

~Scotty
 




This was at an auto voltage of 2.3v for the Corsair and OCZ (set by the motherboard)

Thats at 2:1 as you can see the SPD for the Corsair is strange there is no mention of 533Mhz indeed it says 6400 but the sticks say 8500 (7-7-7-20@1066Mhz) is that a glitch?

With the OCZ fitted I lowered the voltage but couldnt boot into windows until 2.2v according to the bios. Ran a ram stress test for 10 mins with no probs so far

~Scotty
 
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Ok, I did a brief test with the OCZ and I cant boot into windows less than 2.2v and during testing got errors within minutes. The next step up is 2.3v so I'm gonna leave it overnight tonight on test and post here in the morning. I'll test the Corsairs after that.

~Scotty
 
Big.Wayne said:
P.S I would manually sort out those Corsair timings to 5-5-5-18 before testing . . . the OCZ are fine as is . . . .
Click to expand...

I need help with that - I have a list of 18 settings to manually configure I'm unsure about the settings for 5-6 of them. I'll post a pic of the bios as it will make it easier for you to see my problem.

Here is a pic, the last 5 timings Im not sure of but there may be more, maybe YellowBeard can help?




~Scotty
 
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Stuff changing all the settings, just get the main ones set to 5-5-5-18 :)
Click to expand...

If just do that the system wont post. They have never been set properly - I just typed in some loose setting for the ones Im not sure about and the memory run very slow.





The last 5 timings im not sure of - maybe YellowBeard can help?

~Scotty
 
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Big.Wayne said:
Can you confirm is this your memory please!
That Corsair stuff looks um . . . . extremely low grade, Cas 7 @ DDR2-1066 wtf? :eek: . . . no wonder you can't set them to 5-5-5-15
Take the Corsairs out your machine and when your sure no one is looking take them to a deserted area and bury them in a shallow grave! :cool:
Click to expand...

Confirmed.......and confirmed........
I can set them to 5-5-5-15 but 980mhz max.
 
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No hype - just cheap. I got the Corsairs from my old rig and bought the reapers to add in. The reapers cost me £38 delivered and the Corsairs were £25ish delivered. I wanted to save cash so just mixed them till I'm working again.

The voltage seems very high at 2.3v to get just their rated times and speed. When I buy my matched set I'll be paying close attention to the details. I never really got too concerned about it all.

Atm the OCZ passed stress test at 2.3v with 2:1 ratio (1066)

~Scotty
 
Big.Wayne said:
Can they go any lower on the vDimm or?
Click to expand...

I cant lower the voltage at all - but interestingly I can run 5-4-4-12 @ 1066 2:1
So far mem test is fine for 20 mins or so....needs a little longer!!

****EDIT****
Nope, getting errors so lowered them back to 5-5-5-15 (Which was fine at 266 2:1)

Tried FSB at 333 and 8:5 ratio but errors again even at 5-5-5-15

~Scotty
 
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