How to change/loosen timings on my ram ?

Mr soft

Mr soft

New Member
I am wondering how to change/loosen timings on my ram.

I checked the Kingston site and found my correct voltage was 2.0v
In HD monitor they were at 1.82 or there about. I raised the voltage in the bios + .20

Voltage sensor 1 1.98 Volts <------- is this ok

Memory Type Hyper-x DDR2 800 with heat spreaders.
Memory Size 2048 MBytes
Channels Dual
Memory Frequency 312.5 MHz (CPU/9) max 333

At the moment my timings are
CAS# 5.0
RAS# to CAS# 5
RAS# Precharge 5
Cycle Time (tRAS) 15
Bank Cycle Time (tRC) 21
Command Rate 1T

I also raised the CPU multiplier in bios to 14x, giving me a Core Speed 2812.9 MHz (14.0 x 200.9 MHz)

AMD Athlon 64 X2 5000+ Black Edition
hardware monitor
Temperature sensor 0 13°C (55°F) [0xF9] (Core #0)
Temperature sensor 1 12°C (53°F) [0xF3] (Core #1)
Fan sensor 0 864 RPM [0x30D] (FANIN0)

Am I doing this right ? or should I just be raising the FSB to take everything up together? I´m using rev. A3 Bios . Chipset NVIDIA nForce 560

Any advice appreciated.
 
Do you have memory options in your BIOS that let you change the settings? You seem to be able to change everything else. Mine was on Auto which I had to change to alter the default "safe" timings and voltage.
 
Hi Steve
I think after I updated the bios I have less options in the overclock section.
as for the ram it seems to only let me change the voltage.
 
For Gigabyte you usually have to press ctrl+F1 at the main menu to unlock the more advanced options.

The RAM voltage looks fine, it's a little droopy though I don't know what the acceptable range limits are supposed to be.
 
Hey thanks Cromewell :)

Yes a whole new world just opened up. I changed the command rate to 2T, and it was sitting on 667mhz , that was changed to 800.

Now my timings are sitting on 5,6,6,18 1.94v (that voltage seems to have dropped a little. should I take it up closer to 2.0v. On Kingstons site they are listed as :
KHX6400D2K2/2G 2GB kit DDR2 800MHz Non-ECC CL5
(kit of 2 - 1GB) 5-5-5-15 2.0V
 
If it's stable I wouldn't worry about keeping it near 2v. That's a lot of droop though, how are your other voltages holding up?
 
I´m not sure which drooping your talking about. :confused:

The other voltages as reported in monitor
ITE IT87 hardware monitor

Voltage sensor 0 1.36 Volts [0x55] (CPU VCORE)
Voltage sensor 1 1.94 Volts [0x79] (VIN1)
Voltage sensor 2 3.23 Volts [0xCA] (+3.3V)
Voltage sensor 3 5.43 Volts [0xCA] (+5V)
Voltage sensor 4 12.22 Volts [0xBF] (+12V)
Voltage sensor 5 -12.48 Volts [0xC3] (-12V)
Voltage sensor 6 -0.38 Volts [0x6] (-5V)
Voltage sensor 7 5.43 Volts [0xCA] (+5V VCCH)
Voltage sensor 8 3.04 Volts [0xBE] (VBAT)
Temperature sensor 0 37°C (98°F) [0x25] (TMPIN0)
Temperature sensor 1 39°C (102°F) [0x27] (TMPIN1)
Temperature sensor 2 31°C (87°F) [0x1F] (TMPIN2)
Fan sensor 0 920 RPM [0x2DE] (FANIN0)

The kingston PDF file states the following recommended timings and voltages.

"DDR2-800 - CAS 4-4-4-12 @ 2.0V"

I also found this on my modules.

If manual timings are not set, the motherboard will fall back on SPD (Serial Presence Detect) defaults, which in the case of this particular module are DDR2-667 clock speeds with CAS 5-5-5-15 latencies @ 1.8V. Obviously, running these modules at SPD defaults would very much be a waste, so manual timing of these modules is a necessity.
Click to expand...

Thanks again for your help.
 
Sorry the 4-4-4-12 @ 2.0V" cas timings were for another module

Mine are recommended at 5-5-5-15 2.0v
 
The droop I'm talking about is you have set your vDIMM to 2.0v yes? If I read your post correctly, it's actually at 1.94. -0.06v isn't really out of spec but it's a big drop for 0.1v incremenets and if your board does 0.05v increments then it's way out.

Your 5V rail is out of spec although just barely, it shouldn't be that far off though. All the others are mostly reasonable. If you are able to adjust your rails I'd try to tune it in a bit. If you aren't able to or don't know how leave it alone. Messing with the voltage outputs is bad if you do it wrong.


You should be able to run the RAM at 4-4-4-12 and 1.9v but leave it set to 2v as the power getting to it is just barely over 1.9v anyway.
 
You should be able to run the RAM at 4-4-4-12
Click to expand...

That´s what I´m not sure about, I´ve only been in the hidden bios once .
I´m going to have to figure out how to get them to that, or even 5.5.5.18

or don't know
Click to expand...
Yeh that´s more the one. If I get this ram sorted that will make me happy enough. :)

is it just a matter of adjusting the
RAS# to CAS
RAS# Precharge
Cycle Time (tRAS) ?
 
Thanks Cromewell

I droped the timings down to 4.4.4.12 @ 2.0V , 800 clock speed, and the Command Rate back down to 1T. Gaming seems more fluent.
Stability seems good . My motherboard was getting up to 58c (under load) till I put fan on it.
Not sure if this was related.

It has been an interesting couple of days, testing ram configurations.
Thanks for your help.
 
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