G.Skill F2 6400CL5D 2GBNQ - testing

[ahmad]

Do memset!!!!!!!

[RealTelstar]

I wonder if the 4gb kit is a decent overclocker as well.
http://www.newegg.com/Product/Produc...82E16820231122

I need at least 850mhz and I am hoping for cas4 but I think I have to accept cas4...

[Death^Dread]

My single stick does 510 MHz at 2.1V 24/7 stable, 5-5-5-15 on my DS3 3.3. But I think my DS3 overvolts the mem a bit, so don't expect every board to do it at 2.1. Past this it's not stable, even with increased voltage. I can boot at 520 but opening CPU-Z crashes hehe.

[Death^Dread]

@ Plester

I would run 'em at 500MHz 24/7, but my E6300 won't touch 3.5 GHz and I get better performance with the E6300 at 3.15 and the sticks doing 450MHz

P.S. Got 4-4-4-12 at 2.1v, testing for stability.
http://valid.x86-secret.com/show_oc?id=180708

[ahmad]

Is there a difference between 12 and 15.

[Death^Dread]

maybe not in real world applications... but yes

[stealthbomber]

Just tried a pair of these modules today, running straight to 500MHz with ease.

[GSKILL TECH]

Just tried a pair of these modules today, running straight to 500MHz with ease.

what voltage you try? nice overclock

[stealthbomber]

I think it was between 2.1v-2.2v in the bios (like 2.178v or something), there isn't any >standard< options of 2.1v, 2.2v, 2.3v etc. but strange >odd< voltage values on this Asus P5N-E SLI bios.

Price/performance wise these modules are looking very good, might be able to squeeze a bit more MHz out of them when I get more time.

[rpsgc]

Hello,

I'm not so lucky as you are, mine are only stable at 4-4-4-xx with 2,25V! Since they are rated for 1.8~2.0 Volts is there any real danger in running them at 2,25V ?

E6400
ASUS P5B Deluxe

[derektm]

Hello,

I'm not so lucky as you are, mine are only stable at 4-4-4-xx with 2,25V! Since they are rated for 1.8~2.0 Volts is there any real danger in running them at 2,25V ?

E6400
ASUS P5B Deluxe

Are you running default speed?

[ahmad]

Check your subtimings, they make a huge difference for 4-4-4.

[rpsgc]

Are you running default speed?

Yes.

Check your subtimings, they make a huge difference for 4-4-4.

Those were left at default (P5B Deluxe). I've read the G.Skill / P5B Deluxe thread and will change them accordingly. Will report later


EDIT: I tested:

4-4-4-12 4-42-3-11-7-13 with 1,9V = BSOD
4-4-4-12 4-42-3-11-7-13 with 2,0V = BSOD in Windows

4-4-4-12 6-42-3-11-5-14 with 1,9V = Booted into Windows with errors...
4-4-4-12 6-42-3-11-5-14 with 2,0V = Didn't test... too busy repairing my damaged Windows

Any suggestions?

[rpsgc]

ahmad, what subtimings did you use for 4-4-4-1x at 1,9V?

[zert]

could somebody PLZ rip off the heatspreader to conferm ICs ?

[ahmad]

ahmad, what subtimings did you use for 4-4-4-1x at 1,9V?

You are being way, way too conservative. I was using those timings too and I couldn't get anywhere. The ones I use now:

tRFC: 45
Write to Precharge delay: 14
Write to read delay: 11
tRRD: 4
Read to write delay: 8
Read to precharge: 6

Honestly, I don't know what these translate to in the DS3 as I am getting these from Memset and I know memset reads a little differently from the BIOS.

Basically, dont be afraid to loosen the delays. I was trying 50-16-12-8 (memset) kinda deal 500MHz on this DS3. One thing you could do is just set them high enough to get into windows, and lower them while testing using memset. Don't close memset too often or you will have to restart.

I should find the exact relationship between the bios and the memset timings. It sucks when they dont translate directly.

[stealthbomber]

You should try these as posted by the G.SKILL rep:

TRRD: 3
TRC: 20
TWR: 6
TWTR: 9
TREF: 1
TRD: 6
TRFC: 42
ASY LAT: 2

With above timings I'm now running 5-5-5-15 @500MHz (1000MHz DDR), 100&#37; stable Prime95 24hrs+ blend mode verified:

[ahmad]

You have an ASUS board (I am guessing..), I do not have all of these subtimings available in the BIOS. I am missing trc, tref and async lat. Memset doesn't support those timings either, so I am out of luck there.

Also, what is your memory voltage and CPU FSB?

[zbomb5610]

You have an ASUS board (I am guessing..), I do not have all of these subtimings available in the BIOS. I am missing trc, tref and async lat. Memset doesn't support those timings either, so I am out of luck there.

Also, what is your memory voltage and CPU FSB?

i agree ahmad, seems that the ds3 is lacking a few settings for the subtimings that even my cousin's p5b deluxe has, i almost feel that if we had access to those, it might help to boot higher memory overclocks from the bios.

I can't go over 1100-1120 from bios, but with memset, i was able to hit 1260 with my cousin's crucial anniversary at 2.4v

[rpsgc]

I guess I'm just gonna give up on this...

4-4-4-12 4-42-3-11-7-13 didn't work
4-4-4-12 6-42-3-11-5-14 didn't work

4-4-4-12 5-42-4-11-6-14 didn't work
4-4-4-12 4-42-4-11-6-14 didn't work
4-4-4-12 6-42-4-11-6-14 didn't work

4-4-4-12 6-42-3-9-4-14 didn't work
4-4-4-12 6-42-3-11-5-14 didn't work

[ahmad]

Your TRFC is too low. Set it to 50+.

[rpsgc]

Your TRFC is too low. Set it to 50+.

42 is the maximum for the P5B Deluxe my friend...
I'm not very good at this so I'll just lay still :X

[GSKILL TECH]

42 is the maximum for the P5B Deluxe my friend...
I'm not very good at this so I'll just lay still :X

try 5-5-5-15
NQ is not working good with 4-4-4-12
and now is like 109 at newegg...... 2GB for 109, i just can't believe it...

[ahmad]

Yeah its very hard to get high FSB with 4-4-4-12, but 4-4-4-15 or 4-4-4-16 works good

[rpsgc]

try 5-5-5-15
NQ is not working good with 4-4-4-12

I have it at 5-5-5-15 but I wanted CL 4