The AMD Phenom II OC'ers Club

[Flyordie]

I WANT TO JOIN! So here she is! This is not permanant, I just don't trust the VRMs on this board enough to push it higher (since it doesnt even support the 125W Windsors...)...
Anywho-
http://valid.canardpc.com/show_oc.php?id=495939
This is D9 RAM, its just I heard they like to die with voltage so keeping it at 1.8V for the time being. Timings are a tad tighter now though 5-5-5-14 instead of the "18" you see in the CPU-Z Verification.
I figure 3,087Mhz is good enuf until (shadowfold kno's). ;-)

 

[Chicken Patty]

I WANT TO JOIN! So here she is! This is not permanant, I just don't trust the VRMs on this board enough to push it higher (since it doesnt even support the 125W Windsors...)...
Anywho-
http://valid.canardpc.com/show_oc.php?id=495939
This is D9 RAM, its just I heard they like to die with voltage so keeping it at 1.8V for the time being. Timings are a tad tighter now though 5-5-5-14 instead of the "18" you see in the CPU-Z Verification.
I figure 3,087Mhz is good enuf until (shadowfold kno's). ;-)

you planning on getting a new board?

 

[Flyordie]

Yes, im buying ShadowFolds 790GX

 

[Chicken Patty]

Yes, im buying ShadowFolds 790GX

great, you'll have a lot of fund with the chip then

 

[exodusprime1337]

hey i'm wondering if anybody can tell me what i might be doing wrong here.

i'm oc'ing my nb on the p2 940 and i've come across and odd issue, here are the scenarios

@3.8ghz 1.50v with a nb of 1800 i'm stable 6 hours prime so we'll go from here with my experience

if i oc the nb to 2600 i'm still good, then if i go to 2800 i get rounding errors almost instantly in prime... ok maybe too high but what happens next is the odd part

if i drop my memory speed from 1066 to 800 then the issue goes away and i can go to 3.2ghz or so on the nb... if i bring the memory back up then the issues return.

i've also tried this. after memtesting each mem stick at 600(1200 ddr2) for 20 mins or so at 2.6ghz nb i'm fine... then if i raise back to 2800... no go again, rounding errors....

i'm finding the line on the mem speed falls somewhere between 1040 and 1100 and higher. if i stay below 1040 i'm fine.. any higher and its errors with memory...

the memory is not damaged and i've tried all 4 of the sticks i have of ddr 1150 from patriot. i'm using the sli epp profile but i'm manual setting the memory at 5,5,5,12 to make sure it stays at it's epp setting. is there something i can do to alleviate this or is it a compatibility issue with the memory and the p2/m3n ht delux?

 

[cdawall]

no memory issues i have found with that boards big brother. my chip is the 945BE which may explain why i can push the memory higher. the NB and mem controller all work together you may hav ea weak NB which is in turn holding back your ram clocks.


mine will do 2.8ghz NB and 1266mhz ram and 3.1ghz NB and 1100mhz ram so i hit the same issue just higher speeds

 

[exodusprime1337]

should i push for higher nb v?

 

[Super XP]

I now got an official stable ram settings. I couldn't run DDR2-1066 w/ 5-5-5-18 with 4 x 2GB's due to Phenom's lacking IMC so I set it up at DDR2-800 with 4-4-3-15 timings. Now the DDR2-800 outperforms the DDR2-1066

How I did this:
- DDR2 @ 2.2v (It was 2.2v default for DDR2-1066 anyway)
- Enable 2T
- Disable Ganged Mode
- Set memory to 4-4-3-15
- Set speed to 800
- Set NB voltage to 1.45v
- etc.

 

[Steevo]

Te 940 has a integrated memory controller.

 

[exodusprime1337]

so what would be better, ddr2 1000 4,4.4,12 and a 3000 nb, or ddr2 1200 5,5,5,12 and a 2000 nb?? both at 3.8Ghz

 

[Steevo]

If the data is in the first chip in the first row, and ready, the 1200Mhz would be way faster.


I was wrong about the latentcy, I believe I need sleep.

 

[exodusprime1337]

If the data is in the first chip in the first row, and ready, the 1200Mhz would be way faster.


I was wrong about the latentcy, I believe I need sleep.

meh... i'm no mem pro here... that makes no sense to me... could you elaborate, or is that just your tired answer lol

 

[Steevo]

http://www.hardwaresecrets.com/article/26/2


Read, I am too tired to make any sense. But in basic terms, just like driving from a house close to the Pizza place, as opposed to the house furthest away from the pizza place, the further away from the first chip, first row the more latentcy is needed to allow for data travel time, plus loading and unloading, cleaning, etc...


So the speed limit might be higher at 1200Mhz and if you live close you get there faster, but at a distance further away if you have more time loading the car, the difference is less, and thereby better to have the slower speed limit, and ability to load data faster.

 

[Super XP]

If you are only using 2 of the DIMMs vs. all 4, then you can run any speed upto DDR2-1200. But using all four DIMMs with AMD CPU's we are limited to DDR2-800. But for me 8GB or more is needed but for gaming 4GB is more than enough.

 

[exodusprime1337]

thanx i like the analogy.

 

[exodusprime1337]

If you are only using 2 of the DIMMs vs. all 4, then you can run any speed upto DDR2-1200. But using all four DIMMs with AMD CPU's we are limited to DDR2-800. But for me 8GB or more is needed but for gaming 4GB is more than enough.

if this was to me... i'm not using 4 dims only 2, just 2x1gig chips that are stock rated for 1150. i'm just referring the the nb hitting a wall as the mem speed increases. my question really is this. should i run ddr2 1200 at 2600Mhz nb, or should i run ddr2 1000 at 3000Mhz nb?

 

[Super XP]

if this was to me... i'm not using 4 dims only 2, just 2x1gig chips that are stock rated for 1150. i'm just referring the the nb hitting a wall as the mem speed increases. my question really is this. should i run ddr2 1200 at 2600Mhz nb, or should i run ddr2 1000 at 3000Mhz nb?

I would run the ram at DDR2-1200, but how on earth can you hit more than 2000MHz on the NB? These Phenom II's are only rated at 1,800 MHz?

 

[MAGMADIVER]

I would run the ram at DDR2-1200, but how on earth can you hit more than 2000MHz on the NB? These Phenom II's are only rated at 1,800 MHz?

My motherboard BIOS doesnt let me do anything over 1800MHz....I would love to push it a bit higher if I could

 

[Super XP]

Well all I did is up the voltage for the NB and Hyper Transport via bios and now they are both running at 2,000MHz instead of the stock 1,800MHz. Without the voltage increase I noticed my system not responding as fast, which is an indication of instability and would have crashed in a matter of time.

Now it runs great with the increase. Maybe there will be a future bios update which will alllow you to change the nb speed?

 

[Steevo]

They are rated at 2Ghz NB, and as the system overclockes, the NB frequency raises.

 

[PaulieG]

Those of you who are using the 790GX and 790FX chipset boards, what NB and HTT voltages are you using? I'm hearing that above 3.7ghz and 2400 NB freq that you really need at least 1.35v for both, though my Asus bios setting for both voltages turn red when I set them above 1.28v (giving warning that it's too high). WTF??

 

[TheScavenger]

In the 'overclock list' can you include what heatsink/waterblock was used?

Thanks for the awesome wallpaper, Shadowfold!

Thanks

 

[johnnyfiive]

I need to validate at 3.7 so I can make it in that list.

 

[cdawall]

so what would be better, ddr2 1000 4,4.4,12 and a 3000 nb, or ddr2 1200 5,5,5,12 and a 2000 nb?? both at 3.8Ghz

faster NB is better and that ram will run about the same anyway

I would run the ram at DDR2-1200, but how on earth can you hit more than 2000MHz on the NB? These Phenom II's are only rated at 1,800 MHz?

i can run 3ghz easily with up to 1150mhz ram


i just got in 6 sticks of D9's so hopefully i can make something happen with this phenom

 

[servermonkey]

-Top 5 Highest Clocks Reached-
To be eligible, you need a CPU-Z validation link.
1. cdawall - Phenom II X4 940 @ 4219mhz using an ASUS Crosshair II Formula Nforce 780A
2. Paulieg - Phenom II X4 940 @ 3909mhz using an ASUS M3A78-T 790GX
3. exodusprime1337 Phenom II X4 940 @ 3796mhz using an ASUS M3N-HT DELUXE 780A
4. Assassin48 - Phenom II X4 940 @ 3739mhz using an Foxconn A79A-S 790FX
5. Super XP - Phenom II X4 940 @ 3612mhz using an ASUS M3A79-T DELUXE 790FX

-Other Phenom II goodies!-
Wallpaper(by ShadowFold) - http://img509.imageshack.us/img509/8489/wallpaperql0.jpg
AMD Overdrive(Great overclocking utility) - http://game.amd.com/us-en/drivers_overdrive.aspx?p=1
AMD Fusion(good for benchmarking and gaming) - http://game.amd.com/us-en/drivers_fusion.aspx?p=1[/CENTER]

is the top clocks new?