ASUS P5N-E SLI 650i Thread

[markpbennett]

Hi,
I've been advised that i would be very lucky to take my cpu past 2.8g..can anyone explain why this is? i was looking to reach 3g...what would i need to do to reach this num?

Cheers

CPU: Q6600 Go @ 2.4g
MOBO: Asus P5N-E nForce 650i SLI Chipset LGA775 FSB1333 DDR2 Mainboard
MEM: 2 X 1G OCZ Gold
CPU Cooler: Arctic cooling freezer7
HD: 2 x 160g seagates in raid0
GPU: 8800 GTX

[Mounthooly]

Hi,

I took my time in getting here, I stopped along the way to read some of the posts and believe I've come to the right place.

The Kentsfield Stacker is crying out to be OC'd but unfortunately I've never done this type of thing before. I'm very much a noob and unfamiliar with the language and well I'm here now and keen to let this rig of mine reach new heights any help would be much appreciated.

[SSJVegeta]

Originally Posted by pheoxs

drop the LDT frequency to 4x, or maybe 3x ( i think its called LDT frequency, something like that) I had to lower mine to get 3ghz and 3.2ghz stable.

What does this LDT Frequency do?

Will it make my computer slower in some way?

Also what voltage is your NB set at?

[Gauvenator]

anyone here with an HR-05 SLI, how much did it drop your temps?

[pheoxs]

Originally Posted by markpbennett

Hi,
I've been advised that i would be very lucky to take my cpu past 2.8g..can anyone explain why this is? i was looking to reach 3g...what would i need to do to reach this num?

Cheers

CPU: Q6600 Go @ 2.4g
MOBO: Asus P5N-E nForce 650i SLI Chipset LGA775 FSB1333 DDR2 Mainboard
MEM: 2 X 1G OCZ Gold
CPU Cooler: Arctic cooling freezer7
HD: 2 x 160g seagates in raid0
GPU: 8800 GTX

The reason is, the p5n-e just doesn't seem to like overclocking quads in general, 3ghz may be do-able but not much more.

Originally Posted by SSJVegeta

What does this LDT Frequency do?

Will it make my computer slower in some way?

Also what voltage is your NB set at?

LDT frequency is the communication between the NB and the SB, lowering it a notch or two shouldn't decrease performance any, and if it helps you overclock higher, then it is worth it.

My NB is set at the 1.5xxV option, but I never tried to bring it down any.

Originally Posted by Gauvenator

anyone here with an HR-05 SLI, how much did it drop your temps?

According to PC probe it dropped my MB temperatures ~10C

[tekseven]

Originally Posted by pheoxs

I'll tell you right now, this board sucks badly for overclocking quads so you might not get too much more out of it unfortunately, very few people have had success so far with a quad.

Is there a better board you would recommend for quad? I've been looking around and that's the first time that I've heard that. (Not that I disbelieve you).

[Asce]

Any P35, X38 would be the boards to chose from. The 680i isnt a board i would consider anymore since its doesnt have full support for the 45nm CPU's.

[Euthanasiast]

So I ran Memtest 86 for a few hours today and got no errors, though when I went to boot up the computer afterwards it freezes almost immediately upon login or a minute afterwards. If there is sound occuring when it happens it gets caught in a loop and is frozen with no option but to hold down the power button until the system shuts down. I have no idea at this point if I have a hardware issue or not, and if I do, I have no idea which item to RMA first. This is INCREDIBLY FRUSTRATING considering that I was running fine with this exact same setup a mere two weeks ago.

Manual timings for RAM:

DDR2 800 / F2-6400
PQ Series
FSB SPEED 1066
DDR2 SPEED 800
VOLTAGE 1.92v
TCL 5
TRCD 5
TRP 5
TRAS 15
CMS 1T (is this the cmds clock setting?)
TRRD 3
TRC 15
TWR 6
TWTR 9
TREF 1
TRD 6
TRFC 51
ASY LAT 2

These were obtained from a tech on another forum. I think those same settings are listed here as well.

How could this exact setup run spectacularly well weeks ago, but then out of nowhere is the most unstable PC that I have ever encountered. Every attempt to get things going (and believe me I have tried EVERYTHING at this point) is countered with some completely unexpected result.

[SSJVegeta]

Originally Posted by pheoxs

LDT frequency is the communication between the NB and the SB, lowering it a notch or two shouldn't decrease performance any, and if it helps you overclock higher, then it is worth it.

My NB is set at the 1.5xxV option, but I never tried to bring it down any.

I tried LDT at 4x and my PC still reboot @ 3GHz under Orthos and when I tried LDT at 3x the PC wouldn't boot so I had to take the mobo battery out to reset the CMOS.

[pheoxs]

Originally Posted by tekseven

Is there a better board you would recommend for quad? I've been looking around and that's the first time that I've heard that. (Not that I disbelieve you).

At the moment if your only running a single graphics card, go for a DFI Blood Iron, their fairly cheap boards but they've shown some impressive numbers.

If you need a SLI board, your best bet is a 680i A2 board instead of the 650i p5n-e

Originally Posted by SSJVegeta

I tried LDT at 4x and my PC still reboot @ 3GHz under Orthos and when I tried LDT at 3x the PC wouldn't boot so I had to take the mobo battery out to reset the CMOS.

Thats really odd ... it might have something to do with since your chip is natively 800fsb you've encountered some kind of wall ...