[skyline_king88]

hey i have the asus m4a78lt-m with the 955be @217x18.5 and the ram is g skill ripjaw4x2 1333 @ 1449 and the ram ond the cpu are stable.. buti can get the nb over 13x with it is at 2820 but if i go to 14x it will not boot windows.. the voltage is at 1.25 any help would be nice... anything i am missing just ask...

 

[dixson01974]

You need need voltage then 1.25v.

 

[The Sandman]

The 2820 NB may just be your chips limit. You can try raising the CPU/NB Voltage. The max I would run would with that chip is 1.4-1.45v max.

As far as your mobo is concerned I'd strongly suggest you read this thread as to the likelihood of mobo failure when OC'ing this high. http://www.overclock.net/amd-motherb...hase-list.html
I'd be doing a little research before going any higher with your OC!!!!

 

[skyline_king88]

well i dont want to up the chipvoltage anymore as it runs to hot with the cooler i have.. so i should keep it at 4gig... and my board is not on there it is micro so the powerphase is likely 4-1 or 3-1 .. and got another question how do i get the timings tighter with the ramas i dont know what to set in the bios do to this it shows more setings then cpu-z shows...

 

[xd_1771]

You might want to sure the MOSFETs are properly cooled before overclocking that 125W 955. Not that it'll cause you any danger, but you may not be able to test properly since OCP may very well kick in and too often. Right now they are unheatsinked and probably completely uncooled due to the TX3 tower cooler - and pushing over 125W - so they may get hot enough for OCP protection to kick in and throttle your CPU during load or even shut down the board.
As for the NB, at 2820 I'd say you're about at the limit for C3 revision IMCs

The main timings for RAM (CL, tRCD, tRP, tRAS, tRC, Command Rate) are the ones you try to lower. One at a time or for the first three values (CL, TRCD, tRP) three at a time (except maybe the middle value). Overclocking your RAM by speed or timings will also depend on your particular kit, rated speed/timings, and ICs if you can find them.

 

[skyline_king88]

alright thanks i read the post about the power phase and i cant find anything on my board at what it is but if i am looking in the right spot and everything is it 8-1 or am i looking in wrong place right beside the chip.. do u have a pic of what they look like i can seam to get i good pic from the internet.and what is ocp becasue when i tryied to push to 4.2 the cpu would drop to 800.. and what is ic..sorry new to the overclocking thing... and do u any good mosfet heatsinks for a board that dont have clips or holes for a nice one...

 

[xd_1771]

It's to the left of the socket.
OCP = over current protection; ASUS boards all use this to protect the motherboard from damage, that's why there are never any ASUS VRM failures. The CPU speed dropping to 800Mhz during load at 4.2Ghz overclock is probably part of this protection and your VRMs are indeed getting too hot/overloaded to keep up. The CPU is already 125W TDP at stock and you are pushing it further.
You'll have to make do with individual heatsinks i.e. the Enzotech MOS-C1, but there are other models as well.

 

[skyline_king88]

hey alright i i was looking in right spot and i belive it is 8-1 witch is not bad right??.. and i was thinking of this one.. and should i change the northbrigde heatsink... and do u know any good heatsinks for the 6850
http://www.newegg.ca/Product/Product...82E16835708012

was thinking somthing like this for heatsink
http://ncix.com/products/?sku=32191&...e=Thermalright

 

[xd_1771]

No, it is a 4+1 phase motherboard. Those MOSFET heatsinks are about the one I'm talking about. I notice you're also in Canada, I might be able to make a nice suggestion from NCIX later today after school.

The Thermalright heatsink is for the northbridge, it won't fit the MOSFETs; you don't really need northbridge chipset aftermarket heatsinks anymore unless they have an iGP on board and you use it and you want to overclock it just for kicks. This is not 775 when the mem controllers were on the northbridge.

 

[skyline_king88]

alright thanks was not sure... and i was wondering should i wait to by a am3+ baord and spend 200$ or get the crosshair 4..

 

[The Sandman]

Now there's a loaded question lol.
Crosshair IV is the flag ship of Asus as of right now, and seeing both the Formula and Extreme where just released late last year it's a tough call on how long before something better will be out. There are several top Asus mobo's AM3+ capable with just a bios update which means they should run Bulldozer. That's been a real hot topic on here lately. Just depends on how long you wish to wait, BD is suppose to be released June 11th (for shipping anyway).

 

[Socks keep you warm]

Quote:

Originally Posted by xd_1771;13014957
You might want to sure the MOSFETs are properly cooled before overclocking that 125W 955. Not that it'll cause you any danger, but you may not be able to test properly since OCP may very well kick in and too often. Right now they are unheatsinked and probably completely uncooled due to the TX3 tower cooler - and pushing over 125W - so they may get hot enough for OCP protection to kick in and throttle your CPU during load or even shut down the board.
As for the NB, at 2820 I'd say you're about at the limit for C3 revision IMCs

The main timings for RAM (CL, tRCD, tRP, tRAS, tRC, Command Rate) are the ones you try to lower. One at a time or for the first three values (CL, TRCD, tRP) three at a time (except maybe the middle value). Overclocking your RAM by speed or timings will also depend on your particular kit, rated speed/timings, and ICs if you can find them.

Correct, Phenom C3's cannot surpass 2.8ghz.

 

[skyline_king88]

ok tahnks to all of u on the nb question i will leave it at 2.8... as for the board do u know the board that will do this am3+ with bios.. and will they run the bd at full... not worrid about getting new chip yet just what to know if i should get a new board now or get heatsinks and get a new board in july when the bd is in full swing.... and as for the ram timming is it bad to be 9-7-7-22-30 as any time i change the cl-9 to any lower it wont boot

 

[xd_1771]

Actually they can sometimes but it is very unlikely.
I don't think ASUS is updating this board for AM3+; only the highest end ones. For the low-end they are releasing new "M5A" series motherboards.

What is the official rated speed/timing/voltage of your RAM.... and what speed/voltage are you running them at?

 

[skyline_king88]

the ram speed i have is the gskll ripjaw 1333 9-9-9-24-33-t1 at 1.5 but i had to get it to 1.6 to overclock with fsb.. and thanks on the board...